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Default templates.xml#

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templates.xml
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<?xml version="1.0" encoding="UTF-8"?>
<templates version="1.34.0">
  <template prio="30" name="@string/speed_dial_title" label="@param-@string/uri" icon="@drawable/invite">
    <keyConfiguration>
      <lua>
        <code><![CDATA[local gUserpath = "/identities/identity["..pIdentity.."]/"
local gSubscriptionIsTrying = false
local gSubscriptionIsWorking  = false
local gPresenceIsTrying = false
local gPresenceIsWorking  = false
local gUser = "" -- username of associated identity
local gDomain = "" -- domain (registrar) of associated identity
local gPickupCode = nil -- pickup-code of associated identity
local gDoPickupWithReplaces = false -- whether or not to use a replaces header (instead of pickup-code) to pick a call
local gRemoteUri = nil -- sipUri-object of remote
local gRemoteUser = nil -- user-part of remote uri
local gLabel = nil -- label set for the key (when != gRemoteUser -> show gRemoteUser in 2nd(info)-line)
local gOngoingSubscription = nil
local gOngoingPresenceSubscr = nil
local gWithSubscription = pSubscriptionEnabled=="true"
local gWithPresence = pSubscribePresence=="true"
local gWithPickup = pDoPickup=="true" and gWithSubscription
local gWithMissed = pBlinkOnMissed=="true"
local gWithAutoAnswer = pRequestAutoAnswer=="true"
local gHaveMissedCall = false
local gHideInMixedPickupScreen = pHideInMixedPickupScreen=="true"
local gShowPickupScreenOnPress = pShowPickupScreenOnPress=="true"
local gPickupConnected = pPickupConnected=="true"
local gShowingPickupList = false -- true while phone displays all pickable calls for this key. During this time we update the list whenever something changes
-- last list of pickable calls reported to pickup-screen. Use it to check new list for changes so sending same list again can be avoided.
local gLastReportedPickupInfos = nil
-- remember what we're signaling to the user, this will influence what is expected when key is pressed
-- one of:
--   - errors-state: error, trying
--   - subscription-event: idle, pickable, busy
--   - local call: calling, active, holding, ringing
--   - missed call: missed
--   - nothing going on: idle
local gLastReportedState = nil
local gPrevReportedState = nil
-- presence-state is one of: dnd, fwd, away, busy, available, unknown, offline
local gPresenceState = nil
-- presence-state-string is either the translated version of the current state or in case of unknown-state: contains note from presence-subscription. This String is shown in 2nd key-line whenever presence-infos are shown
local gPresenceStateString = nil
local gLocalCallId = nil -- wenn we have local call with gRemoteUser -> store its call-id here (e.g. TC@4)
local gLocalCallState = nil -- wenn we have local call with gRemoteUser -> store its state here (calling, active, holding or ringing)
local gFctName = "Blf" -- name for this key in logs (uri and identity will be added during initialization)
-- keep infos of all monitored calls on our remote, only used when gWithSubscription==true
--  contains these entries:
--  - "entity" : attribute from dialog-info-xml
--  - "version" : attribute from dialog-info-xml
--  - "metaState" : one of free/pickable/busy -> combined meta-state accumulated from all dialogs (monitored calls)
--  - "activeDialogs" : array of all dialog-ids of the all dialogs responsible for signaled meta-state.
--  - "dialogs" : map by dialog-id of all dialogs (monitored calls) (contains the received xml)
--  - "metaInfos" : map by dialog-id of meta-data for all reported dialogs
--       -> "name" : name that identifies party to pick
--       -> "state" : terminated / ringing / calling / connected
--       -> "stateTime" : when dialog first entered the current state (time.currentTimeMillis())
--       -> "replaces" : value of replaces-header needed to pick the guy
local gDialogInfo = nil

local function isValid() -- reports if key has all it's params set to valid values.
    if pIdentity == "" or pIdentity == nil then
        pIdentity = "1" -- old wui's allowed to set no identity, let's fix this for the user
    end
    if pRemote == "" or pRemote == nil then
        return false
    end
    return true
end

local function getKeySettingsPath()
    if key and key.INDEX and key.MODULE then
        return "keys/"..key.MODULE.."/key[@keyNumber=\""..key.INDEX.."\"]"
    end
    return nil
end

-- Create value for replaces-header for provided dialog
local function getReplacesInfo(dlgXml)
    local callId = dlgXml["call-id"]
    if not callId or string.len(callId) == 0 then
        debug.log(gFctName..": cannot find call-id for replaces-header", "e")
        return nil
    end
    return sipTools.mkReplaces{callId=callId, to=dlgXml["remote-tag"], from=dlgXml["local-tag"]}
end

-- Create value for replaces-header for first pickable dialog
local function getFirstReplacesInfo()
    if #gDialogInfo.activeDialogs == 0 or not gDialogInfo.metaState == "pickable" then
        debug.log(gFctName..": cannot find pickable call for replaces", "e")
        return nil
    end
    return getReplacesInfo(gDialogInfo.dialogs[gDialogInfo.activeDialogs[1]])
end

-- analyze provided dialog and find a text that describes who our monitored remote is talking to
local function getRemoteName(dlgXml)
    local remote = dlgXml:find("remote")
    if not remote then
        debug.log(gFctName..": missing <remote> within <dialog-info>, cannot name remote party", "w")
        return ""
    end
    local dispName = remote:find("identity", "display")
    if dispName and string.len(dispName.display) > 0 then return dispName.display end
    local remote_usr = remote:find("identity")
    if not remote_usr then remote_usr = remote:find("target") end
    if not remote_usr or not remote_usr[1] then
        debug.log(gFctName..": missing remote-uri within <dialog-info>, cannot name remote party", "w")
        return ""
    end
    if string.find(string.lower(remote_usr[1]), "anonymous") then
        return "@string/call_anonyme"
    end
    local remote_uri = sipTools.parseUri{sipUri=remote_usr[1]}
    if not remote_uri or not remote_uri:getUiNumber() then
        return remote_usr[1]
    end
    return remote_uri:getUiNumber()
end

-- analyze existing dialogs and find a text that describes who our monitored remote is talking to
local function getBlfRemoteText()
    if #gDialogInfo.activeDialogs == 0 then
        return nil
    elseif #gDialogInfo.activeDialogs > 1 and not gDoPickupWithReplaces then
        -- wouldn't know which one would be picked
        return "@string/multiple_calls"
    end
    return getRemoteName(gDialogInfo.dialogs[gDialogInfo.activeDialogs[1]])
end

local function updateKey()
    local desiredInfo = nil
    local desiredIcon = nil
    local prevReportedState = gLastReportedState

    -- default to showing tel-nr in 2nd line (when it's not already shown in 1st line)
    if gLabel and gLabel ~= gRemoteUser and gLabel ~= "" then
        desiredInfo = gRemoteUser
    end

    if not isValid() then
        gLastReportedState = "error"
        key:setLed("orange", false)
        desiredInfo = "@string/setup_failed"
        desiredIcon = "@drawable/block"
    else
        gLastReportedState = "idle"
        if gLocalCallState == "calling" then
            gLastReportedState = "calling"
            key:setLed("red", true)
            desiredInfo = "@string/callstate_calling"
        elseif gLocalCallState == "ringing" then
            gLastReportedState = "ringing"
            key:setLed("red", true)
            desiredInfo = "@string/callstate_ringing"
        elseif gLocalCallState == "holding" then
            gLastReportedState = "holding"
            key:setLed("red", true)
            desiredInfo = "@string/callstate_holding"
        elseif gLocalCallState == "active" then
            gLastReportedState = "active"
            key:setLed("red", false)
            desiredInfo = "@string/callstate_active"
        elseif gWithSubscription then
            if gSubscriptionIsWorking  then
                if gDialogInfo.metaState == "busy" then
                    gLastReportedState = "busy"
                    key:setLed("red", false)
                    desiredInfo = getBlfRemoteText()
                elseif gDialogInfo.metaState == "pickable" then
                    gLastReportedState = "pickable"
                    key:setLed("red", true)
                    desiredIcon = "@drawable/pick_up"
                    desiredInfo = getBlfRemoteText()
                else
                    gLastReportedState = "idle"
                    key:setLed("off")
                end
            elseif gSubscriptionIsTrying then
                gLastReportedState = "trying"
                key:setLed("orange", true)
                desiredInfo = "@string/subscription_trying"
            else
                gLastReportedState = "error"
                key:setLed("orange", false)
                desiredInfo = "@string/subscription_failed"
            end
        else
            key:setLed("off")
        end
        if gLastReportedState == "idle" and gHaveMissedCall then
            gLastReportedState = "missed"
            key:setLed("green", true)
            desiredInfo = "@string/missed_call"
        end
        if gLastReportedState == "idle" and gWithPresence then
            if gPresenceIsTrying then
                gLastReportedState = "presence_trying"
                key:setLed("orange", true)
                desiredInfo = "@string/subscription_trying"
            elseif not gPresenceIsWorking then
                gLastReportedState = "presence_error"
                key:setLed("orange", false)
                desiredInfo = "@string/presence_failed"
            else
                gLastReportedState = "presence_"..gPresenceState
                desiredInfo = gPresenceStateString
                if gPresenceState == "available" then
                    key:setLed("green", false)
                elseif gPresenceState == "dnd" or gPresenceState == "busy" then
                    key:setLed("red", false)
                else
                    key:setLed("orange", false)
                end
            end
        end
    end
    if not (prevReportedState == gLastReportedState) then
      gPrevReportedState = prevReportedState
    end
    key:setInfo(desiredInfo)
    key:setIcon(desiredIcon)
end

function onDbResult(entries)
    gHaveMissedCall = false
    for i, queryParam in ipairs(entries) do
        local entryUser = sipTools.parseUri{sipUri=queryParam.number}:getUser()
        if entryUser == gRemoteUser then
            debug.log(gFctName..": found missed call from "..tostring(queryParam.number), "d")
            gHaveMissedCall = true
            break
        end
    end
    updateKey()
end

function onCallEvent(event, call1, call2)
    if event == nil or call1 == nil then
        debug.log(gFctName..": invalid parameters at callListChanged("..tostring(event).." ,"..tostring(call1)..")", "e")
        return
    end
    local callId = call1:getId()
    local state = call1:getState()
    local number, name = call1:getRemote()
    debug.log("received "..tostring(event).." for call to "..tostring(number)..", state="..tostring(state)..", callId="..tostring(callId), "v")
    local remoteUri = sipTools.parseUri{sipUri=number}
    local remoteUser = remoteUri:getUser()
    if remoteUser ~= gRemoteUser then
        if callId == gLocalCallId then
            debug.log("call-partner of local "..callId.." changed, call no longer belongs to "..gFctName, "d")
            gLocalCallId = nil
            gLocalCallState = nil
            updateKey()
        end
        return
    end
    if state == "calling" or state == "ringing" or state == "active" or state == "holding" then
        if gLocalCallId ~= callId then
            debug.log(gFctName.." found new local call "..callId.." in state "..state, "d")
        elseif gLocalCallState ~= state then
            debug.log(gFctName.." "..callId.." changed state to "..state, "d")
        end
        gLocalCallId = callId
        gLocalCallState = state
    else
        debug.log(gFctName.." "..callId.." ended", "d")
        gLocalCallId = nil
        gLocalCallState = nil
    end
    updateKey()
end

-- collect list of calls to present to phome
function collectPickupList()
    local pickupInfos = {}
    if not gDialogInfo then
      return pickupInfos
    end
    for _, dlgId in ipairs(gDialogInfo.activeDialogs) do
        local dlgXml = gDialogInfo.dialogs[dlgId]
        local newPickInfo = {}
        newPickInfo["other-name"] = key.TITLE
        if gDialogInfo.metaInfos[dlgId] then
            if (gDialogInfo.metaInfos[dlgId].state ~= "ringing") then
                if (gPickupConnected and gDialogInfo.metaInfos[dlgId].state == "connected") then
                    -- thats fine, we also report connected
                else
                    goto continueCollectPickupList
                end
            end
            newPickInfo.state = gDialogInfo.metaInfos[dlgId].state
            newPickInfo.stateTime = gDialogInfo.metaInfos[dlgId].stateTime
        else
            goto continueCollectPickupList
        end
        newPickInfo["pickup-name"] = getRemoteName(dlgXml)
        local replHdr, replVal = getReplacesInfo(dlgXml)
        newPickInfo.replaces = replVal
        pickupInfos[dlgId] = newPickInfo
        ::continueCollectPickupList::
    end
    return pickupInfos
end

-- count the keys of a dictionary
function getDictSize(dictionary)
    if dictionary == nil then
        return 0
    end
    local result = 0
    for _, _ in pairs(dictionary) do
        result = result + 1
    end
    return result
end

-- check 2 pickup-lists for changes
function pickupListChanged(oldList, newList)
    local oldSize = getDictSize(oldList)
    local newSize = getDictSize(newList)
    if oldSize == 0 then
        return newSize > 0
    end
    if newList == nil or newSize ~= oldSize then
        return true
    end
    for dlgId, infos in pairs(newList) do
        if not oldList[dlgId] or
            oldList[dlgId].state ~= newList[dlgId].state or
            oldList[dlgId].replaces ~= newList[dlgId].replaces or
            oldList[dlgId]["pickup-name"] ~= newList[dlgId]["pickup-name"] then
            return true
        end
    end
    return false
end

local function createDialogInfoStruct(dlgVers, dlgEntity)
    local result = {}
    result.entity = dlgEntity
    result.version = dlgVers
    result.metaState = "free"
    result.activeDialogs = {}
    result.dialogs = {}
    return result
end

local function handleNotify(subscr, data, headers)
    gSubscriptionIsWorking  = true
    gSubscriptionIsTrying = false
    local allGood, xmlOrError = pcall(xml.eval, data)
    if not allGood then
        debug.log(gFctName.." received Notify was not a valid XML: "..tostring(xmlOrError), "e")
        debug.log(gFctName.." ignoring un-parsable notify: "..data, "e")
        return
    end
    local dlgInfo = xmlOrError
    if dlgInfo ~= nil then
        debug.log(gFctName.." received Notify", "d")
        if dlgInfo:tag() ~= "dialog-info" then
            debug.log(gFctName..": did not receive a dialog-info, ignoring "..tostring(dlgInfo:tag()) , "e")
            return
        end
        local dlgVers = dlgInfo.version
        local dlgEntity = dlgInfo.entity
        local dlgState = dlgInfo.state
        if not dlgEntity or not dlgVers or not dlgState then
            debug.log(gFctName..": received dialog-info is missing essencial attributes, ignoring dialog-info with "
                      ..tostring(dlgVers).." / "..tostring(dlgEntity).." / "..tostring(dlgState) , "e")
            return
        end
        local oldMetaInfos = {}
        local newMetaInfos = {}
        dlgVers = tonumber(dlgVers)
        if not gDialogInfo then
            -- assuming this is the first dialog-info we've received -> initialize gDialogInfo
            gDialogInfo = createDialogInfoStruct(dlgVers, dlgEntity)
        else
            oldMetaInfos = gDialogInfo.metaInfos
            if gDialogInfo.entity ~= dlgEntity then -- strange -> begin again
                debug.log(gFctName..": entity in dialog-info changed, re-initializing gDialogInfo", "w")
                gDialogInfo = createDialogInfoStruct(dlgVers, dlgEntity)
            elseif gDialogInfo.version >= dlgVers then
                debug.log(gFctName..": received outdated dialog-info -> ignoring version "..tostring(dlgVers), "i")
                return
            end
            gDialogInfo.version = dlgVers
        end
        if dlgState == "full" then
            gDialogInfo.dialogs = {}
        end
        for _,dlg in ipairs(dlgInfo) do
            local dlgId = dlg.id
            if dlgId then
              gDialogInfo.dialogs[dlgId] = dlg
            end
        end
        -- evaluate metaState:
        local busyDlgs = {}
        local pickableDlgs = {}
        for dlgId, dlg in pairs(gDialogInfo.dialogs) do
            newMetaInfos[dlgId]={}
            newMetaInfos[dlgId].state = "terminated" -- might change below to ringing / calling / connected
            local stateXml = dlg:find("state")
            local state = nil
            if stateXml and #stateXml >= 1 then state = stateXml[1] end
            if state == "confirmed" then
                busyDlgs[#busyDlgs+1] = dlgId
                newMetaInfos[dlgId].state = "connected"
            elseif state == "terminated" then
                -- ignore
            else
                -- assuming proceeding, early oder trying
                local direction = dlg.direction
                if direction == "initiator" then
                    busyDlgs[#busyDlgs+1] = dlgId
                    newMetaInfos[dlgId].state = "calling"
                else
                    pickableDlgs[#pickableDlgs+1] = dlgId
                    newMetaInfos[dlgId].state = "ringing"
                end
            end
            if oldMetaInfos[dlgId] and oldMetaInfos[dlgId].state == newMetaInfos[dlgId].state then
                newMetaInfos[dlgId].stateTime = oldMetaInfos[dlgId].stateTime
            else
                newMetaInfos[dlgId].stateTime = time.currentTimeMillis()
            end
        end
        gDialogInfo.metaInfos = newMetaInfos
        if #pickableDlgs > 0 then
            gDialogInfo.activeDialogs = pickableDlgs
            gDialogInfo.metaState = "pickable"
        elseif #busyDlgs > 0 then
            gDialogInfo.activeDialogs = busyDlgs
            gDialogInfo.metaState = "busy"
        else
            gDialogInfo.activeDialogs = {}
            gDialogInfo.metaState = "free"
        end
        debug.log(gFctName..": state from Notify: "..gDialogInfo.metaState, "d")
    else
        debug.log(gFctName..": received empty notify from "..subscr:getUri() , "e")
    end
    updateKey()
    if  gShowingPickupList or not gHideInMixedPickupScreen then
        local pickupInfos = collectPickupList()
        if pickupListChanged(gLastReportedPickupInfos, pickupInfos) then
            system.updatePickupScreen{uri=pRemote, line=pIdentity, calls=pickupInfos, hideInMixedList=gHideInMixedPickupScreen}
            gLastReportedPickupInfos = pickupInfos
        end
    end
end

local function unsubscribe()
    gSubscriptionIsWorking  = false
    gSubscriptionIsTrying = false
    gDialogInfo = nil
    if (gOngoingSubscription) then
        gOngoingSubscription:unsubscribe()
        gOngoingSubscription = nil
    end
end

local function subscriptionTerminated(subscrObj, reason)
    gSubscriptionIsWorking  = false
    gSubscriptionIsTrying = false
    gDialogInfo = nil
    if reason == "Account not found" or (reason == "Not Found" and gRemoteUser:sub(1,1) == "+") then
        local cfgPath = getKeySettingsPath()
        if cfgPath then
            debug.log("Pbx reported surveiled account doesn't exist for "..gFctName.."-key -> disabling subscription", "e")
            gWithSubscription = false
            cfgPath = cfgPath.."/parameters/parameter[@name='@string/subscription_enabled']/@value"
            config.set(cfgPath, "false")
        end
    else
        debug.log(gFctName..": subscription failed with "..tostring(reason), "e")
    end
    updateKey()
end

local function onSubscrIsTrying()
    gSubscriptionIsWorking  = false
    gSubscriptionIsTrying = true
    updateKey()
end

-- (re)subcribe to dialog-subscription. If there is already an ongoing subscrition -> trigger a re-subscribe on it.
-- When gWithSubscription == false -> will at most unsubscribe.
local function subscribe()
  gSubscriptionIsWorking  = false
  gSubscriptionIsTrying = false
  gDialogInfo = nil
  if gOngoingSubscription then
    if gWithSubscription then
      gOngoingSubscription:resubscribe()
    else
      gOngoingSubscription:unsubscribe()
      gOngoingSubscription = nil
    end
  else
    if gWithSubscription then
      gOngoingSubscription = sip.subscribe{uri=pRemote, onNotify=handleNotify, line=pIdentity,
                                           onTerminated=subscriptionTerminated, onTrying=onSubscrIsTrying}
    end
  end
end

local function getPresenceNote(xmlTree)
    local firstNoteWithText = nil
    for _,subTree in ipairs(xmlTree) do
        local tag = subTree and xml.tag(subTree) or nil
        if tag and tag == "note" then
            local note = tostring(subTree[1])
            local noteLowered = note:lower()
            if noteLowered:find("offline") then
                return "offline", note
            elseif noteLowered:find("dnd") or noteLowered:find("disturb") then
                return "dnd", note
            elseif noteLowered:find("fwd") or noteLowered:find("forward") then
                return "fwd", note
            elseif noteLowered:find("away") then
                return "away", note
            elseif noteLowered:find("busy") or noteLowered:find("ring") or (noteLowered:find("on") and noteLowered:find("phone")) then
                return "busy", note
            elseif (noteLowered:find("available") or noteLowered:find("online") or noteLowered:find("idle") or (noteLowered:find("ready")) and not noteLowered:find("not ")) then
                return "available", note
            end
            if firstNoteWithText == nil and note and #note > 0 then
                firstNoteWithText = note
            end
        end
    end
    return "unknown", firstNoteWithText
end

local function handlePresenceNotify(subscr, data, headers)
    gPresenceIsWorking  = true
    gPresenceIsTrying = false
    local allGood, xmlOrError = pcall(xml.eval, data)
    if not allGood then
        debug.log(gFctName.." received presence notify was not a valid XML: "..tostring(xmlOrError), "e")
        debug.log(gFctName.." ignoring un-parsable notify: "..data, "e")
        return
    end
    local presenceXml = xmlOrError
    if presenceXml ~= nil then
        debug.log(gFctName.." received presence notify", "d")
        if presenceXml:tag() ~= "presence" then
            debug.log(gFctName..": did not receive a presence-tree, ignoring "..tostring(presenceXml:tag()) , "e")
            return
        end
        local note = nil
        local firstNoteWithText = nil
        gPresenceState = "unknown"
        local basic = xml.find(presenceXml, "basic")
        local basicallyOpen = false
        if basic then
            if basic[1] == "closed" then
                gPresenceState = "offline"
            else
                basicallyOpen = true
            end
        end
        if gPresenceState == "unknown" then
            gPresenceState, note = getPresenceNote(presenceXml)
            if firstNoteWithText == nil and note and #note > 0 then
                firstNoteWithText = note
            end
        end
        if gPresenceState == "unknown" then
            for _,subTree in ipairs(presenceXml) do
                local tag = subTree and xml.tag(subTree) or nil
                if tag and tag == "tuple"then
                    gPresenceState, note = getPresenceNote(subTree)
                    if firstNoteWithText == nil and note and #note > 0 then
                        firstNoteWithText = note
                    end
                    if gPresenceState ~= "unknown" then
                        goto onPresenceFound
                    end
                end
            end
        end
        if gPresenceState == "unknown" then
            for _,subTree in ipairs(presenceXml) do
                local tag = subTree and xml.tag(subTree) or nil
                if tag and tag == "person" then
                    debug.log(gFctName.." found tree "..tag, "i")
                    gPresenceState, note = getPresenceNote(subTree)
                    if firstNoteWithText == nil and note and #note > 0 then
                        firstNoteWithText = note
                    end
                    if gPresenceState ~= "unknown" then
                        goto onPresenceFound
                    end
                end
            end
        end
        ::onPresenceFound::
        if gPresenceState == "unknown" then
            if firstNoteWithText then
                gPresenceStateString = firstNoteWithText
            elseif basicallyOpen then
                gPresenceState = "available"
                gPresenceStateString = "@string/presence_available"
            else
                gPresenceStateString = "@string/presence_unknown"
            end
        else
            gPresenceStateString = "@string/presence_"..gPresenceState
        end
        debug.log(gFctName..": state from presence notify: "..gPresenceState, "d")
    else
        debug.log(gFctName..": received empty presence notify from "..subscr:getUri() , "e")
    end
    updateKey()
end

local function unsubscribePresence()
    gPresenceIsWorking  = false
    gPresenceIsTrying = false
    if (gOngoingPresenceSubscr) then
        gOngoingPresenceSubscr:unsubscribe()
        gOngoingPresenceSubscr = nil
    end
end

local function presenceTerminated(subscrObj, reason)
    gPresenceIsWorking  = false
    gPresenceIsTrying = false
    debug.log(gFctName..": presence failed with "..tostring(reason), "e")
    updateKey()
end

local function onPresenceIsTrying()
    gPresenceIsWorking  = false
    gPresenceIsTrying = true
    updateKey()
end

local function subscribePresence()
    unsubscribePresence()
    if gWithPresence then
        gOngoingPresenceSubscr = sip.subscribe{uri=pRemote, onNotify=handlePresenceNotify, line=pIdentity,
                                               onTerminated=presenceTerminated, onTrying=onPresenceIsTrying,
                                               type="presence"}
    end
end

local function identityChanged(path)
    gPickupCode = config.get(gUserpath .. "pickupCode")
    gDoPickupWithReplaces = not gPickupCode or string.len(gPickupCode) == 0
    local new_user = config.get(gUserpath .. "username")
    local new_domain = sip.identities.getDomain(pIdentity);
    if new_user ~= gUser or new_domain ~= domain then
        unsubscribe()
        gUser = new_user
        gDomain = new_domain
        subscribe()
        subscribePresence()
        updateKey()
    end
end

local function setupRegChange()
    config.register(gUserpath, identityChanged)
    identityChanged()
end

function onStopShowingPickupList()
    gShowingPickupList = false
end

function onKeyUp()
    local headers = {}

    debug.log(gFctName.."-key pressed", "d")
    if not isValid() then
        debug.log("missing parameter(s), "..gFctName.."-key won't work ever", "e")
        return
    elseif gLastReportedState == "presence_error" or gLastReportedState == "presence_trying" then
        debug.log(gFctName..": presence-subscription had failed before, attempting restart", "d")
        subscribePresence()
        updateKey()
        return
    elseif gLastReportedState == "error" or gLastReportedState == "trying" then
        debug.log(gFctName..": subscription had failed before, attempting restart", "d")
        subscribe()
        updateKey()
        return
    elseif gLastReportedState == "calling" then
        debug.log(gFctName..": outgoing call thats not connected yet -> ignore key-press", "d")
        return
    elseif gLastReportedState == "active" then
        debug.log(gFctName..": connected call -> hold", "d")
        sip.calls.hold(gLocalCallId)
        return
    elseif gLastReportedState == "holding" then
        debug.log(gFctName..": held call -> retrieve", "d")
        sip.calls.resume(gLocalCallId)
        return
    elseif gLastReportedState == "ringing" then
        debug.log(gFctName..": ringing call -> accept", "d")
        sip.calls.accept(gLocalCallId)
        return
    elseif gWithPickup then
        local pickupInfos = collectPickupList()
        if getDictSize(pickupInfos) > 0 and gShowPickupScreenOnPress then
            gShowingPickupList = true
            system.showPickupScreen{uri=pRemote, line=pIdentity, calls=pickupInfos, onExit=onStopShowingPickupList}
            gLastReportedPickupInfos = pickupInfos
            return
        end
        if getDictSize(pickupInfos) > 0 or (gLastReportedState == "busy" and gPrevReportedState == "pickable") then
            debug.log(gFctName..": picking the call", "d")
            local doPickup = false
            local replHdr, replVal = getFirstReplacesInfo()
            if not gDoPickupWithReplaces then
                debug.log(gFctName..": picking with pickup-code '"..gPickupCode.."'", "d")
                doPickup = true
            else
                if replHdr then
                    debug.log(gFctName..": picking with Replaces-Header: "..replVal, "d")
                    headers[replHdr] = replVal
                else
                    debug.log(gFctName..": cannot pick, replaces-info unavailable", "e")
                    return
                end
            end
            sip.invite{uri=pRemote, line=pIdentity, hidden=false, headers=headers, pickup=doPickup}
            return
        end
    end
    debug.log(gFctName..": simply calling the remote (state: "..gLastReportedState..", autoAnswer: "..tostring(gWithAutoAnswer)..")", "d")
    if gWithAutoAnswer then
        headers['Alert-Info'] = '<http://127.0.0.1>;info=alert-autoanswer'
    end
    sip.invite{uri=pRemote, line=pIdentity, hidden=false, headers=headers}
end

function initialize()
    key:setInfo("initializing")
    if isValid() then
        setupRegChange()
    else
        debug.log("missing parameters, "..gFctName.."-key won't work", "e")
        updateKey()
        return
    end
    gRemoteUri = sipTools.parseUri{sipUri=pRemote, fromUserInput=true, idIdx=pIdentity}
    gRemoteUser = gRemoteUri:getUser()
    if gWithMissed then
      calllog.monitorMissed{onNewMissed=onDbResult, line=pIdentity, user=gRemoteUser}
    end
    sip.calls.listen{callback=onCallEvent, line=pIdentity, user=gRemoteUser}
    gFctName = "BLF["..gRemoteUri:getUiNumber().." on id "..pIdentity.."]"
    local cfgPath = getKeySettingsPath()
    if cfgPath then
        gLabel = config.get(cfgPath.."/@label")
    end
    if gWithPresence then
        sip.setupSubscriptionType{name="presence", accepted="application/pidf+xml"}
    end
    updateKey()
end

initialize()]]></code>
        <params>
          <param name="pRemote"/>
          <param name="pIdentity"/>
          <param name="pSubscriptionEnabled"><value>true</value></param>
          <param name="pDoPickup"><value>true</value></param>
          <param name="pRequestAutoAnswer"><value>false</value></param>
          <param name="pBlinkOnMissed"><value>true</value></param>
          <param name="pShowPickupScreenOnPress"><value>false</value></param>
          <param name="pHideInMixedPickupScreen"><value>false</value></param>
          <param name="pPickupConnected"><value>false</value></param>
          <param name="pSubscribePresence"><value>false</value></param>
        </params>
      </lua>
    </keyConfiguration>
    <parameters>
      <parameter name="@string/uri" type="sip_uri">
        <path>//param[@name="pRemote"]/value</path>
      </parameter>
      <parameter optional="true" name="@string/identity" type="identity">
        <path>//param[@name="pIdentity"]/value</path>
      </parameter>
      <parameter optional="true" name="@string/subscription_enabled" type="boolean">
        <path>//param[@name="pSubscriptionEnabled"]/value</path>
      </parameter>
      <parameter optional="true" name="@string/do_pickup" type="boolean">
        <path>//param[@name="pDoPickup"]/value</path>
      </parameter>
      <parameter optional="true" name="@string/auto_answer" type="boolean">
        <path>//param[@name="pRequestAutoAnswer"]/value</path>
      </parameter>
      <parameter optional="true" name="@string/with_calllog" type="boolean">
        <path>//param[@name="pBlinkOnMissed"]/value</path>
      </parameter>
      <parameter optional="true" name="@string/pickup_list_on_press" type="boolean">
        <path>//param[@name="pShowPickupScreenOnPress"]/value</path>
      </parameter>
      <parameter optional="true" name="@string/pickup_list_hide" type="boolean">
        <path>//param[@name="pHideInMixedPickupScreen"]/value</path>
      </parameter>
      <parameter optional="true" name="@string/pickup_connected" type="boolean">
        <path>//param[@name="pPickupConnected"]/value</path>
      </parameter>
      <parameter optional="true" name="@string/signal_presence" type="boolean">
        <path>//param[@name="pSubscribePresence"]/value</path>
      </parameter>
    </parameters>
  </template>
  <template prio="20" name="@string/line_title" label="@param-@string/identity" icon="@drawable/line">
    <keyConfiguration>
      <line>
        <id></id>
      </line>
    </keyConfiguration>
    <parameters>
      <parameter name="@string/identity" type="identity">
        <path>//line/id</path>
      </parameter>
    </parameters>
  </template>
  <template prio="10" name="@string/park_position" label="@param-@string/uri" icon="@drawable/park_orbit">
    <keyConfiguration>
      <lua>
        <code><![CDATA[local gUserpath = "/identities/identity["..pIdentity.."]/"
local gSubscriptionIsTrying = false
local gSubscriptionIsWorking  = false
local gUser = "" -- username of associated identity
local gDomain = "" -- domain (registrar) of associated identity
local gPickupCode = nil -- pickup-code of associated identity
local gDoPickupWithReplaces = false -- whether or not to use a replaces header (instead of pickup-code) to pick a call
local gRemoteUri = nil -- sipUri-object of remote
local gRemoteUser = nil -- user-part of remote uri
local gOngoingSubscription = nil

-- remember what we're signaling to the user, this will influence what is expected when key is pressed
-- one of:
--   - errors-state: error, trying
--   - subscription-event: idle, pickable
--   - nothing going on: idle
local gLastReportedState = nil
local gLocalCall = nil -- when there is an active call using same identity as this orbit -> store it here in case user decides to park it
local gFctName = "ParkOrbit" -- name for this key in logs (uri and identity will be added during initialization)
-- keep infos of all monitored calls on our remote
--  contains these entries:
--  - "entity" : attribute from dialog-info-xml
--  - "version" : attribute from dialog-info-xml
--  - "metaState" : one of free/pickable -> combined meta-state accumulated from all dialogs (monitored calls)
--  - "activeDialogs" : array of all dialog-ids of the all dialogs responsible for signaled meta-state.
--  - "dialogs" : map by dialog-id of all dialogs (monitored calls)
local gDialogInfo = nil

local function isValid() -- reports if key has all it's params set to valid values. Set to nil to keep this default
    if pIdentity == "" or pIdentity == nil then
        return false
    end
    if pRemote == "" or pRemote == nil then
        return false
    end
    return true
end

-- Create value for replaces-header for first pickable dialog
local function getFirstReplacesInfo()
    if #gDialogInfo.activeDialogs == 0 or not gDialogInfo.metaState == "pickable" then
        debug.log(gFctName..": cannot find pickable call for replaces", "e")
        return nil
    end
    local dlgXml = gDialogInfo.dialogs[gDialogInfo.activeDialogs[1]]
    local callId = dlgXml["call-id"]
    if not callId or string.len(callId) == 0 then
        debug.log(gFctName..": cannot find call-id for replaces-header", "e")
        return nil
    end

    return sipTools.mkReplaces{callId=callId, to=dlgXml["remote-tag"], from=dlgXml["local-tag"]}
end

-- analyze existing dialogs and find a text that describes who our monitored remote is talking to
local function getBlfRemoteText()
    if #gDialogInfo.activeDialogs == 0 then
        return nil
    elseif #gDialogInfo.activeDialogs > 1 and not gDoPickupWithReplaces then
        -- wouldn't know which one would be picked
        return "@string/multiple_calls"
    end
    -- find something to name the pick-party:
    local remote = gDialogInfo.dialogs[gDialogInfo.activeDialogs[1]]:find("remote")
    if not remote then
        debug.log(gFctName..": missing <remote> within <dialog-info>, cannot name remote party", "w")
        return "@string/call_unknown"
    end
    local dispName = remote:find("identity", "display")
    if dispName and string.len(dispName.display) > 0 then return dispName.display end
    local remote_usr = remote:find("identity")
    if not remote_usr then remote_usr = remote:find("target") end
    if not remote_usr or not remote_usr[1] then
        debug.log(gFctName..": missing remote-uri within <dialog-info>, cannot name remote party", "w")
        return "@string/call_unknown"
    end
    if string.find(string.lower(remote_usr[1]), "anonymous") then
        return "@string/call_anonyme"
    end
    local remote_uri = sipTools.parseUri{sipUri=remote_usr[1]}
    if not remote_uri or not remote_uri:getUiNumber() then
        return remote_usr[1]
    end
    return remote_uri:getUiNumber()
end

local function updateKey()
    local desiredTitle = ""
    local desiredInfo = gRemoteUser
    local desiredIcon = nil

    if not isValid() then
        gLastReportedState = "error"
        key:setLed("orange", false)
        desiredInfo = "@string/setup_failed"
        desiredIcon = "@drawable/block"
    else
        if gSubscriptionIsWorking  then
            if gDialogInfo.metaState == "pickable" then
                gLastReportedState = "pickable"
                key:setLed("red", false)
                desiredInfo = getBlfRemoteText()
            else
                gLastReportedState = "idle"
                key:setLed("off")
            end
        elseif gSubscriptionIsTrying then
            gLastReportedState = "trying"
            key:setLed("orange", true)
            desiredInfo = "@string/subscription_trying"
        else
            gLastReportedState = "error"
            key:setLed("orange", false)
            desiredInfo = "@string/subscription_failed"
        end
    end
    key:setIcon(desiredIcon)
    key:setTitle(desiredTitle)
    key:setInfo(desiredInfo)
end

function getLocalCall(state)
    local allCalls = sip.calls.get_all()
    for _,aCall in ipairs(allCalls) do
        if aCall:getState() == state and tostring(aCall:getIdentityIndex()) == pIdentity then
            return aCall
        end
    end
    return nil
end

function onCallEvent(event, call1, call2)
    -- save the currently active call so we have it in case user wants to park it
    local theCall = getLocalCall("active")
    if not theCall then -- no active call .. maybe there is an incoming ringing one
        theCall = getLocalCall("ringing")
    end
    gLocalCall = theCall
end

local function createDialogInfoStruct(dlgVers, dlgEntity)
    local result = {}
    result.entity = dlgEntity
    result.version = dlgVers
    result.metaState = "free"
    result.activeDialogs = {}
    result.dialogs = {}
    return result
end

local function handleNotify(subscr, data, headers)
    -- parse remote party and state (trying, confirmed or other)
    gSubscriptionIsWorking  = true
    gSubscriptionIsTrying = false
    local allGood, xmlOrError = pcall(xml.eval, data)
    if not allGood then
        debug.log(gFctName.." received Notify was not a valid XML: "..tostring(xmlOrError), "e")
        debug.log(gFctName.." ignoring un-parsable notify: "..data, "e")
        return
    end
    local dlgInfo = xmlOrError
    if dlgInfo ~= nil then
        debug.log(gFctName.." received Notify", "d")
        if dlgInfo:tag() ~= "dialog-info" then
            debug.log(gFctName..": did not receive a dialog-info, ignoring "..tostring(dlgInfo:tag()) , "e")
            return
        end
        local dlgVers = dlgInfo.version
        local dlgEntity = dlgInfo.entity
        local dlgState = dlgInfo.state
        if not dlgEntity or not dlgVers or not dlgState then
            debug.log(gFctName..": received dialog-info is missing essencial attributes, ignoring dialog-info with "
                      ..tostring(dlgVers).." / "..tostring(dlgEntity).." / "..tostring(dlgState) , "e")
            return
        end
        dlgVers = tonumber(dlgVers)
        if not gDialogInfo then
            -- assuming this is the first dialog-info we've received -> initialize gDialogInfo
            gDialogInfo = createDialogInfoStruct(dlgVers, dlgEntity)
        else
            if gDialogInfo.entity ~= dlgEntity then -- strange -> begin again
                debug.log(gFctName..": entity in dialog-info changed, re-initializing gDialogInfo", "w")
                gDialogInfo = createDialogInfoStruct(dlgVers, dlgEntity)
            elseif gDialogInfo.version >= dlgVers then
                debug.log(gFctName..": received outdated dialog-info -> ignoring version "..tostring(dlgVers), "i")
                return
            end
            gDialogInfo.version = dlgVers
        end
        if dlgState == "full" then
            gDialogInfo.dialogs = {}
        end
        for _,dlg in ipairs(dlgInfo) do
            local dlgId = dlg.id
            if dlgId then
              gDialogInfo.dialogs[dlgId] = dlg
            end
        end
        -- evaluate metaState:
        local busyDlgs = {}
        local pickableDlgs = {}
        for dlgId, dlg in pairs(gDialogInfo.dialogs) do
            local stateXml = dlg:find("state")
            local state = nil
            if stateXml and #stateXml >= 1 then state = stateXml[1] end
            if state ~= "terminated" then
                -- detailed state doesn't matter in park-orbits, it'll likely only contain confirmed dialogs and
                --  whatever the state, each call should be pickable
                pickableDlgs[#pickableDlgs+1] = dlgId
            end
        end
        if #pickableDlgs > 0 then
            gDialogInfo.activeDialogs = pickableDlgs
            gDialogInfo.metaState = "pickable"
        else
            gDialogInfo.activeDialogs = {}
            gDialogInfo.metaState = "free"
        end
        debug.log(gFctName..": state from Notify: "..gDialogInfo.metaState, "d")
    else
        debug.log(gFctName..": received empty notify from "..subscr:getUri() , "e")
    end
    updateKey()
end

local function unsubscribe()
    gSubscriptionIsWorking  = false
    gSubscriptionIsTrying = false
    gDialogInfo = nil
    if (gOngoingSubscription) then
        gOngoingSubscription:unsubscribe()
        gOngoingSubscription = nil
    end
end

local function subscriptionTerminated()
    gSubscriptionIsWorking  = false
    gSubscriptionIsTrying = false
    gDialogInfo = nil
    updateKey()
end

local function onSubscrIsTrying()
    gSubscriptionIsWorking  = false
    gSubscriptionIsTrying = true
    updateKey()
end

local function subscribe()
    unsubscribe()
    gOngoingSubscription = sip.subscribe{uri=pRemote, onNotify=handleNotify, line=pIdentity,
                                        onTerminated=subscriptionTerminated, onTrying=onSubscrIsTrying}
end

local function identityChanged(path)
    gPickupCode = config.get(gUserpath .. "pickupCode")
    gDoPickupWithReplaces = not gPickupCode or string.len(gPickupCode) == 0
    local new_user = config.get(gUserpath .. "username")
    local new_domain = sip.identities.getDomain(pIdentity);
    if new_user ~= gUser or new_domain ~= domain then
        unsubscribe()
        gUser = new_user
        gDomain = new_domain
        subscribe()
        updateKey()
    end
end

local function setupRegChange()
    config.register(gUserpath, identityChanged)
    identityChanged()
end

function onKeyUp()
    debug.log(gFctName.."-key pressed", "d")
    if not isValid() then
        debug.log("missing parameter(s), "..gFctName.."-key won't work ever", "e")
        return
    elseif gLastReportedState == "error" then
        debug.log(gFctName..": subscription had failed before, attempting restart", "d")
        subscribe()
        updateKey()
        return
    elseif gLastReportedState == "trying" then
        debug.log(gFctName..": subscription is being tried: stopping and restarting", "d")
        unsubscribe()
        subscribe()
        updateKey()
        return
    elseif gLastReportedState == "pickable" then
        debug.log(gFctName..": picking the call", "d")
        sip.invite{uri=pRemote, line=pIdentity, callLogNr=2}
    elseif gLocalCall then
        debug.log(gFctName..": parking call to "..gLocalCall:getRemote().." on orbit "..gRemoteUser, "d")
        gLocalCall:transfer(gRemoteUser)
    else
        debug.log(gFctName..": no call found that could be parked", "d")
    end
end

function initialize()
    if isValid() then
        setupRegChange()
    else
        debug.log("missing parameters, "..gFctName.."-key won't work", "e")
        updateKey()
        return
    end
    gRemoteUri = sipTools.parseUri{sipUri=pRemote, fromUserInput=true, idIdx=pIdentity}
    gRemoteUser = gRemoteUri:getUser()
    sip.calls.listen(onCallEvent)
    gFctName = "ParkOrbit["..gRemoteUri:getUiNumber().." on id "..pIdentity.."]"
    updateKey()
end

initialize()]]></code>
        <params>
          <param name="pRemote"/>
          <param name="pIdentity"/>
        </params>
      </lua>
    </keyConfiguration>
    <parameters>
      <parameter name="@string/uri" type="sip_uri">
        <path>//param[@name="pRemote"]/value</path>
      </parameter>
      <parameter optional="true" name="@string/identity" type="identity">
        <path>//param[@name="pIdentity"]/value</path>
      </parameter>
    </parameters>
  </template>
  <template prio="10" name="@string/do_not_disturb_title" icon="@drawable/dnd">
    <keyConfiguration>
      <function>
        <invocations>
          <invocation>
            <setting path="/telephony/doNotDisturb/active">
              <values>
                <value>true</value>
                <led ledColor="red"/>
               </values>
               <values>
                 <value>false</value>
                 <led ledColor="off"/>
               </values>
            </setting>
          </invocation>
        </invocations>
      </function>
    </keyConfiguration>
  </template>
  <template prio="10" name="@string/call_forwarding_unconditional_title" icon="@drawable/call_forwarding">
    <keyConfiguration>
      <lua>
        <code>
local startMe = require "local_forward"
startMe("unconditional", pTarget)
        </code>
        <params>
          <param name="pTarget"/>
        </params>
      </lua>
    </keyConfiguration>
    <parameters>
      <parameter name="@string/uri" type="sip_uri" optional="true">
        <path>//param[@name="pTarget"]/value</path>
      </parameter>
    </parameters>
  </template>
  <template prio="10" name="@string/call_forwarding_busy_title" icon="@drawable/call_forwarding">
    <keyConfiguration>
      <lua>
        <code>
local startMe = require "local_forward"
startMe("busy", pTarget)
        </code>
        <params>
          <param name="pTarget"/>
        </params>
      </lua>
    </keyConfiguration>
    <parameters>
      <parameter name="@string/uri" type="sip_uri" optional="true">
        <path>//param[@name="pTarget"]/value</path>
      </parameter>
    </parameters>
  </template>
  <template prio="10" name="@string/call_forwarding_no_response_title" icon="@drawable/call_forwarding">
    <keyConfiguration>
      <lua>
        <code>
local startMe = require "local_forward"
startMe("noResponse", pTarget)
        </code>
        <params>
          <param name="pTarget"/>
        </params>
      </lua>
    </keyConfiguration>
    <parameters>
      <parameter name="@string/uri" type="sip_uri" optional="true">
        <path>//param[@name="pTarget"]/value</path>
      </parameter>
    </parameters>
  </template>
  <template prio="10" name="@string/http_request_title" label="@param-@string/web_url" icon="@drawable/http_request">
    <keyConfiguration>
      <function>
        <invocations>
          <invocation>
            <http>
              <request httpMethod="get">
                <uri></uri>
              </request>
              <httpReactions>
                <responseCode ledColor="off">
                  <responseCode>200</responseCode>
                </responseCode>
              </httpReactions>
            </http>
          </invocation>
        </invocations>
      </function>
    </keyConfiguration>
    <parameters>
      <parameter name="@string/web_url" type="web_uri">
        <path>//uri</path>
      </parameter>
    </parameters>
  </template>
  <template prio="10" name="@string/browser" label="@param-@string/web_url" icon="@drawable/http_request">
     <keyConfiguration>
       <function>
         <invocations>
           <invocation>
             <intent>
               <action>android.intent.action.VIEW</action>
               <data></data>
               <component>org.mozilla.klar/org.mozilla.focus.activity.IntentReceiverActivity</component>
             </intent>
           </invocation>
         </invocations>
       </function>
     </keyConfiguration>
     <parameters>
       <parameter name="@string/web_url" type="web_uri">
         <path>//data</path>
       </parameter>
    </parameters>
  </template>
  <template prio="10" name="@string/bluetooth" icon="@drawable/bluetooth">
    <keyConfiguration>
      <lua>
        <code><![CDATA[
local adapter_state = 0
local function onStateChanged(state, name)
  adapter_state = state
  local color = "off"
  local blink = false
  if (state == -2) then
    color = "orange"
    blink = false
  elseif (state == -1) then
    color = "orange"
    blink = false
  elseif (state == 0) then
    -- color off
  elseif (state == 2) then
    -- on
    color = "green"
    blink = false
  else
    -- turning on/off...
    color = "green"
    blink = true
  end
  key:setLed(color, blink)
end

function onKeyUp()
  -- enable when state is STATE OFF otherwise disable
  bluetooth.enable( adapter_state == 0 )
end

bluetooth.registerStateListener(onStateChanged) --]]></code>
      </lua>
    </keyConfiguration>
  </template>
  <template prio="10" name="@string/call_waiting_title" icon="@drawable/call_waiting">
    <keyConfiguration>
      <function>
        <invocations>
          <invocation>
            <setting path="/telephony/callWaiting/active">
              <values>
                <value>true</value>
                <led ledColor="green"/>
               </values>
               <values>
                 <value>false</value>
                 <led ledColor="off"/>
               </values>
            </setting>
          </invocation>
        </invocations>
      </function>
    </keyConfiguration>
  </template>
  <template prio="10" name="@string/clir_title" icon="@drawable/clir">
    <keyConfiguration>
      <function>
        <invocations>
          <invocation>
            <setting path="/telephony/clir/active">
              <values>
                <value>true</value>
                  <led ledColor="green"/>
                </values>
               <values>
                 <value>false</value>
                    <led ledColor="off"/>
               </values>
            </setting>
          </invocation>
        </invocations>
      </function>
    </keyConfiguration>
  </template>
  <template prio="10" name="@string/vpn" icon="@drawable/setting">
    <keyConfiguration>
      <lua>
        <code><![CDATA[local settingPath = "network/vpn/active"
local active = config.get( settingPath )
local vpnGoodViaNotification = false
local vpnGoodViaNetwork = false
local vpnHaveVpnNotis = false
local vpnNotis = {}


local function updateLed()
    if active == "true" then
        if vpnGoodViaNotification or vpnGoodViaNetwork then
            key:setLed( "green" )
        elseif vpnHaveVpnNotis then
            key:setLed( "orange", true )
        else
            key:setLed( "orange" )
        end
    else
        key:setLed( "off" )
    end
end

local function configListener( path )
    active = config.get( settingPath )
    updateLed()
end

function onKeyUp()
    if active == "false" then
        debug.log("turning VPN on")
        config.set( settingPath, "true" )
    else
        debug.log("turning VPN off")
        config.set( settingPath, "false" )
    end
end

local function onSuccessNotiConnected()
    vpnGoodViaNotification = true;
    updateLed()
end

local function onSuccessNotiConnectedStopped()
    vpnGoodViaNotification = false;
    updateLed()
end

local function onNotiConnected(note)
    vpnNotis[note:getId()] = true
    vpnHaveVpnNotis = true
    updateLed()
end

local function onNotiConnectedStopped(note)
    vpnNotis[note:getId()] = false
    -- one note was stopped but maybe another vpn-note is still active..
    local stillHaveVpn = false
    for _,isActive in pairs(vpnNotis) do
        if isActive then
            stillHaveVpn = true
            break
        end
    end
    vpnHaveVpnNotis = stillHaveVpn
    updateLed()
end

local function onVpnEstablished()
    vpnGoodViaNetwork = true;
    updateLed()
end

local function onVpnLost()
    vpnGoodViaNetwork = false;
    updateLed()
end

system.notifications.monitor{onCreated=onSuccessNotiConnected, onDeleted=onSuccessNotiConnectedStopped, pkg=system.notifications.constants.vpnPkg, id=system.notifications.constants.vpnIdSuccess}
system.notifications.monitor{onCreated=onNotiConnected, onDeleted=onNotiConnectedStopped, pkg=system.notifications.constants.vpnPkg}
system.network.monitor{onAvailable=onVpnEstablished, onLost=onVpnLost, transports="vpn"}
config.register( settingPath, configListener )
updateLed()--]]></code>
      </lua>
   </keyConfiguration>
  </template>
  <template prio="10" name="@string/dtmf_relay_title" label="@param-@string/dtmf_sequence" icon="@drawable/relay">
    <keyConfiguration>
      <lua>
        <code>
function onKeyUp()
  sip.calls.dtmf{dtmf = dtmf_sequence}
end
        </code>
        <params>
          <param name="dtmf_sequence"/>
        </params>
      </lua>
    </keyConfiguration>
    <parameters>
      <parameter name="@string/dtmf_sequence" type="phone">
        <path>//param[@name="dtmf_sequence"]/value</path>
      </parameter>
    </parameters>
  </template>

  <template name="@string/silent_alert" prio="10" icon="@drawable/bluelight">
    <keyConfiguration>
      <lua>
        <code>
          local silentAlertNotifyId = 24242
          local function onClickedNotify()
              http.get{url=url, verifyHostname=false, acceptUnsignedCerts=true}

              local notification = system.notifications.get{id=silentAlertNotifyId}
              if notification then
                  notification:delete()
              end
          end

          function onKeyUp()
              if url ~= nil and url ~= "" and delay ~= nil then
                  if delay ~= "" and tonumber(delay) > 0 then
                      system.notifications.add{tag="SilentAlertTag", id=silentAlertNotifyId, title="@string/silent_alert",
                                               message="@string/silent_alert_msg", autoClickDelay=tonumber(delay),
                                               alert=true, alertSound=false, alertOkText="@string/silent_alert_ok", alertCancelText="",
                                               onClicked=onClickedNotify}
                  else
                      http.get{url=url, verifyHostname=false, acceptUnsignedCerts=true}
                  end
              end
          end
        </code>
        <params>
          <param name="url"/>
          <param name="delay">
            <value>10</value>
          </param>
        </params>
      </lua>
    </keyConfiguration>
    <parameters>
      <parameter name="@string/silent_alert_url" type="web_uri">
        <path>//param[@name="url"]/value</path>
      </parameter>
      <parameter name="@string/silent_alert_delay" type="number" min="0" max="60">
        <path>//param[@name="delay"]/value</path>
      </parameter>
    </parameters>
  </template>
  <template name="@string/sip_message" prio="10" icon="@drawable/message_outline" label="@param-@string/param_message">
    <keyConfiguration>
      <lua>
        <code><![CDATA[
local TAG = "SipMsg-countdown from "..key.MODULE..":"..key.INDEX
local mOngoingAlertingId = nil

local function removeOngoingNotification()
  if mOngoingAlertingId then
    local notification = system.notifications.get{tag=TAG, id=mOngoingAlertingId}
    if notification then
      notification:delete()
    end
    mOngoingAlertingId = nil
  end
end

local function onClicked()
  sip.sendMessage{line=identity, message=msg, target=url}
  removeOngoingNotification()
end

function onKeyUp()
  if url ~= nil and url ~= "" and delay ~= nil then
    if delay ~= "" and tonumber(delay) > 0 then
      removeOngoingNotification()
      mOngoingAlertingId = system.notifications.getUniqueId()
      system.notifications.add { tag=TAG, id=mOngoingAlertingId, title="@string/sip_message", onClicked=onClicked,
                                 message=msg.."\n@string/silent_alert_msg", autoClickDelay=tonumber(delay), alert=true,
                                 alertSound=false, alertOkText="@string/silent_alert_ok", alertCancelText="",
                                 icon="@drawable/notification_icon_voice_bubble" }
    else
      sip.sendMessage{line=identity, message=msg, target=url}
    end
  end
end]]></code>
        <params>
          <param name="url"/>
          <param name="msg"/>
          <param name="identity"/>
          <param name="delay">
            <value>0</value>
          </param>
        </params>
      </lua>
    </keyConfiguration>
    <parameters>
      <parameter name="@string/uri" type="sip_uri">
        <path>//param[@name="url"]/value</path>
      </parameter>
      <parameter name="@string/identity" type="identity">
        <path>//param[@name="identity"]/value</path>
      </parameter>
      <parameter name="@string/param_message" type="text">
        <path>//param[@name="msg"]/value</path>
      </parameter>
      <parameter optional="true" name="@string/silent_alert_delay" type="number" min="0" max="60">
        <path>//param[@name="delay"]/value</path>
      </parameter>
    </parameters>
  </template>
  <template name="@string/pickup_app_name" icon="@drawable/pickup_fkey">
    <keyConfiguration>
        <lua>
            <code><![CDATA[
function onKeyUp()
  system.intent{action="auerswald.action.SHOW_PICKUP_LIST", component="de.auerswald.home"}
end

local function onHavePickups(havePickups)
  if havePickups then
    key:setLed("red", true)
  else
    key:setLed("off")
  end
end

system.monitorHavePickups{onHavePickupsChanged=onHavePickups};
]]></code>
        </lua>
    </keyConfiguration>
  </template>
  <template name="@string/cleanup_app_name" icon="@drawable/cleaning_timeout_fkey">
    <keyConfiguration>
        <lua>
            <code><![CDATA[
function onKeyUp()
  system.intent{action="auerswald.action.SHOW_CLEANING_COUNTDOWN", component="de.auerswald.home"}
end
]]></code>
        </lua>
    </keyConfiguration>
  </template>
  <template prio="10" name="@string/call_dtmf_menu" icon="@drawable/dtmf_menu">
    <keyConfiguration>
      <lua>
        <code><![CDATA[
local gRemoteUri = nil -- sipUri-object of remote
local gRemoteUser = nil -- user-part of remote uri
local gLabel = nil -- label set for the key (when != gRemoteUser -> show gRemoteUser in 2nd(info)-line)
local gLocalCallId = nil -- when we have local call with gRemoteUser -> store its call-id here (e.g. TC@4)
local gLocalCallState = nil -- when we have local call with gRemoteUser -> store its state here (calling, active, holding or ringing)
local gDtmfTodo = nil -- once call is accepted -> copy dtmf-parameter here. Every time dtmf digits are send or a pause is started it gets removed from this var. When var is empty -> end call
local gHaveStartedCallViaThisKey = false -- only grep local calls (to send dtmf) when it was caused thru key-press of this key
local gAutoEndCall = pAutoEndCall=="true" -- wether or not to end the call once all dtmf-digits have been send
local gPlzTriggerDtmf = false -- helper so dtmf-sending is triggered only once per call

local function isValid() -- reports if key has all it's params set to valid values.
  if pIdentity == "" or pIdentity == nil then
    pIdentity = "1" -- old wui's allowed to set no identity, let's fix this for the user
  end
  if pRemote == "" or pRemote == nil then
    return false
  end
  return true
end

local function getKeySettingsPath()
  if key and key.INDEX and key.MODULE then
    return "keys/"..key.MODULE.."/key[@keyNumber=\""..key.INDEX.."\"]"
  end
  return nil
end

local function updateKey()
  local desiredInfo = nil
  local desiredIcon = nil

  -- default to showing tel-nr in 2nd line (when it's not already shown in 1st line)
  if gLabel and gLabel ~= gRemoteUser and gLabel ~= "" then
    desiredInfo = gRemoteUser
  end

  if not isValid() then
    gLastReportedState = "error"
    key:setLed("orange", false)
    desiredInfo = "@string/setup_failed"
    desiredIcon = "@drawable/block"
  else
    gLastReportedState = "idle"
    if gLocalCallState == "calling" then
      gLastReportedState = "calling"
      key:setLed("red", true)
      desiredInfo = "@string/callstate_calling"
    elseif gLocalCallState == "ringing" then
      gLastReportedState = "ringing"
      key:setLed("red", true)
      desiredInfo = "@string/callstate_ringing"
    elseif gLocalCallState == "holding" then
      gLastReportedState = "holding"
      key:setLed("red", true)
      desiredInfo = "@string/callstate_holding"
    elseif gLocalCallState == "active" then
      gLastReportedState = "active"
      key:setLed("red", false)
      desiredInfo = "@string/callstate_active"
    else
      key:setLed("off")
    end
  end
  key:setInfo(desiredInfo)
  key:setIcon(desiredIcon)
end

function doNextDtmf()
  if not gDtmfTodo or string.len(gDtmfTodo) <= 0 then
    debug.log(gFctName..": done with dtmf-sequence, ending call", "d")
    if gAutoEndCall then
      sip.calls.terminate(gLocalCallId)
    end
  else
    if string.sub(gDtmfTodo, 1, 1) == "," then
      debug.log(gFctName..": pausing", "d")
      gDtmfTodo = string.sub(gDtmfTodo, 2)
      time.callbackIn(doNextDtmf, 0.2)
    else
      local nextPauseIdx = string.find(gDtmfTodo, ",")
      local dtmfNow = nil
      if nextPauseIdx and nextPauseIdx > 0 then
        dtmfNow = string.sub(gDtmfTodo, 1, nextPauseIdx - 1)
        gDtmfTodo = string.sub(gDtmfTodo, nextPauseIdx)
      else
        dtmfNow = gDtmfTodo
        gDtmfTodo = nil
      end
        debug.log(gFctName..": sending dtmf sequence "..dtmfNow, "i")
      sip.calls.dtmf{dtmf=dtmfNow}
      time.callbackIn(doNextDtmf, 0.3 * string.len(dtmfNow)) -- give phone time to send the digits
    end
  end
end

function onCallEvent(event, call1, call2)
  if event == nil or call1 == nil then
    debug.log(gFctName..": invalid parameters at callListChanged("..tostring(event).." ,"..tostring(call1)..")", "e")
    return
  end
  local callId = call1:getId()
  local state = call1:getState()
  local number, name = call1:getRemote()
  debug.log("received "..tostring(event).." for call to "..tostring(number)..", state="..tostring(state)..", callId="..tostring(callId), "v")
  local remoteUri = sipTools.parseUri{sipUri=number}
  local remoteUser = remoteUri:getUser()
  if remoteUser ~= gRemoteUser then
    if callId == gLocalCallId then
      debug.log("call-partner of local "..callId.." changed, call no longer belongs to "..gFctName, "d")
      gDtmfTodo = nil
      gLocalCallId = nil
      gLocalCallState = nil
      updateKey()
    end
    return
  end
  if state == "calling" or state == "ringing" or state == "active" or state == "holding" then
    if gLocalCallId ~= callId then
      if gHaveStartedCallViaThisKey then
        debug.log(gFctName.." found new local call "..callId.." in state "..state, "d")
        gPlzTriggerDtmf = true
      else
        -- ignore call that was not started via this dtmf-menu-key
        return
      end
    elseif gLocalCallState ~= state then
      debug.log(gFctName.." "..callId.." changed state to "..state, "d")
    end
    gLocalCallId = callId
    gLocalCallState = state
    if state == "active" and gPlzTriggerDtmf then
      gPlzTriggerDtmf = false
      gDtmfTodo = pDtmfSequence
      doNextDtmf()
    end
  else
    debug.log(gFctName.." "..callId.." ended", "d")
    gDtmfTodo = nil
    gLocalCallId = nil
    gLocalCallState = nil
  end
  updateKey()
end

function stopScanningCalls()
  gHaveStartedCallViaThisKey = false
end

function onKeyUp()
  debug.log(gFctName.."-key pressed", "d")
  if not isValid() then
    debug.log("missing parameter(s), "..gFctName.."-key won't work ever", "e")
    return
  elseif gLastReportedState == "calling" then
    debug.log(gFctName..": outgoing call thats not connected yet -> ignore key-press", "d")
    return
  elseif gLastReportedState == "active" then
    debug.log(gFctName..": connected call -> ignore key-press", "d")
    return
  elseif gLastReportedState == "holding" then
    debug.log(gFctName..": held call -> ignore key-press", "d")
    return
  elseif gLastReportedState == "ringing" then
    debug.log(gFctName..": ringing call -> ignore key-press", "d")
    return
  elseif gHaveStartedCallViaThisKey then
    debug.log(gFctName..": already started new call moments ago -> ignore key-press to start another", "d")
  else
    debug.log(gFctName..": calling "..pRemote, "d")
    gHaveStartedCallViaThisKey = true
    sip.invite{uri=pRemote, line=pIdentity, hidden=false}
    time.callbackIn(stopScanningCalls, 4)
  end
end


function initialize()
  key:setInfo("initializing")
  if not isValid() then
    debug.log("missing parameters, "..gFctName.."-key won't work", "e")
    updateKey()
    return
  end
  gRemoteUri = sipTools.parseUri{sipUri=pRemote, fromUserInput=true, idIdx=pIdentity}
  gRemoteUser = gRemoteUri:getUser()
  sip.calls.listen{callback=onCallEvent, line=pIdentity, user=gRemoteUser}
  if key and key.INDEX and key.MODULE then
    gFctName = "DTMF_MENU["..gRemoteUri:getUiNumber().." on "..key.INDEX.."@"..key.MODULE.."]"
  else
    gFctName = "DTMF_MENU["..gRemoteUri:getUiNumber().." on id "..pIdentity.."]"
  end
  local cfgPath = getKeySettingsPath()
  if cfgPath then
    gLabel = config.get(cfgPath.."/@label")
  end
  updateKey()
end

initialize()]]></code>
        <params>
          <param name="pRemote"/>
          <param name="pIdentity"/>
          <param name="pDtmfSequence"/>
          <param name="pAutoEndCall"><value>true</value></param>
        </params>
      </lua>
    </keyConfiguration>
    <parameters>
      <parameter name="@string/uri" type="sip_uri">
        <path>//param[@name="pRemote"]/value</path>
      </parameter>
      <parameter name="@string/identity" type="identity">
        <path>//param[@name="pIdentity"]/value</path>
      </parameter>
      <parameter optional="true" name="@string/dtmf_sequence" type="phone">
        <path>//param[@name="pDtmfSequence"]/value</path>
      </parameter>
      <parameter optional="true" name="@string/end_call_when_finshed" type="boolean">
        <path>//param[@name="pAutoEndCall"]/value</path>
      </parameter>
    </parameters>
  </template>
  <template prio="10" name="@string/auto_popup_pickup_list_toggle" icon="@drawable/pickup_fkey">
    <keyConfiguration>
      <lua>
        <code><![CDATA[
local startMe = require "local_settings_toggle_key"
local mPath = "/telephony/pickupScreen/showWhenNewPickupAvailable"
local mName = "EnableAutomaticPickupListToggleKey("..key.MODULE..":"..key.INDEX..")"
startMe(mName, mPath, "true", "green", "false", "off")
--]]></code>
      </lua>
    </keyConfiguration>
  </template>
  <template prio="10" name="@string/mute_ring_signal" icon="@drawable/signal_ring_off">
    <keyConfiguration>
      <lua>
        <code><![CDATA[
local startMe = require "local_settings_toggle_key"
local mPath = "/sound/volumes/ringing"
local mLoudValue = config.get(mPath)
local mName = "MuteRingingToggleKey("..key.MODULE..":"..key.INDEX..")"

function onCfgChanged()
  local current = config.get(mPath)
  if current ~= "0" then
    debug.log(mName..": updating loud value to "..current)
    mLoudValue = current
  end
end
config.register(mPath, onCfgChanged)

function getLoudVolume()
  return mLoudValue
end

if mLoudValue == "0" then
  mLoudValue = "7"
end

startMe(mName, mPath, "0", "red", getLoudVolume, "off")
--]]></code>
      </lua>
    </keyConfiguration>
  </template>
</templates>