; extensions.conf - the Asterisk dial plan
[general]
static=yes
writeprotect=no
clearglobalvars=no

[handler]
exten => addheader,1,NoOP(Add ${ARG1} to SIP as X-CallId)
same => n,NoOP(Add ${ARG2} to SIP as X-Original-Calling-Number)
same => n,Set(PJSIP_HEADER(add,X-CallId)=${ARG1})
same => n,Set(PJSIP_HEADER(add,X-Original-Calling-Number)=${ARG2})

[contact-center]
exten => _+X.,1,NoOP(Inbound Contact Center)
same => n,Answer()
same => n,Wait(1)
same => n,Set(CALL_ID=${RAND(10000000,99999999)})
same => n,Set(CALLING_NUM=${CALLERID(num)})
same => n,Set(CALLERID(num)=PSTN_PHONE_NUMBER)
same => n,Dial(PJSIP/+18005551212@SMAVoiceConnector,,gb(handler^addheader^1(${CALL_ID},${CALLING_NUM})))
same => n,Set(CALL_ROUTE=${SHELL(curl --silent API_URLquery?xCallId=${CALL_ID} | jq -r .CallRoute )})
same => n,NoOp(${CALL_ROUTE})
same => n,GotoIf($[${CALL_ROUTE} = CallAgent]?callAgent:disconnect)

same => n(callAgent),NoOp(CallAgent)
same => n,GotoIf($[${DEVICE_STATE(PJSIP/agent)}=UNAVAILABLE]?noAgent:agentAvailable)

same => n(agentAvailable),NoOp(CallAgent)
same => n,Dial(PJSIP/agent,,b(handler^addheader^1(${CALL_ID})))
same => n,Hangup()

same => n(noAgent),NoOP(NoAgent)
same => n,Playback(/var/lib/asterisk/sounds/en/noAgent)
same => n,Hangup()

same => n(disconnect),NoOp(Disconnect)
same => n,Playback(/var/lib/asterisk/sounds/en/disconnecting)
same => n,Hangup()

[from-voiceConnector]
include => contact-center