#!/usr/bin/env python3
from osmo_gsm_tester.testenv import *

def call_test_setup_run(bts_setup_cb=None, gprs_enable=True):
    hlr = suite.hlr()
    bts = suite.bts()
    mgw_msc = suite.mgw()
    mgw_bsc = suite.mgw()
    stp = suite.stp()
    msc = suite.msc(hlr, mgw_msc, stp)
    bsc = suite.bsc(msc, mgw_bsc, stp)
    ms_mo = suite.modem()
    ms_mt = suite.modem()

    if bts_setup_cb is not None:
        bts_setup_cb(bts)

    if gprs_enable:
        ggsn = suite.ggsn()
        sgsn = suite.sgsn(hlr, ggsn)
        sgsn.bts_add(bts)
        ggsn.start()
        sgsn.start()

    hlr.start()
    stp.start()
    msc.start()
    mgw_msc.start()
    mgw_bsc.start()

    bsc.bts_add(bts)
    bsc.start()

    bts.start()
    wait(bsc.bts_is_connected, bts)

    hlr.subscriber_add(ms_mo)
    hlr.subscriber_add(ms_mt)

    ms_mo.connect(msc.mcc_mnc())
    ms_mt.connect(msc.mcc_mnc())

    ms_mo.log_info()
    ms_mt.log_info()

    print('waiting for modems to attach...')
    wait(ms_mo.is_connected, msc.mcc_mnc())
    wait(ms_mt.is_connected, msc.mcc_mnc())
    wait(msc.subscriber_attached, ms_mo, ms_mt)

    assert len(ms_mo.call_id_list()) == 0 and len(ms_mt.call_id_list()) == 0
    mo_cid = ms_mo.call_dial(ms_mt)
    mt_cid = ms_mt.call_wait_incoming(ms_mo)
    print('dial success')

    assert not ms_mo.call_is_active(mo_cid) and not ms_mt.call_is_active(mt_cid)
    ms_mt.call_answer(mt_cid)
    wait(ms_mo.call_is_active, mo_cid)
    wait(ms_mt.call_is_active, mt_cid)
    print('answer success, call established and ongoing')

    sleep(5) # maintain the call active for 5 seconds

    assert ms_mo.call_is_active(mo_cid) and ms_mt.call_is_active(mt_cid)
    ms_mt.call_hangup(mt_cid)
    wait(lambda: len(ms_mo.call_id_list()) == 0 and len(ms_mt.call_id_list()) == 0)
    print('hangup success')