#!/usr/bin/env python3

import argparse
import asyncio
import atexit
import os

# Quamash must be imported first so that pyqtgraph picks up the Qt binding
# it has chosen.
from quamash import QEventLoop, QtGui
from pyqtgraph import dockarea

from artiq.protocols.file_db import FlatFileDB
from artiq.protocols.pc_rpc import AsyncioClient
from artiq.gui.explorer import ExplorerDock
from artiq.gui.moninj import MonInj
from artiq.gui.results import ResultsDock
from artiq.gui.parameters import ParametersDock
from artiq.gui.schedule import ScheduleDock
from artiq.gui.log import LogDock
from artiq.gui.console import ConsoleDock


data_dir = os.path.join(os.path.abspath(os.path.dirname(__file__)),
                        "..", "gui")


def get_argparser():
    parser = argparse.ArgumentParser(description="ARTIQ GUI client")
    parser.add_argument(
        "-s", "--server", default="::1",
        help="hostname or IP of the master to connect to")
    parser.add_argument(
        "--port-notify", default=3250, type=int,
        help="TCP port to connect to for notifications")
    parser.add_argument(
        "--port-control", default=3251, type=int,
        help="TCP port to connect to for control")
    parser.add_argument(
        "--db-file", default="artiq_gui.pyon",
        help="database file for local GUI settings")
    return parser


class _MainWindow(QtGui.QMainWindow):
    def __init__(self, app):
        QtGui.QMainWindow.__init__(self)
        self.setWindowIcon(QtGui.QIcon(os.path.join(data_dir, "icon.png")))
        self.resize(1400, 800)
        self.setWindowTitle("ARTIQ")
        self.exit_request = asyncio.Event()

    def closeEvent(self, *args):
        self.exit_request.set()

def main():
    args = get_argparser().parse_args()

    db = FlatFileDB(args.db_file, default_data=dict())

    app = QtGui.QApplication([])
    loop = QEventLoop(app)
    asyncio.set_event_loop(loop)
    atexit.register(lambda: loop.close())

    schedule_ctl = AsyncioClient()
    loop.run_until_complete(schedule_ctl.connect_rpc(
        args.server, args.port_control, "master_schedule"))
    atexit.register(lambda: schedule_ctl.close_rpc())

    win = _MainWindow(app)
    area = dockarea.DockArea()
    win.setCentralWidget(area)
    status_bar = QtGui.QStatusBar()
    status_bar.showMessage("Connected to {}".format(args.server))
    win.setStatusBar(status_bar)

    d_explorer = ExplorerDock(win, status_bar, schedule_ctl)
    loop.run_until_complete(d_explorer.sub_connect(
        args.server, args.port_notify))
    atexit.register(lambda: loop.run_until_complete(d_explorer.sub_close()))

    d_results = ResultsDock(win, area)
    loop.run_until_complete(d_results.sub_connect(
        args.server, args.port_notify))
    atexit.register(lambda: loop.run_until_complete(d_results.sub_close()))

    d_ttl_dds = MonInj()
    loop.run_until_complete(d_ttl_dds.start(args.server, args.port_notify))
    atexit.register(lambda: loop.run_until_complete(d_ttl_dds.stop()))

    d_params = ParametersDock()
    loop.run_until_complete(d_params.sub_connect(
        args.server, args.port_notify))
    atexit.register(lambda: loop.run_until_complete(d_params.sub_close()))

    area.addDock(d_ttl_dds.dds_dock, "top")
    area.addDock(d_ttl_dds.ttl_dock, "above", d_ttl_dds.dds_dock)
    area.addDock(d_results, "above", d_ttl_dds.ttl_dock)
    area.addDock(d_params, "above", d_results)
    area.addDock(d_explorer, "above", d_params)

    d_schedule = ScheduleDock(status_bar, schedule_ctl)
    loop.run_until_complete(d_schedule.sub_connect(
        args.server, args.port_notify))
    atexit.register(lambda: loop.run_until_complete(d_schedule.sub_close()))

    d_log = LogDock()
    loop.run_until_complete(d_log.sub_connect(
        args.server, args.port_notify))
    atexit.register(lambda: loop.run_until_complete(d_log.sub_close()))

    pdb = AsyncioClient()
    loop.run_until_complete(pdb.connect_rpc(
        args.server, args.port_control, "master_pdb"))
    atexit.register(lambda: pdb.close_rpc())
    def _get_parameter(k, v):
        asyncio.async(pdb.set(k, v))
    d_console = ConsoleDock(
        d_params.get_parameter,
        _get_parameter,
        d_results.get_result)

    area.addDock(d_console, "bottom")
    area.addDock(d_log, "above", d_console)
    area.addDock(d_schedule, "above", d_log)

    win.show()
    loop.run_until_complete(win.exit_request.wait())

if __name__ == "__main__":
    main()