#!/usr/bin/python3

"""

YMS native GUI.
Runs as user SYSTEM with id=0

Configuration file located at ~/.config/ymsgui.conf:
  [DB]
  host = localhost
  db = yms
  user = ymsgui
  pass = topsecret

  [Documents]
  basepath = /var/local/yms

"""

import os
import sys
import locale
import gettext
import configparser

os.environ["NO_AT_BRIDGE"] = "1" # fix dbus warnings
import gi
gi.require_version("Gtk", "3.0")
from gi.repository import GLib, Gtk

from yms import database
from yms import gtkutils

cfg = {
    'cfgfile': '~/.config/ymsgui.conf',
    'host': 'localhost',
    'db': 'yms',
    'user': 'yms',
    'docpath': '/var/local/yms'
}

class Frontend():

    def __init__(self):
        builder = Gtk.Builder()
        builder.add_from_file("yms/ui/main.ui")
        builder.connect_signals(self)
        self.window = builder.get_object("wnd_main")
        gtkutils.init_named_controls(self, builder)

        # get current vessel id
        db.cur.execute("SELECT valint FROM settings WHERE userid=0 AND sno=1")
        row = db.cur.fetchone()
        if not row:
            self.vid = 0
            self.vname = "Ghost"
            db.cur.execute("INSERT INTO settings (userid, sno, valint) VALUES (0, 1, 0)")
            db.conn.commit()
        else:
            self.vid = row[0]
        # get vessel infos
        if self.vid > 0:
            db.cur.execute("SELECT vesselname, model FROM vessel WHERE vid=%s", (self.vid, ))
            self.vessel = db.cur.fetchone()
            print(self.vessel['vesselname'])
        else:
            self.vname = "Ghost(0)"

        # get list of vessels
        db.cur.execute("SELECT vid, vesselname, model FROM vessel ORDER BY vid")
        for row in db.cur.fetchall():
            print(row)
        #print(type(self.combo['vessel']))

    def run(self):
        self.label['vessel'].set_text(self.vname)
        self.window.show_all()
        Gtk.main()

    def on_but_info_clicked(self, widget):
        # Userlist
        sql = ("SELECT userid, login, displayname FROM user ORDER BY login")
        db.cur.execute(sql)
        for row in db.cur.fetchall():
            print(row)

    def on_but_equip_detail_clicked(self, widget):
        self.stack['equipment'].set_visible_child(self.box['equip_detail'])

    def on_but_equip_edit_clicked(self, widget):
        self.stack['equipment'].set_visible_child(self.box['equip_edit'])

    def on_but_equip_save_clicked(self, widget):
        pass

    def on_but_equip_cancel_clicked(self, widget):
        self.stack['equipment'].set_visible_child(self.box['equipment'])

    def on_but_equip_cancel_clicked(self, widget):
        self.stack['equipment'].set_visible_child(self.box['equipment'])

    def on_destroy(self, widget, data=None):
        Gtk.main_quit()

def messagebox(messagetext, symbol=None, title=None, parent=None):
    if not symbol:
        symbol = Gtk.MessageType.INFO
    if parent:
        symbol |= Gtk.DIALOG_DESTROY_WITH_PARENT
    md = Gtk.MessageDialog(parent=parent, flags=0, message_type=symbol, buttons=Gtk.ButtonsType.CLOSE)
    md.set_markup(messagetext)
    if title:
        md.set_title(title)
    if not parent:
        md.set_position(Gtk.WindowPosition.CENTER)
    md.run()
    md.destroy()

def create_config(cfgfile):
    # create inital config file
    with open(cfgfile, 'w') as fh:
        fh.write('[DB]\n')
        fh.write('host = {}\n'.format(cfg['host']))
        fh.write('db = {}\n'.format(cfg['db']))
        fh.write('user = {}\n'.format(cfg['user']))
        fh.write('pass = changeme!\n\n')
        fh.write('[documents]\n')
        fh.write('basepath = {}\n'.format(cfg['docpath']))
    # secure configuration
    os.chmod(cfgfile, 0o600)

if __name__ == "__main__":
    locale.setlocale(locale.LC_ALL, '')
    gettext.bindtextdomain('ymsgui', 'locale')
    gettext.textdomain('ymsgui')
    _ = gettext.gettext
    config = configparser.ConfigParser()
    cfgfile = os.path.expanduser(cfg['cfgfile'])
    if not config.read(cfgfile):
        create_config(cfgfile)
        messagebox(_("Configuration file '%s' not found.\n"
                     "Default configuration has been created.\n"
                     "Please edit that file according to your needs.\n\n"
                     "Then restart this program."
                     ) % cfgfile, title="YMS")
    else:
        cfg['host'] = config.get('DB', 'host')
        cfg['db'] = config.get('DB', 'db')
        cfg['user'] = config.get('DB', 'user')
        cfg['pass'] = config.get('DB', 'pass')
        db = database.Database(cfg['host'], cfg['db'])
        if db.connect(cfg['user'], cfg['pass']):
            app = Frontend()
            app.run()
            db.disconnect()
        else:
            errno, errtxt = db.last_error()
            messagebox(_("Database connection cannot be established.\n\n"
                         "Server: %s\nDatabase: %s\n"
                         "Error: %s (%d)"
                         ) % (cfg['host'], cfg['db'], errtxt, errno), title="YMS")

# Another fine product of the sirius cybernetics corporation