import gi
import os
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk, GObject
from mods.db import Patient, store_patient_index, search_patients, db
from datetime import date
import peewee

resource_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'res')
ui_dir = os.path.join(resource_dir, 'ui')
main_win_file = os.path.join(ui_dir, 'main_win.glade')
new_patient_win_file = os.path.join(ui_dir, 'new_patient_win.glade')

builder = Gtk.Builder()

class PatientFilter:
    def __init__(self):
        self.reset()
    def filter(self, query):
        if query != self.fstr:
            self.fstr = query
            self.ids = list(map(lambda x: x.id, search_patients(query)))
        return self.ids
    def reset(self):
        self.fstr = ''
        self.ids = []
patient_filter = PatientFilter()

class PatientRow(Gtk.ListBoxRow):
    @GObject.Property
    def db_id(self):
        return self._db_id

    @db_id.setter
    def my_custom_property(self, value):
        self._db_id = value

class MainWinHandler:
    def main_win_close(self, *args):
        Gtk.main_quit()
    def show_new_patient_win(self, button):
        new_patient_win = create_new_patient_win()
        new_patient_win.show_all()
    def patient_filter_changed(self, filter_widget):
        pl = builder.get_object('patient_list')
        pl.unselect_all()
        pl.invalidate_filter()
        '''pl = builder.get_object('patient_list')
        for r in pl.get_children():
            pl.remove(r)
        fstr = builder.get_object('patient_filter').get_text().strip()
        if not fstr:
            for p in Patient.select():
                pl.add(build_patient_row(p))
        else:
            patients = search_patients(fstr)
            for p in patients:
                pl.add(build_patient_row(p))
        pl.show_all()'''

def build_patient_row(patient):
    row = PatientRow()
    row.props.db_id = patient.id
    label = Gtk.Label(f'{" ".join([patient.last_name, patient.first_name, patient.middle_name])}, {patient.birth_date}', xalign=0)
    row.add(label)
    return row
def patient_sort_func(row1, row2, *a):
    text1 = row1.get_children()[0].get_text()
    text2 = row2.get_children()[0].get_text()
    return (text1 > text2) - (text1 < text2)
def patient_filter_func(row):
    fstr = builder.get_object('patient_filter').get_text().strip()
    if not fstr:
        patient_filter.reset()
        return True
    return row.props.db_id in patient_filter.filter(fstr)

builder.add_from_file(main_win_file)
builder.connect_signals(MainWinHandler())
patient_list = builder.get_object('patient_list')
patient_list.set_sort_func(patient_sort_func)
patient_list.set_filter_func(patient_filter_func)
with db.atomic():
    for p in Patient.select():
        patient_list.add(build_patient_row(p))

def show_msg(text, sec_text='', level='info'):
    msg_win_file = os.path.join(ui_dir, f'{level}_win.glade')
    b = Gtk.Builder()
    b.add_from_file(msg_win_file)
    w = b.get_object(level)
    w.set_property('text',text)
    w.set_property('secondary_text',sec_text)
    w.run()
    w.close()

def create_new_patient_win():
    b = Gtk.Builder()
    class NewPatienWinHandler:
        def only_digits(self, entry):
            text = entry.get_text()
            text = ''.join(filter(lambda x: x.isdigit(), text))
            entry.set_text(text)
        def save_patient(self, *args):
            l_name = b.get_object('last_name').get_text().replace(' ', '')
            f_name = b.get_object('first_name').get_text().replace(' ', '')
            m_name = b.get_object('middle_name').get_text().replace(' ', '')
            if '' in (l_name, f_name):
                return show_msg('Не указаны имя или фамилия', 'Данные поля должны быть заполнены', level='warn')
            try:
                birth_d = int(b.get_object('birth_day').get_text())
                if birth_d < 1 or birth_d > 31:
                    return show_msg('Неверный день месяца', 'Укажите число в диапазоне 1-31', level='warn')
                birth_m = int(b.get_object('birth_month').get_text())
                if birth_m < 1 or birth_m > 12:
                    return show_msg('Неверный номер месяца', 'Укажите число в диапазоне 1-12', level='warn')
                birth_y = int(b.get_object('birth_year').get_text())
            except ValueError:
                return show_msg('Неверно указана дата рождения', 'Все поля даты должны быть заполнены', level='warn')
            gender = b.get_object('gender').get_active_id()
            if not gender:
                return show_msg('Не выбран пол', level='warn')
            birth_date = date(birth_y, birth_m, birth_d)
            with db.atomic():
                try:
                    patient = Patient.create(
                        last_name=l_name,
                        first_name=f_name,
                        middle_name=m_name,
                        birth_date=birth_date,
                        gender=gender
                        )
                except peewee.IntegrityError:
                    return show_msg('Данный пациент уже существует', 'Пациент с указанными фамилией, именем\nи датой рождения уже есть с базе данных', level='warn')
                store_patient_index(patient)
            row = build_patient_row(patient)
            patient_list.add(row)
            patient_list.select_row(row)
            patient_list.show_all()
            b.get_object('new_patient_window').close()
    b.add_from_file(new_patient_win_file)
    b.connect_signals(NewPatienWinHandler())
    w = b.get_object('new_patient_window')
    return w

main_win = builder.get_object('main_window')
main_win.show_all()
Gtk.main()