from PySide2.QtCore import Qt
from PySide2.QtWidgets import (
    QFrame,
    QGridLayout,
    QScrollArea,
    QVBoxLayout,
    QWidget,
    QMessageBox,
)
from dcs.task import PinpointStrike
from dcs.unittype import FlyingType, UnitType

from game import db
from game.theater import ControlPoint
from qt_ui.models import GameModel
from qt_ui.windows.basemenu.QRecruitBehaviour import QRecruitBehaviour


class QArmorRecruitmentMenu(QFrame, QRecruitBehaviour):

    def __init__(self, cp: ControlPoint, game_model: GameModel):
        QFrame.__init__(self)
        self.cp = cp
        self.game_model = game_model

        self.bought_amount_labels = {}
        self.existing_units_labels = {}

        self.init_ui()

    def init_ui(self):
        main_layout = QVBoxLayout()

        units = {
            PinpointStrike: db.find_unittype(PinpointStrike,
                                             self.game_model.game.player_name),
        }

        scroll_content = QWidget()
        task_box_layout = QGridLayout()
        scroll_content.setLayout(task_box_layout)
        row = 0

        for task_type in units.keys():
            units_column = list(set(units[task_type]))
            if len(units_column) == 0: continue
            units_column.sort(key=lambda x: db.PRICES[x])
            for unit_type in units_column:
                row = self.add_purchase_row(unit_type, task_box_layout, row)
            stretch = QVBoxLayout()
            stretch.addStretch()
            task_box_layout.addLayout(stretch, row, 0)

        scroll_content.setLayout(task_box_layout)
        scroll = QScrollArea()
        scroll.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
        scroll.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOn)
        scroll.setWidgetResizable(True)
        scroll.setWidget(scroll_content)
        main_layout.addWidget(scroll)
        self.setLayout(main_layout)

    def sell(self, unit_type: UnitType):
        if self.pending_deliveries.available_next_turn(unit_type) <= 0:
            QMessageBox.critical(
                self, "Could not sell ground unit",
                f"Attempted to sell one {unit_type.id} at {self.cp.name} "
                "but none are available.", QMessageBox.Ok)
            return
        super().sell(unit_type)