"""
점심/저녁 실제 시간 입력 다이얼로그.

기본 60분 자동 차감 모드와 별개로, 사용자가 정확한 시작/종료 시각을
입력하면 그 값을 break_records.break_type='lunch'/'dinner'로 저장.
"""
from __future__ import annotations
from datetime import datetime, timedelta
from PyQt5.QtWidgets import (QDialog, QVBoxLayout, QHBoxLayout, QLabel,
                             QPushButton, QTimeEdit, QMessageBox)
from PyQt5.QtCore import QTime, Qt

from ui.styles import apply_dark_titlebar


class MealTimeDialog(QDialog):
    """점심/저녁 실제 시작·종료 시간 입력."""

    def __init__(self, parent=None, meal_type: str = 'lunch', default_minutes: int = 60):
        super().__init__(parent)
        self.meal_type = meal_type
        title_kr = '점심' if meal_type == 'lunch' else '저녁'
        self.setWindowTitle(f"{title_kr} 시간 입력")
        self.setModal(True)
        self.setFixedSize(360, 220)

        layout = QVBoxLayout()
        layout.setSpacing(10)
        layout.setContentsMargins(20, 16, 20, 16)

        info = QLabel(f"{title_kr} 시작·종료 시각을 입력하세요.\n자동 적용된 {default_minutes}분 대신 정확한 시간으로 기록됩니다.")
        info.setWordWrap(True)
        info.setStyleSheet("color: #888; padding-bottom: 6px;")
        layout.addWidget(info)

        # 시작
        start_row = QHBoxLayout()
        start_row.addWidget(QLabel("시작:"))
        self.start_edit = QTimeEdit()
        self.start_edit.setDisplayFormat("HH:mm")
        # 기본값: 점심=12:00, 저녁=18:00
        default_start = QTime(12, 0) if meal_type == 'lunch' else QTime(18, 0)
        self.start_edit.setTime(default_start)
        start_row.addWidget(self.start_edit)
        start_row.addStretch()
        layout.addLayout(start_row)

        # 종료
        end_row = QHBoxLayout()
        end_row.addWidget(QLabel("종료:"))
        self.end_edit = QTimeEdit()
        self.end_edit.setDisplayFormat("HH:mm")
        default_end = QTime(13, 0) if meal_type == 'lunch' else QTime(19, 0)
        self.end_edit.setTime(default_end)
        end_row.addWidget(self.end_edit)
        end_row.addStretch()
        layout.addLayout(end_row)

        # 미리보기 라벨
        self.preview = QLabel("")
        self.preview.setStyleSheet("color: #4caf50; font-weight: bold; padding-top: 6px;")
        layout.addWidget(self.preview)
        self._update_preview()
        self.start_edit.timeChanged.connect(self._update_preview)
        self.end_edit.timeChanged.connect(self._update_preview)

        # 버튼
        btn_row = QHBoxLayout()
        btn_row.addStretch()
        ok_btn = QPushButton("저장")
        ok_btn.setObjectName("btn_primary")
        ok_btn.clicked.connect(self.accept)
        cancel_btn = QPushButton("취소")
        cancel_btn.clicked.connect(self.reject)
        btn_row.addWidget(ok_btn)
        btn_row.addWidget(cancel_btn)
        layout.addLayout(btn_row)

        self.setLayout(layout)
        apply_dark_titlebar(self)

    def _update_preview(self):
        s = self.start_edit.time()
        e = self.end_edit.time()
        start_dt = datetime.combine(datetime.today(), s.toPyTime())
        end_dt = datetime.combine(datetime.today(), e.toPyTime())
        if end_dt < start_dt:
            end_dt += timedelta(days=1)
        minutes = int((end_dt - start_dt).total_seconds() / 60)
        if minutes <= 0:
            self.preview.setText("⚠️ 시작이 종료보다 늦습니다")
            self.preview.setStyleSheet("color: #f44336;")
        else:
            self.preview.setText(f"총 {minutes}분")
            self.preview.setStyleSheet("color: #4caf50; font-weight: bold;")

    def get_times(self) -> tuple[str, str, int]:
        """('HH:MM:SS', 'HH:MM:SS', total_minutes) 반환."""
        s = self.start_edit.time().toPyTime()
        e = self.end_edit.time().toPyTime()
        start_str = f"{s.hour:02d}:{s.minute:02d}:00"
        end_str = f"{e.hour:02d}:{e.minute:02d}:00"
        s_dt = datetime.combine(datetime.today(), s)
        e_dt = datetime.combine(datetime.today(), e)
        if e_dt < s_dt:
            e_dt += timedelta(days=1)
        minutes = int((e_dt - s_dt).total_seconds() / 60)
        return start_str, end_str, minutes