"""Lịch sử các lượt chạy của một task — R08-T11.

Mở từ menu chuột phải trên thẻ Kanban. Chỉ đọc: liệt kê từng lượt đã chạy,
kết quả và log.
"""
from __future__ import annotations

import copy
from pathlib import Path
from typing import Dict, List, Optional
from PySide6.QtCore import Qt, Signal
from PySide6.QtWidgets import (
    QAbstractItemView, QComboBox, QDialog, QDialogButtonBox, QHBoxLayout,
    QLabel, QLineEdit, QListWidget, QListWidgetItem, QMenu, QMessageBox,
    QPlainTextEdit, QPushButton, QScrollArea, QSizePolicy, QStackedWidget,
    QTabBar, QTableWidget, QTableWidgetItem, QVBoxLayout, QWidget,
)
from ...core import tasks as taskrepo
from ...core.projects import list_projects
from ...core.tasks import STATUSES, chain_error, duplicate_task, new_task
from ...core.worker import AgentWorker
from ...i18n import on_language_changed, tr
from ...state import AppContext
from ...theme import current_palette
from ...ui.calendar_view import CalendarView
from ...ui.icons import icon
from ...ui.osutil import open_path


class _RunHistoryDialog(QDialog):
    """Run history of one task as a table (newest first): time, status, error;
    double-click a row to open that run's artifact folder."""

    def __init__(self, task: dict, parent=None):
        super().__init__(parent)
        self._task = task
        self.setWindowTitle(f"{tr('schedtask.menu_history')} — {task.get('title', '')}")
        self.resize(620, 380)
        root = QVBoxLayout(self)
        hint = QLabel(tr("schedtask.hist_hint"))
        hint.setObjectName("hint")
        root.addWidget(hint)

        runs = list(reversed(task.get("runs", []) or []))
        self.table = QTableWidget(len(runs), 4)
        self.table.setHorizontalHeaderLabels([
            tr("schedtask.hist_col_time"), tr("schedtask.hist_col_status"),
            tr("schedtask.hist_col_run"), tr("schedtask.hist_col_error"),
        ])
        self.table.setEditTriggers(QAbstractItemView.NoEditTriggers)
        self.table.setSelectionBehavior(QAbstractItemView.SelectRows)
        for row, run in enumerate(runs):
            ok = run.get("status") == "success"
            cells = (
                run.get("finished_at", ""),
                str(run.get("status", "")),
                run.get("run_id", ""),
                (run.get("error") or "")[:200],
            )
            for col, text in enumerate(cells):
                item = QTableWidgetItem(str(text))
                if col == 0:
                    item.setData(Qt.UserRole, run.get("run_id", ""))
                self.table.setItem(row, col, item)
        self.table.resizeColumnsToContents()
        self.table.horizontalHeader().setStretchLastSection(True)
        self.table.itemDoubleClicked.connect(self._open_artifact)
        root.addWidget(self.table, 1)

        buttons = QDialogButtonBox(QDialogButtonBox.Close)
        buttons.rejected.connect(self.reject)
        buttons.accepted.connect(self.accept)
        root.addWidget(buttons)

    def _open_artifact(self, item: QTableWidgetItem) -> None:
        first = self.table.item(item.row(), 0)
        run_id = first.data(Qt.UserRole) if first else ""
        if not run_id:
            return
        folder = taskrepo.ARTIFACTS_DIR / self._task["task_id"] / run_id
        if folder.exists():
            open_path(str(folder))