"""Tests for AI outfit Excel service.

Pure service tests: no GUI dependency.
"""
import shutil
import sys
import tempfile
import unittest
from pathlib import Path
from unittest.mock import patch

from openpyxl import Workbook, load_workbook

sys.path.insert(0, str(Path(__file__).parent.parent / "src"))


class TestOutfitExcelService(unittest.TestCase):
    def setUp(self):
        self.tmp = Path(tempfile.mkdtemp())
        self.excel_path = self.tmp / "outfit.xlsx"
        self._write_workbook()

    def tearDown(self):
        shutil.rmtree(str(self.tmp), ignore_errors=True)

    def _write_workbook(self):
        wb = Workbook()
        ws = wb.active
        ws.append(["标题", "货号", "衣服图", "结果图", "状态", "原因"])
        ws.append(["T恤", "TY001", r"D:\img\ty001.png", "", "", ""])
        ws.append(["已完成", "TY002", r"D:\img\ty002.png", r"D:\out\ty002.jpg", "完成", ""])
        ws.append(["失败行", "TY003", r"D:\img\ty003.png", "", "失败", "旧错误"])
        ws.append(["缺路径", "TY004", "", "", "", ""])
        ws.append(["  保留空格  ", 1005, r"D:\img\ty005.png", "", "", ""])
        wb.save(str(self.excel_path))
        wb.close()

    def _read_row(self, row):
        wb = load_workbook(str(self.excel_path))
        try:
            ws = wb.active
            return (
                ws.cell(row, 4).value,
                ws.cell(row, 5).value,
                ws.cell(row, 6).value,
            )
        finally:
            wb.close()

    def test_load_tasks_skips_done_failed_and_incomplete_by_default(self):
        from services.excel_service import load_outfit_tasks

        tasks = load_outfit_tasks(self.excel_path)

        self.assertEqual([task.row_index for task in tasks], [2, 6])
        self.assertEqual(tasks[0].title, "T恤")
        self.assertEqual(tasks[0].product_id, "TY001")
        self.assertEqual(tasks[0].garment_path, r"D:\img\ty001.png")

    def test_load_tasks_includes_failed_when_retry_enabled(self):
        from services.excel_service import load_outfit_tasks

        tasks = load_outfit_tasks(self.excel_path, retry_failed=True)

        self.assertEqual([task.row_index for task in tasks], [2, 4, 6])
        self.assertEqual(tasks[1].status, "失败")

    def test_load_tasks_preserves_user_cell_text(self):
        from services.excel_service import load_outfit_tasks

        tasks = load_outfit_tasks(self.excel_path)
        task = tasks[-1]

        self.assertEqual(task.title, "  保留空格  ")
        self.assertEqual(task.product_id, "1005")

    def test_write_success_result_updates_d_e_f_and_saves(self):
        from core.models import OutfitResult, OutfitTask
        from services.excel_service import write_outfit_result

        task = OutfitTask(row_index=2, title="T恤", product_id="TY001", garment_path="g.png")
        result = OutfitResult(task=task, success=True, output_path=r"D:\out\TY001.jpg")

        write_outfit_result(self.excel_path, result)

        self.assertEqual(self._read_row(2), (r"D:\out\TY001.jpg", "完成", None))

    def test_write_failure_result_updates_e_f_and_saves(self):
        from core.models import OutfitResult, OutfitTask
        from services.excel_service import write_outfit_result

        task = OutfitTask(row_index=2, title="T恤", product_id="TY001", garment_path="g.png")
        result = OutfitResult(task=task, success=False, error="衣服图打不开")

        write_outfit_result(self.excel_path, result)

        self.assertEqual(self._read_row(2), (None, "失败", "衣服图打不开"))

    def test_check_excel_writable_true_for_existing_workbook(self):
        from services.excel_service import check_excel_writable

        self.assertTrue(check_excel_writable(self.excel_path))

    def test_ensure_excel_writable_raises_when_probe_fails(self):
        from services.excel_service import ExcelInUseError, ensure_excel_writable

        with patch("builtins.open", side_effect=OSError("locked")):
            with self.assertRaises(ExcelInUseError):
                ensure_excel_writable(self.excel_path)


if __name__ == "__main__":
    unittest.main()