from __future__ import annotations

import json
import os
import sys
import tempfile
import unittest
from pathlib import Path
from unittest.mock import Mock, patch


ROOT = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(ROOT / "dev_scripts"))

from new_task_archive import build_archive, safe_title  # noqa: E402
from wiki_docs import (  # noqa: E402
    Config,
    Mapping,
    WikiClient,
    WikiDocsError,
    WikiPage,
    dirty_mirror_paths,
    load_config,
    parse_mirror,
    render_mirror,
    sync_all,
    validate_mappings,
)


class MappingTests(unittest.TestCase):
    def test_rejects_path_outside_docs(self) -> None:
        with self.assertRaisesRegex(WikiDocsError, "docs/"):
            validate_mappings([{"page": "Home", "path": "README.md"}])

    def test_rejects_duplicate_page(self) -> None:
        with self.assertRaisesRegex(WikiDocsError, "重复映射"):
            validate_mappings(
                [
                    {"page": "Home", "path": "docs/README.md"},
                    {"page": "Home", "path": "docs/other.md"},
                ]
            )

    def test_normalizes_api_suffix_from_environment(self) -> None:
        with tempfile.TemporaryDirectory() as directory:
            path = Path(directory) / "wiki-docs.json"
            path.write_text(
                json.dumps(
                    {
                        "schema_version": 1,
                        "gitea_url": "http://configured.example",
                        "owner": "owner",
                        "repository": "repo",
                        "mappings": [
                            {"page": "Home", "path": "docs/README.md"}
                        ],
                    }
                ),
                encoding="utf-8",
            )
            with patch.dict(
                os.environ, {"GITEA_URL": "http://gitea.example/api/v1"}, clear=False
            ):
                config = load_config(path)
        self.assertEqual(config.gitea_url, "http://gitea.example")


class MirrorTests(unittest.TestCase):
    def setUp(self) -> None:
        self.page = WikiPage(
            title="Home",
            sub_url="Home",
            text="# 首页\n",
            revision="a" * 40,
            html_url="http://gitea.example/o/r/wiki/Home",
        )

    def test_render_includes_traceable_metadata(self) -> None:
        rendered = render_mirror(self.page)
        metadata, body = parse_mirror(rendered)
        self.assertEqual(metadata["wiki_page"], "Home")
        self.assertEqual(metadata["wiki_revision"], "a" * 40)
        self.assertTrue(metadata["synchronized_at"].endswith("Z"))
        self.assertEqual(body, "# 首页\n")

    def test_unchanged_revision_preserves_sync_time(self) -> None:
        first = render_mirror(self.page)
        second = render_mirror(self.page, first)
        self.assertEqual(first, second)

    @patch("wiki_docs.subprocess.run")
    def test_dirty_mirror_paths_are_reported(self, run) -> None:
        run.return_value.stdout = " M docs/README.md\n"
        config = Config(
            path=Path("wiki-docs.json"),
            gitea_url="http://gitea.example",
            owner="o",
            repository="r",
            mappings=(Mapping("Home", "docs/README.md"),),
        )
        self.assertEqual(dirty_mirror_paths(config), [" M docs/README.md"])

    @patch("wiki_docs.dirty_mirror_paths", return_value=[" M docs/README.md"])
    def test_sync_stops_before_reading_wiki_when_mirror_is_dirty(self, _dirty) -> None:
        config = Config(
            path=Path("wiki-docs.json"),
            gitea_url="http://gitea.example",
            owner="o",
            repository="r",
            mappings=(Mapping("Home", "docs/README.md"),),
        )
        client = Mock()
        with self.assertRaisesRegex(WikiDocsError, "未提交改动"):
            sync_all(config, client)
        client.get_page.assert_not_called()


class WikiClientTests(unittest.TestCase):
    def test_encoded_unicode_sub_url_is_not_double_encoded(self) -> None:
        config = Config(
            path=Path("wiki-docs.json"),
            gitea_url="http://gitea.example",
            owner="o",
            repository="r",
            mappings=(Mapping("中文", "docs/chinese.md"),),
        )
        client = WikiClient(config, token="")
        client.list_pages = Mock(
            return_value=[{"title": "中文", "sub_url": "%E4%B8%AD%E6%96%87.-"}]
        )
        encoded = __import__("base64").b64encode("# 中文\n".encode()).decode()
        with patch.object(
            client,
            "_request",
            return_value={
                "title": "中文",
                "content_base64": encoded,
                "last_commit": {"sha": "b" * 40},
            },
        ) as request:
            page = client.get_page("中文")
        api_path = request.call_args.args[1]
        self.assertIn("%E4%B8%AD%E6%96%87.-", api_path)
        self.assertNotIn("%25E4", api_path)
        self.assertTrue(page.html_url.endswith("/%E4%B8%AD%E6%96%87.-"))


class ArchiveTests(unittest.TestCase):
    def test_safe_title_handles_windows_characters(self) -> None:
        self.assertEqual(safe_title(' 修复:"登录" / 超时 '), "修复-登录-超时")

    def test_build_archive_replaces_known_fields(self) -> None:
        template = "# <工单号> <标题>\nYYYY-MM-DD\n<链接>\n<页面名>\n"
        result = build_archive(template, "12", "修复登录", "Task-12-login", "http://i/12")
        self.assertIn("# 12 修复登录", result)
        self.assertIn("http://i/12", result)
        self.assertIn("Task-12-login", result)
        self.assertNotIn("YYYY-MM-DD", result)


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