"""
发布记录的范围、作者、分页与手工摘要保护契约。
"""

import json

import pytest

from scripts import release_notes


def make_commit(sha: str, subject: str, login: str | None = "contributor", parents: int = 1) -> dict:
    """
    构造包含 GitHub 作者及原始 Git 显示名的提交响应。
    """
    return {
        "sha": sha,
        "html_url": f"https://github.com/owner/repo/commit/{sha}",
        "parents": [{}] * parents,
        "author": {"login": login} if login else None,
        "commit": {"message": subject, "author": {"name": "Display Name"}},
    }


def test_changelog_preserves_subjects_and_distinct_commits() -> None:
    """
    不分类、翻译或按标题去重，真实账号与未关联作者分别展示。
    """
    commits = [
        make_commit("a" * 40, "fix(scope): 原始标题\n详细正文"),
        make_commit("b" * 40, "fix(scope): 原始标题", login=None),
        make_commit("c" * 40, "Merge pull request #1", parents=2),
        make_commit("d" * 40, "合并提交", parents=2),
        make_commit("e" * 40, "build(plugin-market): sync default from MoviePilot-Wiki@123"),
        make_commit("f" * 40, "ci: improve pipeline"),
    ]
    body = release_notes.changelog(commits + commits[:1])
    assert body.count("fix(scope): 原始标题") == 2
    assert "by @contributor" in body
    assert "by Display Name" in body
    assert "@Display Name" not in body
    assert "Merge" not in body and "合并提交" not in body
    assert "plugin-market" not in body
    assert "ci: improve pipeline" in body
    assert "详细正文" not in body


def test_previous_tag_excludes_current_future_and_other_major(monkeypatch) -> None:
    """
    同版本重打包仍从上一正式版计算，不受较高版本或预发布标签影响。
    """
    monkeypatch.setattr(release_notes, "command", lambda *_: "v2.9.9\nv3.1.2\nv3.1.2-1\nv3.1.3\nv3.1.4\nv3.1.3-beta.1\n")
    assert release_notes.previous_tag("v3.1.3") == "v3.1.2-1"
    assert release_notes.previous_tag("v3.1.2-2") == "v3.1.2-1"
    assert release_notes.previous_tag("v3.0.0") is None


def test_collect_commits_includes_every_page(monkeypatch) -> None:
    """
    跨页发布记录包含直接提交，比较终点使用固定 SHA 而非可移动标签。
    """
    calls = []

    def fake_command(*args):
        """
        模拟 GitHub Compare API 的多页响应。
        """
        calls.append(args)
        return json.dumps([{"commits": [make_commit("a", "first")]}, {"commits": [make_commit("b", "second")]}])

    monkeypatch.setattr(release_notes, "command", fake_command)
    commits = release_notes.collect_commits("owner/repo", "fixed-sha", "v3.1.2")
    assert [commit["sha"] for commit in commits] == ["a", "b"]
    assert calls == [("gh", "api", "--paginate", "--slurp", "repos/owner/repo/compare/v3.1.2...fixed-sha?per_page=100")]


def test_first_release_collects_entire_history(monkeypatch) -> None:
    """
    首次发布不凭空选择其它大版本，提交历史按时间正序输出。
    """
    monkeypatch.setattr(release_notes, "command", lambda *_: json.dumps([[make_commit("b", "new")], [make_commit("a", "old")]]))
    commits = release_notes.collect_commits("owner/repo", "fixed-sha", None)
    assert [commit["sha"] for commit in commits] == ["a", "b"]


@pytest.mark.parametrize("summary", ["", "- 手工功能说明\n\n### 注意事项\n\n原样保留 `代码` 与 @author", "说明\n\n## 手工子标题\n\n细节"])
def test_rebuild_preserves_manual_summary_and_refreshes_records(summary: str) -> None:
    """
    重建保留手工摘要，刷新自动章节，正文始终仅包含三个约定章节。
    """
    old = release_notes.release_body(summary, "old records", "owner/repo", "v3.1.1", "v3.1.2")
    preserved = release_notes.manual_summary(old)
    new = release_notes.release_body(preserved, "new records", "owner/repo", "v3.1.1", "v3.1.2")
    assert preserved == summary
    assert "old records" not in new
    assert "new records" in new
    assert "https://github.com/owner/repo/compare/v3.1.1...v3.1.2" in new
    assert "贡献者" not in new


def test_legacy_manual_body_is_preserved_but_generated_body_is_not_summary() -> None:
    """
    兼容旧手工公告，避免把原有自动分类记录当作本次用户摘要。
    """
    assert release_notes.manual_summary("手工公告\n- 新功能") == "手工公告\n- 新功能"
    assert release_notes.manual_summary("### ✨ 新功能\n\n- generated by @author") == ""
    assert release_notes.manual_summary("手工公告\n\n### ✨ 新功能\n- generated") == "手工公告"


@pytest.mark.parametrize("frontend", [False, True])
def test_main_emits_workflow_body_without_evaluating_commit_text(tmp_path, monkeypatch, frontend) -> None:
    """
    前端仅输出列表，后端保留手工内容；提交中的工作流分隔符不得截断正文。
    """
    environment = tmp_path / "github.env"
    monkeypatch.setenv("GITHUB_ENV", str(environment))
    monkeypatch.setenv("RELEASE_BODY", "## 本次更新内容\n\n手工公告\n\n## 完整变更记录\nold")
    monkeypatch.setattr(release_notes, "previous_tag", lambda _: "v3.1.2")
    monkeypatch.setattr(release_notes, "collect_commits", lambda *_: [make_commit("a" * 40, "fix: $() EOF")])
    args = ["release_notes.py", "--repository", "owner/repo", "--tag", "v3.1.3", "--source", "fixed-sha"]
    if frontend:
        args.append("--changelog-only")
    monkeypatch.setattr("sys.argv", args)
    release_notes.main()
    content = environment.read_text(encoding="utf-8")
    delimiter = content.splitlines()[0].split("<<")[1]
    assert content.splitlines()[-1] == delimiter
    assert "fix: $() EOF by @contributor" in content
    assert ("## 本次更新内容" in content) is not frontend
    assert ("手工公告" in content) is not frontend
    assert ("## 版本对比" in content) is not frontend