from __future__ import annotations

import httpx

from gitea_codex_bot.config import get_settings
from gitea_codex_bot.services.repo_config import RepoReviewConfig
from gitea_codex_bot.services.reviewer import _build_prompt, _fallback_review, prepare_review_prompt, run_review_for_pr
from gitea_codex_bot.types import ParsedCommand


def test_fallback_review_surfaces_failure_reason() -> None:
    result = _fallback_review({"diff": ""}, failure_reason="OpenAI API HTTP 401: invalid_api_key")

    assert result["verdict"] == "has_issues"
    assert result["summary"] == "OpenAI review failed. Error: OpenAI API HTTP 401: invalid_api_key"
    assert result["findings"][0]["title"] == "OpenAI review request failed"
    assert result["findings"][0]["body"] == "OpenAI API HTTP 401: invalid_api_key"


def test_run_review_for_pr_uses_openai_http_error_in_fallback(monkeypatch) -> None:
    def _fake_prepare(*_args, **_kwargs):
        return "prompt", {"diff": "TODO: tighten validation"}, RepoReviewConfig()

    def _raise_http_error(*_args, **_kwargs):
        request = httpx.Request("POST", "https://api.openai.com/v1/responses")
        response = httpx.Response(429, request=request, text='{"error":{"message":"rate_limited"}}')
        raise httpx.HTTPStatusError("rate limited", request=request, response=response)

    monkeypatch.setattr("gitea_codex_bot.services.reviewer.prepare_review_prompt", _fake_prepare)
    monkeypatch.setattr("gitea_codex_bot.services.reviewer._call_openai_review", _raise_http_error)

    settings = get_settings()
    command = ParsedCommand(name="review", raw="@codex review")
    result, _repo_cfg = run_review_for_pr(settings, object(), "acme/repo", 9, command)

    assert result["summary"].startswith("OpenAI review failed. Error: OpenAI API HTTP 429:")
    assert result["findings"][0]["title"] == "OpenAI review request failed"
    assert "rate_limited" in result["findings"][0]["body"]
    assert any(finding["title"] == "TODO marker in diff" for finding in result["findings"])


def test_build_prompt_includes_trigger_message() -> None:
    pr = type("PR", (), {"html_url": "https://gitea.example/pr/1"})()
    command = ParsedCommand(name="review", raw="@codex review security\nPlease focus auth.")
    diff_context = {"truncated": False, "changed_files": ["app.py"], "diff": "diff --git a/app.py b/app.py"}
    repo_cfg = RepoReviewConfig()

    prompt = _build_prompt(
        pr,
        command,
        diff_context,
        repo_cfg,
        changed_file_contents="",
        test_output=None,
    )

    assert "Trigger message: @codex review security\nPlease focus auth." in prompt


def test_prepare_review_prompt_applies_repo_default_mode_when_command_mode_not_explicit(monkeypatch, tmp_path) -> None:
    repo_dir = tmp_path / "repo"
    repo_dir.mkdir(parents=True, exist_ok=True)
    (repo_dir / ".codex-review.yml").write_text("review:\n  default_mode: tests\n", encoding="utf-8")

    pr = type(
        "PR",
        (),
        {
            "base_sha": "b" * 40,
            "head_sha": "a" * 40,
            "html_url": "https://gitea.example/pr/1",
        },
    )()

    monkeypatch.setattr("gitea_codex_bot.services.reviewer.checkout_pr", lambda *_args, **_kwargs: repo_dir)
    monkeypatch.setattr(
        "gitea_codex_bot.services.reviewer.collect_diff_context",
        lambda *_args, **_kwargs: {"diff": "", "changed_files": [], "truncated": False},
    )

    settings = get_settings()
    gitea = type("GiteaStub", (), {"get_pull_request": lambda *_args, **_kwargs: pr})()
    command = ParsedCommand(name="review", raw="@codex review")

    prompt, _diff, _cfg = prepare_review_prompt(settings, gitea, "acme/repo", 9, command)

    assert "Mode: tests" in prompt