"""Create a Gitea issue when CI fails. Called from CI workflows."""

import argparse
import json
import os
import urllib.request
import urllib.error


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument("--sha", required=True)
    parser.add_argument("--branch", required=True)
    parser.add_argument("--run", required=True)
    parser.add_argument("--message", required=True)
    parser.add_argument("--gitea-url", default=os.environ.get("GITEA_URL", ""),
                        help="Gitea instance URL (default: $GITEA_URL)")
    parser.add_argument("--repo", default=os.environ.get("GITEA_REPO", ""),
                        help="Repo path e.g. org/repo (default: $GITEA_REPO)")
    parser.add_argument("--api-token", default=os.environ.get("GITEA_API_TOKEN", ""))
    parser.add_argument("--workflow", default="CI", help="Workflow name (default: CI)")
    parser.add_argument("--labels", default="ci-failure",
                        help="Comma-separated labels (default: ci-failure)")
    args = parser.parse_args()

    if not args.gitea_url or not args.repo:
        parser.error("--gitea-url and --repo are required (or set GITEA_URL and GITEA_REPO)")

    sha_short = args.sha[:7]
    run_url = f"{args.gitea_url}/{args.repo}/actions/runs/{args.run}"
    labels = [l.strip() for l in args.labels.split(",") if l.strip()]

    title = f"[{args.workflow}] Failure: {args.message[:80]}"
    body = (
        f"## {args.workflow} 测试失败\n\n"
        f"- **Commit:** {sha_short}\n"
        f"- **Branch:** {args.branch}\n"
        f"- **工作流运行:** {run_url}\n\n"
        f"请检查上述链接查看失败详情。\n\n"
        f"### 下一步\n"
        f"- [ ] 分析失败原因\n"
        f"- [ ] 修复代码\n"
        f"- [ ] 提交 PR 触发 CI 重测"
    )

    payload = json.dumps({
        "title": title,
        "body": body,
        "labels": labels,
    }).encode("utf-8")

    url = f"{args.gitea_url}/api/v1/repos/{args.repo}/issues"
    req = urllib.request.Request(url, data=payload, method="POST")
    req.add_header("Authorization", f"token {args.api_token}")
    req.add_header("Content-Type", "application/json")

    try:
        with urllib.request.urlopen(req) as resp:
            data = json.loads(resp.read())
            print(f"Issue created: {data.get('html_url', data.get('url', 'unknown'))}")
    except urllib.error.HTTPError as e:
        print(f"Failed to create issue: {e.code} {e.reason}")
        print(e.read().decode())
        raise


if __name__ == "__main__":
    main()