#!/usr/bin/env python3
"""
AI-Check 主入口 — Controller 层接口参数变更检测

流程（对齐第一版需求）：
  1. Git 检出新旧代码
  2. JavaParser AST 解析 Controller 方法签名与参数
  3. 对比增 / 删 / 改 / 重命名
  4. （可选）LLM 审核参数变更结果
  5. （可选）写入日志
  6. 企业微信通知（URI + 参数变更明细）

用法:
  python .gitea/checker/main.py [--config .gitea/config.yaml] [--repo-root .] [推送人] [推送时间]
"""

import argparse
import sys
import tempfile
from pathlib import Path

import yaml

CHECKER_DIR = Path(__file__).resolve().parent
sys.path.insert(0, str(CHECKER_DIR))

from change_logger import persist_change_log
from comparator import compare_endpoints
from controller_parser import (
    endpoints_to_map,
    filter_endpoints_by_files,
    run_java_parser,
)
from git_utils import (
    get_changed_java_controller_files,
    get_controller_files_diff,
    get_current_commit,
    get_previous_commit_sha,
    prepare_worktrees,
)
from llm_reviewer import review_parameter_changes
from notifier import send_parameter_change_notification


def load_config(config_path: Path) -> dict:
    """加载 YAML 配置文件。"""
    if not config_path.exists():
        print(f"[错误] 配置文件不存在: {config_path}")
        print("请在 .gitea/config.yaml 中填写配置并提交到仓库。")
        sys.exit(1)

    with open(config_path, "r", encoding="utf-8") as f:
        return yaml.safe_load(f) or {}


def parse_endpoints_for_version(
    repo_root: Path,
    source_subdir: str,
    jar_path: Path,
    tmp_dir: Path,
    label: str,
) -> dict:
    """对指定版本源码运行 Java AST 解析，提取 Controller 接口参数。"""
    source_dir = repo_root / source_subdir
    output_json = tmp_dir / f"endpoints_{label}.json"

    print(f"[AST] 扫描 {label} 版本: {source_dir}")
    endpoints = run_java_parser(source_dir, jar_path, output_json)
    print(f"[AST] {label} 版本共 {len(endpoints)} 个 Controller 接口")
    return endpoints_to_map(endpoints)


def main() -> int:
    """主流程入口。"""
    parser = argparse.ArgumentParser(
        description="AI-Check: Controller 接口参数变更检测"
    )
    parser.add_argument("--config", default=".gitea/config.yaml", help="配置文件路径（相对仓库根目录）")
    parser.add_argument("--repo-root", default=".", help="Git 仓库根目录")
    parser.add_argument("push_user", nargs="?", default=None, help="推送人（CI 传入）")
    parser.add_argument("push_time", nargs="?", default=None, help="推送时间（CI 传入）")
    args = parser.parse_args()

    repo_root = Path(args.repo_root).resolve()
    config = load_config(repo_root / args.config)

    source_subdir = config.get("source_dir", "src/main/java")
    jar_path = repo_root / config.get(
        "java_parser_jar", ".gitea/java-parser/target/controller-parser-1.0.0.jar"
    )

    commit_info = get_current_commit()
    push_user = args.push_user or commit_info.author
    push_time = args.push_time or commit_info.commit_time

    print("Controller 接口参数变更检测")
    print("=" * 40)
    print(f"推送人: {push_user}")
    print(f"推送时间: {push_time}")
    print(f"LLM 审核: {config.get('llm', {}).get('enabled', True)}")
    print(f"记录日志: {config.get('log', {}).get('enabled', False)}")
    print("=" * 40)

    prev_sha = get_previous_commit_sha()
    if prev_sha is None:
        print("[Git] 首次提交，无可对比版本，跳过。")
        return 0

    changed_files = get_changed_java_controller_files(prev_sha, commit_info.sha)
    if not changed_files:
        print("[Git] 本次提交未变更 Controller 文件，跳过。")
        return 0

    print(f"[Git] 变更 Controller 文件 {len(changed_files)} 个:")
    for f in changed_files:
        print(f"  - {f}")

    git_diff = get_controller_files_diff(prev_sha, commit_info.sha, changed_files)
    current_dir, prev_dir, _ = prepare_worktrees(repo_root)

    reports = []
    llm_review = None

    with tempfile.TemporaryDirectory(prefix="ai-check-") as tmp:
        tmp_dir = Path(tmp)

        # 1. AST 解析 + 参数对比
        new_map = parse_endpoints_for_version(
            current_dir, source_subdir, jar_path, tmp_dir, "new"
        )
        old_map = parse_endpoints_for_version(
            prev_dir, source_subdir, jar_path, tmp_dir, "old"
        )

        new_filtered = endpoints_to_map(
            filter_endpoints_by_files(list(new_map.values()), changed_files)
        )
        old_filtered = endpoints_to_map(
            filter_endpoints_by_files(list(old_map.values()), changed_files)
        )

        reports = compare_endpoints(old_filtered, new_filtered)
        print(f"[对比] 检测到 {len(reports)} 个接口存在参数变更")

        # 2. LLM 审核接口参数变更（非代码审查）
        if reports:
            llm_review = review_parameter_changes(
                reports, config, changed_files, git_diff
            )
            if llm_review:
                print(f"[LLM] 参数变更审核完成")

    # 3. 写日志（开关控制）
    persist_change_log(reports, commit_info, config, llm_review)

    # 4. 企微通知
    notify_cfg = config.get("notify", {})
    only_on_change = notify_cfg.get("only_on_change", True)

    if only_on_change and not reports:
        print("[通知] 无接口参数变更，跳过企微通知。")
        return 0

    mentioned = notify_cfg.get("mentioned_users", "")
    mentioned_list = [u.strip() for u in mentioned.split(",") if u.strip()] or None

    wecom_cfg = config.get("wecom", {})
    send_parameter_change_notification(
        webhook_url=wecom_cfg.get("webhook_url", ""),
        reports=reports,
        push_user=push_user,
        push_time=push_time,
        llm_review=llm_review,
        mentioned_users=mentioned_list,
    )

    print("\n完成")
    return 0


if __name__ == "__main__":
    sys.exit(main())