#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import os
import logging
from typing import Dict, Tuple, Any
import json


os.environ.setdefault('FLASK_RUN_HOST', '0.0.0.0')

from flask import Flask, request, jsonify, send_from_directory
import yaml
from webhook.handler import GiteaWebhookHandler
from scanner.python_scanner import PythonScanner
from scanner.js_scanner import JavaScriptScanner
from scanner.security_scanner import SecurityScanner
from scanner.ai_reviewer import AIReviewer
from report.generator import ReportGenerator
from notify.feishu import FeishuNotifier
from gitea_client import GiteaClient
from db import PRScanDB

# 配置日志
logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
)
logger = logging.getLogger(__name__)

# 加载配置
def load_config():
    """加载配置文件"""
    config_path = os.path.join(os.path.dirname(__file__), 'config.yaml')
    with open(config_path, 'r', encoding='utf-8') as f:
        return yaml.safe_load(f)

# 全局配置
config = load_config()

# 初始化应用
app = Flask(__name__)
app.config['SECRET_KEY'] = config.get('server', {}).get('secret_key', 'dev-secret-key')

# 初始化组件
webhook_handler = GiteaWebhookHandler(config['gitea'])
python_scanner = PythonScanner(config.get('scanner', {}))
js_scanner = JavaScriptScanner(config.get('scanner', {}))
security_scanner = SecurityScanner(config.get('scanner', {}))
ai_reviewer = AIReviewer(config.get('ai', {}))
report_generator = ReportGenerator(config.get('report', {}))
feishu_notifier = FeishuNotifier(config['feishu'])
gitea_client = GiteaClient(config['gitea'])


@app.route('/')
def index():
    """健康检查接口"""
    return jsonify({
        'status': 'ok',
        'service': 'AI Code Quality Scanner',
        'version': '1.0.0'
    })


@app.route('/webhook/gitea', methods=['POST'])
def handle_gitea_webhook():
    """处理 Gitea Webhook 请求"""
    try:
        # 验证签名
        signature = request.headers.get('X-Gitea-Signature')
        if signature:
            if not webhook_handler.verify_signature(
                request.data,
                signature,
                config['gitea']['webhook_secret']
            ):
                logger.warning('Webhook 签名验证失败')
                return jsonify({'error': 'Invalid signature'}), 401

        # 解析 Webhook payload
        payload = request.json
        if not payload:
            return jsonify({'error': 'No payload'}), 400

        event_type = request.headers.get('X-Gitea-Event', 'push')
        logger.info(f'收到 Gitea Webhook 事件: {event_type}')

        # 处理 Pull Request 事件
        if event_type == 'pull_request':
            return handle_pull_request(payload)

        # 处理 Push 事件
        if event_type != 'push':
            return jsonify({'message': 'Event ignored'}), 200

        # 提取提交信息
        commits = payload.get('commits', [])
        if not commits:
            return jsonify({'message': 'No commits'}), 200

        repo = payload.get('repository', {})
        repo_name = repo.get('full_name', 'unknown')
        branch = payload.get('ref', '').replace('refs/heads/', '')
        pusher = payload.get('pusher', {}).get('name', 'unknown')

        logger.info(f'处理仓库 {repo_name} 的 {len(commits)} 个提交')

        # 处理每个提交
        for commit in commits:
            commit_id = commit.get('id', '')[:8]
            commit_message = commit.get('message', '')
            author = commit.get('author', {}).get('name', 'unknown')

            logger.info(f'扫描提交 {commit_id}: {commit_message}')

            try:
                # 获取仓库 URL
                clone_url = repo.get('clone_url')
                if not clone_url:
                    # 尝试从 web_url 构建
                    web_url = repo.get('web_url', '')
                    if web_url:
                        clone_url = web_url.replace('http://', 'http://').replace('https://', 'https://')
                        clone_url = clone_url.rstrip('/') + '.git'

                # 执行代码扫描
                scan_results = {}

                # Python 扫描
                if 'python' in config.get('scanner', {}).get('languages', []):
                    scan_results['python'] = python_scanner.scan(
                        clone_url, commit_id, branch
                    )

                # JavaScript/TypeScript 扫描
                if any(lang in config.get('scanner', {}).get('languages', [])
                       for lang in ['javascript', 'typescript']):
                    scan_results['javascript'] = js_scanner.scan(
                        clone_url, commit_id, branch
                    )

                # 安全扫描
                scan_results['security'] = security_scanner.scan(
                    clone_url, commit_id, branch
                )

                # 生成报告
                report = report_generator.generate(
                    repo_name=repo_name,
                    branch=branch,
                    commit_id=commit_id,
                    commit_message=commit_message,
                    author=author,
                    scan_results=scan_results
                )

                # 发送飞书通知
                feishu_notifier.send_report(report)

                logger.info(f'提交 {commit_id} 扫描完成')

            except Exception as e:
                logger.error(f'扫描提交 {commit_id} 失败: {str(e)}')
                # 继续处理其他提交
                continue

        return jsonify({'status': 'ok', 'message': 'Scan completed'}), 200

    except Exception as e:
        logger.error(f'处理 Webhook 失败: {str(e)}', exc_info=True)
        return jsonify({'error': str(e)}), 500


def handle_pull_request(payload: Dict[str, Any]) -> Tuple[Dict, int]:
    """
    处理 Pull Request 事件
    """
    try:
        # 解析 PR 事件
        pr_info = webhook_handler.parse_pull_request_event(payload)

        if not pr_info:
            logger.info('PR 事件不需要处理（如关闭、合并等）')
            return jsonify({'message': 'PR event ignored'}), 200

        repo_name = pr_info['repo_name']
        source_branch = pr_info['source_branch']
        source_sha = pr_info['source_sha']
        pr_number = pr_info['pr_number']
        pr_title = pr_info['pr_title']
        pr_url = pr_info['pr_url']
        target_branch = pr_info['target_branch']
        author = pr_info['author']

        logger.info(f'处理 PR #{pr_number}: {pr_title} ({source_branch} -> {target_branch})')
        logger.info(f'扫描 PR 分支: {source_branch}, commit: {source_sha}')

        try:
            # 获取仓库 URL
            repo = payload.get('repository', {})
            clone_url = repo.get('clone_url')
            if not clone_url:
                web_url = repo.get('web_url', '')
                if web_url:
                    clone_url = web_url.rstrip('/') + '.git'

            # 执行代码扫描
            scan_results = {}

            # Python 扫描
            if 'python' in config.get('scanner', {}).get('languages', []):
                scan_results['python'] = python_scanner.scan(
                    clone_url, source_sha, source_branch
                )

            # JavaScript/TypeScript 扫描
            if any(lang in config.get('scanner', {}).get('languages', [])
                   for lang in ['javascript', 'typescript']):
                scan_results['javascript'] = js_scanner.scan(
                    clone_url, source_sha, source_branch
                )

            # 安全扫描
            scan_results['security'] = security_scanner.scan(
                clone_url, source_sha, source_branch
            )

            # AI 代码审查
            if config.get('ai', {}).get('enabled', False):
                scan_results['ai'] = ai_reviewer.scan(
                    clone_url, source_sha, source_branch
                )

            # 生成报告
            commit_message = f'PR #{pr_number}: {pr_title}'
            report = report_generator.generate(
                repo_name=repo_name,
                branch=source_branch,
                commit_id=source_sha,
                commit_message=commit_message,
                author=author,
                scan_results=scan_results,
                pr_url=pr_url,
                target_branch=target_branch,
                pr_number=pr_number
            )

            # 发送飞书通知
            feishu_notifier.send_report(report)

            # 保存扫描结果到数据库
            pr_info_for_db = {
                'repo_name': repo_name,
                'pr_number': pr_number,
                'pr_title': pr_title,
                'pr_url': pr_url,
                'source_branch': source_branch,
                'target_branch': target_branch,
                'author': author
            }
            PRScanDB.save_pr_scan(pr_info_for_db, scan_results, report.get('file_path'))

            logger.info(f'PR #{pr_number} 扫描完成')

        except Exception as e:
            logger.error(f'扫描 PR #{pr_number} 失败: {str(e)}')
            return jsonify({'error': str(e)}), 500

        return jsonify({'status': 'ok', 'message': 'PR scan completed'}), 200

    except Exception as e:
        logger.error(f'处理 PR Webhook 失败: {str(e)}', exc_info=True)
        return jsonify({'error': str(e)}), 500


@app.route('/scan/manual', methods=['POST'])
def manual_scan():
    """手动触发扫描接口"""
    try:
        data = request.json
        repo_url = data.get('repo_url')
        branch = data.get('branch', 'main')
        commit_id = data.get('commit_id')

        if not repo_url:
            return jsonify({'error': 'repo_url is required'}), 400

        # 执行扫描
        scan_results = {}

        if 'python' in config.get('scanner', {}).get('languages', []):
            scan_results['python'] = python_scanner.scan(repo_url, commit_id, branch)

        if any(lang in config.get('scanner', {}).get('languages', [])
               for lang in ['javascript', 'typescript']):
            scan_results['javascript'] = js_scanner.scan(repo_url, commit_id, branch)

        scan_results['security'] = security_scanner.scan(repo_url, commit_id, branch)

        # 生成报告
        report = report_generator.generate(
            repo_name=repo_url.split('/')[-1].replace('.git', ''),
            branch=branch,
            commit_id=commit_id or 'manual',
            commit_message='Manual scan',
            author='manual',
            scan_results=scan_results
        )

        # 发送飞书通知
        feishu_notifier.send_report(report)

        return jsonify({
            'status': 'ok',
            'report': report
        }), 200

    except Exception as e:
        logger.error(f'手动扫描失败: {str(e)}')
        return jsonify({'error': str(e)}), 500


@app.route('/feishu/card_action', methods=['POST'])
def handle_feishu_card_action():
    """处理飞书卡片按钮点击事件"""
    try:
        payload = request.json
        logger.info(f'收到飞书卡片回调: {payload}')

        # 处理 URL 验证请求
        challenge = payload.get('challenge')
        if challenge:
            logger.info('处理 URL 验证请求')
            return jsonify({'challenge': challenge}), 200

        # 解析回调数据
        action_data = payload.get('action', {})
        if not action_data:
            action_data = payload.get('value', {})

        action_type = action_data.get('action')
        owner = action_data.get('owner')
        repo = action_data.get('repo')
        pr_number = action_data.get('pr_number')
        pr_url = action_data.get('pr_url')

        if not all([action_type, owner, repo, pr_number]):
            logger.error('卡片回调数据不完整')
            return jsonify({'error': 'Missing required parameters'}), 400

        logger.info(f'执行操作: {action_type}, PR: {owner}/{repo}#{pr_number}')

        # 执行对应操作
        if action_type == 'merge':
            success = gitea_client.merge_pull_request(
                owner=owner,
                repo=repo,
                pr_number=int(pr_number),
                merge_message=f'通过飞书机器人合并 PR #{pr_number}'
            )
            result_message = '✅ **已合并 PR**' if success else '❌ **合并失败**'
        elif action_type == 'close':
            success = gitea_client.close_pull_request(
                owner=owner,
                repo=repo,
                pr_number=int(pr_number)
            )
            result_message = '✅ **已关闭 PR（取消合并）**' if success else '❌ **关闭失败**'
        else:
            result_message = f'⚠️ **未知操作: {action_type}**'

        # 发送操作结果到飞书
        result_text = f"{result_message}\n\n**PR:** {owner}/{repo}#{pr_number}\n**链接:** [查看PR]({pr_url})"
        feishu_notifier.send_simple_message('PR 操作结果', result_text)

        return jsonify({'status': 'ok', 'message': result_message}), 200

    except Exception as e:
        logger.error(f'处理飞书卡片回调失败: {str(e)}', exc_info=True)
        return jsonify({'error': str(e)}), 500


@app.route('/feishu/webhook', methods=['POST'])
def handle_feishu_webhook():
    """处理飞书开放平台的验证回调"""
    try:
        payload = request.json

        # 处理验证请求
        challenge = payload.get('challenge')
        if challenge:
            return jsonify({'challenge': challenge}), 200

        # 处理消息事件
        event_type = payload.get('type')
        if event_type == 'url_verification':
            return jsonify({'challenge': payload.get('challenge')}), 200

        logger.info(f'收到飞书事件: {event_type}')
        return jsonify({'status': 'ok'}), 200

    except Exception as e:
        logger.error(f'处理飞书 Webhook 失败: {str(e)}')
        return jsonify({'error': str(e)}), 500


# ============================================
# 扫描管理平台 API
# ============================================

@app.route('/api/prs')
def api_get_prs():
    """获取所有 PR 列表"""
    try:
        state = request.args.get('state')
        prs = PRScanDB.get_all_prs(state=state)

        # 转换 scan_result 字符串为对象
        for pr in prs:
            if pr.get('scan_result') and isinstance(pr['scan_result'], str):
                try:
                    pr['scan_result'] = json.loads(pr['scan_result'])
                except:
                    pass
            if pr.get('ai_review') and isinstance(pr['ai_review'], str):
                try:
                    pr['ai_review'] = json.loads(pr['ai_review'])
                except:
                    pass

        return jsonify(prs)
    except Exception as e:
        logger.error(f'获取 PR 列表失败: {str(e)}')
        return jsonify({'error': str(e)}), 500


@app.route('/api/prs/<int:pr_id>')
def api_get_pr(pr_id):
    """获取单个 PR 详情"""
    try:
        pr = PRScanDB.get_pr_by_id(pr_id)
        if not pr:
            return jsonify({'error': 'PR not found'}), 404

        # 转换 JSON 字段
        if pr.get('scan_result') and isinstance(pr['scan_result'], str):
            try:
                pr['scan_result'] = json.loads(pr['scan_result'])
            except:
                pass
        if pr.get('ai_review') and isinstance(pr['ai_review'], str):
            try:
                pr['ai_review'] = json.loads(pr['ai_review'])
            except:
                pass

        return jsonify(pr)
    except Exception as e:
        logger.error(f'获取 PR 详情失败: {str(e)}')
        return jsonify({'error': str(e)}), 500


@app.route('/api/prs/<int:pr_id>/merge', methods=['POST'])
def api_merge_pr(pr_id):
    """合并 PR"""
    try:
        pr = PRScanDB.get_pr_by_id(pr_id)
        if not pr:
            return jsonify({'success': False, 'message': 'PR not found'}), 404

        logger.info(f"合并 PR - 数据库记录: {pr}")

        if pr['state'] != 'open':
            return jsonify({'success': False, 'message': 'PR 状态不是 open'}), 400

        # 解析仓库名
        repo_name = pr['repo_name']
        logger.info(f"仓库名称: {repo_name}")
        
        if '/' in repo_name:
            owner, repo = repo_name.split('/')
        else:
            owner = ''
            repo = repo_name
        
        logger.info(f"owner: {owner}, repo: {repo}, pr_number: {pr['pr_number']}")

        # 先检查 PR 状态
        pr_info = gitea_client.get_pull_request(owner, repo, pr['pr_number'])
        if not pr_info:
            return jsonify({'success': False, 'message': '无法获取 PR 信息，请检查仓库名称是否正确'}), 400
            
        logger.info(f"PR 信息: state={pr_info.get('state')}, mergeable={pr_info.get('mergeable')}")

        if pr_info.get('state') != 'open':
            return jsonify({'success': False, 'message': f'PR 状态是 {pr_info.get("state")}, 不是 open'}), 400

        # 调用 Gitea API 合并
        success = gitea_client.merge_pull_request(
            owner=owner,
            repo=repo,
            pr_number=pr['pr_number'],
            merge_message=f'通过管理平台合并 PR #{pr["pr_number"]}'
        )

        if success:
            # 更新数据库状态
            PRScanDB.update_pr_state(pr_id, 'merged', merged_by='admin')

            # 发送飞书通知
            result_text = f"✅ **PR 已通过管理平台合并**\n\n**PR:** {repo_name}#{pr['pr_number']}\n**标题:** {pr['pr_title']}\n**合并人:** 管理员"
            feishu_notifier.send_simple_message('PR 合并', result_text)

            return jsonify({'success': True, 'message': 'PR 已合并'})
        else:
            return jsonify({'success': False, 'message': '合并失败'}), 500

    except Exception as e:
        logger.error(f'合并 PR 失败: {str(e)}')
        return jsonify({'success': False, 'message': str(e)}), 500


@app.route('/api/prs/<int:pr_id>/close', methods=['POST'])
def api_close_pr(pr_id):
    """关闭 PR"""
    try:
        pr = PRScanDB.get_pr_by_id(pr_id)
        if not pr:
            return jsonify({'success': False, 'message': 'PR not found'}), 404

        if pr['state'] != 'open':
            return jsonify({'success': False, 'message': 'PR 状态不是 open'}), 400

        # 解析仓库名
        repo_name = pr['repo_name']
        if '/' in repo_name:
            owner, repo = repo_name.split('/')
        else:
            owner = ''
            repo = repo_name

        # 调用 Gitea API 关闭
        success = gitea_client.close_pull_request(
            owner=owner,
            repo=repo,
            pr_number=pr['pr_number']
        )

        if success:
            # 更新数据库状态
            PRScanDB.update_pr_state(pr_id, 'closed')

            # 发送飞书通知
            result_text = f"❌ **PR 已被管理平台拒绝**\n\n**PR:** {repo_name}#{pr['pr_number']}\n**标题:** {pr['pr_title']}"
            feishu_notifier.send_simple_message('PR 拒绝', result_text)

            return jsonify({'success': True, 'message': 'PR 已关闭'})
        else:
            return jsonify({'success': False, 'message': '关闭失败'}), 500

    except Exception as e:
        logger.error(f'关闭 PR 失败: {str(e)}')
        return jsonify({'success': False, 'message': str(e)}), 500


# ============================================
# 扫描管理平台页面
# ============================================

# 获取 web 目录的绝对路径
WEB_DIR = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'web')


@app.route('/dashboard')
def dashboard():
    """扫描管理平台首页"""
    return send_from_directory(WEB_DIR, 'index.html')


@app.route('/web/<path:filename>')
def serve_static(filename):
    """提供静态文件服务"""
    return send_from_directory(WEB_DIR, filename)


if __name__ == '__main__':
    # 强制监听所有网络接口
    host = "0.0.0.0"
    port = config.get('server', {}).get('port', 5000)
    debug = config.get('server', {}).get('debug', True)

    logger.info(f'启动服务: {host}:{port}')
    app.run(host=host, port=port, debug=debug)