#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
多平台视频发布服务 - 统一入口
支持平台: 抖音、小红书、视频号、快手

参考项目: matrix (https://github.com/kebenxiaoming/matrix)

使用方式:
    python app.py                    # 启动 HTTP 服务 (端口 5005)
    python app.py --port 8080        # 指定端口
    python app.py --headless false   # 显示浏览器窗口
"""

import asyncio
import os
import sys
import argparse
import traceback
from datetime import datetime
from pathlib import Path

# 确保当前目录在 Python 路径中
CURRENT_DIR = Path(__file__).parent.resolve()
if str(CURRENT_DIR) not in sys.path:
    sys.path.insert(0, str(CURRENT_DIR))

from flask import Flask, request, jsonify
from flask_cors import CORS

from platforms import get_publisher, PLATFORM_MAP
from platforms.base import PublishParams


def parse_datetime(date_str: str):
    """解析日期时间字符串"""
    if not date_str:
        return None
    
    formats = [
        "%Y-%m-%d %H:%M:%S",
        "%Y-%m-%d %H:%M",
        "%Y/%m/%d %H:%M:%S",
        "%Y/%m/%d %H:%M",
        "%Y-%m-%dT%H:%M:%S",
        "%Y-%m-%dT%H:%M:%SZ",
    ]
    
    for fmt in formats:
        try:
            return datetime.strptime(date_str, fmt)
        except ValueError:
            continue
    
    return None


def validate_video_file(video_path: str) -> bool:
    """验证视频文件是否有效"""
    if not video_path:
        return False
    
    if not os.path.exists(video_path):
        return False
    
    if not os.path.isfile(video_path):
        return False
    
    valid_extensions = ['.mp4', '.mov', '.avi', '.mkv', '.flv', '.wmv', '.webm']
    ext = os.path.splitext(video_path)[1].lower()
    if ext not in valid_extensions:
        return False
    
    if os.path.getsize(video_path) < 1024:
        return False
    
    return True

# 创建 Flask 应用
app = Flask(__name__)
CORS(app)

# 全局配置
HEADLESS_MODE = os.environ.get('HEADLESS', 'true').lower() == 'true'

# ==================== 签名相关（小红书专用） ====================

@app.route("/sign", methods=["POST"])
def sign_endpoint():
    """小红书签名接口"""
    try:
        from platforms.xiaohongshu import XiaohongshuPublisher
        
        data = request.json
        publisher = XiaohongshuPublisher(headless=True)
        result = asyncio.run(publisher.get_sign(
            data.get("uri", ""),
            data.get("data"),
            data.get("a1", ""),
            data.get("web_session", "")
        ))
        return jsonify(result)
    except Exception as e:
        traceback.print_exc()
        return jsonify({"error": str(e)}), 500


# ==================== 统一发布接口 ====================

@app.route("/publish", methods=["POST"])
def publish_video():
    """
    统一发布接口
    
    请求体:
    {
        "platform": "douyin",           # douyin | xiaohongshu | weixin | kuaishou
        "cookie": "cookie字符串或JSON",
        "title": "视频标题",
        "description": "视频描述（可选）",
        "video_path": "视频文件绝对路径",
        "cover_path": "封面图片绝对路径（可选）",
        "tags": ["话题1", "话题2"],
        "post_time": "定时发布时间（可选，格式：2024-01-20 12:00:00）",
        "location": "位置（可选，默认：重庆市）"
    }
    
    响应:
    {
        "success": true,
        "platform": "douyin",
        "video_id": "xxx",
        "video_url": "xxx",
        "message": "发布成功"
    }
    """
    try:
        data = request.json
        
        # 获取参数
        platform = data.get("platform", "").lower()
        cookie_str = data.get("cookie", "")
        title = data.get("title", "")
        description = data.get("description", "")
        video_path = data.get("video_path", "")
        cover_path = data.get("cover_path")
        tags = data.get("tags", [])
        post_time = data.get("post_time")
        location = data.get("location", "重庆市")
        
        # 调试日志
        print(f"[Publish] 收到请求: platform={platform}, title={title}, video_path={video_path}")
        
        # 参数验证
        if not platform:
            print("[Publish] 错误: 缺少 platform 参数")
            return jsonify({"success": False, "error": "缺少 platform 参数"}), 400
        if platform not in PLATFORM_MAP:
            print(f"[Publish] 错误: 不支持的平台 {platform}")
            return jsonify({
                "success": False, 
                "error": f"不支持的平台: {platform}，支持: {list(PLATFORM_MAP.keys())}"
            }), 400
        if not cookie_str:
            print("[Publish] 错误: 缺少 cookie 参数")
            return jsonify({"success": False, "error": "缺少 cookie 参数"}), 400
        if not title:
            print("[Publish] 错误: 缺少 title 参数")
            return jsonify({"success": False, "error": "缺少 title 参数"}), 400
        if not video_path:
            print("[Publish] 错误: 缺少 video_path 参数")
            return jsonify({"success": False, "error": "缺少 video_path 参数"}), 400
        
        # 视频文件验证（增加详细信息）
        if not os.path.exists(video_path):
            print(f"[Publish] 错误: 视频文件不存在: {video_path}")
            return jsonify({"success": False, "error": f"视频文件不存在: {video_path}"}), 400
        if not os.path.isfile(video_path):
            print(f"[Publish] 错误: 路径不是文件: {video_path}")
            return jsonify({"success": False, "error": f"路径不是文件: {video_path}"}), 400
        
        # 解析发布时间
        publish_date = parse_datetime(post_time) if post_time else None
        
        # 创建发布参数
        params = PublishParams(
            title=title,
            video_path=video_path,
            description=description,
            cover_path=cover_path,
            tags=tags,
            publish_date=publish_date,
            location=location
        )
        
        print("=" * 60)
        print(f"[Publish] 平台: {platform}")
        print(f"[Publish] 标题: {title}")
        print(f"[Publish] 视频: {video_path}")
        print(f"[Publish] 封面: {cover_path}")
        print(f"[Publish] 话题: {tags}")
        print(f"[Publish] 定时: {publish_date}")
        print("=" * 60)
        
        # 获取对应平台的发布器
        PublisherClass = get_publisher(platform)
        publisher = PublisherClass(headless=HEADLESS_MODE)
        
        # 执行发布
        result = asyncio.run(publisher.run(cookie_str, params))
        
        return jsonify({
            "success": result.success,
            "platform": result.platform,
            "video_id": result.video_id,
            "video_url": result.video_url,
            "message": result.message,
            "error": result.error
        })
        
    except Exception as e:
        traceback.print_exc()
        return jsonify({"success": False, "error": str(e)}), 500


# ==================== 批量发布接口 ====================

@app.route("/publish/batch", methods=["POST"])
def publish_batch():
    """
    批量发布接口 - 发布到多个平台
    
    请求体:
    {
        "platforms": ["douyin", "xiaohongshu"],
        "cookies": {
            "douyin": "cookie字符串",
            "xiaohongshu": "cookie字符串"
        },
        "title": "视频标题",
        "video_path": "视频文件绝对路径",
        ...
    }
    """
    try:
        data = request.json
        
        platforms = data.get("platforms", [])
        cookies = data.get("cookies", {})
        
        if not platforms:
            return jsonify({"success": False, "error": "缺少 platforms 参数"}), 400
        
        results = []
        
        for platform in platforms:
            platform = platform.lower()
            cookie_str = cookies.get(platform, "")
            
            if not cookie_str:
                results.append({
                    "platform": platform,
                    "success": False,
                    "error": f"缺少 {platform} 的 cookie"
                })
                continue
            
            try:
                # 创建参数
                params = PublishParams(
                    title=data.get("title", ""),
                    video_path=data.get("video_path", ""),
                    description=data.get("description", ""),
                    cover_path=data.get("cover_path"),
                    tags=data.get("tags", []),
                    publish_date=parse_datetime(data.get("post_time")),
                    location=data.get("location", "重庆市")
                )
                
                # 发布
                PublisherClass = get_publisher(platform)
                publisher = PublisherClass(headless=HEADLESS_MODE)
                result = asyncio.run(publisher.run(cookie_str, params))
                
                results.append({
                    "platform": result.platform,
                    "success": result.success,
                    "video_id": result.video_id,
                    "message": result.message,
                    "error": result.error
                })
            except Exception as e:
                results.append({
                    "platform": platform,
                    "success": False,
                    "error": str(e)
                })
        
        # 统计成功/失败数量
        success_count = sum(1 for r in results if r.get("success"))
        
        return jsonify({
            "success": success_count > 0,
            "total": len(platforms),
            "success_count": success_count,
            "fail_count": len(platforms) - success_count,
            "results": results
        })
        
    except Exception as e:
        traceback.print_exc()
        return jsonify({"success": False, "error": str(e)}), 500


# ==================== Cookie 验证接口 ====================

@app.route("/check_cookie", methods=["POST"])
def check_cookie():
    """检查 cookie 是否有效"""
    try:
        data = request.json
        platform = data.get("platform", "").lower()
        cookie_str = data.get("cookie", "")
        
        if not cookie_str:
            return jsonify({"valid": False, "error": "缺少 cookie 参数"}), 400
        
        # 目前只支持小红书的 cookie 验证
        if platform == "xiaohongshu":
            try:
                from platforms.xiaohongshu import XiaohongshuPublisher, XHS_SDK_AVAILABLE
                
                if XHS_SDK_AVAILABLE:
                    from xhs import XhsClient
                    publisher = XiaohongshuPublisher()
                    xhs_client = XhsClient(cookie_str, sign=publisher.sign_sync)
                    info = xhs_client.get_self_info()
                    
                    if info:
                        return jsonify({
                            "valid": True,
                            "user_info": {
                                "user_id": info.get("user_id"),
                                "nickname": info.get("nickname"),
                                "avatar": info.get("images")
                            }
                        })
            except Exception as e:
                return jsonify({"valid": False, "error": str(e)})
        
        # 其他平台返回格式正确但未验证
        return jsonify({
            "valid": True, 
            "message": "Cookie 格式正确，但未进行在线验证"
        })
        
    except Exception as e:
        traceback.print_exc()
        return jsonify({"valid": False, "error": str(e)})


# ==================== 获取作品列表接口 ====================

@app.route("/works", methods=["POST"])
def get_works():
    """
    获取作品列表
    
    请求体:
    {
        "platform": "douyin",           # douyin | xiaohongshu | kuaishou
        "cookie": "cookie字符串或JSON",
        "page": 0,                       # 页码（从0开始，可选，默认0）
        "page_size": 20                  # 每页数量（可选，默认20）
    }
    
    响应:
    {
        "success": true,
        "platform": "douyin",
        "works": [...],
        "total": 100,
        "has_more": true
    }
    """
    try:
        data = request.json
        
        platform = data.get("platform", "").lower()
        cookie_str = data.get("cookie", "")
        page = data.get("page", 0)
        page_size = data.get("page_size", 20)
        
        print(f"[Works] 收到请求: platform={platform}, page={page}, page_size={page_size}")
        
        if not platform:
            return jsonify({"success": False, "error": "缺少 platform 参数"}), 400
        if platform not in PLATFORM_MAP:
            return jsonify({
                "success": False,
                "error": f"不支持的平台: {platform}，支持: {list(PLATFORM_MAP.keys())}"
            }), 400
        if not cookie_str:
            return jsonify({"success": False, "error": "缺少 cookie 参数"}), 400
        
        # 获取对应平台的发布器
        PublisherClass = get_publisher(platform)
        publisher = PublisherClass(headless=HEADLESS_MODE)
        
        # 执行获取作品
        result = asyncio.run(publisher.run_get_works(cookie_str, page, page_size))
        
        return jsonify(result.to_dict())
        
    except Exception as e:
        traceback.print_exc()
        return jsonify({"success": False, "error": str(e)}), 500


# ==================== 获取评论列表接口 ====================

@app.route("/comments", methods=["POST"])
def get_comments():
    """
    获取作品评论
    
    请求体:
    {
        "platform": "douyin",           # douyin | xiaohongshu | kuaishou
        "cookie": "cookie字符串或JSON",
        "work_id": "作品ID",
        "cursor": ""                    # 分页游标（可选）
    }
    
    响应:
    {
        "success": true,
        "platform": "douyin",
        "work_id": "xxx",
        "comments": [...],
        "total": 50,
        "has_more": true,
        "cursor": "xxx"
    }
    """
    try:
        data = request.json
        
        platform = data.get("platform", "").lower()
        cookie_str = data.get("cookie", "")
        work_id = data.get("work_id", "")
        cursor = data.get("cursor", "")
        
        print(f"[Comments] 收到请求: platform={platform}, work_id={work_id}")
        
        if not platform:
            return jsonify({"success": False, "error": "缺少 platform 参数"}), 400
        if platform not in PLATFORM_MAP:
            return jsonify({
                "success": False,
                "error": f"不支持的平台: {platform}，支持: {list(PLATFORM_MAP.keys())}"
            }), 400
        if not cookie_str:
            return jsonify({"success": False, "error": "缺少 cookie 参数"}), 400
        if not work_id:
            return jsonify({"success": False, "error": "缺少 work_id 参数"}), 400
        
        # 获取对应平台的发布器
        PublisherClass = get_publisher(platform)
        publisher = PublisherClass(headless=HEADLESS_MODE)
        
        # 执行获取评论
        result = asyncio.run(publisher.run_get_comments(cookie_str, work_id, cursor))
        
        result_dict = result.to_dict()
        # 添加 cursor 到响应
        if hasattr(result, '__dict__') and 'cursor' in result.__dict__:
            result_dict['cursor'] = result.__dict__['cursor']
        
        return jsonify(result_dict)
        
    except Exception as e:
        traceback.print_exc()
        return jsonify({"success": False, "error": str(e)}), 500


# ==================== 获取所有作品评论接口 ====================

@app.route("/all_comments", methods=["POST"])
def get_all_comments():
    """
    获取所有作品的评论（一次性获取）
    
    请求体:
    {
        "platform": "douyin",           # douyin | xiaohongshu
        "cookie": "cookie字符串或JSON"
    }
    
    响应:
    {
        "success": true,
        "platform": "douyin",
        "work_comments": [
            {
                "work_id": "xxx",
                "title": "作品标题",
                "cover_url": "封面URL",
                "comments": [...]
            }
        ],
        "total": 5
    }
    """
    try:
        data = request.json
        
        platform = data.get("platform", "").lower()
        cookie_str = data.get("cookie", "")
        
        print(f"[AllComments] 收到请求: platform={platform}")
        
        if not platform:
            return jsonify({"success": False, "error": "缺少 platform 参数"}), 400
        if platform not in ['douyin', 'xiaohongshu']:
            return jsonify({
                "success": False,
                "error": f"该接口只支持 douyin 和 xiaohongshu 平台"
            }), 400
        if not cookie_str:
            return jsonify({"success": False, "error": "缺少 cookie 参数"}), 400
        
        # 获取对应平台的发布器
        PublisherClass = get_publisher(platform)
        publisher = PublisherClass(headless=HEADLESS_MODE)
        
        # 执行获取所有评论
        result = asyncio.run(publisher.get_all_comments(cookie_str))
        
        return jsonify(result)
        
    except Exception as e:
        traceback.print_exc()
        return jsonify({"success": False, "error": str(e)}), 500


# ==================== 健康检查 ====================

@app.route("/health", methods=["GET"])
def health_check():
    """健康检查"""
    # 检查 xhs SDK 是否可用
    xhs_available = False
    try:
        from platforms.xiaohongshu import XHS_SDK_AVAILABLE
        xhs_available = XHS_SDK_AVAILABLE
    except:
        pass
    
    return jsonify({
        "status": "ok",
        "xhs_sdk": xhs_available,
        "supported_platforms": list(PLATFORM_MAP.keys()),
        "headless_mode": HEADLESS_MODE
    })


@app.route("/", methods=["GET"])
def index():
    """首页"""
    return jsonify({
        "name": "多平台视频发布服务",
        "version": "1.1.0",
        "endpoints": {
            "GET /": "服务信息",
            "GET /health": "健康检查",
            "POST /publish": "发布视频",
            "POST /publish/batch": "批量发布",
            "POST /works": "获取作品列表",
            "POST /comments": "获取作品评论",
            "POST /all_comments": "获取所有作品评论",
            "POST /check_cookie": "检查 Cookie",
            "POST /sign": "小红书签名"
        },
        "supported_platforms": list(PLATFORM_MAP.keys())
    })


# ==================== 命令行启动 ====================

def main():
    parser = argparse.ArgumentParser(description='多平台视频发布服务')
    parser.add_argument('--port', type=int, default=5005, help='服务端口 (默认: 5005)')
    parser.add_argument('--host', type=str, default='0.0.0.0', help='监听地址 (默认: 0.0.0.0)')
    parser.add_argument('--headless', type=str, default='true', help='是否无头模式 (默认: true)')
    parser.add_argument('--debug', action='store_true', help='调试模式')
    
    args = parser.parse_args()
    
    global HEADLESS_MODE
    HEADLESS_MODE = args.headless.lower() == 'true'
    
    # 检查 xhs SDK
    xhs_status = "未安装"
    try:
        from platforms.xiaohongshu import XHS_SDK_AVAILABLE
        xhs_status = "已安装" if XHS_SDK_AVAILABLE else "未安装"
    except:
        pass
    
    print("=" * 60)
    print("多平台视频发布服务")
    print("=" * 60)
    print(f"XHS SDK: {xhs_status}")
    print(f"Headless 模式: {HEADLESS_MODE}")
    print(f"支持平台: {', '.join(PLATFORM_MAP.keys())}")
    print("=" * 60)
    print(f"启动服务: http://{args.host}:{args.port}")
    print("=" * 60)
    
    app.run(host=args.host, port=args.port, debug=args.debug, threaded=True)


if __name__ == '__main__':
    main()