#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
文案库管理接口
"""

from flask import Blueprint, request, jsonify
import logging
from datetime import datetime
from auth_utils import require_auth, AuthUtils
from database_config import get_db_manager
from log_utils import log_create, log_update, log_delete, log_error, log_operation

logger = logging.getLogger(__name__)

# 创建蓝图
article_bp = Blueprint('article', __name__, url_prefix='/api/articles')

@article_bp.route('/list', methods=['GET'])
@require_auth
def get_articles_list():
    """获取文案列表"""
    try:
        current_user = AuthUtils.get_current_user()
        enterprise_id = current_user.get('enterprise_id')
        
        if not enterprise_id:
            return jsonify({
                'code': 400,
                'message': '无法获取企业ID',
                'data': None
            }), 400
        
        # 获取查询参数
        page = int(request.args.get('page', 1))
        page_size = int(request.args.get('pageSize', 20))
        keyword = request.args.get('keyword', '').strip()
        product_id = request.args.get('product_id', '').strip()
        status = request.args.get('status', '').strip()
        
        # 构建查询条件
        where_conditions = ["a.enterprise_id = %s"]
        params = [enterprise_id]
        
        if keyword:
            where_conditions.append("(a.title LIKE %s OR a.content LIKE %s OR a.topic LIKE %s)")
            keyword_pattern = f"%{keyword}%"
            params.extend([keyword_pattern, keyword_pattern, keyword_pattern])
        
        if product_id:
            where_conditions.append("a.product_id = %s")
            params.append(product_id)
        
        if status:
            where_conditions.append("a.status = %s")
            params.append(status)
        
        where_clause = " AND ".join(where_conditions)
        
        # 计算偏移量
        offset = (page - 1) * page_size
        
        db_manager = get_db_manager()
        
        # 查询总数
        count_sql = f"""
            SELECT COUNT(*) as total 
            FROM ai_articles a
            WHERE {where_clause}
        """
        count_result = db_manager.execute_query(count_sql, params)
        total = count_result[0]['total']
        
        # 查询文案列表
        sql = f"""
            SELECT a.id, a.title, a.content, a.product_id, a.prompt_workflow_id,
                   a.topic, a.status, a.created_at, a.updated_at,
                   p.name as product_name,
                   pw.prompt_workflow_name as prompt_name
            FROM ai_articles a
            LEFT JOIN ai_products p ON a.product_id = p.id
            LEFT JOIN ai_prompt_workflow pw ON a.prompt_workflow_id = pw.id
            WHERE {where_clause}
            ORDER BY a.created_at DESC
            LIMIT %s OFFSET %s
        """
        params.extend([page_size, offset])
        articles = db_manager.execute_query(sql, params)
        
        logger.info(f"获取文案列表成功，总数: {total}")
        
        return jsonify({
            'code': 200,
            'message': 'success',
            'data': {
                'total': total,
                'list': articles
            },
            'timestamp': int(datetime.now().timestamp() * 1000)
        })
        
    except Exception as e:
        logger.error(f"[获取文案列表] 处理请求时发生错误: {str(e)}", exc_info=True)
        return jsonify({
            'code': 500,
            'message': '服务器内部错误',
            'data': None
        }), 500

@article_bp.route('/generate', methods=['POST'])
@require_auth
def generate_article():
    """生成文案"""
    try:
        current_user = AuthUtils.get_current_user()
        enterprise_id = current_user.get('enterprise_id')
        
        if not enterprise_id:
            return jsonify({
                'code': 400,
                'message': '无法获取企业ID',
                'data': None
            }), 400
        
        data = request.get_json()
        if not data:
            return jsonify({
                'code': 400,
                'message': '请求参数错误',
                'data': None
            }), 400
        
        # 验证必需字段
        required_fields = ['product_id', 'prompt_workflow_id', 'topics']
        for field in required_fields:
            if not data.get(field):
                return jsonify({
                    'code': 400,
                    'message': f'缺少必需字段: {field}',
                    'data': None
                }), 400
        
        db_manager = get_db_manager()
        
        # 验证产品是否存在
        check_product_sql = "SELECT id, name FROM ai_products WHERE id = %s AND enterprise_id = %s"
        product = db_manager.execute_query(check_product_sql, (data['product_id'], enterprise_id))
        
        if not product:
            return jsonify({
                'code': 404,
                'message': '产品不存在',
                'data': None
            }), 404
        
        # 验证提示词是否存在
        check_prompt_sql = "SELECT id FROM ai_prompt_workflow WHERE id = %s AND enterprise_id = %s"
        prompt = db_manager.execute_query(check_prompt_sql, (data['prompt_workflow_id'], enterprise_id))
        
        if not prompt:
            return jsonify({
                'code': 404,
                'message': '提示词不存在',
                'data': None
            }), 404
        
        count = data.get('count', 1)
        topics = data['topics'][:count] if len(data['topics']) >= count else data['topics']
        
        generated_articles = []
        
        for topic in topics:
            # TODO: 这里应该调用AI接口生成文案内容
            # 目前使用模拟数据
            title = f"关于{product[0]['name']}的{topic}分享"
            content = f"这是一篇关于{topic}的精彩内容..."
            
            # 插入文案记录
            sql = """
                INSERT INTO ai_articles 
                (enterprise_id, product_id, prompt_workflow_id, title, content, topic, status)
                VALUES (%s, %s, %s, %s, %s, %s, %s)
            """
            article_id = db_manager.execute_insert(sql, (
                enterprise_id,
                data['product_id'],
                data['prompt_workflow_id'],
                title,
                content,
                topic,
                'draft'
            ))
            
            generated_articles.append({
                'id': article_id,
                'title': title,
                'topic': topic
            })
        
        # 更新产品和企业文案总数
        update_product_sql = "UPDATE ai_products SET articles_total = articles_total + %s WHERE id = %s"
        db_manager.execute_update(update_product_sql, (len(generated_articles), data['product_id']))
        
        update_enterprise_sql = "UPDATE ai_enterprises SET articles_total = articles_total + %s WHERE id = %s"
        db_manager.execute_update(update_enterprise_sql, (len(generated_articles), enterprise_id))
        
        # 更新提示词使用次数
        update_prompt_sql = "UPDATE ai_prompt_workflow SET usage_count = usage_count + %s WHERE id = %s"
        db_manager.execute_update(update_prompt_sql, (len(generated_articles), data['prompt_workflow_id']))
        
        logger.info(f"生成文案成功: {len(generated_articles)}篇")
        
        return jsonify({
            'code': 200,
            'message': '生成成功',
            'data': {
                'generated': len(generated_articles),
                'articles': generated_articles
            },
            'timestamp': int(datetime.now().timestamp() * 1000)
        })
        
    except Exception as e:
        logger.error(f"[生成文案] 处理请求时发生错误: {str(e)}", exc_info=True)
        return jsonify({
            'code': 500,
            'message': '服务器内部错误',
            'data': None
        }), 500

@article_bp.route('/<int:article_id>', methods=['GET'])
@require_auth
def get_article_detail(article_id):
    """获取文案详情"""
    try:
        current_user = AuthUtils.get_current_user()
        enterprise_id = current_user.get('enterprise_id')
        
        if not enterprise_id:
            return jsonify({
                'code': 400,
                'message': '无法获取企业ID',
                'data': None
            }), 400
        
        db_manager = get_db_manager()
        
        # 查询文案详情
        sql = """
            SELECT a.id, a.title, a.content, a.product_id, a.prompt_workflow_id,
                   a.topic, a.status, a.created_at, a.updated_at,
                   p.name as product_name,
                   pw.prompt_workflow_name as prompt_name
            FROM ai_articles a
            LEFT JOIN ai_products p ON a.product_id = p.id
            LEFT JOIN ai_prompt_workflow pw ON a.prompt_workflow_id = pw.id
            WHERE a.id = %s AND a.enterprise_id = %s
        """
        result = db_manager.execute_query(sql, (article_id, enterprise_id))
        
        if not result:
            return jsonify({
                'code': 404,
                'message': '文案不存在',
                'data': None
            }), 404
        
        logger.info(f"获取文案详情成功: ID {article_id}")
        
        return jsonify({
            'code': 200,
            'message': 'success',
            'data': result[0],
            'timestamp': int(datetime.now().timestamp() * 1000)
        })
        
    except Exception as e:
        logger.error(f"[获取文案详情] 处理请求时发生错误: {str(e)}", exc_info=True)
        return jsonify({
            'code': 500,
            'message': '服务器内部错误',
            'data': None
        }), 500

@article_bp.route('/<int:article_id>', methods=['DELETE'])
@require_auth
def delete_article(article_id):
    """删除文案"""
    try:
        current_user = AuthUtils.get_current_user()
        enterprise_id = current_user.get('enterprise_id')
        
        if not enterprise_id:
            return jsonify({
                'code': 400,
                'message': '无法获取企业ID',
                'data': None
            }), 400
        
        db_manager = get_db_manager()
        
        # 检查文案是否存在且属于当前企业
        check_sql = "SELECT id, product_id FROM ai_articles WHERE id = %s AND enterprise_id = %s"
        existing = db_manager.execute_query(check_sql, (article_id, enterprise_id))
        
        if not existing:
            return jsonify({
                'code': 404,
                'message': '文案不存在',
                'data': None
            }), 404
        
        product_id = existing[0]['product_id']
        
        # 删除文案
        sql = "DELETE FROM ai_articles WHERE id = %s"
        db_manager.execute_update(sql, (article_id,))
        
        # 更新产品和企业文案总数
        update_product_sql = "UPDATE ai_products SET articles_total = articles_total - 1 WHERE id = %s"
        db_manager.execute_update(update_product_sql, (product_id,))
        
        update_enterprise_sql = "UPDATE ai_enterprises SET articles_total = articles_total - 1 WHERE id = %s"
        db_manager.execute_update(update_enterprise_sql, (enterprise_id,))
        
        logger.info(f"删除文案成功: ID {article_id}")
        
        return jsonify({
            'code': 200,
            'message': '删除成功',
            'data': None,
            'timestamp': int(datetime.now().timestamp() * 1000)
        })
        
    except Exception as e:
        logger.error(f"[删除文案] 处理请求时发生错误: {str(e)}", exc_info=True)
        return jsonify({
            'code': 500,
            'message': '服务器内部错误',
            'data': None
        }), 500

@article_bp.route('/stats', methods=['GET'])
@require_auth
def get_articles_stats():
    """获取文案统计"""
    try:
        current_user = AuthUtils.get_current_user()
        enterprise_id = current_user.get('enterprise_id')
        
        if not enterprise_id:
            return jsonify({
                'code': 400,
                'message': '无法获取企业ID',
                'data': None
            }), 400
        
        db_manager = get_db_manager()
        
        sql = """
            SELECT 
                COUNT(*) as total,
                SUM(CASE WHEN status IN ('draft', 'approved') THEN 1 ELSE 0 END) as available,
                SUM(CASE WHEN status = 'published' THEN 1 ELSE 0 END) as published
            FROM ai_articles
            WHERE enterprise_id = %s
        """
        result = db_manager.execute_query(sql, (enterprise_id,))
        stats = result[0] if result else {}
        
        logger.info("获取文案统计成功")
        
        return jsonify({
            'code': 200,
            'message': 'success',
            'data': stats,
            'timestamp': int(datetime.now().timestamp() * 1000)
        })
        
    except Exception as e:
        logger.error(f"[获取文案统计] 处理请求时发生错误: {str(e)}", exc_info=True)
        return jsonify({
            'code': 500,
            'message': '服务器内部错误',
            'data': None
        }), 500