"""
Flask主应用
订单日报系统
"""
import os
import json
from datetime import datetime
from flask import Flask, request, jsonify, send_from_directory, render_template
from flask_cors import CORS
from apscheduler.schedulers.background import BackgroundScheduler
import pytz

from lib.db import execute_query, execute_update, execute_insert
from lib.field_mapping import get_all_fields_with_display
from lib.report_generator import generate_daily_report

# 创建Flask应用
app = Flask(__name__, 
            template_folder='templates',
            static_folder='public')
CORS(app)

# 确保public/reports目录存在
os.makedirs(os.path.join('public', 'reports'), exist_ok=True)


# ==================== 页面路由 ====================

@app.route('/')
def index():
    """主页"""
    return render_template('index.html')


# ==================== 配置管理API ====================

@app.route('/api/config', methods=['GET'])
def get_configs():
    """获取所有配置"""
    try:
        configs = execute_query(
            'SELECT * FROM t_daily_report_config ORDER BY sort_order ASC, id DESC'
        )
        
        # 解析JSON字段
        for config in configs:
            config['selected_fields'] = json.loads(config['selected_fields'])
            config['sum_fields'] = json.loads(config['sum_fields']) if config['sum_fields'] else []
        
        return jsonify({'success': True, 'data': configs})
    except Exception as e:
        return jsonify({'success': False, 'message': str(e)}), 500


@app.route('/api/config', methods=['POST'])
def create_config():
    """创建配置"""
    try:
        data = request.json
        config_name = data.get('config_name')
        split_type = data.get('split_type')
        split_value = data.get('split_value')
        split_name = data.get('split_name', '')
        selected_fields = data.get('selected_fields', [])
        sum_fields = data.get('sum_fields', [])
        
        if not config_name or not split_type or not split_value:
            return jsonify({'success': False, 'message': '缺少必填字段'}), 400
        
        if not selected_fields:
            return jsonify({'success': False, 'message': '请至少选择一个字段'}), 400
        
        # 生成ID
        config_id = int(datetime.now().timestamp() * 1000)
        
        # 获取最大排序值
        max_sort = execute_query('SELECT MAX(sort_order) as max_sort FROM t_daily_report_config')
        sort_order = (max_sort[0]['max_sort'] or 0) + 1
        
        sql = """
            INSERT INTO t_daily_report_config 
            (id, config_name, split_type, split_value, split_name, selected_fields, 
             sum_fields, is_active, sort_order, create_time, update_time)
            VALUES (%s, %s, %s, %s, %s, %s, %s, 1, %s, NOW(), NOW())
        """
        
        params = (
            config_id,
            config_name,
            split_type,
            split_value,
            split_name,
            json.dumps(selected_fields, ensure_ascii=False),
            json.dumps(sum_fields, ensure_ascii=False),
            sort_order
        )
        
        execute_insert(sql, params)
        
        return jsonify({
            'success': True,
            'message': '配置创建成功',
            'data': {'id': config_id}
        })
    except Exception as e:
        return jsonify({'success': False, 'message': str(e)}), 500


@app.route('/api/config/<int:config_id>', methods=['PUT'])
def update_config(config_id):
    """更新配置"""
    try:
        data = request.json
        config_name = data.get('config_name')
        split_type = data.get('split_type')
        split_value = data.get('split_value')
        split_name = data.get('split_name', '')
        selected_fields = data.get('selected_fields', [])
        sum_fields = data.get('sum_fields', [])
        
        sql = """
            UPDATE t_daily_report_config 
            SET config_name = %s, split_type = %s, split_value = %s, split_name = %s,
                selected_fields = %s, sum_fields = %s, update_time = NOW()
            WHERE id = %s
        """
        
        params = (
            config_name,
            split_type,
            split_value,
            split_name,
            json.dumps(selected_fields, ensure_ascii=False),
            json.dumps(sum_fields, ensure_ascii=False),
            config_id
        )
        
        execute_update(sql, params)
        
        return jsonify({'success': True, 'message': '配置更新成功'})
    except Exception as e:
        return jsonify({'success': False, 'message': str(e)}), 500


@app.route('/api/config/<int:config_id>', methods=['DELETE'])
def delete_config(config_id):
    """删除配置"""
    try:
        execute_update('DELETE FROM t_daily_report_config WHERE id = %s', (config_id,))
        return jsonify({'success': True, 'message': '配置删除成功'})
    except Exception as e:
        return jsonify({'success': False, 'message': str(e)}), 500


@app.route('/api/config/<int:config_id>/toggle', methods=['POST'])
def toggle_config(config_id):
    """启用/禁用配置"""
    try:
        execute_update(
            'UPDATE t_daily_report_config SET is_active = NOT is_active, update_time = NOW() WHERE id = %s',
            (config_id,)
        )
        return jsonify({'success': True, 'message': '操作成功'})
    except Exception as e:
        return jsonify({'success': False, 'message': str(e)}), 500


@app.route('/api/config/<int:config_id>/move', methods=['POST'])
def move_config(config_id):
    """移动配置排序"""
    try:
        direction = request.json.get('direction')  # up 或 down
        
        # 获取当前配置
        current = execute_query(
            'SELECT sort_order FROM t_daily_report_config WHERE id = %s',
            (config_id,)
        )
        if not current:
            return jsonify({'success': False, 'message': '配置不存在'}), 404
        
        current_order = current[0]['sort_order']
        
        if direction == 'up':
            # 找到上一个配置
            prev = execute_query(
                'SELECT id, sort_order FROM t_daily_report_config WHERE sort_order < %s ORDER BY sort_order DESC LIMIT 1',
                (current_order,)
            )
            if prev:
                # 交换排序
                execute_update(
                    'UPDATE t_daily_report_config SET sort_order = %s WHERE id = %s',
                    (prev[0]['sort_order'], config_id)
                )
                execute_update(
                    'UPDATE t_daily_report_config SET sort_order = %s WHERE id = %s',
                    (current_order, prev[0]['id'])
                )
        elif direction == 'down':
            # 找到下一个配置
            next_config = execute_query(
                'SELECT id, sort_order FROM t_daily_report_config WHERE sort_order > %s ORDER BY sort_order ASC LIMIT 1',
                (current_order,)
            )
            if next_config:
                # 交换排序
                execute_update(
                    'UPDATE t_daily_report_config SET sort_order = %s WHERE id = %s',
                    (next_config[0]['sort_order'], config_id)
                )
                execute_update(
                    'UPDATE t_daily_report_config SET sort_order = %s WHERE id = %s',
                    (current_order, next_config[0]['id'])
                )
        
        return jsonify({'success': True, 'message': '移动成功'})
    except Exception as e:
        return jsonify({'success': False, 'message': str(e)}), 500


# ==================== 企业和用户列表API ====================

@app.route('/api/entities', methods=['GET'])
def get_entities():
    """获取企业或用户列表"""
    try:
        entity_type = request.args.get('type', 'company')
        
        if entity_type == 'company':
            # 获取企业列表
            companies = execute_query(
                'SELECT DISTINCT company_id, company_name FROM t_company ORDER BY company_name'
            )
            return jsonify({'success': True, 'data': companies})
        else:
            # 获取用户列表
            users = execute_query(
                'SELECT DISTINCT user_id, user_name, order_type FROM t_equipment_charge_order WHERE user_id IS NOT NULL ORDER BY user_name'
            )
            return jsonify({'success': True, 'data': users})
    except Exception as e:
        return jsonify({'success': False, 'message': str(e)}), 500


# ==================== 字段列表API ====================

@app.route('/api/fields', methods=['GET'])
def get_fields():
    """获取所有可用字段"""
    try:
        fields = get_all_fields_with_display()
        return jsonify({'success': True, 'data': fields})
    except Exception as e:
        return jsonify({'success': False, 'message': str(e)}), 500


# ==================== 日报生成API ====================

@app.route('/api/report/generate', methods=['POST'])
def generate_report():
    """生成日报"""
    try:
        data = request.json
        config_id = data.get('config_id')
        
        if not config_id:
            return jsonify({'success': False, 'message': '请选择配置'}), 400
        
        # 解析时间参数
        start_time = None
        end_time = None
        
        if data.get('start_time'):
            start_time = datetime.strptime(data['start_time'], '%Y-%m-%d %H:%M:%S')
        if data.get('end_time'):
            end_time = datetime.strptime(data['end_time'], '%Y-%m-%d %H:%M:%S')
        
        result = generate_daily_report(config_id, start_time, end_time)
        
        if result['success']:
            return jsonify(result)
        else:
            return jsonify(result), 400
    except Exception as e:
        return jsonify({'success': False, 'message': str(e)}), 500


# ==================== 历史记录API ====================

@app.route('/api/report/history', methods=['GET'])
def get_report_history():
    """获取日报生成历史"""
    try:
        page = int(request.args.get('page', 1))
        page_size = int(request.args.get('page_size', 20))
        offset = (page - 1) * page_size
        
        # 查询总数
        total_result = execute_query('SELECT COUNT(*) as total FROM t_daily_report_history')
        total = total_result[0]['total']
        
        # 查询数据
        history = execute_query(
            'SELECT * FROM t_daily_report_history ORDER BY create_time DESC LIMIT %s OFFSET %s',
            (page_size, offset)
        )
        
        # 解析JSON字段并确保file_path正确
        for item in history:
            item['sum_results'] = json.loads(item['sum_results']) if item['sum_results'] else {}
            # 确保file_path是字符串
            if item['file_path'] is None:
                item['file_path'] = ''
            
            # 调试日志
            print(f"[历史记录] ID: {item['id']}, status: {item['status']}, file_path: '{item['file_path']}'")
        
        return jsonify({
            'success': True,
            'data': {
                'list': history,
                'total': total,
                'page': page,
                'page_size': page_size
            }
        })
    except Exception as e:
        print(f"[历史记录API] 错误: {e}")
        import traceback
        traceback.print_exc()
        return jsonify({'success': False, 'message': str(e)}), 500


# ==================== 数据库初始化API ====================

@app.route('/api/init-tables', methods=['POST'])
def init_tables():
    """初始化数据库表"""
    try:
        # 创建配置表
        create_config_table = """
            CREATE TABLE IF NOT EXISTS t_daily_report_config (
                id BIGINT NOT NULL COMMENT '配置ID',
                config_name VARCHAR(100) NOT NULL COMMENT '配置名称',
                split_type VARCHAR(20) NOT NULL COMMENT '拆分方式',
                split_value VARCHAR(100) NOT NULL COMMENT '拆分值',
                split_name VARCHAR(200) NULL COMMENT '拆分显示名称',
                selected_fields VARCHAR(3000) NOT NULL COMMENT '选择的字段列表',
                sum_fields VARCHAR(3000) NULL COMMENT '求和字段列表',
                is_active TINYINT NULL COMMENT '是否启用',
                sort_order INT NULL COMMENT '排序顺序',
                create_time DATETIME NULL COMMENT '创建时间',
                update_time DATETIME NULL COMMENT '更新时间'
            )
            UNIQUE KEY(id)
            DISTRIBUTED BY HASH(id) BUCKETS 1
            PROPERTIES("replication_num" = "1")
        """
        execute_update(create_config_table)
        
        # 创建历史表
        create_history_table = """
            CREATE TABLE IF NOT EXISTS t_daily_report_history (
                id BIGINT NOT NULL COMMENT '历史ID',
                report_date VARCHAR(20) NULL COMMENT '报表日期',
                start_time VARCHAR(50) NULL COMMENT '开始时间',
                end_time VARCHAR(50) NULL COMMENT '结束时间',
                split_type VARCHAR(20) NULL COMMENT '拆分方式',
                split_value VARCHAR(100) NULL COMMENT '拆分值',
                split_name VARCHAR(200) NULL COMMENT '拆分显示名称',
                config_id BIGINT NULL COMMENT '配置ID',
                total_orders INT NULL COMMENT '订单总数',
                total_amount DECIMAL(10,2) NULL COMMENT '总金额',
                sum_results VARCHAR(2000) NULL COMMENT '求和结果',
                file_path VARCHAR(500) NULL COMMENT '文件路径',
                status TINYINT NULL COMMENT '状态',
                create_time DATETIME NULL COMMENT '创建时间'
            )
            UNIQUE KEY(id)
            DISTRIBUTED BY HASH(id) BUCKETS 1
            PROPERTIES("replication_num" = "1")
        """
        execute_update(create_history_table)
        
        return jsonify({'success': True, 'message': '数据库表初始化成功'})
    except Exception as e:
        return jsonify({'success': False, 'message': str(e)}), 500


# ==================== 文件下载API ====================

@app.route('/api/download', methods=['GET'])
def download_file():
    """下载文件"""
    try:
        file_path = request.args.get('path')
        print(f"[下载] 请求路径: {file_path}")
        
        if not file_path:
            return jsonify({'success': False, 'message': '文件路径不能为空'}), 400
        
        # 安全检查：确保路径在public目录下
        if not file_path.startswith('/reports/'):
            return jsonify({'success': False, 'message': '无效的文件路径'}), 400
        
        filename = file_path.replace('/reports/', '')
        # 使用绝对路径
        reports_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'public', 'reports')
        
        print(f"[下载] 文件目录: {reports_dir}")
        print(f"[下载] 文件名: {filename}")
        print(f"[下载] 文件是否存在: {os.path.exists(os.path.join(reports_dir, filename))}")
        
        # 列出目录中的所有文件
        if os.path.exists(reports_dir):
            print(f"[下载] 目录中的文件: {os.listdir(reports_dir)}")
        
        return send_from_directory(reports_dir, filename, as_attachment=True)
    except Exception as e:
        print(f"[下载] 错误: {str(e)}")
        import traceback
        traceback.print_exc()
        return jsonify({'success': False, 'message': str(e)}), 500


# ==================== 定时任务 ====================

def scheduled_job():
    """定时任务：每天8:01自动生成日报"""
    print(f'[{datetime.now()}] 开始执行定时任务...')
    
    try:
        # 获取所有启用的配置
        configs = execute_query(
            'SELECT id, config_name FROM t_daily_report_config WHERE is_active = 1'
        )
        
        if not configs:
            print('没有启用的配置，跳过生成')
            return
        
        print(f'找到 {len(configs)} 个启用的配置')
        
        # 为每个配置生成日报
        for config in configs:
            print(f'正在生成: {config["config_name"]}')
            result = generate_daily_report(config['id'])
            
            if result['success']:
                print(f'  ✓ 成功: {result["total_orders"]} 条订单, 金额: {result["total_amount"]}')
            else:
                print(f'  ✗ 失败: {result["message"]}')
        
        print('定时任务执行完成')
    except Exception as e:
        print(f'定时任务执行失败: {e}')


# 启动定时任务
scheduler = BackgroundScheduler(timezone='Asia/Shanghai')
scheduler.add_job(scheduled_job, 'cron', hour=8, minute=1)
scheduler.start()
print('定时任务已启动：每天 08:01 执行')


# ==================== 启动应用 ====================

if __name__ == '__main__':
    # 支持沙箱环境和本地环境
    port = int(os.environ.get('DEPLOY_RUN_PORT', os.environ.get('PORT', 5000)))
    print(f'启动服务器: http://localhost:{port}')
    print(f'数据库: {os.environ.get("DB_HOST", "haoslm2.xicp.net")}:{os.environ.get("DB_PORT", "10216")}')
    app.run(host='0.0.0.0', port=port, debug=True)