"""
处理监控 API 路由
"""
from flask import Blueprint, jsonify, request
from services.process_monitor import process_monitor, PROCESS_STEPS
from models.database import db
import logging

logger = logging.getLogger('process_monitor_api')

bp = Blueprint('process_monitor', __name__, url_prefix='/api/process')


@bp.route('/steps', methods=['GET'])
def get_step_definitions():
    """获取处理步骤定义"""
    return jsonify({
        'success': True,
        'steps': PROCESS_STEPS
    })


@bp.route('/start', methods=['POST'])
def start_process():
    """
    启动产品处理流程
    
    请求体:
    {
        "product_name": "产品名称",
        "category": "分类",
        "subcategory": "子分类"
    }
    """
    try:
        data = request.get_json()
        
        product_name = data.get('product_name')
        if not product_name:
            return jsonify({'success': False, 'error': '缺少产品名称'}), 400
        
        category = data.get('category')
        subcategory = data.get('subcategory')
        
        # 启动处理流程
        session_id = process_monitor.start_process(product_name, category, subcategory)
        
        return jsonify({
            'success': True,
            'session_id': session_id,
            'message': f'处理流程已启动: {product_name}'
        })
        
    except Exception as e:
        logger.error(f"启动处理流程失败: {e}")
        return jsonify({'success': False, 'error': str(e)}), 500


@bp.route('/<session_id>/status', methods=['GET'])
def get_process_status(session_id):
    """获取处理状态"""
    status = process_monitor.get_session_status(session_id)
    
    if not status:
        return jsonify({'success': False, 'error': '会话不存在'}), 404
    
    return jsonify({
        'success': True,
        'data': status
    })


@bp.route('/<session_id>/pause', methods=['POST'])
def pause_process(session_id):
    """暂停处理"""
    if process_monitor.pause_session(session_id):
        return jsonify({
            'success': True,
            'message': '处理已暂停'
        })
    else:
        return jsonify({'success': False, 'error': '无法暂停'}), 400


@bp.route('/<session_id>/resume', methods=['POST'])
def resume_process(session_id):
    """继续处理"""
    if process_monitor.resume_session(session_id):
        return jsonify({
            'success': True,
            'message': '处理已继续'
        })
    else:
        return jsonify({'success': False, 'error': '无法继续'}), 400


@bp.route('/<session_id>/stop', methods=['POST'])
def stop_process(session_id):
    """停止处理"""
    if process_monitor.stop_session(session_id):
        return jsonify({
            'success': True,
            'message': '处理已停止'
        })
    else:
        return jsonify({'success': False, 'error': '无法停止'}), 400


@bp.route('/active', methods=['GET'])
def get_active_processes():
    """获取活动的处理会话"""
    sessions = db.get_active_sessions()
    
    # 获取每个会话的步骤信息
    result = []
    for session in sessions:
        steps = db.get_process_steps(session['session_id'])
        result.append({
            'session': session,
            'steps': steps
        })
    
    return jsonify({
        'success': True,
        'sessions': result,
        'count': len(result)
    })


@bp.route('/recent', methods=['GET'])
def get_recent_processes():
    """获取最近的处理会话"""
    limit = request.args.get('limit', 20, type=int)
    sessions = db.get_recent_sessions(limit)
    
    return jsonify({
        'success': True,
        'sessions': sessions,
        'count': len(sessions)
    })


@bp.route('/<session_id>/steps', methods=['GET'])
def get_process_steps(session_id):
    """获取处理步骤详情"""
    steps = db.get_process_steps(session_id)
    
    # 解析JSON字段
    for step in steps:
        if step.get('step_data'):
            import json
            try:
                step['step_data'] = json.loads(step['step_data'])
            except:
                pass
        if step.get('intervention_data'):
            import json
            try:
                step['intervention_data'] = json.loads(step['intervention_data'])
            except:
                pass
    
    return jsonify({
        'success': True,
        'steps': steps
    })


@bp.route('/<session_id>/step/<int:step_num>', methods=['GET'])
def get_step_detail(session_id, step_num):
    """获取单个步骤详情"""
    step = db.get_step_detail(session_id, step_num)
    
    if not step:
        return jsonify({'success': False, 'error': '步骤不存在'}), 404
    
    return jsonify({
        'success': True,
        'step': step
    })