# -*- coding: utf-8 -*-
"""
지오영 도매상 API - Flask Blueprint

핵심 로직은 wholesale 패키지에서 가져옴
이 파일은 Flask 웹 API 연동만 담당
"""

import re
import time
import logging

from flask import Blueprint, jsonify, request

# wholesale 패키지 경로 설정
import wholesale_path

# wholesale 패키지에서 핵심 클래스 가져오기
from wholesale import GeoYoungSession

logger = logging.getLogger(__name__)

# Blueprint 생성
geoyoung_bp = Blueprint('geoyoung', __name__, url_prefix='/api/geoyoung')


# ========== 세션 관리 ==========

_geo_session = None

def get_geo_session():
    global _geo_session
    if _geo_session is None:
        _geo_session = GeoYoungSession()
    return _geo_session


def search_geoyoung_stock(keyword: str):
    """지오영 재고 검색 (동기, 빠름)"""
    try:
        session = get_geo_session()
        products = session.search_stock(keyword)
        
        return {
            'success': True,
            'keyword': keyword,
            'count': len(products),
            'items': products
        }
        
    except Exception as e:
        logger.error(f"지오영 검색 오류: {e}")
        return {'success': False, 'error': 'SEARCH_ERROR', 'message': str(e)}


# ========== Flask API Routes ==========

@geoyoung_bp.route('/stock', methods=['GET'])
def api_geoyoung_stock():
    """
    지오영 재고 조회 API (빠름)
    
    GET /api/geoyoung/stock?kd_code=670400830
    GET /api/geoyoung/stock?keyword=레바미피드
    """
    kd_code = request.args.get('kd_code', '').strip()
    keyword = request.args.get('keyword', '').strip()
    
    search_term = kd_code or keyword
    
    if not search_term:
        return jsonify({
            'success': False,
            'error': 'MISSING_PARAM',
            'message': 'kd_code 또는 keyword 파라미터가 필요합니다'
        }), 400
    
    try:
        result = search_geoyoung_stock(search_term)
        return jsonify(result)
    except Exception as e:
        logger.error(f"지오영 API 오류: {e}")
        return jsonify({
            'success': False,
            'error': 'API_ERROR',
            'message': str(e)
        }), 500


@geoyoung_bp.route('/stock-by-name', methods=['GET'])
def api_geoyoung_stock_by_name():
    """
    제품명에서 성분명 추출 후 지오영 검색
    
    GET /api/geoyoung/stock-by-name?product_name=휴니즈레바미피드정_(0.1g/1정)
    """
    product_name = request.args.get('product_name', '').strip()
    
    if not product_name:
        return jsonify({
            'success': False,
            'error': 'MISSING_PARAM',
            'message': 'product_name 파라미터가 필요합니다'
        }), 400
    
    # 성분명 추출
    prefixes = ['휴니즈', '휴온스', '대웅', '한미', '종근당', '유한', '녹십자', '동아', '일동', '광동', 
                '삼성', '안국', '보령', '광동', '경동', '현대', '일양', '태극', '환인', '에스케이']
    ingredient = product_name
    
    for prefix in prefixes:
        if ingredient.startswith(prefix):
            ingredient = ingredient[len(prefix):]
            break
    
    match = re.match(r'^([가-힣a-zA-Z]+)', ingredient)
    if match:
        ingredient = match.group(1)
        if ingredient.endswith('정'):
            ingredient = ingredient[:-1]
        elif ingredient.endswith('캡슐'):
            ingredient = ingredient[:-2]
    
    if not ingredient:
        ingredient = product_name[:10]
    
    try:
        result = search_geoyoung_stock(ingredient)
        result['extracted_ingredient'] = ingredient
        result['original_product_name'] = product_name
        return jsonify(result)
    except Exception as e:
        logger.error(f"지오영 API 오류: {e}")
        return jsonify({
            'success': False,
            'error': 'API_ERROR',
            'message': str(e)
        }), 500


@geoyoung_bp.route('/session-status', methods=['GET'])
def api_session_status():
    """세션 상태 확인"""
    session = get_geo_session()
    return jsonify({
        'logged_in': session._logged_in,
        'last_login': session._last_login,
        'session_age_sec': int(time.time() - session._last_login) if session._last_login else None
    })


@geoyoung_bp.route('/cart', methods=['GET'])
def api_geoyoung_cart():
    """장바구니 조회 API"""
    try:
        session = get_geo_session()
        result = session.get_cart()
        return jsonify(result)
    except Exception as e:
        return jsonify({'success': False, 'error': str(e), 'items': []}), 500


@geoyoung_bp.route('/cart/clear', methods=['POST'])
def api_geoyoung_cart_clear():
    """장바구니 비우기 API"""
    try:
        session = get_geo_session()
        result = session.clear_cart()
        return jsonify(result)
    except Exception as e:
        return jsonify({'success': False, 'error': str(e)}), 500


@geoyoung_bp.route('/cart/cancel', methods=['POST'])
def api_geoyoung_cart_cancel():
    """
    장바구니 개별 항목 삭제 API (Hard delete)
    
    POST /api/geoyoung/cart/cancel
    {
        "row_index": 0,        // 또는
        "product_code": "008709"
    }
    
    ⚠️ 지오영은 완전 삭제됨 (복원 불가, 다시 추가해야 함)
    """
    data = request.get_json() or {}
    row_index = data.get('row_index')
    product_code = data.get('product_code')
    
    if row_index is None and not product_code:
        return jsonify({
            'success': False,
            'error': 'MISSING_PARAM',
            'message': 'row_index 또는 product_code 필요'
        }), 400
    
    try:
        session = get_geo_session()
        result = session.cancel_item(row_index=row_index, product_code=product_code)
        return jsonify(result)
    except Exception as e:
        return jsonify({'success': False, 'error': str(e)}), 500


@geoyoung_bp.route('/cart/restore', methods=['POST'])
def api_geoyoung_cart_restore():
    """
    삭제된 항목 복원 API - 지오영은 Hard delete이므로 지원 안 함
    
    Returns:
        항상 {'success': False, 'error': 'NOT_SUPPORTED'}
    """
    return jsonify({
        'success': False,
        'error': 'NOT_SUPPORTED',
        'message': '지오영은 삭제 후 복원 불가 (다시 추가 필요)'
    }), 400


@geoyoung_bp.route('/confirm', methods=['POST'])
def api_geoyoung_confirm():
    """주문 확정 API"""
    data = request.get_json() or {}
    memo = data.get('memo', '')
    
    try:
        session = get_geo_session()
        result = session.submit_order(memo)
        return jsonify(result)
    except Exception as e:
        return jsonify({'success': False, 'error': str(e)}), 500


@geoyoung_bp.route('/full-order', methods=['POST'])
def api_geoyoung_full_order():
    """전체 주문 API (검색 → 장바구니 → 확정)"""
    data = request.get_json()
    
    if not data or not data.get('kd_code'):
        return jsonify({'success': False, 'error': 'kd_code required'}), 400
    
    try:
        session = get_geo_session()
        result = session.full_order(
            kd_code=data['kd_code'],
            quantity=data.get('quantity', 1),
            specification=data.get('specification'),
            check_stock=data.get('check_stock', True),
            auto_confirm=data.get('auto_confirm', True),
            memo=data.get('memo', '')
        )
        return jsonify(result)
    except Exception as e:
        return jsonify({'success': False, 'error': str(e)}), 500


@geoyoung_bp.route('/order', methods=['POST'])
def api_geoyoung_order():
    """지오영 주문 API (장바구니 추가)"""
    data = request.get_json()
    
    if not data:
        return jsonify({'success': False, 'error': 'NO_DATA'}), 400
    
    kd_code = data.get('kd_code', '').strip()
    quantity = data.get('quantity', 1)
    specification = data.get('specification')
    check_stock = data.get('check_stock', True)
    
    if not kd_code:
        return jsonify({
            'success': False,
            'error': 'MISSING_PARAM',
            'message': 'kd_code가 필요합니다'
        }), 400
    
    try:
        session = get_geo_session()
        result = session.quick_order(
            kd_code=kd_code,
            quantity=quantity,
            spec=specification,
            check_stock=check_stock
        )
        return jsonify(result)
    except Exception as e:
        logger.error(f"지오영 주문 오류: {e}")
        return jsonify({
            'success': False,
            'error': 'ORDER_ERROR',
            'message': str(e)
        }), 500


@geoyoung_bp.route('/order-batch', methods=['POST'])
def api_geoyoung_order_batch():
    """지오영 일괄 주문 API"""
    data = request.get_json()
    
    if not data or not data.get('items'):
        return jsonify({'success': False, 'error': 'NO_ITEMS'}), 400
    
    items = data.get('items', [])
    check_stock = data.get('check_stock', True)
    
    session = get_geo_session()
    results = []
    success_count = 0
    failed_count = 0
    
    for item in items:
        kd_code = item.get('kd_code', '').strip()
        quantity = item.get('quantity', 1)
        specification = item.get('specification')
        
        if not kd_code:
            results.append({
                'kd_code': kd_code,
                'success': False,
                'error': 'MISSING_KD_CODE'
            })
            failed_count += 1
            continue
        
        try:
            result = session.quick_order(
                kd_code=kd_code,
                quantity=quantity,
                spec=specification,
                check_stock=check_stock
            )
            result['kd_code'] = kd_code
            result['requested_qty'] = quantity
            results.append(result)
            
            if result.get('success'):
                success_count += 1
            else:
                failed_count += 1
                
        except Exception as e:
            results.append({
                'kd_code': kd_code,
                'success': False,
                'error': 'EXCEPTION',
                'message': str(e)
            })
            failed_count += 1
    
    return jsonify({
        'success': True,
        'total': len(items),
        'success_count': success_count,
        'failed_count': failed_count,
        'results': results
    })


# ========== 하위 호환성 ==========

# 기존 코드에서 직접 클래스 참조하는 경우를 위해
GeoyoungSession = GeoYoungSession