"""
浏览历史管理视图
"""
from flask import Blueprint, render_template, request, redirect, url_for, flash, jsonify, session
from app.models.browse_history import BrowseHistory
from app.models.product import Product
from app.utils.decorators import login_required
from config.database import db

history_bp = Blueprint('history', __name__, url_prefix='/history')


@history_bp.route('/')
@login_required
def index():
    """浏览历史页面"""
    page = request.args.get('page', 1, type=int)
    per_page = 20

    # 获取用户浏览历史
    history = BrowseHistory.get_user_history(session['user_id'], page, per_page)
    
    # 获取浏览历史总数
    total_count = BrowseHistory.get_user_history_count(session['user_id'])

    return render_template('user/history.html', 
                         history=history, 
                         total_count=total_count)


@history_bp.route('/add', methods=['POST'])
@login_required
def add():
    """添加浏览记录"""
    try:
        data = request.get_json()
        product_id = data.get('product_id')
        
        if not product_id:
            return jsonify({'success': False, 'message': '商品ID不能为空'})

        success, message = BrowseHistory.add_history(session['user_id'], product_id)
        
        if success:
            # 获取更新后的浏览历史数量
            history_count = BrowseHistory.get_user_history_count(session['user_id'])
            return jsonify({
                'success': True, 
                'message': message,
                'history_count': history_count
            })
        else:
            return jsonify({'success': False, 'message': message})

    except Exception as e:
        return jsonify({'success': False, 'message': f'添加浏览记录失败: {str(e)}'})


@history_bp.route('/remove', methods=['POST'])
@login_required
def remove():
    """删除单个浏览记录"""
    try:
        data = request.get_json()
        product_id = data.get('product_id')
        
        if not product_id:
            return jsonify({'success': False, 'message': '商品ID不能为空'})

        success, message = BrowseHistory.remove_history_item(session['user_id'], product_id)
        
        if success:
            # 获取更新后的浏览历史数量
            history_count = BrowseHistory.get_user_history_count(session['user_id'])
            return jsonify({
                'success': True, 
                'message': message,
                'history_count': history_count
            })
        else:
            return jsonify({'success': False, 'message': message})

    except Exception as e:
        return jsonify({'success': False, 'message': f'删除浏览记录失败: {str(e)}'})


@history_bp.route('/clear', methods=['POST'])
@login_required
def clear():
    """清空浏览历史"""
    try:
        success, message = BrowseHistory.clear_user_history(session['user_id'])
        
        return jsonify({
            'success': success,
            'message': message,
            'history_count': 0 if success else BrowseHistory.get_user_history_count(session['user_id'])
        })

    except Exception as e:
        return jsonify({'success': False, 'message': f'清空浏览历史失败: {str(e)}'})


@history_bp.route('/batch-remove', methods=['POST'])
@login_required
def batch_remove():
    """批量删除浏览记录"""
    try:
        data = request.get_json()
        product_ids = data.get('product_ids', [])
        
        if not product_ids:
            return jsonify({'success': False, 'message': '请选择要删除的商品'})

        success_count = 0
        fail_count = 0
        
        for product_id in product_ids:
            success, _ = BrowseHistory.remove_history_item(session['user_id'], product_id)
            if success:
                success_count += 1
            else:
                fail_count += 1

        message = f'成功删除 {success_count} 个浏览记录'
        if fail_count > 0:
            message += f'，失败 {fail_count} 个'

        # 获取更新后的浏览历史数量
        history_count = BrowseHistory.get_user_history_count(session['user_id'])
        
        return jsonify({
            'success': True,
            'message': message,
            'history_count': history_count
        })

    except Exception as e:
        return jsonify({'success': False, 'message': f'批量操作失败: {str(e)}'})


@history_bp.route('/count')
@login_required
def count():
    """获取浏览历史数量"""
    try:
        history_count = BrowseHistory.get_user_history_count(session['user_id'])
        return jsonify({
            'success': True,
            'history_count': history_count
        })
    except Exception as e:
        return jsonify({'success': False, 'message': str(e)})