from flask import Flask, request, redirect, url_for, render_template, session, jsonify
from db.connection import MySQLPool
from config import SECRET_KEY
from db.database_manager import DatabaseManager
from models.User import User

app = Flask(__name__, static_folder='static')
app.secret_key = SECRET_KEY  # 从配置文件设置

# 一个全局MySQLPool对象，用于管理数据库连接
mysql_pool = MySQLPool()


@app.route('/')
def index():
    # 如果用户已登录，则重定向到主页；否则，重定向到登录页面
    if 'username' in session:
        return redirect(url_for('home'))
    else:
        return render_template('login.html')


@app.route('/register', methods=['GET', 'POST'])
def register():
    if request.method == 'POST':
        data = request.get_json()
        # print(data)
        user = User(
            nickname=data.get('nickname'),
            phone_number=data.get('cellphone'),  # 确保JSON中的键和这里匹配
            password=data.get('password'),
            identity=data.get('identity'),
            status=True  # 或者根据你的逻辑设置
        )
        db_manager = DatabaseManager()
        if not db_manager.user_exists(user.phone_number):
            db_manager.insert_user(user)
            return jsonify({"success": True, "message": "注册成功"})
        else:
            return jsonify({"success": False, "message": "用户已存在"})
    else:
        return render_template('register.html')


@app.route('/login', methods=['GET', 'POST'])
def login():
    if request.method == 'GET':
        return render_template('login.html')
    else:
        phone_number = request.form['username']
        password = request.form['password']
        db_manager = DatabaseManager()

        result = db_manager.valid_login(phone_number, password)  # 获取验证结果

        # 确保用户已验证且活跃（未被禁用）
        if result['valid'] and result['status'] == 1:
            # 登录成功
            session['username'] = phone_number
            session['role'] = result['identity']  # 设置用户角色
            session['nickname'] = result['nickname']
            return jsonify(success=True, message="登录成功")
        elif not result['status']:
            # 用户被禁用的情况
            return jsonify(success=False, message="账户已被禁用")
        else:
            # 其他登录失败情况
            return jsonify(success=False, message="无效的用户名或密码")


@app.route('/forget', methods=['GET', 'POST'])
def forget_page():
    return render_template('forget.html')


@app.route('/home')
def home():
    if 'username' in session:
        return render_template('home.html')
    else:
        return redirect("login")


@app.route('/logout')
def logout():
    # 清除session中的所有信息
    session.pop('username', None)  # 从会话中移除用户
    # 返回一个响应，或者重定向到登录页面
    return redirect('/login')


@app.route('/api/menu')
def get_menu():
    db_manager = DatabaseManager()

    # 从session中获取用户角色
    if 'role' in session:
        role = session['role']
        menu_items = db_manager.get_menu(role)
        # print(menu_items)

        # 转换菜单项为期望的格式并返回
        formatted_menu_items = [
            {"name": item['menu_name'], "path": item['path']} for item in menu_items
        ]
        return jsonify(formatted_menu_items)

    # 如果没有角色信息，可能用户未登录或session过期
    return jsonify([]), 401  # 未授权状态码


@app.route('/home/profile', methods=['GET', 'POST'])
def profile():
    if request.method == 'POST':
        # 从表单获取数据
        nickname = request.form['nickname']
        avatar = request.files['avatar']

        # 处理头像和昵称更新逻辑
        # ...

        return "资料更新成功"  # 或者重定向到其他页面

    # 如果是GET请求，显示表单页面
    return render_template('profile.html')  # 确保这里渲染的是包含上面表单的HTML页面


@app.route('/course-info', methods=['GET', 'POST'])
def course_info():
    if request.method == "GET":
        return render_template('course-info.html')


@app.route('/api/get-course-info', methods=['GET'])
def get_course_info():
    db_manager = DatabaseManager()
    course_data = db_manager.get_all_courses()
    print(course_data)
    return jsonify(course_data)


@app.route('/api/get-course-type', methods=['GET'])
def get_course_type():
    db_manager = DatabaseManager()
    course_data = db_manager.get_course_type()
    # 创建存储必修和选修课程名称的字典
    course_info = {"必修": [], "选修": []}
    for course in course_data:
        if course['course_type'] == '必修':
            course_info["必修"].append(course['course_name'])
        elif course['course_type'] == '选修':
            course_info["选修"].append(course['course_name'])

    return jsonify(course_info)


@app.route('/attendance', methods=['GET', 'POST'])
def course_checkin():
    return render_template('attendance.html')


@app.route('/announcement', methods=['GET', 'POST'])
def announcement():
    return render_template('announcement.html')


@app.route('/attendance-teacher', methods=['GET', 'POST'])
def announcement_teacher():
    return render_template('attendance-teacher.html')


@app.route('/attendance-reminder', methods=['GET', 'POST'])
def attendance_reminder():
    return render_template('attendance-reminder.html')


@app.route('/course-category', methods=['GET', 'POST'])
def course_category():
    return render_template('course-category.html')


@app.route('/attendance-teacher/import-class', methods=['GET'])
def import_class():
    return render_template('import-class.html')


@app.route('/attendance-teacher/attendance', methods=['GET'])
def teacher_attendance():
    return render_template('attendance-teacher.html')


from flask import request


@app.route('/api/get-teacher-attendance-table', methods=['GET'])
def get_current_teacher_courses():
    phone_number = session.get('username')

    # 获取分页参数
    page = request.args.get('page', 1, type=int)  # 如果没有提供，默认为第一页
    limit = request.args.get('limit', 10, type=int)  # 如果没有提供，默认每页10条

    # 获取所有课程数据
    db_manager = DatabaseManager()
    all_course_data = db_manager.get_current_teacher_courses(phone_number)

    # 计算分页的起始和结束索引
    start = (page - 1) * limit
    end = start + limit

    # 获取当前页的数据
    current_page_data = all_course_data[start:end]

    # 构建响应字典
    response = {
        'msg': 'ok' if current_page_data else 'no_data',
        'count': len(all_course_data),  # 数据的总数
        'data': current_page_data  # 当前页的课程信息列表
    }

    # 将查询结果转换为JSON格式并返回
    return jsonify(response)


if __name__ == '__main__':
    app.run(debug=True)