package profile

import (
	"context"
	"crypto/md5"
	"fmt"

	"github.com/youruser/base/internal/svc"
	"github.com/youruser/base/internal/types"
	"github.com/youruser/base/model"

	"github.com/zeromicro/go-zero/core/logx"
)

type ChangePasswordLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

// 修改密码
func NewChangePasswordLogic(ctx context.Context, svcCtx *svc.ServiceContext) *ChangePasswordLogic {
	return &ChangePasswordLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *ChangePasswordLogic) ChangePassword(req *types.ChangePasswordRequest) (resp *types.Response, err error) {
	// 从上下文中获取当前用户ID
	userIdValue := l.ctx.Value("userId")
	if userIdValue == nil {
		return nil, fmt.Errorf("未获取到用户信息，请先登录")
	}
	userId, ok := userIdValue.(int64)
	if !ok {
		return nil, fmt.Errorf("用户ID格式错误")
	}

	// 查询用户
	user, err := model.FindOne(l.ctx, l.svcCtx.DB, userId)
	if err != nil {
		if err == model.ErrNotFound {
			return nil, fmt.Errorf("用户不存在")
		}
		return nil, fmt.Errorf("查询用户失败: %v", err)
	}

	// 加密旧密码
	oldEncrypted := fmt.Sprintf("%x", md5.Sum([]byte(req.OldPassword)))
	if user.Password != oldEncrypted {
		return &types.Response{
			Code:    400,
			Message: "旧密码错误",
		}, nil
	}

	// 加密新密码
	newEncrypted := fmt.Sprintf("%x", md5.Sum([]byte(req.NewPassword)))
	user.Password = newEncrypted

	// 更新数据库
	err = model.Update(l.ctx, l.svcCtx.DB, user)
	if err != nil {
		return nil, fmt.Errorf("修改密码失败: %v", err)
	}

	return &types.Response{
		Code:    200,
		Message: "修改密码成功",
		Success: true,
	}, nil
}