// Package service
// @Link  https://github.com/bufanyun/hotgo
// @Copyright  Copyright (c) 2023 HotGo CLI
// @Author  Yl <yl@example.com>
// @License  https://github.com/bufanyun/hotgo/blob/master/LICENSE
package service

import (
	"context"
	"hotgo/api/admin/mycourse"
	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/os/gtime"
	"github.com/gogf/gf/v2/util/gconv"
)

type sMyCourse struct{}

func init() {
	service := &sMyCourse{}
	if err := gconv.Struct(service, &MyCourse); err != nil {
		g.Log().Fatal(context.TODO(), err)
	}
}

func MyCourse() *sMyCourse {
	return &sMyCourse{}
}

// List 获取我的课程列表（模拟数据）
func (s *sMyCourse) List(ctx context.Context, userId uint64, req *mycourse.MyCourseListReq) (list []*mycourse.MyCourseListModel, totalCount int, err error) {
	// 模拟数据 - 根据截图内容
	mockData := []*mycourse.MyCourseListModel{
		{
			Id:              1,
			CourseId:        1,
			Title:           "教育心理学的起源",
			Subtitle:        "计算机二级考前直播",
			CoverImage:      "/uploads/course/cover1.jpg",
			Instructor:      "代万权",
			Subject:         "史学",
			Description:     "本课程紧跟风向，让每一位数据了解数据分析使用DeepSeek，结合办公自动化职业岗位标准，以实际工作任务为导向，强调课程内容的实用性和针对性，课程内容紧贴全国计算机等级考试，技能。",
			TotalEpisodes:   9,
			TotalLessons:    54,
			TotalDuration:   "12小时43分钟",
			StudiedDuration: "10小时20分钟",
			StudyStatus:     1,
			StudyStatusText: "学习中",
			EnrollmentTime:  gtime.New("2025-01-20 10:30:00"),
		},
		{
			Id:              2,
			CourseId:        2,
			Title:           "数据分析基础",
			Subtitle:        "Python数据分析入门",
			CoverImage:      "/uploads/course/cover2.jpg",
			Instructor:      "张老师",
			Subject:         "计算机",
			Description:     "从零开始学习Python数据分析，掌握pandas、numpy等核心库的使用方法。",
			TotalEpisodes:   8,
			TotalLessons:    32,
			TotalDuration:   "16小时",
			StudiedDuration: "16小时",
			StudyStatus:     2,
			StudyStatusText: "已完结",
			EnrollmentTime:  gtime.New("2025-01-15 09:00:00"),
		},
	}

	// 根据学习状态筛选
	if req.StudyStatus > 0 {
		var filteredData []*mycourse.MyCourseListModel
		for _, item := range mockData {
			if item.StudyStatus == req.StudyStatus {
				filteredData = append(filteredData, item)
			}
		}
		mockData = filteredData
	}

	totalCount = len(mockData)

	// 分页处理
	pageNum := req.Page
	pageSize := req.Size
	if pageNum <= 0 {
		pageNum = 1
	}
	if pageSize <= 0 {
		pageSize = 10
	}

	start := (pageNum - 1) * pageSize
	end := start + pageSize

	if start >= totalCount {
		list = []*mycourse.MyCourseListModel{}
		return
	}

	if end > totalCount {
		end = totalCount
	}

	list = mockData[start:end]
	return
}