87 lines
3.0 KiB
Go
87 lines
3.0 KiB
Go
package learning
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import (
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"context"
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"github.com/flipped-aurora/gin-vue-admin/server/global"
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"github.com/flipped-aurora/gin-vue-admin/server/model/learning"
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learningReq "github.com/flipped-aurora/gin-vue-admin/server/model/learning/request"
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)
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type CourseService struct{}
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// CreateCourse 创建课程
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func (courseService *CourseService) CreateCourse(ctx context.Context, course *learning.Course) (err error) {
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err = global.GVA_DB.WithContext(ctx).Create(course).Error
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return err
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}
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// DeleteCourse 删除课程
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func (courseService *CourseService) DeleteCourse(ctx context.Context, ID string) (err error) {
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err = global.GVA_DB.WithContext(ctx).Delete(&learning.Course{}, ID).Error
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return err
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}
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// DeleteCourseByIds 批量删除课程
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func (courseService *CourseService) DeleteCourseByIds(ctx context.Context, IDs []string) (err error) {
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err = global.GVA_DB.WithContext(ctx).Delete(&[]learning.Course{}, "id in ?", IDs).Error
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return err
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}
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// UpdateCourse 更新课程
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func (courseService *CourseService) UpdateCourse(ctx context.Context, course learning.Course) (err error) {
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err = global.GVA_DB.WithContext(ctx).Model(&learning.Course{}).Where("id = ?", course.ID).Updates(&course).Error
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return err
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}
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// GetCourse 根据ID获取课程
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func (courseService *CourseService) GetCourse(ctx context.Context, ID string) (course learning.Course, err error) {
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err = global.GVA_DB.WithContext(ctx).Where("id = ?", ID).First(&course).Error
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return
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}
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// GetCourseInfoList 分页获取课程列表
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func (courseService *CourseService) GetCourseInfoList(ctx context.Context, info learningReq.CourseSearch) (list []learning.Course, total int64, err error) {
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limit := info.PageSize
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offset := info.PageSize * (info.Page - 1)
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// 创建db
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db := global.GVA_DB.WithContext(ctx).Model(&learning.Course{})
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var courses []learning.Course
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// 如果有条件搜索 下方会自动创建搜索语句
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if info.StartCreatedAt != nil && info.EndCreatedAt != nil {
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db = db.Where("created_at BETWEEN ? AND ?", info.StartCreatedAt, info.EndCreatedAt)
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}
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if info.Title != "" {
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db = db.Where("title LIKE ?", "%"+info.Title+"%")
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}
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if info.Status != "" {
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db = db.Where("status = ?", info.Status)
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}
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if info.Difficulty != "" {
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db = db.Where("difficulty = ?", info.Difficulty)
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}
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err = db.Count(&total).Error
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if err != nil {
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return
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}
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if limit != 0 {
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db = db.Limit(limit).Offset(offset)
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}
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err = db.Order("sort desc, created_at desc").Find(&courses).Error
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return courses, total, err
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}
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// GetPublishedCourses 获取已发布的课程列表（供学员选择）
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func (courseService *CourseService) GetPublishedCourses(ctx context.Context) (list []learning.Course, err error) {
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err = global.GVA_DB.WithContext(ctx).Where("status = ?", "published").Order("sort desc, created_at desc").Find(&list).Error
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return
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}
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// UpdateCourseStatus 更新课程状态
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func (courseService *CourseService) UpdateCourseStatus(ctx context.Context, ID string, status string) (err error) {
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err = global.GVA_DB.WithContext(ctx).Model(&learning.Course{}).Where("id = ?", ID).Update("status", status).Error
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return err
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}
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