480 lines
13 KiB
Go
480 lines
13 KiB
Go
package services
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import (
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"context"
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"errors"
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"quyun/v2/app/errorx"
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content_dto "quyun/v2/app/http/v1/dto"
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user_dto "quyun/v2/app/http/v1/dto"
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"quyun/v2/app/requests"
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"quyun/v2/database/models"
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"quyun/v2/pkg/consts"
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"github.com/spf13/cast"
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"gorm.io/gorm"
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)
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// @provider
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type content struct{}
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func (s *content) List(ctx context.Context, filter *content_dto.ContentListFilter) (*requests.Pager, error) {
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tbl, q := models.ContentQuery.QueryContext(ctx)
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// Filters
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q = q.Where(tbl.Status.Eq(consts.ContentStatusPublished))
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if filter.Keyword != nil && *filter.Keyword != "" {
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q = q.Where(tbl.Title.Like("%" + *filter.Keyword + "%"))
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}
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if filter.Genre != nil && *filter.Genre != "" {
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q = q.Where(tbl.Genre.Eq(*filter.Genre))
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}
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if filter.TenantID != nil && *filter.TenantID != "" {
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tid := cast.ToInt64(*filter.TenantID)
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q = q.Where(tbl.TenantID.Eq(tid))
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}
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// Sort
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sort := "latest"
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if filter.Sort != nil && *filter.Sort != "" {
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sort = *filter.Sort
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}
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switch sort {
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case "hot":
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q = q.Order(tbl.Views.Desc())
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case "price_asc":
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q = q.Order(tbl.ID.Desc())
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default: // latest
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q = q.Order(tbl.PublishedAt.Desc())
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}
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// Pagination
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filter.Pagination.Format()
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total, err := q.Count()
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if err != nil {
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return nil, errorx.ErrDatabaseError.WithCause(err)
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}
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// Use UnderlyingDB for complex preloads
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var list []*models.Content
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err = q.Offset(int(filter.Pagination.Offset())).Limit(int(filter.Pagination.Limit)).
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UnderlyingDB().
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Preload("Author").
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Preload("ContentAssets.Asset").
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Find(&list).Error
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if err != nil {
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return nil, errorx.ErrDatabaseError.WithCause(err)
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}
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// Convert to DTO
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data := make([]content_dto.ContentItem, len(list))
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for i, item := range list {
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data[i] = s.toContentItemDTO(item)
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}
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return &requests.Pager{
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Pagination: filter.Pagination,
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Total: total,
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Items: data,
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}, nil
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}
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func (s *content) Get(ctx context.Context, id string) (*content_dto.ContentDetail, error) {
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cid := cast.ToInt64(id)
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_, q := models.ContentQuery.QueryContext(ctx)
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var item models.Content
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err := q.UnderlyingDB().
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Preload("Author").
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Preload("ContentAssets", func(db *gorm.DB) *gorm.DB {
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return db.Order("sort ASC")
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}).
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Preload("ContentAssets.Asset").
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Where("id = ?", cid).
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First(&item).Error
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if err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, errorx.ErrRecordNotFound
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}
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return nil, errorx.ErrDatabaseError.WithCause(err)
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}
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// Interaction status
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isLiked := false
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isFavorited := false
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if userID := ctx.Value(consts.CtxKeyUser); userID != nil {
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uid := cast.ToInt64(userID)
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isLiked, _ = models.UserContentActionQuery.WithContext(ctx).
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Where(models.UserContentActionQuery.UserID.Eq(uid),
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models.UserContentActionQuery.ContentID.Eq(cid),
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models.UserContentActionQuery.Type.Eq("like")).
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Exists()
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isFavorited, _ = models.UserContentActionQuery.WithContext(ctx).
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Where(models.UserContentActionQuery.UserID.Eq(uid),
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models.UserContentActionQuery.ContentID.Eq(cid),
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models.UserContentActionQuery.Type.Eq("favorite")).
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Exists()
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}
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detail := &content_dto.ContentDetail{
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ContentItem: s.toContentItemDTO(&item),
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Description: item.Description,
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Body: item.Body,
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MediaUrls: s.toMediaURLs(item.ContentAssets),
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IsLiked: isLiked,
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IsFavorited: isFavorited,
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}
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return detail, nil
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}
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func (s *content) ListComments(ctx context.Context, id string, page int) (*requests.Pager, error) {
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cid := cast.ToInt64(id)
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tbl, q := models.CommentQuery.QueryContext(ctx)
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q = q.Where(tbl.ContentID.Eq(cid)).Preload(tbl.User)
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q = q.Order(tbl.CreatedAt.Desc())
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p := requests.Pagination{Page: int64(page), Limit: 10}
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total, err := q.Count()
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if err != nil {
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return nil, errorx.ErrDatabaseError.WithCause(err)
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}
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list, err := q.Offset(int(p.Offset())).Limit(int(p.Limit)).Find()
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if err != nil {
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return nil, errorx.ErrDatabaseError.WithCause(err)
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}
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// User likes
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likedMap := make(map[int64]bool)
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if userID := ctx.Value(consts.CtxKeyUser); userID != nil {
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uid := cast.ToInt64(userID)
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ids := make([]int64, len(list))
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for i, v := range list {
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ids[i] = v.ID
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}
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likes, _ := models.UserCommentActionQuery.WithContext(ctx).
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Where(models.UserCommentActionQuery.UserID.Eq(uid),
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models.UserCommentActionQuery.CommentID.In(ids...),
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models.UserCommentActionQuery.Type.Eq("like")).
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Find()
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for _, l := range likes {
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likedMap[l.CommentID] = true
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}
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}
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data := make([]content_dto.Comment, len(list))
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for i, v := range list {
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data[i] = content_dto.Comment{
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ID: cast.ToString(v.ID),
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Content: v.Content,
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UserID: cast.ToString(v.UserID),
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UserNickname: v.User.Nickname,
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UserAvatar: v.User.Avatar,
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CreateTime: v.CreatedAt.Format("2006-01-02 15:04:05"),
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Likes: int(v.Likes),
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ReplyTo: cast.ToString(v.ReplyTo),
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IsLiked: likedMap[v.ID],
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}
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}
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return &requests.Pager{
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Pagination: requests.Pagination{Page: p.Page, Limit: p.Limit},
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Total: total,
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Items: data,
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}, nil
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}
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func (s *content) CreateComment(ctx context.Context, id string, form *content_dto.CommentCreateForm) error {
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userID := ctx.Value(consts.CtxKeyUser)
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if userID == nil {
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return errorx.ErrUnauthorized
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}
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uid := cast.ToInt64(userID)
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cid := cast.ToInt64(id)
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c, err := models.ContentQuery.WithContext(ctx).Where(models.ContentQuery.ID.Eq(cid)).First()
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if err != nil {
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return errorx.ErrRecordNotFound
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}
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comment := &models.Comment{
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TenantID: c.TenantID,
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UserID: uid,
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ContentID: cid,
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Content: form.Content,
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ReplyTo: cast.ToInt64(form.ReplyTo),
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}
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if err := models.CommentQuery.WithContext(ctx).Create(comment); err != nil {
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return errorx.ErrDatabaseError.WithCause(err)
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}
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return nil
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}
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func (s *content) LikeComment(ctx context.Context, id string) error {
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userID := ctx.Value(consts.CtxKeyUser)
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if userID == nil {
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return errorx.ErrUnauthorized
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}
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uid := cast.ToInt64(userID)
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cmid := cast.ToInt64(id)
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return models.Q.Transaction(func(tx *models.Query) error {
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exists, _ := tx.UserCommentAction.WithContext(ctx).
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Where(tx.UserCommentAction.UserID.Eq(uid), tx.UserCommentAction.CommentID.Eq(cmid), tx.UserCommentAction.Type.Eq("like")).
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Exists()
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if exists {
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return nil
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}
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action := &models.UserCommentAction{UserID: uid, CommentID: cmid, Type: "like"}
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if err := tx.UserCommentAction.WithContext(ctx).Create(action); err != nil {
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return err
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}
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_, err := tx.Comment.WithContext(ctx).Where(tx.Comment.ID.Eq(cmid)).UpdateSimple(tx.Comment.Likes.Add(1))
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return err
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})
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}
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func (s *content) GetLibrary(ctx context.Context) ([]user_dto.ContentItem, error) {
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userID := ctx.Value(consts.CtxKeyUser)
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if userID == nil {
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return nil, errorx.ErrUnauthorized
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}
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uid := cast.ToInt64(userID)
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tbl, q := models.ContentAccessQuery.QueryContext(ctx)
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accessList, err := q.Where(tbl.UserID.Eq(uid), tbl.Status.Eq(consts.ContentAccessStatusActive)).Find()
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if err != nil {
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return nil, errorx.ErrDatabaseError.WithCause(err)
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}
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if len(accessList) == 0 {
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return []user_dto.ContentItem{}, nil
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}
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var contentIDs []int64
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for _, a := range accessList {
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contentIDs = append(contentIDs, a.ContentID)
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}
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ctbl, cq := models.ContentQuery.QueryContext(ctx)
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var list []*models.Content
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err = cq.Where(ctbl.ID.In(contentIDs...)).
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UnderlyingDB().
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Preload("Author").
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Preload("ContentAssets.Asset").
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Find(&list).Error
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if err != nil {
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return nil, errorx.ErrDatabaseError.WithCause(err)
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}
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var data []user_dto.ContentItem
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for _, item := range list {
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dto := s.toContentItemDTO(item)
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dto.IsPurchased = true
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data = append(data, dto)
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}
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return data, nil
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}
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func (s *content) GetFavorites(ctx context.Context) ([]user_dto.ContentItem, error) {
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return s.getInteractList(ctx, "favorite")
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}
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func (s *content) AddFavorite(ctx context.Context, contentId string) error {
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return s.addInteract(ctx, contentId, "favorite")
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}
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func (s *content) RemoveFavorite(ctx context.Context, contentId string) error {
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return s.removeInteract(ctx, contentId, "favorite")
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}
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func (s *content) GetLikes(ctx context.Context) ([]user_dto.ContentItem, error) {
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return s.getInteractList(ctx, "like")
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}
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func (s *content) AddLike(ctx context.Context, contentId string) error {
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return s.addInteract(ctx, contentId, "like")
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}
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func (s *content) RemoveLike(ctx context.Context, contentId string) error {
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return s.removeInteract(ctx, contentId, "like")
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}
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func (s *content) ListTopics(ctx context.Context) ([]content_dto.Topic, error) {
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// topics usually hardcoded or from a dedicated table
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return []content_dto.Topic{}, nil
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}
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// Helpers
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func (s *content) toContentItemDTO(item *models.Content) content_dto.ContentItem {
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dto := content_dto.ContentItem{
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ID: cast.ToString(item.ID),
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Title: item.Title,
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Genre: item.Genre,
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AuthorID: cast.ToString(item.UserID),
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Views: int(item.Views),
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Likes: int(item.Likes),
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}
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if item.Author != nil {
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dto.AuthorName = item.Author.Nickname
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dto.AuthorAvatar = item.Author.Avatar
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}
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// Determine Type and Cover from assets
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var hasVideo, hasAudio bool
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for _, asset := range item.ContentAssets {
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if asset.Asset == nil {
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continue
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}
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// Cover
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if asset.Role == consts.ContentAssetRoleCover {
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dto.Cover = "http://mock/" + asset.Asset.ObjectKey
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}
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// Type detection
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switch asset.Asset.Type {
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case consts.MediaAssetTypeVideo:
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hasVideo = true
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case consts.MediaAssetTypeAudio:
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hasAudio = true
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}
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}
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// Fallback for cover if not explicitly set as cover role (take first image or whatever)
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if dto.Cover == "" && len(item.ContentAssets) > 0 {
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for _, asset := range item.ContentAssets {
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if asset.Asset != nil && asset.Asset.Type == consts.MediaAssetTypeImage {
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dto.Cover = "http://mock/" + asset.Asset.ObjectKey
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break
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}
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}
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}
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if hasVideo {
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dto.Type = "video"
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} else if hasAudio {
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dto.Type = "audio"
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} else {
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dto.Type = "article"
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}
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return dto
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}
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func (s *content) toMediaURLs(assets []*models.ContentAsset) []content_dto.MediaURL {
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var urls []content_dto.MediaURL
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for _, ca := range assets {
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if ca.Asset != nil {
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url := "http://mock/" + ca.Asset.ObjectKey
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urls = append(urls, content_dto.MediaURL{
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Type: string(ca.Asset.Type),
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URL: url,
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})
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}
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}
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return urls
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}
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func (s *content) addInteract(ctx context.Context, contentId, typ string) error {
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userID := ctx.Value(consts.CtxKeyUser)
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if userID == nil {
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return errorx.ErrUnauthorized
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}
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uid := cast.ToInt64(userID)
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cid := cast.ToInt64(contentId)
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return models.Q.Transaction(func(tx *models.Query) error {
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exists, _ := tx.UserContentAction.WithContext(ctx).
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Where(tx.UserContentAction.UserID.Eq(uid), tx.UserContentAction.ContentID.Eq(cid), tx.UserContentAction.Type.Eq(typ)).
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Exists()
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if exists {
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return nil
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}
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action := &models.UserContentAction{UserID: uid, ContentID: cid, Type: typ}
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if err := tx.UserContentAction.WithContext(ctx).Create(action); err != nil {
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return err
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}
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if typ == "like" {
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_, err := tx.Content.WithContext(ctx).Where(tx.Content.ID.Eq(cid)).UpdateSimple(tx.Content.Likes.Add(1))
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return err
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}
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return nil
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})
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}
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func (s *content) removeInteract(ctx context.Context, contentId, typ string) error {
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userID := ctx.Value(consts.CtxKeyUser)
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if userID == nil {
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return errorx.ErrUnauthorized
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}
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uid := cast.ToInt64(userID)
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cid := cast.ToInt64(contentId)
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return models.Q.Transaction(func(tx *models.Query) error {
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res, err := tx.UserContentAction.WithContext(ctx).
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Where(tx.UserContentAction.UserID.Eq(uid), tx.UserContentAction.ContentID.Eq(cid), tx.UserContentAction.Type.Eq(typ)).
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Delete()
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if err != nil {
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return err
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}
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if res.RowsAffected == 0 {
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return nil
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}
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if typ == "like" {
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_, err := tx.Content.WithContext(ctx).Where(tx.Content.ID.Eq(cid)).UpdateSimple(tx.Content.Likes.Sub(1))
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return err
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}
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return nil
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})
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}
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func (s *content) getInteractList(ctx context.Context, typ string) ([]user_dto.ContentItem, error) {
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userID := ctx.Value(consts.CtxKeyUser)
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if userID == nil {
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return nil, errorx.ErrUnauthorized
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}
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uid := cast.ToInt64(userID)
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tbl, q := models.UserContentActionQuery.QueryContext(ctx)
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actions, err := q.Where(tbl.UserID.Eq(uid), tbl.Type.Eq(typ)).Find()
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if err != nil {
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return nil, errorx.ErrDatabaseError.WithCause(err)
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}
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if len(actions) == 0 {
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return []user_dto.ContentItem{}, nil
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}
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var contentIDs []int64
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for _, a := range actions {
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contentIDs = append(contentIDs, a.ContentID)
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}
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ctbl, cq := models.ContentQuery.QueryContext(ctx)
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var list []*models.Content
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err = cq.Where(ctbl.ID.In(contentIDs...)).
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UnderlyingDB().
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Preload("Author").
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Preload("ContentAssets.Asset").
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Find(&list).Error
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if err != nil {
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return nil, errorx.ErrDatabaseError.WithCause(err)
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}
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var data []user_dto.ContentItem
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for _, item := range list {
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data = append(data, s.toContentItemDTO(item))
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}
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return data, nil
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} |