106 lines
3.1 KiB
Go
106 lines
3.1 KiB
Go
package useCases
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import (
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"RenewCMS/internal/domain/article"
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"RenewCMS/internal/domain/audit"
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"RenewCMS/internal/domain/author"
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"RenewCMS/internal/domain/site"
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"context"
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"errors"
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)
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type CreateArticleUseCase struct {
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articleRepository article.Repository
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bodyRenderer article.BodyRenderer
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recorder audit.Recorder
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sites site.Repository
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authors author.Repository
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}
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type CreateArticleCommand struct {
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Title string
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Body string
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Format article.BodyFormat
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CreatedBy uint32
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}
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func NewCreateArticleUseCase(articleRepository article.Repository, bodyRenderer article.BodyRenderer, recorder audit.Recorder, sites site.Repository, authors author.Repository) *CreateArticleUseCase {
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return &CreateArticleUseCase{articleRepository: articleRepository, bodyRenderer: bodyRenderer, recorder: recorder, sites: sites, authors: authors}
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}
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func (g *CreateArticleUseCase) defaultSiteID() (uint32, error) {
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defaultSite, err := g.sites.GetDefault()
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if err != nil {
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return 0, err
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}
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return defaultSite.ID, nil
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}
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func (g *CreateArticleUseCase) creatorBylines(userID uint32) ([]author.Byline, error) {
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found, err := g.authors.GetByUserID(userID)
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if errors.Is(err, author.ErrAuthorNotFound) {
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return []author.Byline{}, nil
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}
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if err != nil {
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return nil, err
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}
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return []author.Byline{found.Byline()}, nil
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}
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func (g *CreateArticleUseCase) CreateArticle(ctx context.Context, createArticle CreateArticleCommand) (article.Article, error) {
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event := audit.NewEvent(audit.ActionArticleCreate, audit.CategoryArticles)
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if err := article.ValidateTitle(createArticle.Title); err != nil {
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recordFailure(ctx, g.recorder, event, err)
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return article.Article{}, err
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}
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siteID, err := g.defaultSiteID()
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if err != nil {
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recordFailure(ctx, g.recorder, event, err)
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return article.Article{}, err
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}
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creditedAuthors, err := g.creatorBylines(createArticle.CreatedBy)
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if err != nil {
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recordFailure(ctx, g.recorder, event, err)
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return article.Article{}, err
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}
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created, err := g.createWithFreeSlug(article.Article{
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Title: createArticle.Title,
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Body: createArticle.Body,
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IsOnline: false,
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SiteID: siteID,
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Authors: creditedAuthors,
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SEODismissed: []string{},
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})
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if err != nil {
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recordFailure(ctx, g.recorder, event, err)
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return article.Article{}, err
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}
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event.Target = articleTarget(created)
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g.recorder.Record(ctx, event)
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return renderArticle(g.bodyRenderer, created, createArticle.Format)
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}
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func (g *CreateArticleUseCase) createWithFreeSlug(draft article.Article) (article.Article, error) {
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base := article.GenerateSlug(draft.Title)
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for attempt := 0; attempt < maxCreateSlugAttempts; attempt++ {
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slug, err := freeSlug(g.articleRepository, draft.SiteID, base, 0, firstSlugAttempt)
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if err != nil {
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return article.Article{}, err
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}
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draft.Slug = slug
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created, err := g.articleRepository.Create(draft)
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if !isSlugTakenError(err) {
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return created, err
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}
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}
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return article.Article{}, article.ErrSlugTaken
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}
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func articleTarget(a article.Article) audit.Target {
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return audit.NewTarget(audit.TargetArticle, a.ID, a.Title)
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}
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