Move translators db->ap to separate module

activitypub/translators/note.go

@@ -0,0 +1,113 @@
+package translators
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"git.mstar.dev/mstar/linstrom/config"
+	"git.mstar.dev/mstar/linstrom/storage-new/dbgen"
+	"git.mstar.dev/mstar/linstrom/storage-new/models"
+	webshared "git.mstar.dev/mstar/linstrom/web/shared"
+)
+
+type Tag struct {
+	Type string `json:"type"`
+	Href string `json:"href"`
+	Name string `json:"name"`
+}
+
+type ObjectNote struct {
+	// Context should be set, if needed, by the endpoint handler
+	Context any `json:"@context,omitempty"`
+
+	// Attributes below set from storage
+
+	Id               string    `json:"id"`
+	Type             string    `json:"type"`
+	Summary          *string   `json:"summary"`
+	InReplyTo        *string   `json:"inReplyTo"`
+	Published        time.Time `json:"published"`
+	Url              string    `json:"url"`
+	AttributedTo     string    `json:"attributedTo"`
+	To               []string  `json:"to"`
+	CC               []string  `json:"cc"`
+	Sensitive        bool      `json:"sensitive"`
+	AtomUri          string    `json:"atomUri"`
+	InReplyToAtomUri *string   `json:"inReplyToAtomUri"`
+	// Conversation     string `json:"conversation"` // FIXME: Uncomment once understood what this field wants
+	Content string `json:"content"`
+	// ContentMap  map[string]string `json:"content_map"` // TODO: Uncomment once/if support for multiple languages available
+	// Attachments []string          `json:"attachments"` // FIXME: Change this to document type
+	Tags []Tag `json:"tag"`
+	// Replies     any               `json:"replies"`     // FIXME: Change this to collection type embedding first page
+	// Likes       any               `json:"likes"`       // FIXME: Change this to collection
+	// Shares      any               `json:"shares"`      // FIXME: Change this to collection, is boosts
+}
+
+func NoteFromStorage(ctx context.Context, id string) (*ObjectNote, error) {
+	note, err := dbgen.Note.Where(dbgen.Note.ID.Eq(id)).
+		Preload(dbgen.Note.Creator).
+		Preload(dbgen.Note.PingRelations).
+		Preload(dbgen.Note.Tags).
+		First()
+	if err != nil {
+		return nil, err
+	}
+	// TODO: Check access level, requires acting user to be included in function signature
+	publicUrlPrefix := config.GlobalConfig.General.GetFullPublicUrl()
+	data := &ObjectNote{
+		Id:           publicUrlPrefix + "/api/activitypub/note/" + id,
+		Type:         "Note",
+		Published:    note.CreatedAt,
+		AttributedTo: publicUrlPrefix + "/api/activitypub/user/" + note.CreatorId,
+		Content:      note.RawContent, // FIXME: Escape content
+		Url:          publicUrlPrefix + "/@" + note.Creator.Username + "/" + id,
+		AtomUri:      publicUrlPrefix + "/api/activitypub/object/" + id,
+		Tags:         []Tag{},
+	}
+	switch note.AccessLevel {
+	case models.NOTE_TARGET_PUBLIC:
+		data.To = []string{
+			"https://www.w3.org/ns/activitystreams#Public",
+		}
+		data.CC = []string{
+			fmt.Sprintf("%s/api/activitypub/user/%s/followers", publicUrlPrefix, note.CreatorId),
+		}
+	case models.NOTE_TARGET_HOME:
+		return nil, fmt.Errorf("home access level not implemented")
+	case models.NOTE_TARGET_FOLLOWERS:
+		return nil, fmt.Errorf("followers access level not implemented")
+	case models.NOTE_TARGET_DM:
+		return nil, fmt.Errorf("dm access level not implemented")
+	default:
+		return nil, fmt.Errorf("unknown access level %v", note.AccessLevel)
+	}
+	if note.RepliesTo.Valid {
+		data.InReplyTo = &note.RepliesTo.String
+		data.InReplyToAtomUri = &note.RepliesTo.String
+	}
+	if note.ContentWarning.Valid {
+		data.Summary = &note.ContentWarning.String
+		data.Sensitive = true
+	}
+	for _, ping := range note.PingRelations {
+		target, err := dbgen.User.GetById(ping.PingTargetId)
+		if err != nil {
+			return nil, err
+		}
+		data.Tags = append(data.Tags, Tag{
+			Type: "Mention",
+			Href: webshared.UserPublicUrl(target.ID),
+			Name: target.Username,
+		})
+	}
+	for _, tag := range note.Tags {
+		data.Tags = append(data.Tags, Tag{
+			Type: "Hashtag",
+			Href: tag.TagUrl,
+			Name: tag.Tag,
+		})
+	}
+	return data, nil
+}