[feature] Add `/api/v1/admin/custom_emojis` endpoint (#902)

* add admin emojis get path + model + docs

* stub admin emojis get processor function

* add id + disabled fields to admin emoji

* add emoji -> api admin emoji converter

* tidy up a bit

* add GetEmojis function

* finish up get emojis function

* order by shortcodedomain

* ASC

* tidy up + explain

* update to allow paging

* make admin emojis pageable

* fix mixed case paging

* normalize emoji queries a bit better

* test emoji get paging

* make limit optional

* fix incorrect path in media cleanup tests

* i have bad coder syndrome

* don't trimspace

* rename -> GetUseableEmojis

* wrap emoji query in subquery
avoid selecting more than we need

* fix a bit of sillyness teehee

* fix subquery postgres woes

1 files changed, 18 insertions, 0 deletions

diff --git a/internal/typeutils/internaltofrontend.go b/internal/typeutils/internaltofrontend.go
index 09bd5fc7d..7b4c3e8cc 100644
--- a/internal/typeutils/internaltofrontend.go
+++ b/internal/typeutils/internaltofrontend.go
@@ -363,6 +363,24 @@ func (c *converter) EmojiToAPIEmoji(ctx context.Context, e *gtsmodel.Emoji) (mod
 	}, nil
 }
 
+func (c *converter) EmojiToAdminAPIEmoji(ctx context.Context, e *gtsmodel.Emoji) (*model.AdminEmoji, error) {
+	emoji, err := c.EmojiToAPIEmoji(ctx, e)
+	if err != nil {
+		return nil, err
+	}
+
+	return &model.AdminEmoji{
+		Emoji:         emoji,
+		ID:            e.ID,
+		Disabled:      *e.Disabled,
+		Domain:        e.Domain,
+		UpdatedAt:     util.FormatISO8601(e.UpdatedAt),
+		TotalFileSize: e.ImageFileSize + e.ImageStaticFileSize,
+		ContentType:   e.ImageContentType,
+		URI:           e.URI,
+	}, nil
+}
+
 func (c *converter) TagToAPITag(ctx context.Context, t *gtsmodel.Tag) (model.Tag, error) {
 	return model.Tag{
 		Name: t.Name,