[feature] Show + federate emojis in accounts (#837)

* Start adding account emoji

* get emojis serialized + deserialized nicely

* update tests

* set / retrieve emojis on accounts

* show account emojis in web view

* fetch emojis from db based on ids

* fix typo in test

* lint

* fix pg migration

* update tests

* update emoji checking logic

* update comment

* clarify comments + add some spacing

* tidy up loops a lil (thanks kim)

internal/processing/account/delete.go

@@ -259,6 +259,8 @@ selectStatusesLoop:
 	account.HeaderMediaAttachmentID = ""
 	account.HeaderRemoteURL = ""
 	account.Reason = ""
+	account.Emojis = []*gtsmodel.Emoji{}
+	account.EmojiIDs = []string{}
 	account.Fields = []gtsmodel.Field{}
 	hideCollections := true
 	account.HideCollections = &hideCollections

internal/processing/account/update.go

@@ -27,6 +27,7 @@ import (
 	"github.com/superseriousbusiness/gotosocial/internal/ap"
 	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
 	"github.com/superseriousbusiness/gotosocial/internal/config"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
 	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 	"github.com/superseriousbusiness/gotosocial/internal/log"
@@ -46,11 +47,14 @@ func (p *processor) Update(ctx context.Context, account *gtsmodel.Account, form
 		account.Bot = form.Bot
 	}
 
+	var updateEmojis bool
+
 	if form.DisplayName != nil {
 		if err := validate.DisplayName(*form.DisplayName); err != nil {
 			return nil, gtserror.NewErrorBadRequest(err)
 		}
 		account.DisplayName = text.SanitizePlaintext(*form.DisplayName)
+		updateEmojis = true
 	}
 
 	if form.Note != nil {
@@ -69,6 +73,30 @@ func (p *processor) Update(ctx context.Context, account *gtsmodel.Account, form
 
 		// Set updated HTML-ified note
 		account.Note = note
+		updateEmojis = true
+	}
+
+	if updateEmojis {
+		// account emojis -- treat the sanitized display name and raw
+		// note like one long text for the purposes of deriving emojis
+		accountEmojiShortcodes := util.DeriveEmojisFromText(account.DisplayName + "\n\n" + account.NoteRaw)
+		account.Emojis = make([]*gtsmodel.Emoji, 0, len(accountEmojiShortcodes))
+		account.EmojiIDs = make([]string, 0, len(accountEmojiShortcodes))
+
+		for _, shortcode := range accountEmojiShortcodes {
+			emoji, err := p.db.GetEmojiByShortcodeDomain(ctx, shortcode, "")
+			if err != nil {
+				if err != db.ErrNoEntries {
+					log.Errorf("error getting local emoji with shortcode %s: %s", shortcode, err)
+				}
+				continue
+			}
+
+			if *emoji.VisibleInPicker && !*emoji.Disabled {
+				account.Emojis = append(account.Emojis, emoji)
+				account.EmojiIDs = append(account.EmojiIDs, emoji.ID)
+			}
+		}
 	}
 
 	if form.Avatar != nil && form.Avatar.Size != 0 {

internal/processing/fromfederator.go

@@ -369,10 +369,14 @@ func (p *processor) processUpdateAccountFromFederator(ctx context.Context, feder
 		return err
 	}
 
+	// further database updates occur inside getremoteaccount
 	if _, err := p.federator.GetRemoteAccount(ctx, dereferencing.GetRemoteAccountParams{
-		RequestingUsername: federatorMsg.ReceivingAccount.Username,
-		RemoteAccountID:    incomingAccountURL,
-		Blocking:           true,
+		RequestingUsername:    federatorMsg.ReceivingAccount.Username,
+		RemoteAccountID:       incomingAccountURL,
+		RemoteAccountHost:     incomingAccount.Domain,
+		RemoteAccountUsername: incomingAccount.Username,
+		PartialAccount:        incomingAccount,
+		Blocking:              true,
 	}); err != nil {
 		return fmt.Errorf("error enriching updated account from federator: %s", err)
 	}