[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)

7 files changed, 98 insertions, 0 deletions

diff --git a/testrig/db.go b/testrig/db.go
index ae3132835..72446e2bc 100644
--- a/testrig/db.go
+++ b/testrig/db.go
@@ -32,6 +32,7 @@ import (
 
 var testModels = []interface{}{
 	&gtsmodel.Account{},
+	&gtsmodel.AccountToEmoji{},
 	&gtsmodel.Application{},
 	&gtsmodel.Block{},
 	&gtsmodel.DomainBlock{},
diff --git a/testrig/media/kip-original.gif b/testrig/media/kip-original.gif
new file mode 100644
index 000000000..6e83746f6
--- /dev/null
+++ b/testrig/media/kip-original.gif
diff --git a/testrig/media/kip-static.png b/testrig/media/kip-static.png
new file mode 100644
index 000000000..1ba296687
--- /dev/null
+++ b/testrig/media/kip-static.png
diff --git a/testrig/media/yell-original.png b/testrig/media/yell-original.png
new file mode 100644
index 000000000..b369a96b1
--- /dev/null
+++ b/testrig/media/yell-original.png
diff --git a/testrig/media/yell-static.png b/testrig/media/yell-static.png
new file mode 100644
index 000000000..9b5d2837e
--- /dev/null
+++ b/testrig/media/yell-static.png
diff --git a/testrig/testmodels.go b/testrig/testmodels.go
index 98b23721e..f53022fd8 100644
--- a/testrig/testmodels.go
+++ b/testrig/testmodels.go
@@ -952,6 +952,28 @@ func NewTestEmojis() map[string]*gtsmodel.Emoji {
 			VisibleInPicker:        TrueBool(),
 			CategoryID:             "",
 		},
+		"yell": {
+			ID:                     "01GD5KP5CQEE1R3X43Y1EHS2CW",
+			Shortcode:              "yell",
+			Domain:                 "fossbros-anonymous.io",
+			CreatedAt:              TimeMustParse("2020-03-18T13:12:00+01:00"),
+			UpdatedAt:              TimeMustParse("2020-03-18T13:12:00+01:00"),
+			ImageRemoteURL:         "http://fossbros-anonymous.io/emoji/yell.gif",
+			ImageStaticRemoteURL:   "",
+			ImageURL:               "http://localhost:8080/fileserver/01GD5KR15NHTY8FZ01CD4D08XP/emoji/original/01GD5KP5CQEE1R3X43Y1EHS2CW.png",
+			ImagePath:              "/tmp/gotosocial/01GD5KR15NHTY8FZ01CD4D08XP/emoji/original/01GD5KP5CQEE1R3X43Y1EHS2CW.png",
+			ImageStaticURL:         "http://localhost:8080/fileserver/01GD5KR15NHTY8FZ01CD4D08XP/emoji/static/01GD5KP5CQEE1R3X43Y1EHS2CW.png",
+			ImageStaticPath:        "/tmp/gotosocial/01GD5KR15NHTY8FZ01CD4D08XP/emoji/static/01GD5KP5CQEE1R3X43Y1EHS2CW.png",
+			ImageContentType:       "image/png",
+			ImageStaticContentType: "image/png",
+			ImageFileSize:          10889,
+			ImageStaticFileSize:    10808,
+			ImageUpdatedAt:         TimeMustParse("2020-03-18T13:12:00+01:00"),
+			Disabled:               FalseBool(),
+			URI:                    "http://fossbros-anonymous.io/emoji/01GD5KP5CQEE1R3X43Y1EHS2CW",
+			VisibleInPicker:        FalseBool(),
+			CategoryID:             "",
+		},
 	}
 }
 
@@ -1045,6 +1067,10 @@ func newTestStoredEmoji() map[string]filenames {
 			Original: "rainbow-original.png",
 			Static:   "rainbow-static.png",
 		},
+		"yell": {
+			Original: "yell-original.png",
+			Static:   "yell-static.png",
+		},
 	}
 }
 
@@ -1941,6 +1967,22 @@ func NewTestFediServices() map[string]vocab.ActivityStreamsService {
 	}
 }
 
+func NewTestFediEmojis() map[string]vocab.TootEmoji {
+	return map[string]vocab.TootEmoji{
+		"http://fossbros-anonymous.io/emoji/01GD5HCC2YECT012TK8PAGX4D1": newAPEmoji(
+			URLMustParse("http://fossbros-anonymous.io/emoji/01GD5HCC2YECT012TK8PAGX4D1"),
+			"kip_van_den_bos",
+			TimeMustParse("2022-09-13T12:13:12+02:00"),
+			newAPImage(
+				URLMustParse("http://fossbros-anonymous.io/emoji/kip.gif"),
+				"image/gif",
+				"",
+				"",
+			),
+		),
+	}
+}
+
 // RemoteAttachmentFile mimics a remote (federated) attachment
 type RemoteAttachmentFile struct {
 	Data        []byte
@@ -1968,6 +2010,16 @@ func NewTestFediAttachments(relativePath string) map[string]RemoteAttachmentFile
 		panic(err)
 	}
 
+	kipBytes, err := os.ReadFile(fmt.Sprintf("%s/kip-original.gif", relativePath))
+	if err != nil {
+		panic(err)
+	}
+
+	yellBytes, err := os.ReadFile(fmt.Sprintf("%s/yell-original.png", relativePath))
+	if err != nil {
+		panic(err)
+	}
+
 	return map[string]RemoteAttachmentFile{
 		"https://s3-us-west-2.amazonaws.com/plushcity/media_attachments/files/106/867/380/219/163/828/original/88e8758c5f011439.jpg": {
 			Data:        beeBytes,
@@ -1985,6 +2037,14 @@ func NewTestFediAttachments(relativePath string) map[string]RemoteAttachmentFile
 			Data:        peglinBytes,
 			ContentType: "image/gif",
 		},
+		"http://fossbros-anonymous.io/emoji/kip.gif": {
+			Data:        kipBytes,
+			ContentType: "image/gif",
+		},
+		"http://fossbros-anonymous.io/emoji/yell.gif": {
+			Data:        yellBytes,
+			ContentType: "image/png",
+		},
 	}
 }
 
@@ -2857,6 +2917,28 @@ func newAPImage(url *url.URL, mediaType string, imageDescription string, blurhas
 	return image
 }
 
+func newAPEmoji(id *url.URL, name string, updated time.Time, image vocab.ActivityStreamsImage) vocab.TootEmoji {
+	emoji := streams.NewTootEmoji()
+
+	idProp := streams.NewJSONLDIdProperty()
+	idProp.SetIRI(id)
+	emoji.SetJSONLDId(idProp)
+
+	nameProp := streams.NewActivityStreamsNameProperty()
+	nameProp.AppendXMLSchemaString(`:` + strings.Trim(name, ":") + `:`)
+	emoji.SetActivityStreamsName(nameProp)
+
+	updatedProp := streams.NewActivityStreamsUpdatedProperty()
+	updatedProp.Set(updated)
+	emoji.SetActivityStreamsUpdated(updatedProp)
+
+	iconProp := streams.NewActivityStreamsIconProperty()
+	iconProp.AppendActivityStreamsImage(image)
+	emoji.SetActivityStreamsIcon(iconProp)
+
+	return emoji
+}
+
 // NewAPNote returns a new activity streams note for the given parameters
 func NewAPNote(
 	noteID *url.URL,
diff --git a/testrig/transportcontroller.go b/testrig/transportcontroller.go
index 68f03398d..70f2f0c61 100644
--- a/testrig/transportcontroller.go
+++ b/testrig/transportcontroller.go
@@ -64,6 +64,7 @@ type MockHTTPClient struct {
 	testRemoteGroups      map[string]vocab.ActivityStreamsGroup
 	testRemoteServices    map[string]vocab.ActivityStreamsService
 	testRemoteAttachments map[string]RemoteAttachmentFile
+	testRemoteEmojis      map[string]vocab.TootEmoji
 
 	SentMessages sync.Map
 }
@@ -90,6 +91,7 @@ func NewMockHTTPClient(do func(req *http.Request) (*http.Response, error), relat
 	mockHTTPClient.testRemoteGroups = NewTestFediGroups()
 	mockHTTPClient.testRemoteServices = NewTestFediServices()
 	mockHTTPClient.testRemoteAttachments = NewTestFediAttachments(relativeMediaPath)
+	mockHTTPClient.testRemoteEmojis = NewTestFediEmojis()
 
 	mockHTTPClient.do = func(req *http.Request) (*http.Response, error) {
 		responseCode := http.StatusNotFound
@@ -173,6 +175,19 @@ func NewMockHTTPClient(do func(req *http.Request) (*http.Response, error), relat
 			responseBytes = serviceJSON
 			responseContentType = applicationActivityJSON
 			responseContentLength = len(serviceJSON)
+		} else if emoji, ok := mockHTTPClient.testRemoteEmojis[req.URL.String()]; ok {
+			emojiI, err := streams.Serialize(emoji)
+			if err != nil {
+				panic(err)
+			}
+			emojiJSON, err := json.Marshal(emojiI)
+			if err != nil {
+				panic(err)
+			}
+			responseCode = http.StatusOK
+			responseBytes = emojiJSON
+			responseContentType = applicationActivityJSON
+			responseContentLength = len(emojiJSON)
 		} else if attachment, ok := mockHTTPClient.testRemoteAttachments[req.URL.String()]; ok {
 			responseCode = http.StatusOK
 			responseBytes = attachment.Data