MM-31875 soft delete reactions (#16654)

- soft delete reaction by setting new field Reactions.DeleteAt to non-zero.
- include new field Reactions.UpdateAt

model/reaction.go

@@ -15,6 +15,8 @@ type Reaction struct {
 	PostId    string `json:"post_id"`
 	EmojiName string `json:"emoji_name"`
 	CreateAt  int64  `json:"create_at"`
+	UpdateAt  int64  `json:"update_at"`
+	DeleteAt  int64  `json:"delete_at"`
 }
 
 func (o *Reaction) ToJson() string {
@@ -79,6 +81,10 @@ func (o *Reaction) IsValid() *AppError {
 		return NewAppError("Reaction.IsValid", "model.reaction.is_valid.create_at.app_error", nil, "", http.StatusBadRequest)
 	}
 
+	if o.UpdateAt == 0 {
+		return NewAppError("Reaction.IsValid", "model.reaction.is_valid.update_at.app_error", nil, "", http.StatusBadRequest)
+	}
+
 	return nil
 }
 
@@ -86,4 +92,10 @@ func (o *Reaction) PreSave() {
 	if o.CreateAt == 0 {
 		o.CreateAt = GetMillis()
 	}
+	o.UpdateAt = GetMillis()
+	o.DeleteAt = 0
+}
+
+func (o *Reaction) PreUpdate() {
+	o.UpdateAt = GetMillis()
 }

model/reaction_test.go

@@ -25,6 +25,7 @@ func TestReactionIsValid(t *testing.T) {
 				PostId:    NewId(),
 				EmojiName: "emoji",
 				CreateAt:  GetMillis(),
+				UpdateAt:  GetMillis(),
 			},
 			errMsg:    "",
 			shouldErr: false,
@@ -35,6 +36,7 @@ func TestReactionIsValid(t *testing.T) {
 				PostId:    NewId(),
 				EmojiName: "emoji",
 				CreateAt:  GetMillis(),
+				UpdateAt:  GetMillis(),
 			},
 			errMsg:    "user id should be invalid",
 			shouldErr: true,
@@ -45,6 +47,7 @@ func TestReactionIsValid(t *testing.T) {
 				PostId:    NewId(),
 				EmojiName: "emoji",
 				CreateAt:  GetMillis(),
+				UpdateAt:  GetMillis(),
 			},
 			errMsg:    "user id should be invalid",
 			shouldErr: true,
@@ -55,6 +58,7 @@ func TestReactionIsValid(t *testing.T) {
 				PostId:    "",
 				EmojiName: "emoji",
 				CreateAt:  GetMillis(),
+				UpdateAt:  GetMillis(),
 			},
 			errMsg:    "post id should be invalid",
 			shouldErr: true,
@@ -65,6 +69,7 @@ func TestReactionIsValid(t *testing.T) {
 				PostId:    "1234garbage",
 				EmojiName: "emoji",
 				CreateAt:  GetMillis(),
+				UpdateAt:  GetMillis(),
 			},
 			errMsg:    "post id should be invalid",
 			shouldErr: true,
@@ -75,6 +80,7 @@ func TestReactionIsValid(t *testing.T) {
 				PostId:    NewId(),
 				EmojiName: strings.Repeat("a", 64),
 				CreateAt:  GetMillis(),
+				UpdateAt:  GetMillis(),
 			},
 			errMsg:    "",
 			shouldErr: false,
@@ -85,6 +91,7 @@ func TestReactionIsValid(t *testing.T) {
 				PostId:    NewId(),
 				EmojiName: "emoji-",
 				CreateAt:  GetMillis(),
+				UpdateAt:  GetMillis(),
 			},
 			errMsg:    "",
 			shouldErr: false,
@@ -95,6 +102,7 @@ func TestReactionIsValid(t *testing.T) {
 				PostId:    NewId(),
 				EmojiName: "emoji_",
 				CreateAt:  GetMillis(),
+				UpdateAt:  GetMillis(),
 			},
 			errMsg:    "",
 			shouldErr: false,
@@ -105,6 +113,7 @@ func TestReactionIsValid(t *testing.T) {
 				PostId:    NewId(),
 				EmojiName: "+1",
 				CreateAt:  GetMillis(),
+				UpdateAt:  GetMillis(),
 			},
 			errMsg:    "",
 			shouldErr: false,
@@ -115,6 +124,7 @@ func TestReactionIsValid(t *testing.T) {
 				PostId:    NewId(),
 				EmojiName: "emoji:",
 				CreateAt:  GetMillis(),
+				UpdateAt:  GetMillis(),
 			},
 			errMsg:    "",
 			shouldErr: true,
@@ -125,6 +135,7 @@ func TestReactionIsValid(t *testing.T) {
 				PostId:    NewId(),
 				EmojiName: "",
 				CreateAt:  GetMillis(),
+				UpdateAt:  GetMillis(),
 			},
 			errMsg:    "emoji name should be invalid",
 			shouldErr: true,
@@ -135,6 +146,7 @@ func TestReactionIsValid(t *testing.T) {
 				PostId:    NewId(),
 				EmojiName: strings.Repeat("a", 65),
 				CreateAt:  GetMillis(),
+				UpdateAt:  GetMillis(),
 			},
 			errMsg:    "emoji name should be invalid",
 			shouldErr: true,
@@ -145,10 +157,22 @@ func TestReactionIsValid(t *testing.T) {
 				PostId:    NewId(),
 				EmojiName: "emoji",
 				CreateAt:  0,
+				UpdateAt:  GetMillis(),
 			},
 			errMsg:    "create at should be invalid",
 			shouldErr: true,
 		},
+		{
+			reaction: Reaction{
+				UserId:    NewId(),
+				PostId:    NewId(),
+				EmojiName: "emoji",
+				CreateAt:  GetMillis(),
+				UpdateAt:  0,
+			},
+			errMsg:    "update at should be invalid",
+			shouldErr: true,
+		},
 	}
 
 	for _, test := range tests {