MM-12067: Add SetDefaultProfileImage to reset the user profile image to a generated one (#9449)

* MM-12067: Add SetDefaultProfileImage to reset the user profile image to a generated one

* Allow to get the default profile image for my user

* Allowing to reset the last update image date to 0

* PR reviews

store/sqlstore/user_store.go

@@ -212,6 +212,16 @@ func (us SqlUserStore) UpdateLastPictureUpdate(userId string) store.StoreChannel
 	})
 }
 
+func (us SqlUserStore) ResetLastPictureUpdate(userId string) store.StoreChannel {
+	return store.Do(func(result *store.StoreResult) {
+		if _, err := us.GetMaster().Exec("UPDATE Users SET LastPictureUpdate = :Time, UpdateAt = :Time WHERE Id = :UserId", map[string]interface{}{"Time": 0, "UserId": userId}); err != nil {
+			result.Err = model.NewAppError("SqlUserStore.UpdateUpdateAt", "store.sql_user.update_last_picture_update.app_error", nil, "user_id="+userId, http.StatusInternalServerError)
+		} else {
+			result.Data = userId
+		}
+	})
+}
+
 func (us SqlUserStore) UpdateUpdateAt(userId string) store.StoreChannel {
 	return store.Do(func(result *store.StoreResult) {
 		curTime := model.GetMillis()

store/store.go

@@ -230,6 +230,7 @@ type UserStore interface {
 	Save(user *model.User) StoreChannel
 	Update(user *model.User, allowRoleUpdate bool) StoreChannel
 	UpdateLastPictureUpdate(userId string) StoreChannel
+	ResetLastPictureUpdate(userId string) StoreChannel
 	UpdateUpdateAt(userId string) StoreChannel
 	UpdatePassword(userId, newPassword string) StoreChannel
 	UpdateAuthData(userId string, service string, authData *string, email string, resetMfa bool) StoreChannel

store/storetest/mocks/UserStore.go

@@ -593,6 +593,22 @@ func (_m *UserStore) PermanentDelete(userId string) store.StoreChannel {
 	return r0
 }
 
+// ResetLastPictureUpdate provides a mock function with given fields: userId
+func (_m *UserStore) ResetLastPictureUpdate(userId string) store.StoreChannel {
+	ret := _m.Called(userId)
+
+	var r0 store.StoreChannel
+	if rf, ok := ret.Get(0).(func(string) store.StoreChannel); ok {
+		r0 = rf(userId)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(store.StoreChannel)
+		}
+	}
+
+	return r0
+}
+
 // Save provides a mock function with given fields: user
 func (_m *UserStore) Save(user *model.User) store.StoreChannel {
 	ret := _m.Called(user)