Add Purpose as a searchable field (#8067)

* Add Purpose as a searchable field

* Add New Index and Remove old for Channels

* Include Purpose in FullTextSearch Clause

* Move removeIndex for Channels into upgrade.go

store/sqlstore/channel_store.go

@@ -298,7 +298,7 @@ func (s SqlChannelStore) CreateIndexesIfNotExists() {
 	s.CreateIndexIfNotExists("idx_channelmembers_channel_id", "ChannelMembers", "ChannelId")
 	s.CreateIndexIfNotExists("idx_channelmembers_user_id", "ChannelMembers", "UserId")
 
-	s.CreateFullTextIndexIfNotExists("idx_channels_txt", "Channels", "Name, DisplayName")
+	s.CreateFullTextIndexIfNotExists("idx_channel_search_txt", "Channels", "Name, DisplayName, Purpose")
 }
 
 func (s SqlChannelStore) Save(channel *model.Channel, maxChannelsPerTeam int64) store.StoreChannel {
@@ -1573,7 +1573,7 @@ func (s SqlChannelStore) SearchMore(userId string, teamId string, term string) s
 
 func (s SqlChannelStore) buildLIKEClause(term string) (likeClause, likeTerm string) {
 	likeTerm = term
-	searchColumns := "Name, DisplayName"
+	searchColumns := "Name, DisplayName, Purpose"
 
 	// These chars must be removed from the like query.
 	for _, c := range ignoreLikeSearchChar {
@@ -1608,7 +1608,7 @@ func (s SqlChannelStore) buildFulltextClause(term string) (fulltextClause, fullt
 	// Copy the terms as we will need to prepare them differently for each search type.
 	fulltextTerm = term
 
-	searchColumns := "Name, DisplayName"
+	searchColumns := "Name, DisplayName, Purpose"
 
 	// These chars must be treated as spaces in the fulltext query.
 	for _, c := range spaceFulltextSearchChar {

store/sqlstore/upgrade.go

@@ -446,6 +446,8 @@ func UpgradeDatabaseToVersion50(sqlStore SqlStore) {
 		sqlStore.GetMaster().Exec("UPDATE Roles SET SchemeManaged=false WHERE Name NOT IN ('system_user', 'system_admin', 'team_user', 'team_admin', 'channel_user', 'channel_admin')")
 		sqlStore.CreateColumnIfNotExists("IncomingWebhooks", "ChannelLocked", "boolean", "boolean", "0")
 
+		sqlStore.RemoveIndexIfExists("idx_channels_txt", "Channels")
+
 		saveSchemaVersion(sqlStore, VERSION_5_0_0)
 	}
 }

store/storetest/channel_store.go

@@ -1708,6 +1708,14 @@ func testChannelStoreSearchMore(t *testing.T, ss store.Store) {
 	o8.Type = model.CHANNEL_PRIVATE
 	store.Must(ss.Channel().Save(&o8, -1))
 
+	o9 := model.Channel{}
+	o9.TeamId = o1.TeamId
+	o9.DisplayName = "Channel With Purpose"
+	o9.Purpose = "This can now be searchable!"
+	o9.Name = "with-purpose"
+	o9.Type = model.CHANNEL_OPEN
+	store.Must(ss.Channel().Save(&o9, -1))
+
 	if result := <-ss.Channel().SearchMore(m1.UserId, o1.TeamId, "ChannelA"); result.Err != nil {
 		t.Fatal(result.Err)
 	} else {
@@ -1773,6 +1781,19 @@ func testChannelStoreSearchMore(t *testing.T, ss store.Store) {
 		}
 	}
 
+	if result := <-ss.Channel().SearchMore(m1.UserId, o1.TeamId, "now searchable"); result.Err != nil {
+		t.Fatal(result.Err)
+	} else {
+		channels := result.Data.(*model.ChannelList)
+		if len(*channels) != 1 {
+			t.Fatal("should return 1 channel")
+		}
+
+		if (*channels)[0].Name != o9.Name {
+			t.Fatal("wrong channel returned")
+		}
+	}
+
 	/*
 		// Disabling this check as it will fail on PostgreSQL as we have "liberalised" channel matching to deal with
 		// Full-Text Stemming Limitations.
@@ -1884,6 +1905,14 @@ func testChannelStoreSearchInTeam(t *testing.T, ss store.Store) {
 	o11.Type = model.CHANNEL_OPEN
 	store.Must(ss.Channel().Save(&o11, -1))
 
+	o12 := model.Channel{}
+	o12.TeamId = o1.TeamId
+	o12.DisplayName = "Channel With Purpose"
+	o12.Purpose = "This can now be searchable!"
+	o12.Name = "with-purpose"
+	o12.Type = model.CHANNEL_OPEN
+	store.Must(ss.Channel().Save(&o12, -1))
+
 	for name, search := range map[string]func(teamId string, term string) store.StoreChannel{
 		"AutocompleteInTeam": ss.Channel().AutocompleteInTeam,
 		"SearchInTeam":       ss.Channel().SearchInTeam,
@@ -1986,6 +2015,19 @@ func testChannelStoreSearchInTeam(t *testing.T, ss store.Store) {
 					t.Fatal("wrong channel returned")
 				}
 			}
+
+			if result := <-search(o1.TeamId, "now searchable"); result.Err != nil {
+				t.Fatal(result.Err)
+			} else {
+				channels := result.Data.(*model.ChannelList)
+				if len(*channels) != 1 {
+					t.Fatal("should return 1 channel")
+				}
+
+				if (*channels)[0].Name != o12.Name {
+					t.Fatal("wrong channel returned")
+				}
+			}
 		})
 	}
 }