Fix dropTableColumns sqlite implementation (#7710)

* Fix dropTableColumns sqlite implementation

* use droptables and its index dropping support in v78 and v85

* golang-ci fixes

* Add migration from gitea 1.3.3 for sqlite which reveals the droptables bug - thus showing this works

3 files changed, 23 insertions, 97 deletions

diff --git a/models/migrations/migrations.go b/models/migrations/migrations.go
index 6459036e4a..bbd1bb734f 100644
--- a/models/migrations/migrations.go
+++ b/models/migrations/migrations.go
@@ -327,11 +327,25 @@ func dropTableColumns(sess *xorm.Session, tableName string, columnNames ...strin
 			return err
 		}
 		tableSQL := string(res[0]["sql"])
+
+		// Separate out the column definitions
 		tableSQL = tableSQL[strings.Index(tableSQL, "("):]
+
+		// Remove the required columnNames
 		for _, name := range columnNames {
-			tableSQL = regexp.MustCompile(regexp.QuoteMeta("`"+name+"`")+"[^`,)]*[,)]").ReplaceAllString(tableSQL, "")
+			tableSQL = regexp.MustCompile(regexp.QuoteMeta("`"+name+"`")+"[^`,)]*?[,)]").ReplaceAllString(tableSQL, "")
+		}
+
+		// Ensure the query is ended properly
+		tableSQL = strings.TrimSpace(tableSQL)
+		if tableSQL[len(tableSQL)-1] != ')' {
+			if tableSQL[len(tableSQL)-1] == ',' {
+				tableSQL = tableSQL[:len(tableSQL)-1]
+			}
+			tableSQL += ")"
 		}
 
+		// Find all the columns in the table
 		columns := regexp.MustCompile("`([^`]*)`").FindAllString(tableSQL, -1)
 
 		tableSQL = fmt.Sprintf("CREATE TABLE `new_%s_new` ", tableName) + tableSQL
diff --git a/models/migrations/v78.go b/models/migrations/v78.go
index 511a4f57fa..8082996b6f 100644
--- a/models/migrations/v78.go
+++ b/models/migrations/v78.go
@@ -5,13 +5,7 @@
 package migrations
 
 import (
-	"fmt"
-
-	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/modules/log"
-
 	"github.com/go-xorm/xorm"
-	"xorm.io/core"
 )
 
 func renameRepoIsBareToIsEmpty(x *xorm.Engine) error {
@@ -21,73 +15,28 @@ func renameRepoIsBareToIsEmpty(x *xorm.Engine) error {
 		IsEmpty bool `xorm:"INDEX"`
 	}
 
-	// First remove the index
 	sess := x.NewSession()
 	defer sess.Close()
 	if err := sess.Begin(); err != nil {
 		return err
 	}
 
-	var err error
-	if models.DbCfg.Type == core.POSTGRES || models.DbCfg.Type == core.SQLITE {
-		_, err = sess.Exec("DROP INDEX IF EXISTS IDX_repository_is_bare")
-	} else if models.DbCfg.Type == core.MSSQL {
-		_, err = sess.Exec(`DECLARE @ConstraintName VARCHAR(256)
-		DECLARE @SQL NVARCHAR(256)
-		SELECT @ConstraintName = obj.name FROM sys.columns col LEFT OUTER JOIN sys.objects obj ON obj.object_id = col.default_object_id AND obj.type = 'D' WHERE col.object_id = OBJECT_ID('repository') AND obj.name IS NOT NULL AND col.name = 'is_bare'
-		SET @SQL = N'ALTER TABLE [repository] DROP CONSTRAINT [' + @ConstraintName + N']'
-		EXEC sp_executesql @SQL`)
-		if err != nil {
-			return err
-		}
-	} else if models.DbCfg.Type == core.MYSQL {
-		indexes, err := sess.QueryString(`SHOW INDEX FROM repository WHERE KEY_NAME = 'IDX_repository_is_bare'`)
-		if err != nil {
-			return err
-		}
-
-		if len(indexes) >= 1 {
-			_, err = sess.Exec("DROP INDEX IDX_repository_is_bare ON repository")
-			if err != nil {
-				return fmt.Errorf("Drop index failed: %v", err)
-			}
-		}
-	} else {
-		_, err = sess.Exec("DROP INDEX IDX_repository_is_bare ON repository")
-	}
-
-	if err != nil {
-		return fmt.Errorf("Drop index failed: %v", err)
-	}
-
-	if err = sess.Commit(); err != nil {
-		return err
-	}
-
-	if err := sess.Begin(); err != nil {
-		return err
-	}
-
 	if err := sess.Sync2(new(Repository)); err != nil {
 		return err
 	}
 	if _, err := sess.Exec("UPDATE repository SET is_empty = is_bare;"); err != nil {
 		return err
 	}
-
-	if models.DbCfg.Type != core.SQLITE {
-		_, err = sess.Exec("ALTER TABLE repository DROP COLUMN is_bare")
-		if err != nil {
-			return fmt.Errorf("Drop column failed: %v", err)
-		}
+	if err := sess.Commit(); err != nil {
+		return err
 	}
 
-	if err = sess.Commit(); err != nil {
+	if err := sess.Begin(); err != nil {
 		return err
 	}
-
-	if models.DbCfg.Type == core.SQLITE {
-		log.Warn("TABLE repository's COLUMN is_bare should be DROP but sqlite is not supported, you could manually do that.")
+	if err := dropTableColumns(sess, "repository", "is_bare"); err != nil {
+		return err
 	}
-	return nil
+
+	return sess.Commit()
 }
diff --git a/models/migrations/v85.go b/models/migrations/v85.go
index b8d0ee5443..157c06d7ba 100644
--- a/models/migrations/v85.go
+++ b/models/migrations/v85.go
@@ -8,9 +8,7 @@ import (
 	"fmt"
 
 	"github.com/go-xorm/xorm"
-	"xorm.io/core"
 
-	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/generate"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/util"
@@ -37,41 +35,6 @@ func hashAppToken(x *xorm.Engine) error {
 	// First remove the index
 	sess := x.NewSession()
 	defer sess.Close()
-	if err := sess.Begin(); err != nil {
-		return err
-	}
-
-	var err error
-	if models.DbCfg.Type == core.POSTGRES || models.DbCfg.Type == core.SQLITE {
-		_, err = sess.Exec("DROP INDEX IF EXISTS UQE_access_token_sha1")
-	} else if models.DbCfg.Type == core.MSSQL {
-		_, err = sess.Exec(`DECLARE @ConstraintName VARCHAR(256)
-		DECLARE @SQL NVARCHAR(256)
-		SELECT @ConstraintName = obj.name FROM sys.columns col LEFT OUTER JOIN sys.objects obj ON obj.object_id = col.default_object_id AND obj.type = 'D' WHERE col.object_id = OBJECT_ID('access_token') AND obj.name IS NOT NULL AND col.name = 'sha1'
-		SET @SQL = N'ALTER TABLE [access_token] DROP CONSTRAINT [' + @ConstraintName + N']'
-		EXEC sp_executesql @SQL`)
-	} else if models.DbCfg.Type == core.MYSQL {
-		indexes, err := sess.QueryString(`SHOW INDEX FROM access_token WHERE KEY_NAME = 'UQE_access_token_sha1'`)
-		if err != nil {
-			return err
-		}
-
-		if len(indexes) >= 1 {
-			_, err = sess.Exec("DROP INDEX UQE_access_token_sha1 ON access_token")
-			if err != nil {
-				return err
-			}
-		}
-	} else {
-		_, err = sess.Exec("DROP INDEX UQE_access_token_sha1 ON access_token")
-	}
-	if err != nil {
-		return fmt.Errorf("Drop index failed: %v", err)
-	}
-
-	if err = sess.Commit(); err != nil {
-		return err
-	}
 
 	if err := sess.Begin(); err != nil {
 		return err
@@ -81,7 +44,7 @@ func hashAppToken(x *xorm.Engine) error {
 		return fmt.Errorf("Sync2: %v", err)
 	}
 
-	if err = sess.Commit(); err != nil {
+	if err := sess.Commit(); err != nil {
 		return err
 	}