package migrations import ( "context" "time" "git.handmade.network/hmn/hmn/src/migration/types" "git.handmade.network/hmn/hmn/src/oops" "github.com/jackc/pgx/v5" ) func init() { registerMigration(UsernameUniqueIndex{}) } type UsernameUniqueIndex struct{} func (m UsernameUniqueIndex) Version() types.MigrationVersion { return types.MigrationVersion(time.Date(2021, 4, 27, 3, 43, 27, 0, time.UTC)) } func (m UsernameUniqueIndex) Name() string { return "UsernameUniqueIndex" } func (m UsernameUniqueIndex) Description() string { return "Prevent the creation of similar usernames with different character cases" } func (m UsernameUniqueIndex) Up(ctx context.Context, tx pgx.Tx) error { _, err := tx.Exec(ctx, `CREATE UNIQUE INDEX auth_user_unique_username_case_insensitive ON auth_user (LOWER(username))`) if err != nil { return oops.New(err, "failed to add unique index") } return nil } func (m UsernameUniqueIndex) Down(ctx context.Context, tx pgx.Tx) error { panic("Implement me") }