feat: schema-first workflow configuration

Author: radim

cmd/snapshot.go

@@ -379,10 +379,12 @@ func runSnapshotBuild() error {
 		return fmt.Errorf("pguri not configured in regress.yaml")
 	}
 
-	// Resolve and validate schema path
-	var schemaPath string
-	if snapshotBuildSchema != "" {
-		schemaPath = snapshotBuildSchema
+	// Use config values as defaults when flags not provided
+	schemaPath := snapshotBuildSchema
+	if schemaPath == "" {
+		schemaPath = regresql.GetSnapshotSchema(cfg.Snapshot)
+	}
+	if schemaPath != "" {
 		if !filepath.IsAbs(schemaPath) {
 			schemaPath = filepath.Join(snapshotCwd, schemaPath)
 		}
@@ -396,9 +398,9 @@ func runSnapshotBuild() error {
 		fixtures = regresql.GetSnapshotFixtures(cfg.Snapshot)
 	}
 
-	// Allow build with just schema (no fixtures)
+	// Require at least schema or fixtures
 	if len(fixtures) == 0 && schemaPath == "" {
-		return fmt.Errorf("no fixtures specified. Use --fixtures flag or configure snapshot.fixtures in regress.yaml")
+		return fmt.Errorf("no schema or fixtures specified. Use --schema/--fixtures flags or configure snapshot.schema/snapshot.fixtures in regress.yaml")
 	}
 
 	if len(fixtures) > 0 {

regresql/config.go

@@ -30,6 +30,7 @@ type (
 	SnapshotConfig struct {
 		Path     string   `yaml:"path,omitempty"`     // snapshot dump file path (default: snapshots/default.dump)
 		Format   string   `yaml:"format,omitempty"`   // pg_dump format: custom, plain, or directory
+		Schema   string   `yaml:"schema,omitempty"`   // external schema file (SQL, dump, or directory)
 		Fixtures []string `yaml:"fixtures,omitempty"` // SQL/YAML fixture files for snapshot build
 	}
 )

regresql/snapshot_build.go

@@ -230,6 +230,13 @@ func GetSnapshotFixtures(cfg *SnapshotConfig) []string {
 	return cfg.Fixtures
 }
 
+func GetSnapshotSchema(cfg *SnapshotConfig) string {
+	if cfg == nil {
+		return ""
+	}
+	return cfg.Schema
+}
+
 // FixturesExist validates that all fixture files exist before build.
 func FixturesExist(root string, fixtures []string) error {
 	for _, f := range fixtures {