feat(scripts): support external file embedding

pkg/writers/sqlexec/writer.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/jackc/pgx/v5"
 
+	"git.warky.dev/wdevs/relspecgo/pkg/assetloader"
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
 	"git.warky.dev/wdevs/relspecgo/pkg/pgsql"
 	"git.warky.dev/wdevs/relspecgo/pkg/writers"
@@ -138,7 +139,28 @@ func (w *Writer) executeScripts(ctx context.Context, conn *pgx.Conn, scripts []*
 			script.Name, script.Priority, script.Sequence)
 
 		// Execute the SQL script
-		_, err := conn.Exec(ctx, script.SQL)
+		sql, err := processEmbedDirectives(script)
+		if err != nil {
+			if ignoreErrors {
+				fmt.Printf("⚠ Error preparing %s: %v (continuing due to --ignore-errors)\n", script.Name, err)
+				failedScripts = append(failedScripts, struct {
+					name     string
+					priority int
+					sequence uint
+					err      error
+				}{
+					name:     script.Name,
+					priority: script.Priority,
+					sequence: script.Sequence,
+					err:      err,
+				})
+				continue
+			}
+			return fmt.Errorf("script %s (Priority=%d, Sequence=%d): %w",
+				script.Name, script.Priority, script.Sequence, err)
+		}
+
+		_, err = conn.Exec(ctx, sql)
 		if err != nil {
 			if ignoreErrors {
 				fmt.Printf("⚠ Error executing %s: %v (continuing due to --ignore-errors)\n", script.Name, err)
@@ -179,3 +201,11 @@ func (w *Writer) executeScripts(ctx context.Context, conn *pgx.Conn, scripts []*
 
 	return nil
 }
+
+func processEmbedDirectives(script *models.Script) (string, error) {
+	sqlPath, _ := script.Metadata[assetloader.ScriptSourcePathMetadataKey].(string)
+	if sqlPath == "" {
+		return script.SQL, nil
+	}
+	return assetloader.ProcessEmbedDirectives(sqlPath, script.SQL)
+}

pkg/writers/sqlexec/writer_test.go

@@ -1,8 +1,12 @@
 package sqlexec
 
 import (
+	"os"
+	"path/filepath"
+	"strings"
 	"testing"
 
+	"git.warky.dev/wdevs/relspecgo/pkg/assetloader"
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
 	"git.warky.dev/wdevs/relspecgo/pkg/writers"
 )
@@ -216,3 +220,36 @@ func TestWriter_WriteSchema_EmptyScripts(t *testing.T) {
 //     // Verify results
 //     // Cleanup
 // }
+
+func TestProcessEmbedDirectives_UsesScriptSourcePath(t *testing.T) {
+	dir := t.TempDir()
+	sqlPath := filepath.Join(dir, "1_001_seed.sql")
+	if err := os.WriteFile(filepath.Join(dir, "body.txt"), []byte("writer text"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	script := models.InitScript("seed")
+	script.SQL = "-- @embed: path=body.txt var=:body mode=text\nSELECT :body;"
+	script.Metadata[assetloader.ScriptSourcePathMetadataKey] = sqlPath
+
+	got, err := processEmbedDirectives(script)
+	if err != nil {
+		t.Fatalf("processEmbedDirectives failed: %v", err)
+	}
+	if !strings.Contains(got, "SELECT 'writer text';") {
+		t.Fatalf("script embed directive was not processed:\n%s", got)
+	}
+}
+
+func TestProcessEmbedDirectives_NoSourcePathLeavesSQLUnchanged(t *testing.T) {
+	script := models.InitScript("seed")
+	script.SQL = "-- @embed: path=missing.txt var=:body mode=text\nSELECT :body;"
+
+	got, err := processEmbedDirectives(script)
+	if err != nil {
+		t.Fatalf("processEmbedDirectives failed: %v", err)
+	}
+	if got != script.SQL {
+		t.Fatalf("expected unchanged SQL without source path, got:\n%s", got)
+	}
+}