added plugins subpackage and added basic support for js migrations

plugins/migratecmd/templates.go

@@ -0,0 +1,112 @@
+package migratecmd
+
+import (
+	"encoding/json"
+	"fmt"
+	"path/filepath"
+
+	"github.com/pocketbase/pocketbase/models"
+)
+
+const (
+	TemplateLangJS = "js"
+	TemplateLangGo = "go"
+)
+
+// -------------------------------------------------------------------
+// JavaScript templates
+// -------------------------------------------------------------------
+
+func (p *plugin) jsCreateTemplate() (string, error) {
+	const template = `migrate((db) => {
+  // add up queries...
+}, (db) => {
+  // add down queries...
+})
+`
+
+	return template, nil
+}
+
+func (p *plugin) jsSnapshotTemplate(collections []*models.Collection) (string, error) {
+	jsonData, err := json.MarshalIndent(collections, "  ", "  ")
+	if err != nil {
+		return "", fmt.Errorf("failed to serialize collections list: %v", err)
+	}
+
+	const template = `migrate((db) => {
+  const snapshot = %s;
+
+  const collections = snapshot.map((item) => unmarshal(item, new Collection()));
+
+  return Dao(db).importCollections(collections, true, null);
+}, (db) => {
+  return null;
+})
+`
+
+	return fmt.Sprintf(template, string(jsonData)), nil
+}
+
+// -------------------------------------------------------------------
+// Go templates
+// -------------------------------------------------------------------
+
+func (p *plugin) goCreateTemplate() (string, error) {
+	const template = `package %s
+
+import (
+	"github.com/pocketbase/dbx"
+	m "github.com/pocketbase/pocketbase/migrations"
+)
+
+func init() {
+	m.Register(func(db dbx.Builder) error {
+		// add up queries...
+
+		return nil
+	}, func(db dbx.Builder) error {
+		// add down queries...
+
+		return nil
+	})
+}
+`
+
+	return fmt.Sprintf(template, filepath.Base(p.options.Dir)), nil
+}
+
+func (p *plugin) goSnapshotTemplate(collections []*models.Collection) (string, error) {
+	jsonData, err := json.MarshalIndent(collections, "\t", "\t\t")
+	if err != nil {
+		return "", fmt.Errorf("failed to serialize collections list: %v", err)
+	}
+
+	const template = `package %s
+
+import (
+	"encoding/json"
+
+	"github.com/pocketbase/dbx"
+	"github.com/pocketbase/pocketbase/daos"
+	m "github.com/pocketbase/pocketbase/migrations"
+	"github.com/pocketbase/pocketbase/models"
+)
+
+func init() {
+	m.Register(func(db dbx.Builder) error {
+		jsonData := ` + "`%s`" + `
+
+		collections := []*models.Collection{}
+		if err := json.Unmarshal([]byte(jsonData), &collections); err != nil {
+			return err
+		}
+
+		return daos.New(db).ImportCollections(collections, true, nil)
+	}, func(db dbx.Builder) error {
+		return nil
+	})
+}
+`
+	return fmt.Sprintf(template, filepath.Base(p.options.Dir), string(jsonData)), nil
+}