feat: sql, migrations, sql postgress db setup, movie model

projects/greenlight/internal/data/models.go

@@ -0,0 +1,27 @@
+package data
+
+import (
+	"database/sql"
+	"errors"
+)
+
+// Define a custom ErrRecordNotFound error. We'll return this from our Get() method when
+// looking up a movie that doesn't exist in our database.
+var (
+	ErrRecordNotFound = errors.New("record not found")
+)
+
+// Create a Models struct which wraps the MovieModel. We'll add other models to this,
+// like a UserModel and PermissionModel, as our build progresses.
+type Models struct {
+	Movies MovieModel
+}
+
+// For ease of use, we also add a New()
+// method which returns a Models struct containing
+// the initialized MovieModel.
+func NewModels(db *sql.DB) Models {
+	return Models{
+		Movies: MovieModel{DB: db},
+	}
+}