add middlewares, handlers and database models

internal/model/file.go

@@ -0,0 +1,23 @@
+package model
+
+import (
+	"time"
+)
+
+const (
+	FileTypeAvatar = "avatar"
+)
+
+type File struct {
+	ID           string    `db:"id"`
+	UserID       string    `db:"user_id"`    // Who owns/created this file
+	OwnerType    string    `db:"owner_type"` // "user", "profile", etc. - the entity that owns the file
+	OwnerID      string    `db:"owner_id"`   // Polymorphic FK
+	Type         string    `db:"type"`
+	Filename     string    `db:"filename"`
+	OriginalName string    `db:"original_name"`
+	MimeType     string    `db:"mime_type"`
+	Size         int64     `db:"size"`
+	StoragePath  string    `db:"storage_path"`
+	CreatedAt    time.Time `db:"created_at"`
+}