init

internal/core/domain/errors.go

@@ -0,0 +1,16 @@
+package domain
+
+import "errors"
+
+var (
+	ErrInternal                   = errors.New("internal error")
+	ErrConflictingData            = errors.New("data conflicts with existing data in unique column")
+	ErrDataNotFound               = errors.New("data not found")
+	ErrInvalidEmailCredentials    = errors.New("invalid email or password")
+	ErrInvalidUsernameCredentials = errors.New("invalid username or password")
+	ErrTokenCreation              = errors.New("error creating token")
+	ErrExpiredToken               = errors.New("access token has expired")
+	ErrUsernameExists             = errors.New("username already exists")
+	ErrEmailExists                = errors.New("email already exists")
+	ErrInvalidToken               = errors.New("invalid token")
+)

internal/core/domain/message.go

@@ -0,0 +1,20 @@
+package domain
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type Message struct {
+	UserID    uuid.UUID
+	ChatID    string
+	Content   string
+	Type      string
+	Timestamp time.Time
+}
+
+type StreamMessage struct {
+	*Message
+	Commit func() error
+}

internal/core/domain/token.go

@@ -0,0 +1,7 @@
+package domain
+
+import "github.com/google/uuid"
+
+type AuthPayload struct {
+	UserID uuid.UUID
+}

internal/core/domain/user.go

@@ -0,0 +1,14 @@
+package domain
+
+import (
+	"github.com/google/uuid"
+)
+
+type User struct {
+	ID       uuid.UUID
+	Username string
+	Email    string
+	Password string
+	// CreatedAt time.Time
+	// UpdatedAt time.Time
+}