refactor(layout): consolidate backend codebase into backend/ package and clean root directory

- Moved cmd/, core/, plugins/, pkg/, downstream/, and main.go into backend/ directory - Batch updated all Go source files to import github.com/Rain-kl/Wavelet/backend/... - Updated Makefile, scripts/swagger.sh, architecture guards, and platform skills - Passed all quality gates (100% tests, 0 lint issues, clean build)
2026-10-08 16:46:37 +08:00 · 2026-08-28 12:56:02 +08:00
parent 33b38f8687
commit 43dc97e48c
319 changed files with 912 additions and 1031 deletions
@@ -0,0 +1,100 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+// Package contracts defines unified service interfaces and DTOs for cross-plugin communication.
+package contracts
+
+import (
+	"context"
+	"time"
+)
+
+// UserDTO represents a unified user data transfer object across plugins.
+type UserDTO struct {
+	ID                 uint64    `json:"id,string"`
+	Username           string    `json:"username"`
+	Nickname           string    `json:"nickname"`
+	Email              string    `json:"email"`
+	AvatarURL          string    `json:"avatar_url"`
+	IsActive           bool      `json:"is_active"`
+	IsAdmin            bool      `json:"is_admin"`
+	NeedChangePassword bool      `json:"need_change_password,omitempty"`
+	Bio                string    `json:"bio,omitempty"`
+	Phone              string    `json:"phone,omitempty"`
+	Gender             string    `json:"gender,omitempty"`
+	Website            string    `json:"website,omitempty"`
+	Location           string    `json:"location,omitempty"`
+	LastLoginAt        time.Time `json:"last_login_at"`
+	CreatedAt          time.Time `json:"created_at"`
+	UpdatedAt          time.Time `json:"updated_at"`
+}
+
+// TableName returns w_users.
+func (UserDTO) TableName() string {
+	return "w_users"
+}
+
+// OAuthUserInfoDTO contains user identity claims obtained from an OAuth provider.
+type OAuthUserInfoDTO struct {
+	ID                uint64 `json:"id"`
+	Sub               string `json:"sub"`
+	Username          string `json:"username"`
+	PreferredUsername string `json:"preferred_username"`
+	Email             string `json:"email"`
+	Name              string `json:"name"`
+	Active            bool   `json:"active"`
+	AvatarURL         string `json:"avatar_url"`
+}
+
+// OAuthProvider defines the pluggable OAuth provider contract.
+type OAuthProvider interface {
+	Name() string
+	GetAuthURL(state string) string
+	ExchangeCode(ctx context.Context, code string) (*OAuthUserInfoDTO, error)
+}
+
+// AuthService defines the contract for authentication, session verification, and token management.
+type AuthService interface {
+	// RequireAuthMiddleware returns a middleware handler (compatible with gin.HandlerFunc or standard middleware).
+	RequireAuthMiddleware() any
+
+	// RequireAdminMiddleware returns an admin authorization middleware.
+	RequireAdminMiddleware() any
+
+	// GetCurrentUser retrieves the authenticated UserDTO from context.
+	GetCurrentUser(ctx context.Context) (*UserDTO, error)
+
+	// GetCurrentUserID retrieves the authenticated user ID from session/context.
+	GetCurrentUserID(ctx context.Context) (uint64, error)
+
+	// VerifyToken validates an access token and returns the associated user DTO.
+	VerifyToken(ctx context.Context, token string) (*UserDTO, error)
+
+	// CreateSession establishes an authenticated session for the given user ID.
+	CreateSession(ctx context.Context, userID uint64, extras map[string]any) (string, error)
+
+	// RevokeToken invalidates a specific access token by its hash.
+	RevokeToken(ctx context.Context, tokenHash string) error
+
+	// RevokeUserSessions revokes all active sessions and cached tokens for a user.
+	RevokeUserSessions(ctx context.Context, userID uint64) error
+
+	// DisallowTokenAuthMiddleware returns a middleware that rejects requests authenticated via access token.
+	DisallowTokenAuthMiddleware() any
+}
+
+// AuthRegistry allows downstream and domain plugins to register custom authentication providers.
+type AuthRegistry interface {
+	RegisterOAuthProvider(name string, provider OAuthProvider)
+	GetOAuthProvider(name string) (OAuthProvider, bool)
+	ListOAuthProviders() []string
+}
+
+// Auth context keys — stored in Gin context by auth middleware, consumed by domain plugins.
+const (
+	AuthUserIDKey     = "user_id"
+	AuthUserNameKey   = "username"
+	AuthUserObjKey    = "user_obj"
+	AuthTokenAuthKey  = "token_auth"  // marks if request uses access token auth
+	AuthTokenAdminKey = "token_admin" // whether the access token has admin privileges
+)