refactor(auth): modularize auth plugin with physical subpackages and decoupled services

backend/plugins/domain/auth/model/dto/auth_source.go

@@ -0,0 +1,45 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+// Package dto provides data transfer objects and views for the auth plugin.
+package dto
+
+// AuthSourceView 登录源展示信息
+type AuthSourceView struct {
+	ID                     uint64 `json:"id"`
+	Name                   string `json:"name"`
+	Type                   string `json:"type"`
+	DisplayName            string `json:"display_name"`
+	IsActive               bool   `json:"is_active"`
+	IconURL                string `json:"icon_url"`
+	ClientSecretConfigured bool   `json:"client_secret_configured"`
+}
+
+// OAuthAuthorizeResponse 授权 URL 响应
+type OAuthAuthorizeResponse struct {
+	AuthorizeURL string `json:"authorize_url"`
+}
+
+// OAuthCallbackResult 回调处理结果
+type OAuthCallbackResult struct {
+	Status string         `json:"status"`
+	User   *BasicUserInfo `json:"user,omitempty"`
+}
+
+// CallbackRequest OAuth 回调请求参数
+type CallbackRequest struct {
+	State string `json:"state" binding:"required"`
+	Code  string `json:"code" binding:"required"`
+}
+
+// ExternalAccountView 外部帐号绑定视图（脱敏展示用）
+type ExternalAccountView struct {
+	ID               uint64 `json:"id"`
+	AuthSourceID     uint64 `json:"auth_source_id"`
+	AuthSourceName   string `json:"auth_source_name"`
+	AuthSourceType   string `json:"auth_source_type"`
+	AuthSourceLabel  string `json:"auth_source_label"`
+	ExternalUsername string `json:"external_username"`
+	Email            string `json:"email"`
+	CreatedAt        string `json:"created_at"`
+}

backend/plugins/domain/auth/model/dto/cap.go

@@ -0,0 +1,32 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+// Package dto provides data transfer objects and views for the auth plugin.
+package dto
+
+import (
+	"Wavelet/plugins/domain/auth/pow"
+)
+
+// ChallengeResponse is a local type alias for the pow.ChallengeResponse struct
+type ChallengeResponse = pow.ChallengeResponse
+
+// ChallengeRequest is the CAPTCHA challenge request payload.
+type ChallengeRequest struct {
+	Scope string `json:"scope" form:"scope"`
+}
+
+// RedeemRequest is the CAPTCHA redeem request payload.
+type RedeemRequest struct {
+	Token     string `json:"token" binding:"required"`
+	Solutions []int  `json:"solutions" binding:"required"`
+	Scope     string `json:"scope" form:"scope"`
+}
+
+// RedeemResponse is returned to the client on redeem.
+type RedeemResponse struct {
+	Success bool   `json:"success"`
+	Token   string `json:"token,omitempty"`
+	Expires int64  `json:"expires,omitempty"`
+	Error   string `json:"error,omitempty"`
+}

backend/plugins/domain/auth/model/dto/user_info.go

@@ -0,0 +1,84 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+// Package dto provides data transfer objects and views for the auth plugin.
+package dto
+
+import (
+	"Wavelet/core/contracts"
+	"strconv"
+)
+
+// BasicUserInfo 用户基本信息结构体
+type BasicUserInfo struct {
+	ID                 uint64 `json:"id,string"`
+	Username           string `json:"username"`
+	Nickname           string `json:"nickname"`
+	Email              string `json:"email"`
+	AvatarURL          string `json:"avatar_url"`
+	IsAdmin            bool   `json:"is_admin"`
+	NeedChangePassword bool   `json:"need_change_password"`
+	Bio                string `json:"bio"`
+	Phone              string `json:"phone"`
+	Gender             string `json:"gender"`
+	Website            string `json:"website"`
+	Location           string `json:"location"`
+}
+
+// BuildBasicUserInfo 将 UserDTO 转换为 BasicUserInfo
+func BuildBasicUserInfo(user *contracts.UserDTO, needChange bool) BasicUserInfo {
+	if user == nil {
+		return BasicUserInfo{}
+	}
+	return BasicUserInfo{
+		ID:                 user.ID,
+		Username:           user.Username,
+		Nickname:           user.Nickname,
+		Email:              user.Email,
+		AvatarURL:          user.AvatarURL,
+		IsAdmin:            user.IsAdmin,
+		NeedChangePassword: needChange || user.NeedChangePassword,
+		Bio:                user.Bio,
+		Phone:              user.Phone,
+		Gender:             user.Gender,
+		Website:            user.Website,
+		Location:           user.Location,
+	}
+}
+
+// LoginRequiredAuditLog 审计日志结构体
+type LoginRequiredAuditLog struct {
+	UserID     uint64 `json:"user_id"`
+	Username   string `json:"username"`
+	ClientIP   string `json:"client_ip"`
+	Method     string `json:"method"`
+	Path       string `json:"path"`
+	RequestURI string `json:"request_uri"`
+	UserAgent  string `json:"user_agent"`
+	Referer    string `json:"referer"`
+}
+
+// ParseUserID parses a string, int, or float64 user ID representation.
+func ParseUserID(v any) uint64 {
+	switch val := v.(type) {
+	case uint64:
+		return val
+	case int64:
+		if val > 0 {
+			return uint64(val)
+		}
+	case int:
+		if val > 0 {
+			return uint64(val)
+		}
+	case float64:
+		if val > 0 {
+			return uint64(val)
+		}
+	case string:
+		if id, err := strconv.ParseUint(val, 10, 64); err == nil {
+			return id
+		}
+	}
+	return 0
+}