package grpc

import (
	userv1 "hyapp/api/proto/user/v1"
	authdomain "hyapp/services/user-service/internal/domain/auth"
	userdomain "hyapp/services/user-service/internal/domain/user"
	authservice "hyapp/services/user-service/internal/service/auth"
)

// toProtoToken 把领域令牌转换为 protobuf 响应。
func toProtoToken(token authdomain.Token) *userv1.AuthToken {
	return &userv1.AuthToken{
		UserId:                   token.UserID,
		DisplayUserId:            token.DisplayUserID,
		DefaultDisplayUserId:     token.DefaultDisplayUserID,
		DisplayUserIdKind:        token.DisplayUserIDKind,
		DisplayUserIdExpiresAtMs: token.DisplayUserIDExpiresAtMs,
		SessionId:                token.SessionID,
		AccessToken:              token.AccessToken,
		RefreshToken:             token.RefreshToken,
		ExpiresInSec:             token.ExpiresInSec,
		TokenType:                token.TokenType,
	}
}

// toProtoUser 把领域用户转换为 protobuf 用户投影。
func toProtoUser(user userdomain.User) *userv1.User {
	return &userv1.User{
		UserId:                   user.UserID,
		Status:                   toProtoStatus(user.Status),
		CreatedAtMs:              user.CreatedAtMs,
		UpdatedAtMs:              user.UpdatedAtMs,
		DisplayUserId:            user.CurrentDisplayUserID,
		DefaultDisplayUserId:     user.DefaultDisplayUserID,
		DisplayUserIdKind:        string(user.CurrentDisplayUserIDKind),
		DisplayUserIdExpiresAtMs: user.CurrentDisplayUserIDExpiresAtMs,
	}
}

// toProtoIdentity 把短号领域投影转换为 protobuf 响应。
func toProtoIdentity(identity userdomain.Identity) *userv1.UserIdentity {
	return &userv1.UserIdentity{
		UserId:                   identity.UserID,
		DisplayUserId:            identity.DisplayUserID,
		Status:                   string(identity.Status),
		DefaultDisplayUserId:     identity.DefaultDisplayUserID,
		DisplayUserIdKind:        string(identity.DisplayUserIDKind),
		DisplayUserIdExpiresAtMs: identity.DisplayUserIDExpiresAtMs,
	}
}

// toProtoStatus 固定未知状态的安全默认值。
func toProtoStatus(status userdomain.Status) userv1.UserStatus {
	switch status {
	case userdomain.StatusActive:
		return userv1.UserStatus_USER_STATUS_ACTIVE
	case userdomain.StatusDisabled:
		return userv1.UserStatus_USER_STATUS_DISABLED
	case userdomain.StatusBanned:
		return userv1.UserStatus_USER_STATUS_BANNED
	default:
		return userv1.UserStatus_USER_STATUS_UNSPECIFIED
	}
}

// authMeta 提取认证链路审计所需的 gateway 透传字段。
func authMeta(meta *userv1.RequestMeta) authservice.Meta {
	if meta == nil {
		return authservice.Meta{}
	}

	return authservice.Meta{
		RequestID: meta.GetRequestId(),
		ClientIP:  meta.GetClientIp(),
		UserAgent: meta.GetUserAgent(),
	}
}