//
// Copyright (C) 2024 veypi <i@veypi.com>
// 2025-07-24 15:27:31
// Distributed under terms of the MIT license.
//

package oauth

import "time"

// OAuth 2.0 相关常量
const (
	// Grant Types
	GrantTypeAuthorizationCode = "authorization_code"
	GrantTypeRefreshToken      = "refresh_token"
	GrantTypeClientCredentials = "client_credentials"
	GrantTypePassword          = "password"
	GrantTypeImplicit          = "implicit"

	// Response Types
	ResponseTypeCode  = "code"
	ResponseTypeToken = "token"

	// Token Types
	TokenTypeBearer = "Bearer"

	// PKCE Challenge Methods
	CodeChallengeMethodPlain = "plain"
	CodeChallengeMethodS256  = "S256"

	// Default Scopes
	ScopeRead    = "read"
	ScopeWrite   = "write"
	ScopeProfile = "profile"
	ScopeEmail   = "email"
	ScopePhone   = "phone"
	ScopeAdmin   = "admin"

	// Token 生存时间
	DefaultAuthorizationCodeExpiry = 10 * time.Minute    // 授权码10分钟过期
	DefaultAccessTokenExpiry       = 1 * time.Hour       // 访问令牌1小时过期
	DefaultRefreshTokenExpiry      = 30 * 24 * time.Hour // 刷新令牌30天过期
	DefaultSessionExpiry           = 24 * time.Hour      // 会话24小时过期

	// Error Codes (RFC 6749)
	ErrorInvalidRequest          = "invalid_request"
	ErrorInvalidClient           = "invalid_client"
	ErrorInvalidGrant            = "invalid_grant"
	ErrorUnauthorizedClient      = "unauthorized_client"
	ErrorUnsupportedGrantType    = "unsupported_grant_type"
	ErrorInvalidScope            = "invalid_scope"
	ErrorAccessDenied            = "access_denied"
	ErrorUnsupportedResponseType = "unsupported_response_type"
	ErrorServerError             = "server_error"
	ErrorTemporarilyUnavailable  = "temporarily_unavailable"

	// PKCE Error Codes (RFC 7636)
	ErrorInvalidGrant2 = "invalid_grant"

	// Token 类型
	UserTokenTypeAPI      = "api"      // API 令牌
	UserTokenTypeSession  = "session"  // 会话令牌
	UserTokenTypePersonal = "personal" // 个人访问令牌
)

// 默认作用域定义
var DefaultScopes = []struct {
	Name        string
	DisplayName string
	Description string
	IsDefault   bool
	IsSystem    bool
}{
	{
		Name:        ScopeProfile,
		DisplayName: "基本资料",
		Description: "访问您的基本资料信息，如用户名、昵称等",
		IsDefault:   true,
		IsSystem:    true,
	},
	{
		Name:        ScopeEmail,
		DisplayName: "邮箱地址",
		Description: "访问您的邮箱地址",
		IsDefault:   false,
		IsSystem:    true,
	},
	{
		Name:        ScopePhone,
		DisplayName: "手机号码",
		Description: "访问您的手机号码",
		IsDefault:   false,
		IsSystem:    true,
	},
	{
		Name:        ScopeRead,
		DisplayName: "读取权限",
		Description: "读取您的数据",
		IsDefault:   true,
		IsSystem:    false,
	},
	{
		Name:        ScopeWrite,
		DisplayName: "写入权限",
		Description: "修改您的数据",
		IsDefault:   false,
		IsSystem:    false,
	},
	{
		Name:        ScopeAdmin,
		DisplayName: "管理员权限",
		Description: "完全的管理员权限",
		IsDefault:   false,
		IsSystem:    true,
	},
}

// 预定义的第三方OAuth提供商
var DefaultOAuthProviders = []struct {
	Name        string
	DisplayName string
	AuthURL     string
	TokenURL    string
	UserInfoURL string
	Scope       string
}{
	{
		Name:        "github",
		DisplayName: "GitHub",
		AuthURL:     "https://github.com/login/oauth/authorize",
		TokenURL:    "https://github.com/login/oauth/access_token",
		UserInfoURL: "https://api.github.com/user",
		Scope:       "user:email",
	},
	{
		Name:        "google",
		DisplayName: "Google",
		AuthURL:     "https://accounts.google.com/o/oauth2/v2/auth",
		TokenURL:    "https://oauth2.googleapis.com/token",
		UserInfoURL: "https://www.googleapis.com/oauth2/v2/userinfo",
		Scope:       "openid profile email",
	},
	{
		Name:        "wechat",
		DisplayName: "微信",
		AuthURL:     "https://open.weixin.qq.com/connect/oauth2/authorize",
		TokenURL:    "https://api.weixin.qq.com/sns/oauth2/access_token",
		UserInfoURL: "https://api.weixin.qq.com/sns/userinfo",
		Scope:       "snsapi_userinfo",
	},
	{
		Name:        "dingtalk",
		DisplayName: "钉钉",
		AuthURL:     "https://oapi.dingtalk.com/connect/oauth2/sns_authorize",
		TokenURL:    "https://oapi.dingtalk.com/sns/gettoken",
		UserInfoURL: "https://oapi.dingtalk.com/sns/getuserinfo",
		Scope:       "snsapi_login",
	},
}