oauth2

type AccessTokenStorage interface {
	CreateAccessTokenSession(ctx context.Context, signature string, request fosite.Requester) (err error)

	GetAccessTokenSession(ctx context.Context, signature string, session interface{}) (request fosite.Requester, err error)

	DeleteAccessTokenSession(ctx context.Context, signature string) (err error)
}

type AccessTokenStrategy interface {
	AccessTokenSignature(token string) string
	GenerateAccessToken(ctx context.Context, requester fosite.Requester) (token string, signature string, err error)
	ValidateAccessToken(ctx context.Context, requester fosite.Requester, token string) (err error)
}

type AuthorizeCodeGrantStorage interface {
	AuthorizeCodeStorage

	PersistAuthorizeCodeGrantSession(ctx context.Context, authorizeCode, accessSignature, refreshSignature string, request fosite.Requester) error
}

type AuthorizeCodeStorage interface {
	CreateAuthorizeCodeSession(ctx context.Context, code string, request fosite.Requester) (err error)

	GetAuthorizeCodeSession(ctx context.Context, code string, session interface{}) (request fosite.Requester, err error)

	DeleteAuthorizeCodeSession(ctx context.Context, code string) (err error)
}

type AuthorizeCodeStrategy interface {
	AuthorizeCodeSignature(token string) string
	GenerateAuthorizeCode(ctx context.Context, requester fosite.Requester) (token string, signature string, err error)
	ValidateAuthorizeCode(ctx context.Context, requester fosite.Requester, token string) (err error)
}

type AuthorizeExplicitGrantHandler struct {
	AccessTokenStrategy   AccessTokenStrategy
	RefreshTokenStrategy  RefreshTokenStrategy
	AuthorizeCodeStrategy AuthorizeCodeStrategy

	// AuthorizeCodeGrantStorage is used to persist session data across requests.
	AuthorizeCodeGrantStorage AuthorizeCodeGrantStorage

	// AuthCodeLifespan defines the lifetime of an authorize code.
	AuthCodeLifespan time.Duration

	// AccessTokenLifespan defines the lifetime of an access token.
	AccessTokenLifespan time.Duration

	ScopeStrategy fosite.ScopeStrategy
}

type AuthorizeImplicitGrantTypeHandler struct {
	AccessTokenStrategy AccessTokenStrategy

	// ImplicitGrantStorage is used to persist session data across requests.
	AccessTokenStorage AccessTokenStorage

	// AccessTokenLifespan defines the lifetime of an access token.
	AccessTokenLifespan time.Duration

	ScopeStrategy fosite.ScopeStrategy
}

type ClientCredentialsGrantHandler struct {
	*HandleHelper
	ScopeStrategy fosite.ScopeStrategy
}

type ClientCredentialsGrantStorage interface {
	AccessTokenStorage
}

type CoreStorage interface {
	AuthorizeCodeStorage
	AccessTokenStorage
	RefreshTokenStorage
}

type CoreStrategy interface {
	AccessTokenStrategy
	RefreshTokenStrategy
	AuthorizeCodeStrategy
}

type CoreValidator struct {
	CoreStrategy
	CoreStorage
	ScopeStrategy fosite.ScopeStrategy
}

type HMACSHAStrategy struct {
	Enigma                *enigma.HMACStrategy
	AccessTokenLifespan   time.Duration
	AuthorizeCodeLifespan time.Duration
}

type HMACSession struct {
	AccessTokenExpiry   time.Time
	AuthorizeCodeExpiry time.Time
}

type HMACSessionContainer interface {
	// AccessTokenExpiresAt returns the access token's expiry.
	AccessTokenExpiresAt(fallback time.Time) time.Time

	// AccessTokenExpiresAt returns the authorize code's expiry.
	AuthorizeCodeExpiresAt(fallback time.Time) time.Time
}

type HandleHelper struct {
	AccessTokenStrategy AccessTokenStrategy
	AccessTokenStorage  AccessTokenStorage
	AccessTokenLifespan time.Duration
}

type ImplicitGrantStorage interface {
	CreateImplicitAccessTokenSession(ctx context.Context, token string, request fosite.Requester) (err error)
}

type JWTSession struct {
	JWTClaims *jwt.JWTClaims
	JWTHeader *jwt.Headers
}

type JWTSessionContainer interface {
	// GetJWTClaims returns the claims.
	GetJWTClaims() *jwt.JWTClaims

	// GetJWTHeader returns the header.
	GetJWTHeader() *jwt.Headers
}

type RS256JWTStrategy struct {
	*jwt.RS256JWTStrategy
}

type RefreshTokenGrantHandler struct {
	AccessTokenStrategy AccessTokenStrategy

	RefreshTokenStrategy RefreshTokenStrategy

	// RefreshTokenGrantStorage is used to persist session data across requests.
	RefreshTokenGrantStorage RefreshTokenGrantStorage

	// AccessTokenLifespan defines the lifetime of an access token.
	AccessTokenLifespan time.Duration
}

type RefreshTokenGrantStorage interface {
	RefreshTokenStorage
	PersistRefreshTokenGrantSession(ctx context.Context, requestRefreshSignature, accessSignature, refreshSignature string, request fosite.Requester) error
}

type RefreshTokenStorage interface {
	CreateRefreshTokenSession(ctx context.Context, signature string, request fosite.Requester) (err error)

	GetRefreshTokenSession(ctx context.Context, signature string, session interface{}) (request fosite.Requester, err error)

	DeleteRefreshTokenSession(ctx context.Context, signature string) (err error)
}

type RefreshTokenStrategy interface {
	RefreshTokenSignature(token string) string
	GenerateRefreshToken(ctx context.Context, requester fosite.Requester) (token string, signature string, err error)
	ValidateRefreshToken(ctx context.Context, requester fosite.Requester, token string) (err error)
}

type ResourceOwnerPasswordCredentialsGrantHandler struct {
	// ResourceOwnerPasswordCredentialsGrantStorage is used to persist session data across requests.
	ResourceOwnerPasswordCredentialsGrantStorage ResourceOwnerPasswordCredentialsGrantStorage

	ScopeStrategy fosite.ScopeStrategy

	*HandleHelper
}

type ResourceOwnerPasswordCredentialsGrantStorage interface {
	Authenticate(ctx context.Context, name string, secret string) error
	AccessTokenStorage
}