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use thiserror::Error;

/// Result type for http signature
pub type HttpSigResult<T> = std::result::Result<T, HttpSigError>;

/// Error type for http signature
#[derive(Error, Debug)]
pub enum HttpSigError {
  #[error("Base64 decode error: {0}")]
  Base64DecodeError(#[from] base64::DecodeError),

  /* ----- Crypto errors ----- */
  /// Invalid private key for asymmetric algorithm
  #[error("Failed to parse private key: {0}")]
  ParsePrivateKeyError(String),
  /// Invalid public key for asymmetric algorithm
  #[error("Failed to parse public key: {0}")]
  ParsePublicKeyError(String),
  /// Signature parse error
  #[error("Failed to parse signature: {0}")]
  ParseSignatureError(String),
  /// Invalid Signature
  #[error("Invalid Signature: {0}")]
  InvalidSignature(String),

  /* ----- Component errors ----- */
  /// Failed to parse structured field value
  #[error("Failed to parse structured field value: {0}")]
  ParseSFVError(String),
  /// Invalid http message component name
  #[error("Invalid http message component name: {0}")]
  InvalidComponentName(String),
  /// Invalid http message component param
  #[error("Invalid http message component param: {0}")]
  InvalidComponentParam(String),
  /// Invalid http message component id
  #[error("Invalid http message component id: {0}")]
  InvalidComponentId(String),
  /// Invalid http message component
  #[error("Invalid http message component: {0}")]
  InvalidComponent(String),

  /* ----- Signature params errors ----- */
  /// Invalid signature params
  #[error("Invalid signature params: {0}")]
  InvalidSignatureParams(String),

  /// Error in building signature header
  #[error("Failed to build signature header: {0}")]
  BuildSignatureHeaderError(String),

  /// Error in building signature base
  #[error("Failed to build signature base: {0}")]
  BuildSignatureBaseError(String),

  /// Expired signature params
  #[error("Expired signature params: {0}")]
  ExpiredSignatureParams(String),

  /* ----- Other errors ----- */
  /// NotYetImplemented
  #[error("Not yet implemented: {0}")]
  NotYetImplemented(String),
}