// Copyright 2015 Joyent, Inc.

var assert = require('assert-plus');
var util = require('util');

function FingerprintFormatError(fp, format) {
	if (Error.captureStackTrace)
		Error.captureStackTrace(this, FingerprintFormatError);
	this.name = 'FingerprintFormatError';
	this.fingerprint = fp;
	this.format = format;
	this.message = 'Fingerprint format is not supported, or is invalid: ';
	if (fp !== undefined)
		this.message += ' fingerprint = ' + fp;
	if (format !== undefined)
		this.message += ' format = ' + format;
}
util.inherits(FingerprintFormatError, Error);

function InvalidAlgorithmError(alg) {
	if (Error.captureStackTrace)
		Error.captureStackTrace(this, InvalidAlgorithmError);
	this.name = 'InvalidAlgorithmError';
	this.algorithm = alg;
	this.message = 'Algorithm "' + alg + '" is not supported';
}
util.inherits(InvalidAlgorithmError, Error);

function KeyParseError(name, format, innerErr) {
	if (Error.captureStackTrace)
		Error.captureStackTrace(this, KeyParseError);
	this.name = 'KeyParseError';
	this.format = format;
	this.keyName = name;
	this.innerErr = innerErr;
	this.message = 'Failed to parse ' + name + ' as a valid ' + format +
	    ' format key: ' + innerErr.message;
}
util.inherits(KeyParseError, Error);

function SignatureParseError(type, format, innerErr) {
	if (Error.captureStackTrace)
		Error.captureStackTrace(this, SignatureParseError);
	this.name = 'SignatureParseError';
	this.type = type;
	this.format = format;
	this.innerErr = innerErr;
	this.message = 'Failed to parse the given data as a ' + type +
	    ' signature in ' + format + ' format: ' + innerErr.message;
}
util.inherits(SignatureParseError, Error);

module.exports = {
	FingerprintFormatError: FingerprintFormatError,
	InvalidAlgorithmError: InvalidAlgorithmError,
	KeyParseError: KeyParseError,
	SignatureParseError: SignatureParseError
};
