/*!
 * oids - OIDs encoding for javascript
 * Copyright (c) 2018-2019, Christopher Jeffrey (MIT License).
 * https://github.com/bcoin-org/bcrypto
 *
 * Parts of this software are based on golang/go:
 *   Copyright (c) 2009, The Go Authors. All rights reserved.
 *   https://github.com/golang/go
 *
 * Resources:
 *   https://www.ietf.org/rfc/rfc2459.txt
 *   https://tools.ietf.org/html/rfc3279
 *   http://oid-info.com/get/1.2.840.10040.4
 *   http://oid-info.com/get/1.2.840.113549.1.1
 *   http://oid-info.com/get/1.2.840.10045.4.3
 *   https://tools.ietf.org/html/draft-jivsov-openpgp-sha3-01
 *   https://github.com/golang/go/blob/master/src/crypto/x509/x509.go
 *   https://github.com/golang/go/blob/master/src/crypto/x509/pkix/pkix.go
 *   https://tools.ietf.org/html/draft-josefsson-pkix-eddsa-01
 *   https://tools.ietf.org/html/rfc5480
 *   https://tools.ietf.org/html/draft-josefsson-pkix-newcurves-00
 *   https://tools.ietf.org/id/draft-ietf-curdle-pkix-06.html
 *   https://tools.ietf.org/html/rfc7693
 */

const NONE = '0.0';

const attrs = {
  COUNTRY: '2.5.4.6',
  ORGANIZATION: '2.5.4.10',
  ORGANIZATIONALUNIT: '2.5.4.11',
  COMMONNAME: '2.5.4.3',
  SERIALNUMBER: '2.5.4.5',
  LOCALITY: '2.5.4.7',
  PROVINCE: '2.5.4.8',
  STREETADDRESS: '2.5.4.9',
  POSTALCODE: '2.5.4.17',
  EMAIL: '1.2.840.113549.1.9',
};

const attrsByVal = {
  [attrs.COUNTRY]: 'COUNTRY',
  [attrs.ORGANIZATION]: 'ORGANIZATION',
  [attrs.ORGANIZATIONALUNIT]: 'ORGANIZATIONALUNIT',
  [attrs.COMMONNAME]: 'COMMONNAME',
  [attrs.SERIALNUMBER]: 'SERIALNUMBER',
  [attrs.LOCALITY]: 'LOCALITY',
  [attrs.PROVINCE]: 'PROVINCE',
  [attrs.STREETADDRESS]: 'STREETADDRESS',
  [attrs.POSTALCODE]: 'POSTALCODE'
};

const keyAlgs = {
  DH: '1.2.840.113549.1.3.1',
  DSA: '1.2.840.10040.4.1',
  DSA_ALT: '1.2.840.10040.4.2',
  RSA: '1.2.840.113549.1.1.1',
  ECDSA: '1.2.840.10045.2.1',
  EDDSA: '1.3.6.1.4.1.11591.4.12.1'
};

const keyAlgsByVal = {
  [keyAlgs.DH]: 'DH',
  [keyAlgs.DSA]: 'DSA',
  [keyAlgs.DSA_ALT]: 'DSA',
  [keyAlgs.RSA]: 'RSA',
  [keyAlgs.ECDSA]: 'ECDSA',
  [keyAlgs.EDDSA]: 'EDDSA'
};

const hashes = {
  BLAKE2B160: '1.3.6.1.4.1.1722.12.2.1.5',
  BLAKE2B256: '1.3.6.1.4.1.1722.12.2.1.8',
  BLAKE2B384: '1.3.6.1.4.1.1722.12.2.1.12',
  BLAKE2B512: '1.3.6.1.4.1.1722.12.2.1.16',
  BLAKE2S128: '1.3.6.1.4.1.1722.12.2.2.4',
  BLAKE2S160: '1.3.6.1.4.1.1722.12.2.2.5',
  BLAKE2S224: '1.3.6.1.4.1.1722.12.2.2.7',
  BLAKE2S256: '1.3.6.1.4.1.1722.12.2.2.8',
  GOST94: '1.2.643.2.2.20',
  MD2: '1.2.840.113549.2.2',
  MD4: '1.2.840.113549.2.4',
  MD5: '1.2.840.113549.2.5',
  MDC2: '1.3.14.3.2.19',
  RIPEMD160: '1.0.10118.3.0.49',
  RIPEMD160_ALT: '1.3.36.3.2.1',
  SHA1: '1.3.14.3.2.26',
  SHA224: '2.16.840.1.101.3.4.2.4',
  SHA256: '2.16.840.1.101.3.4.2.1',
  SHA384: '2.16.840.1.101.3.4.2.2',
  SHA512: '2.16.840.1.101.3.4.2.3',
  SHA3_224: '2.16.840.1.101.3.4.2.7',
  SHA3_256: '2.16.840.1.101.3.4.2.8',
  SHA3_384: '2.16.840.1.101.3.4.2.9',
  SHA3_512: '2.16.840.1.101.3.4.2.10',
  SHAKE128: '2.16.840.1.101.3.4.2.11',
  SHAKE256: '2.16.840.1.101.3.4.2.12',
  SM3: '1.0.10118.3.0.65',
  WHIRLPOOL: '1.0.10118.3.0.55'
};

const hashesByVal = {
  [hashes.BLAKE2B160]: 'BLAKE2B160',
  [hashes.BLAKE2B256]: 'BLAKE2B256',
  [hashes.BLAKE2B384]: 'BLAKE2B384',
  [hashes.BLAKE2B512]: 'BLAKE2B512',
  [hashes.BLAKE2S128]: 'BLAKE2S128',
  [hashes.BLAKE2S160]: 'BLAKE2S160',
  [hashes.BLAKE2S224]: 'BLAKE2S224',
  [hashes.BLAKE2S256]: 'BLAKE2S256',
  [hashes.GOST94]: 'GOST94',
  [hashes.MD2]: 'MD2',
  [hashes.MD4]: 'MD4',
  [hashes.MD5]: 'MD5',
  [hashes.MDC2]: 'MDC2',
  [hashes.RIPEMD160]: 'RIPEMD160',
  [hashes.RIPEMD160_ALT]: 'RIPEMD160',
  [hashes.SHA1]: 'SHA1',
  [hashes.SHA224]: 'SHA224',
  [hashes.SHA256]: 'SHA256',
  [hashes.SHA384]: 'SHA384',
  [hashes.SHA512]: 'SHA512',
  [hashes.SHA3_224]: 'SHA3_224',
  [hashes.SHA3_256]: 'SHA3_256',
  [hashes.SHA3_384]: 'SHA3_384',
  [hashes.SHA3_512]: 'SHA3_512',
  [hashes.SHAKE128]: 'SHAKE128',
  [hashes.SHAKE256]: 'SHAKE256',
  [hashes.SM3]: 'SM3',
  [hashes.WHIRLPOOL]: 'WHIRLPOOL'
};

const curves = {
  P192: '1.2.840.10045.3.1.1',
  P224: '1.3.132.0.33',
  P256: '1.2.840.10045.3.1.7',
  P384: '1.3.132.0.34',
  P521: '1.3.132.0.35',
  SECP192K1: '1.3.132.0.31',
  SECP224K1: '1.3.132.0.32',
  SECP256K1: '1.3.132.0.10',
  BRAINPOOLP256: '1.3.36.3.3.2.8.1.1.7',
  BRAINPOOLP384: '1.3.36.3.3.2.8.1.1.11',
  BRAINPOOLP512: '1.3.36.3.3.2.8.1.1.13',
  X25519: '1.3.101.110',
  X25519_ALT: '1.3.6.1.4.1.11591.7',
  ED25519: '1.3.101.112',
  X448: '1.3.101.111',
  X448_ALT: '1.3.6.1.4.1.11591.8',
  ED448: '1.3.101.113',
  // Non-standard, but officially registered:
  // See: https://github.com/weidai11/cryptopp/issues/67#issuecomment-162191213
  ED1174: '1.3.6.1.4.1.9509.5.2.6',
  ED41417: '1.3.6.1.4.1.9509.5.2.5',
  M221: '1.3.6.1.4.1.9509.5.1.1',
  E222: '1.3.6.1.4.1.9509.5.2.1',
  M383: '1.3.6.1.4.1.9509.5.1.2',
  E382: '1.3.6.1.4.1.9509.5.2.2',
  M511: '1.3.6.1.4.1.9509.5.1.3',
  E521: '1.3.6.1.4.1.9509.5.2.4'
};

const curvesByVal = {
  [curves.P192]: 'P192',
  [curves.P224]: 'P224',
  [curves.P256]: 'P256',
  [curves.P384]: 'P384',
  [curves.P521]: 'P521',
  [curves.SECP192K1]: 'SECP192K1',
  [curves.SECP224K1]: 'SECP224K1',
  [curves.SECP256K1]: 'SECP256K1',
  [curves.BRAINPOOLP256]: 'BRAINPOOLP256',
  [curves.BRAINPOOLP384]: 'BRAINPOOLP384',
  [curves.BRAINPOOLP512]: 'BRAINPOOLP512',
  [curves.X25519]: 'X25519',
  [curves.X25519_ALT]: 'X25519',
  [curves.ED25519]: 'ED25519',
  [curves.X448]: 'X448',
  [curves.X448_ALT]: 'X448',
  [curves.ED448]: 'ED448',
  [curves.ED1174]: 'ED1174',
  [curves.ED41417]: 'ED41417',
  [curves.M221]: 'M221',
  [curves.E222]: 'E222',
  [curves.M383]: 'M383',
  [curves.E382]: 'E382',
  [curves.M511]: 'M511',
  [curves.E521]: 'E521'
};

const sigAlgs = {
  DSASHA1: '1.2.840.10040.4.3',
  RSAMD2: '1.2.840.113549.1.1.2',
  RSAMD4: '1.2.840.113549.1.1.3',
  RSAMD5: '1.2.840.113549.1.1.4',
  RSASHA1: '1.2.840.113549.1.1.5',
  RSASHA1_MS: '1.3.14.3.2.29',
  RSAPSS: '1.2.840.113549.1.1.10',
  RSASHA256: '1.2.840.113549.1.1.11',
  RSASHA384: '1.2.840.113549.1.1.12',
  RSASHA512: '1.2.840.113549.1.1.13',
  RSASHA224: '1.2.840.113549.1.1.14',
  MGF1: '1.2.840.113549.1.1.8',
  RSASHA3_256: '2.16.840.1.101.3.4.2.8',
  RSASHA3_384: '2.16.840.1.101.3.4.2.9',
  RSASHA3_512: '2.16.840.1.101.3.4.2.10',
  ECDSASHA1: '1.2.840.10045.4.1',
  ECDSASHA224: '1.2.840.10045.4.3.1',
  ECDSASHA256: '1.2.840.10045.4.3.2',
  ECDSASHA384: '1.2.840.10045.4.3.3',
  ECDSASHA512: '1.2.840.10045.4.3.4',
  EDDSA: '1.3.6.1.4.1.11591.4.12.2'
};

const sigAlgsByVal = {
  [sigAlgs.DSASHA1]: 'DSASHA1',
  [sigAlgs.RSAMD2]: 'RSAMD2',
  [sigAlgs.RSAMD4]: 'RSAMD4',
  [sigAlgs.RSAMD5]: 'RSAMD5',
  [sigAlgs.RSASHA1]: 'RSASHA1',
  [sigAlgs.RSASHA1_MS]: 'RSASHA1',
  [sigAlgs.RSAPSS]: 'RSAPSS',
  [sigAlgs.RSASHA256]: 'RSASHA256',
  [sigAlgs.RSASHA384]: 'RSASHA384',
  [sigAlgs.RSASHA512]: 'RSASHA512',
  [sigAlgs.MGF1]: 'MGF1',
  [sigAlgs.RSASHA3_256]: 'RSASHA3_256',
  [sigAlgs.RSASHA3_384]: 'RSASHA3_384',
  [sigAlgs.RSASHA3_512]: 'RSASHA3_512',
  [sigAlgs.ECDSASHA1]: 'ECDSASHA1',
  [sigAlgs.ECDSASHA224]: 'ECDSASHA224',
  [sigAlgs.ECDSASHA256]: 'ECDSASHA256',
  [sigAlgs.ECDSASHA384]: 'ECDSASHA384',
  [sigAlgs.ECDSASHA512]: 'ECDSASHA512',
  [sigAlgs.EDDSA]: 'EDDSA'
};

const sigToHash = {
  [sigAlgs.DSASHA1]: hashes.SHA1,
  [sigAlgs.RSAMD2]: hashes.MD2,
  [sigAlgs.RSAMD4]: hashes.MD4,
  [sigAlgs.RSAMD5]: hashes.MD5,
  [sigAlgs.RSASHA1]: hashes.SHA1,
  [sigAlgs.RSASHA1_MS]: hashes.SHA1,
  [sigAlgs.RSAPSS]: null,
  [sigAlgs.RSASHA256]: hashes.SHA256,
  [sigAlgs.RSASHA384]: hashes.SHA384,
  [sigAlgs.RSASHA512]: hashes.SHA512,
  [sigAlgs.MGF1]: null,
  [sigAlgs.RSASHA3_256]: hashes.SHA3_256,
  [sigAlgs.RSASHA3_384]: hashes.SHA3_384,
  [sigAlgs.RSASHA3_512]: hashes.SHA3_512,
  [sigAlgs.ECDSASHA1]: hashes.SHA1,
  [sigAlgs.ECDSASHA224]: hashes.SHA224,
  [sigAlgs.ECDSASHA256]: hashes.SHA256,
  [sigAlgs.ECDSASHA384]: hashes.SHA384,
  [sigAlgs.ECDSASHA512]: hashes.SHA512,
  [sigAlgs.EDDSA]: null
};

const exts = {
  NS_CERT_TYPE: '2.16.840.1.113730.1.1',
  KEY_ATTRIBUTES: '2.5.29.2', // obsolete, use .37 or .15
  KEY_USAGE_RESTRICTION: '2.5.29.4', // obsolete, use .37 or .15
  SUBTREES_CONSTRAINT: '2.5.29.6', // obsolete, use .30
  SUBJECT_DIRECTORY_ATTRIBUTES: '2.5.29.9',
  SUBJECT_KEY_IDENTIFIER: '2.5.29.14',
  KEY_USAGE: '2.5.29.15',
  PRIVATE_KEY_USAGE_PERIOD: '2.5.29.16',
  SUBJECT_ALT_NAME: '2.5.29.17',
  ISSUER_ALT_NAME: '2.5.29.18',
  BASIC_CONSTRAINTS: '2.5.29.19',
  CRL_NUMBER: '2.5.29.20',
  CRL_REASON: '2.5.29.21',
  EXPIRATION_DATE: '2.5.29.22',
  INSTRUCTION_CODE: '2.5.29.23',
  INVALIDITY_DATE: '2.5.29.24',
  DELTA_CRL_INDICATOR: '2.5.29.27',
  ISSUING_DISTRIBUTION_POINT: '2.5.29.28',
  CERTIFICATE_ISSUER: '2.5.29.29',
  NAME_CONSTRAINTS: '2.5.29.30',
  CRL_DISTRIBUTION_POINTS: '2.5.29.31',
  CERTIFICATE_POLICIES: '2.5.29.32',
  POLICY_MAPPINGS: '2.5.29.33',
  AUTHORITY_KEY_IDENTIFIER: '2.5.29.35',
  POLICY_CONSTRAINTS: '2.5.29.36',
  EXT_KEY_USAGE: '2.5.29.37',
  FRESHEST_CRL: '2.5.29.46',
  INHIBIT_ANY_POLICY: '2.5.29.54',
};

const extsByVal = {
  [exts.NS_CERT_TYPE]: 'NS_CERT_TYPE',
  [exts.KEY_ATTRIBUTES]: 'KEY_ATTRIBUTES', // obsolete, use .37 or .15
  [exts.KEY_USAGE_RESTRICTION]: 'KEY_USAGE_RESTRICTION', // obsolete, use .37 or .15
  [exts.SUBTREES_CONSTRAINT]: 'SUBTREES_CONSTRAINT', // obsolete, use .30
  [exts.SUBJECT_DIRECTORY_ATTRIBUTES]: 'SUBJECT_DIRECTORY_ATTRIBUTES',
  [exts.SUBJECT_KEY_IDENTIFIER]: 'SUBJECT_KEY_IDENTIFIER',
  [exts.KEY_USAGE]: 'KEY_USAGE',
  [exts.PRIVATE_KEY_USAGE_PERIOD]: 'PRIVATE_KEY_USAGE_PERIOD',
  [exts.SUBJECT_ALT_NAME]: 'SUBJECT_ALT_NAME',
  [exts.ISSUER_ALT_NAME]: 'ISSUER_ALT_NAME',
  [exts.BASIC_CONSTRAINTS]: 'BASIC_CONSTRAINTS',
  [exts.CRL_NUMBER]: 'CRL_NUMBER',
  [exts.CRL_REASON]: 'CRL_REASON',
  [exts.EXPIRATION_DATE]: 'EXPIRATION_DATE',
  [exts.INSTRUCTION_CODE]: 'INSTRUCTION_CODE',
  [exts.INVALIDITY_DATE]: 'INVALIDITY_DATE',
  [exts.DELTA_CRL_INDICATOR]: 'DELTA_CRL_INDICATOR',
  [exts.ISSUING_DISTRIBUTION_POINT]: 'ISSUING_DISTRIBUTION_POINT',
  [exts.CERTIFICATE_ISSUER]: 'CERTIFICATE_ISSUER',
  [exts.NAME_CONSTRAINTS]: 'NAME_CONSTRAINTS',
  [exts.CRL_DISTRIBUTION_POINTS]: 'CRL_DISTRIBUTION_POINTS',
  [exts.CERTIFICATE_POLICIES]: 'CERTIFICATE_POLICIES',
  [exts.POLICY_MAPPINGS]: 'POLICY_MAPPINGS',
  [exts.AUTHORITY_KEY_IDENTIFIER]: 'AUTHORITY_KEY_IDENTIFIER',
  [exts.POLICY_CONSTRAINTS]: 'POLICY_CONSTRAINTS',
  [exts.EXT_KEY_USAGE]: 'EXT_KEY_USAGE',
  [exts.FRESHEST_CRL]: 'FRESHEST_CRL',
  [exts.INHIBIT_ANY_POLICY]: 'INHIBIT_ANY_POLICY',
};

Object.assign(attrs, exts);
Object.assign(attrsByVal, extsByVal);

const regoid = /^[0-9.]+$/;

function findIdByName(name: string) {
  if (attrs.hasOwnProperty(name)) {
    return attrs[name];
  } else if (keyAlgs.hasOwnProperty(name)) {
    return keyAlgs[name];
  } else if (hashes.hasOwnProperty(name)) {
    return hashes[name];
  } else if (curves.hasOwnProperty(name)) {
    return curves[name];
  } else if (sigAlgs.hasOwnProperty(name)) {
    return sigAlgs[name];
  } else if (exts.hasOwnProperty(name)) {
    return exts[name];
  }

}

function findNameById(id: string) {
  if (attrsByVal.hasOwnProperty(id)) {
    return attrsByVal[id];
  } else if (keyAlgsByVal.hasOwnProperty(id)) {
    return keyAlgsByVal[id];
  } else if (hashesByVal.hasOwnProperty(id)) {
    return hashesByVal[id];
  } else if (curvesByVal.hasOwnProperty(id)) {
    return curvesByVal[id];
  } else if (sigAlgsByVal.hasOwnProperty(id)) {
    return sigAlgsByVal[id];
  } else if (extsByVal.hasOwnProperty(id)) {
    return extsByVal[id];
  }
}

function findHashBySig(sigIdOrName: string) {
  return sigToHash[foid(sigIdOrName)];
}

/**
 * Returns Object Identifier (dot-separated numeric string) that registered by initOID function.
 * It will return empty string if not exists.
 * @param oidOrName OID name or OID
 */
function foid(oidOrName: string): string {
  const found = findIdByName(oidOrName) || findIdByName(oidOrName.toUpperCase());

  if (regoid.test(oidOrName) && found !== '') {
    return oidOrName;
  }

  return found == null ? '' : found;
}

/**
 * Returns Object Identifier name that registered by initOID function.
 * It will return the argument nameOrId if not exists.
 * @param nameOrOid OID name or OID
 */
function fname(nameOrOid: string): string {
  const found = findNameById(nameOrOid) || findNameById(nameOrOid.toUpperCase());

  if (!regoid.test(nameOrOid) && found !== '') {
    return nameOrOid;
  }

  return found == null ? nameOrOid : found;
}

function goid(oidOrName: string): string {
  const oid = foid(oidOrName);
  if (!oid) throw new Error('Unknown oid or name: ' + oidOrName);
  return oid;
}

function gname(nameOrOid: string): string {
  const name = fname(nameOrOid);
  if (!name) throw new Error('Unknown name or oid: ' + nameOrOid);
  return name;
}

export const oids = {
  NONE,
  attrs,
  attrsByVal,
  keyAlgs,
  keyAlgsByVal,
  hashes,
  hashesByVal,
  curves,
  curvesByVal,
  sigAlgs,
  sigAlgsByVal,
  sigToHash,
  exts,
  extsByVal,
  findHashBySig,
  foid,
  fname,
  goid,
  gname,
}