const parsePkcs12 = require('../../../lib/credentials/certificate/parsePkcs12');

const APNKey = require('../../../lib/credentials/certificate/APNKey');
const APNCertificate = require('../../../lib/credentials/certificate/APNCertificate');

const fs = require('fs');

describe('parsePkcs12', function () {
  describe('with PKCS#12 data', function () {
    let p12, properties;
    describe('return value', function () {
      let credentials;
      before(function () {
        p12 = fs.readFileSync('test/credentials/support/certIssuerKey.p12');
        credentials = parsePkcs12(p12);
      });

      it('is an object', function () {
        expect(credentials).to.be.an('object');
      });

      it('contains a private key', function () {
        expect(credentials).to.include.keys('key');
      });

      describe('private key', function () {
        it('is an instance of APNKey', function () {
          expect(credentials.key).to.be.an.instanceof(APNKey);
        });

        it('has the correct fingerprint', function () {
          expect(credentials.key.fingerprint()).to.equal(
            '2d594c9861227dd22ba5ae37cc9354e9117a804d'
          );
        });
      });

      it('contains a certificate chain', function () {
        expect(credentials).to.include.keys('certificates');
      });

      describe('certificate chain', function () {
        it('is an array', function () {
          expect(credentials.certificates).to.be.an('array');
        });

        it('contains the correct number of certificates', function () {
          expect(credentials.certificates.length).to.equal(2);
        });

        it('contains APNCertificate objects', function () {
          const certificates = credentials.certificates;
          certificates.forEach(function (certificate) {
            expect(certificate).to.be.an.instanceof(APNCertificate);
          });
        });

        it('contains certificates with the correct fingerprints', function () {
          const fingerprints = [
            '2d594c9861227dd22ba5ae37cc9354e9117a804d',
            'ccff221d67cb3335649f9b4fbb311948af76f4b2',
          ];
          const certificates = credentials.certificates;
          certificates.forEach(function (certificate, index) {
            expect(certificate.key().fingerprint()).to.equal(fingerprints[index]);
          });
        });
      });
    });

    // OpenSSL exports keys having no passphrase as a C string with a \0 byte appended
    describe('having empty passphrase (OpenSSL-CLI-generated file)', function () {
      describe('return value', function () {
        it('has the correct key', function () {
          p12 = fs.readFileSync('test/credentials/support/certIssuerKeyOpenSSL.p12');
          properties = parsePkcs12(p12);
          expect(properties.key.fingerprint()).to.equal('2d594c9861227dd22ba5ae37cc9354e9117a804d');
        });
      });
    });

    describe('with correct passphrase', function () {
      describe('return value', function () {
        it('has the correct key', function () {
          p12 = fs.readFileSync('test/credentials/support/certIssuerKeyPassphrase.p12');
          properties = parsePkcs12(p12, 'apntest');
          expect(properties.key.fingerprint()).to.equal('2d594c9861227dd22ba5ae37cc9354e9117a804d');
        });
      });
    });
    describe('with incorrect passphrase', function () {
      it('throws', function () {
        p12 = fs.readFileSync('test/credentials/support/certIssuerKeyPassphrase.p12');
        expect(function () {
          parsePkcs12(p12, 'notthepassphrase');
        }).to.throw('unable to parse credentials, incorrect passphrase');
      });
    });

    // Unclear whether multiple keys in one PKCS#12 file can be distinguished
    // at present if there's more than one just throw a warning. Should also
    // do the same thing in apnKeyFromPem
    describe('multiple keys', function () {
      it('throws', function () {
        p12 = fs.readFileSync('test/credentials/support/multipleKeys.p12');
        expect(function () {
          parsePkcs12(p12);
        }).to.throw('multiple keys found in PFX/P12 file');
      });
    });
  });

  describe('PEM file', function () {
    it('throws', function () {
      const pem = fs.readFileSync('test/credentials/support/certKey.pem');
      expect(function () {
        parsePkcs12(pem);
      }).to.throw('unable to parse credentials, not a PFX/P12 file');
    });
  });

  it('returns undefined for undefined', function () {
    expect(parsePkcs12()).to.be.undefined;
  });
});