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

describe('parsePemCertificate', function () {
  describe('with PEM certificate', function () {
    let cert, certProperties;
    before(function () {
      cert = fs.readFileSync('test/credentials/support/cert.pem');
    });

    beforeEach(function () {
      certProperties = parsePemCertificate(cert);
    });

    describe('return value', function () {
      it('is an array', function () {
        expect(certProperties).to.be.an('array');
      });

      it('contains one element', function () {
        expect(certProperties).to.have.length(1);
      });

      describe('certificate [0]', function () {
        it('is an APNCertificate', function () {
          expect(certProperties[0]).to.be.an.instanceof(APNCertificate);
        });

        it('has the correct fingerprint', function () {
          expect(certProperties[0].key().fingerprint()).to.equal(
            '2d594c9861227dd22ba5ae37cc9354e9117a804d'
          );
        });
      });
    });
  });

  describe('with PEM containing multiple certificates', function () {
    let cert, certProperties;
    before(function () {
      cert = fs.readFileSync('test/credentials/support/certIssuerKey.pem');
    });

    beforeEach(function () {
      certProperties = parsePemCertificate(cert);
    });

    it('returns the correct number of certificates', function () {
      expect(certProperties).to.have.length(2);
    });

    describe('certificate [0]', function () {
      it('has the correct fingerprint', function () {
        expect(certProperties[0].key().fingerprint()).to.equal(
          '2d594c9861227dd22ba5ae37cc9354e9117a804d'
        );
      });
    });

    describe('certificate [1]', function () {
      it('has the correct fingerprint', function () {
        expect(certProperties[1].key().fingerprint()).to.equal(
          'ccff221d67cb3335649f9b4fbb311948af76f4b2'
        );
      });
    });
  });

  describe('with a PKCS#12 file', function () {
    it('throws', function () {
      const pfx = fs.readFileSync('test/credentials/support/certIssuerKey.p12');
      expect(function () {
        parsePemCertificate(pfx);
      }).to.throw('unable to parse certificate, not a valid PEM file');
    });
  });

  describe('with a key', function () {
    it('returns an empty array', function () {
      const key = fs.readFileSync('test/credentials/support/key.pem');
      expect(parsePemCertificate(key)).to.be.empty;
    });
  });

  describe('returns null', function () {
    it('for null', function () {
      expect(parsePemCertificate(null)).to.be.null;
    });

    it('for undefined', function () {
      expect(parsePemCertificate(undefined)).to.be.null;
    });
  });
});