import { NodeCryptoFunctionService } from '../../../src/services/nodeCryptoFunction.service';

import { Utils } from '../../../src/misc/utils';
import { SymmetricCryptoKey } from '../../../src/models/domain/symmetricCryptoKey';

const RsaPublicKey = 'MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAl0Vawl/toXzkEvB82FEtqHP' +
    '4xlU2ab/v0crqIfXfIoWF/XXdHGIdrZeilnRXPPJT1B9dTsasttEZNnua/0Rek/cjNDHtzT52irfoZYS7X6HNIfOi54Q+egP' +
    'RQ1H7iNHVZz3K8Db9GCSKPeC8MbW6gVCzb15esCe1gGzg6wkMuWYDFYPoh/oBqcIqrGah7firqB1nDedzEjw32heP2DAffVN' +
    '084iTDjiWrJNUxBJ2pDD5Z9dT3MzQ2s09ew1yMWK2z37rT3YerC7OgEDmo3WYo3xL3qYJznu3EO2nmrYjiRa40wKSjxsTlUc' +
    'xDF+F0uMW8oR9EMUHgepdepfAtLsSAQIDAQAB';
const RsaPrivateKey = 'MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQCXRVrCX+2hfOQS8Hz' +
    'YUS2oc/jGVTZpv+/Ryuoh9d8ihYX9dd0cYh2tl6KWdFc88lPUH11Oxqy20Rk2e5r/RF6T9yM0Me3NPnaKt+hlhLtfoc0h86L' +
    'nhD56A9FDUfuI0dVnPcrwNv0YJIo94LwxtbqBULNvXl6wJ7WAbODrCQy5ZgMVg+iH+gGpwiqsZqHt+KuoHWcN53MSPDfaF4/' +
    'YMB99U3TziJMOOJask1TEEnakMPln11PczNDazT17DXIxYrbPfutPdh6sLs6AQOajdZijfEvepgnOe7cQ7aeatiOJFrjTApK' +
    'PGxOVRzEMX4XS4xbyhH0QxQeB6l16l8C0uxIBAgMBAAECggEASaWfeVDA3cVzOPFSpvJm20OTE+R6uGOU+7vh36TX/POq92q' +
    'Buwbd0h0oMD32FxsXywd2IxtBDUSiFM9699qufTVuM0Q3tZw6lHDTOVG08+tPdr8qSbMtw7PGFxN79fHLBxejjO4IrM9lapj' +
    'WpxEF+11x7r+wM+0xRZQ8sNFYG46aPfIaty4BGbL0I2DQ2y8I57iBCAy69eht59NLMm27fRWGJIWCuBIjlpfzET1j2HLXUIh' +
    '5bTBNzqaN039WH49HczGE3mQKVEJZc/efk3HaVd0a1Sjzyn0QY+N1jtZN3jTRbuDWA1AknkX1LX/0tUhuS3/7C3ejHxjw4Dk' +
    '1ZLo5/QKBgQDIWvqFn0+IKRSu6Ua2hDsufIHHUNLelbfLUMmFthxabcUn4zlvIscJO00Tq/ezopSRRvbGiqnxjv/mYxucvOU' +
    'BeZtlus0Q9RTACBtw9TGoNTmQbEunJ2FOSlqbQxkBBAjgGEppRPt30iGj/VjAhCATq2MYOa/X4dVR51BqQAFIEwKBgQDBSIf' +
    'TFKC/hDk6FKZlgwvupWYJyU9RkyfstPErZFmzoKhPkQ3YORo2oeAYmVUbS9I2iIYpYpYQJHX8jMuCbCz4ONxTCuSIXYQYUcU' +
    'q4PglCKp31xBAE6TN8SvhfME9/MvuDssnQinAHuF0GDAhF646T3LLS1not6Vszv7brwSoGwKBgQC88v/8cGfi80ssQZeMnVv' +
    'q1UTXIeQcQnoY5lGHJl3K8mbS3TnXE6c9j417Fdz+rj8KWzBzwWXQB5pSPflWcdZO886Xu/mVGmy9RWgLuVFhXwCwsVEPjNX' +
    '5ramRb0/vY0yzenUCninBsIxFSbIfrPtLUYCc4hpxr+sr2Mg/y6jpvQKBgBezMRRs3xkcuXepuI2R+BCXL1/b02IJTUf1F+1' +
    'eLLGd7YV0H+J3fgNc7gGWK51hOrF9JBZHBGeOUPlaukmPwiPdtQZpu4QNE3l37VlIpKTF30E6mb+BqR+nht3rUjarnMXgAoE' +
    'Z18y6/KIjpSMpqC92Nnk/EBM9EYe6Cf4eA9ApAoGAeqEUg46UTlJySkBKURGpIs3v1kkf5I0X8DnOhwb+HPxNaiEdmO7ckm8' +
    '+tPVgppLcG0+tMdLjigFQiDUQk2y3WjyxP5ZvXu7U96jaJRI8PFMoE06WeVYcdIzrID2HvqH+w0UQJFrLJ/0Mn4stFAEzXKZ' +
    'BokBGnjFnTnKcs7nv/O8=';

const Sha1Mac = '4d4c223f95dc577b665ec4ccbcb680b80a397038';
const Sha256Mac = '6be3caa84922e12aaaaa2f16c40d44433bb081ef323db584eb616333ab4e874f';
const Sha512Mac = '21910e341fa12106ca35758a2285374509326c9fbe0bd64e7b99c898f841dc948c58ce66d3504d8883c' +
    '5ea7817a0b7c5d4d9b00364ccd214669131fc17fe4aca';

describe('NodeCrypto Function Service', () => {
    describe('pbkdf2', () => {
        const regular256Key = 'pj9prw/OHPleXI6bRdmlaD+saJS4awrMiQsQiDjeu2I=';
        const utf8256Key = 'yqvoFXgMRmHR3QPYr5pyR4uVuoHkltv9aHUP63p8n7I=';
        const unicode256Key = 'ZdeOata6xoRpB4DLp8zHhXz5kLmkWtX5pd+TdRH8w8w=';

        const regular512Key = 'liTi/Ke8LPU1Qv+Vl7NGEVt/XMbsBVJ2kQxtVG/Z1/JFHFKQW3ZkI81qVlwTiCpb+cFXzs+57' +
            'eyhhx5wfKo5Cg==';
        const utf8512Key = 'df0KdvIBeCzD/kyXptwQohaqUa4e7IyFUyhFQjXCANu5T+scq55hCcE4dG4T/MhAk2exw8j7ixRN' +
            'zXANiVZpnw==';
        const unicode512Key = 'FE+AnUJaxv8jh+zUDtZz4mjjcYk0/PZDZm+SLJe3XtxtnpdqqpblX6JjuMZt/dYYNMOrb2+mD' +
            'L3FiQDTROh1lg==';

        testPbkdf2('sha256', regular256Key, utf8256Key, unicode256Key);
        testPbkdf2('sha512', regular512Key, utf8512Key, unicode512Key);
    });

    describe('hash', () => {
        const regular1Hash = '2a241604fb921fad12bf877282457268e1dccb70';
        const utf81Hash = '85672798dc5831e96d6c48655d3d39365a9c88b6';
        const unicode1Hash = '39c975935054a3efc805a9709b60763a823a6ad4';

        const regular256Hash = '2b8e96031d352a8655d733d7a930b5ffbea69dc25cf65c7bca7dd946278908b2';
        const utf8256Hash = '25fe8440f5b01ed113b0a0e38e721b126d2f3f77a67518c4a04fcde4e33eeb9d';
        const unicode256Hash = 'adc1c0c2afd6e92cefdf703f9b6eb2c38e0d6d1a040c83f8505c561fea58852e';

        const regular512Hash = 'c15cf11d43bde333647e3f559ec4193bb2edeaa0e8b902772f514cdf3f785a3f49a6e02a4b87b3' +
            'b47523271ad45b7e0aebb5cdcc1bc54815d256eb5dcb80da9d';
        const utf8512Hash = '035c31a877a291af09ed2d3a1a293e69c3e079ea2cecc00211f35e6bce10474ca3ad6e30b59e26118' +
            '37463f20969c5bc95282965a051a88f8cdf2e166549fcdd';
        const unicode512Hash = '2b16a5561af8ad6fe414cc103fc8036492e1fc6d9aabe1b655497054f760fe0e34c5d100ac773d' +
            '9f3030438284f22dbfa20cb2e9b019f2c98dfe38ce1ef41bae';

        testHash('sha1', regular1Hash, utf81Hash, unicode1Hash);
        testHash('sha256', regular256Hash, utf8256Hash, unicode256Hash);
        testHash('sha512', regular512Hash, utf8512Hash, unicode512Hash);
    });

    describe('hmac', () => {
        testHmac('sha1', Sha1Mac);
        testHmac('sha256', Sha256Mac);
        testHmac('sha512', Sha512Mac);
    });

    describe('compare', () => {
        testCompare(false);
    });

    describe('hmacFast', () => {
        testHmac('sha1', Sha1Mac, true);
        testHmac('sha256', Sha256Mac, true);
        testHmac('sha512', Sha512Mac, true);
    });

    describe('compareFast', () => {
        testCompare(true);
    });

    describe('aesEncrypt', () => {
        it('should successfully encrypt data', async () => {
            const nodeCryptoFunctionService = new NodeCryptoFunctionService();
            const iv = makeStaticByteArray(16);
            const key = makeStaticByteArray(32);
            const data = Utils.fromUtf8ToArray('EncryptMe!');
            const encValue = await nodeCryptoFunctionService.aesEncrypt(data.buffer, iv.buffer, key.buffer);
            expect(Utils.fromBufferToB64(encValue)).toBe('ByUF8vhyX4ddU9gcooznwA==');
        });

        it('should successfully encrypt and then decrypt data', async () => {
            const nodeCryptoFunctionService = new NodeCryptoFunctionService();
            const iv = makeStaticByteArray(16);
            const key = makeStaticByteArray(32);
            const value = 'EncryptMe!';
            const data = Utils.fromUtf8ToArray(value);
            const encValue = await nodeCryptoFunctionService.aesEncrypt(data.buffer, iv.buffer, key.buffer);
            const decValue = await nodeCryptoFunctionService.aesDecrypt(encValue, iv.buffer, key.buffer);
            expect(Utils.fromBufferToUtf8(decValue)).toBe(value);
        });
    });

    describe('aesDecryptFast', () => {
        it('should successfully decrypt data', async () => {
            const nodeCryptoFunctionService = new NodeCryptoFunctionService();
            const iv = Utils.fromBufferToB64(makeStaticByteArray(16).buffer);
            const symKey = new SymmetricCryptoKey(makeStaticByteArray(32).buffer);
            const data = 'ByUF8vhyX4ddU9gcooznwA==';
            const params = nodeCryptoFunctionService.aesDecryptFastParameters(data, iv, null, symKey);
            const decValue = await nodeCryptoFunctionService.aesDecryptFast(params);
            expect(decValue).toBe('EncryptMe!');
        });
    });

    describe('aesDecrypt', () => {
        it('should successfully decrypt data', async () => {
            const nodeCryptoFunctionService = new NodeCryptoFunctionService();
            const iv = makeStaticByteArray(16);
            const key = makeStaticByteArray(32);
            const data = Utils.fromB64ToArray('ByUF8vhyX4ddU9gcooznwA==');
            const decValue = await nodeCryptoFunctionService.aesDecrypt(data.buffer, iv.buffer, key.buffer);
            expect(Utils.fromBufferToUtf8(decValue)).toBe('EncryptMe!');
        });
    });

    describe('rsaEncrypt', () => {
        it('should successfully encrypt and then decrypt data', async () => {
            const nodeCryptoFunctionService = new NodeCryptoFunctionService();
            const pubKey = Utils.fromB64ToArray(RsaPublicKey);
            const privKey = Utils.fromB64ToArray(RsaPrivateKey);
            const value = 'EncryptMe!';
            const data = Utils.fromUtf8ToArray(value);
            const encValue = await nodeCryptoFunctionService.rsaEncrypt(data.buffer, pubKey.buffer, 'sha1');
            const decValue = await nodeCryptoFunctionService.rsaDecrypt(encValue, privKey.buffer, 'sha1');
            expect(Utils.fromBufferToUtf8(decValue)).toBe(value);
        });
    });

    describe('rsaDecrypt', () => {
        it('should successfully decrypt data', async () => {
            const nodeCryptoFunctionService = new NodeCryptoFunctionService();
            const privKey = Utils.fromB64ToArray(RsaPrivateKey);
            const data = Utils.fromB64ToArray('A1/p8BQzN9UrbdYxUY2Va5+kPLyfZXF9JsZrjeEXcaclsnHurdxVAJcnbEqYMP3UXV' +
                '4YAS/mpf+Rxe6/X0WS1boQdA0MAHSgx95hIlAraZYpiMLLiJRKeo2u8YivCdTM9V5vuAEJwf9Tof/qFsFci3sApdbATkorCT' +
                'zFOIEPF2S1zgperEP23M01mr4dWVdYN18B32YF67xdJHMbFhp5dkQwv9CmscoWq7OE5HIfOb+JAh7BEZb+CmKhM3yWJvoR/D' +
                '/5jcercUtK2o+XrzNrL4UQ7yLZcFz6Bfwb/j6ICYvqd/YJwXNE6dwlL57OfwJyCdw2rRYf0/qI00t9u8Iitw==');
            const decValue = await nodeCryptoFunctionService.rsaDecrypt(data.buffer, privKey.buffer, 'sha1');
            expect(Utils.fromBufferToUtf8(decValue)).toBe('EncryptMe!');
        });
    });

    describe('rsaExtractPublicKey', () => {
        it('should successfully extract key', async () => {
            const nodeCryptoFunctionService = new NodeCryptoFunctionService();
            const privKey = Utils.fromB64ToArray(RsaPrivateKey);
            const publicKey = await nodeCryptoFunctionService.rsaExtractPublicKey(privKey.buffer);
            expect(Utils.fromBufferToB64(publicKey)).toBe(RsaPublicKey);
        });
    });

    describe('rsaGenerateKeyPair', () => {
        testRsaGenerateKeyPair(1024);
        testRsaGenerateKeyPair(2048);

        // Generating 4096 bit keys is really slow with Forge lib.
        // Maybe move to something else if we ever want to generate keys of this size.
        // testRsaGenerateKeyPair(4096);
    });

    describe('randomBytes', () => {
        it('should make a value of the correct length', async () => {
            const nodeCryptoFunctionService = new NodeCryptoFunctionService();
            const randomData = await nodeCryptoFunctionService.randomBytes(16);
            expect(randomData.byteLength).toBe(16);
        });

        it('should not make the same value twice', async () => {
            const nodeCryptoFunctionService = new NodeCryptoFunctionService();
            const randomData = await nodeCryptoFunctionService.randomBytes(16);
            const randomData2 = await nodeCryptoFunctionService.randomBytes(16);
            expect(randomData.byteLength === randomData2.byteLength && randomData !== randomData2).toBeTruthy();
        });
    });
});

function testPbkdf2(algorithm: 'sha256' | 'sha512', regularKey: string, utf8Key: string, unicodeKey: string) {
    const regularEmail = 'user@example.com';
    const utf8Email = 'üser@example.com';

    const regularPassword = 'password';
    const utf8Password = 'pǻssword';
    const unicodePassword = '😀password🙏';

    it('should create valid ' + algorithm + ' key from regular input', async () => {
        const cryptoFunctionService = new NodeCryptoFunctionService();
        const key = await cryptoFunctionService.pbkdf2(regularPassword, regularEmail, algorithm, 5000);
        expect(Utils.fromBufferToB64(key)).toBe(regularKey);
    });

    it('should create valid ' + algorithm + ' key from utf8 input', async () => {
        const cryptoFunctionService = new NodeCryptoFunctionService();
        const key = await cryptoFunctionService.pbkdf2(utf8Password, utf8Email, algorithm, 5000);
        expect(Utils.fromBufferToB64(key)).toBe(utf8Key);
    });

    it('should create valid ' + algorithm + ' key from unicode input', async () => {
        const cryptoFunctionService = new NodeCryptoFunctionService();
        const key = await cryptoFunctionService.pbkdf2(unicodePassword, regularEmail, algorithm, 5000);
        expect(Utils.fromBufferToB64(key)).toBe(unicodeKey);
    });

    it('should create valid ' + algorithm + ' key from array buffer input', async () => {
        const cryptoFunctionService = new NodeCryptoFunctionService();
        const key = await cryptoFunctionService.pbkdf2(Utils.fromUtf8ToArray(regularPassword).buffer,
            Utils.fromUtf8ToArray(regularEmail).buffer, algorithm, 5000);
        expect(Utils.fromBufferToB64(key)).toBe(regularKey);
    });
}

function testHash(algorithm: 'sha1' | 'sha256' | 'sha512', regularHash: string, utf8Hash: string, unicodeHash: string) {
    const regularValue = 'HashMe!!';
    const utf8Value = 'HǻshMe!!';
    const unicodeValue = '😀HashMe!!!🙏';

    it('should create valid ' + algorithm + ' hash from regular input', async () => {
        const cryptoFunctionService = new NodeCryptoFunctionService();
        const hash = await cryptoFunctionService.hash(regularValue, algorithm);
        expect(Utils.fromBufferToHex(hash)).toBe(regularHash);
    });

    it('should create valid ' + algorithm + ' hash from utf8 input', async () => {
        const cryptoFunctionService = new NodeCryptoFunctionService();
        const hash = await cryptoFunctionService.hash(utf8Value, algorithm);
        expect(Utils.fromBufferToHex(hash)).toBe(utf8Hash);
    });

    it('should create valid ' + algorithm + ' hash from unicode input', async () => {
        const cryptoFunctionService = new NodeCryptoFunctionService();
        const hash = await cryptoFunctionService.hash(unicodeValue, algorithm);
        expect(Utils.fromBufferToHex(hash)).toBe(unicodeHash);
    });

    it('should create valid ' + algorithm + ' hash from array buffer input', async () => {
        const cryptoFunctionService = new NodeCryptoFunctionService();
        const hash = await cryptoFunctionService.hash(Utils.fromUtf8ToArray(regularValue).buffer, algorithm);
        expect(Utils.fromBufferToHex(hash)).toBe(regularHash);
    });
}

function testHmac(algorithm: 'sha1' | 'sha256' | 'sha512', mac: string, fast = false) {
    it('should create valid ' + algorithm + ' hmac', async () => {
        const cryptoFunctionService = new NodeCryptoFunctionService();
        const value = Utils.fromUtf8ToArray('SignMe!!').buffer;
        const key = Utils.fromUtf8ToArray('secretkey').buffer;
        let computedMac: ArrayBuffer = null;
        if (fast) {
            computedMac = await cryptoFunctionService.hmacFast(value, key, algorithm);
        } else {
            computedMac = await cryptoFunctionService.hmac(value, key, algorithm);
        }
        expect(Utils.fromBufferToHex(computedMac)).toBe(mac);
    });
}

function testCompare(fast = false) {
    it('should successfully compare two of the same values', async () => {
        const cryptoFunctionService = new NodeCryptoFunctionService();
        const a = new Uint8Array(2);
        a[0] = 1;
        a[1] = 2;
        const equal = fast ? await cryptoFunctionService.compareFast(a.buffer, a.buffer) :
            await cryptoFunctionService.compare(a.buffer, a.buffer);
        expect(equal).toBe(true);
    });

    it('should successfully compare two different values of the same length', async () => {
        const cryptoFunctionService = new NodeCryptoFunctionService();
        const a = new Uint8Array(2);
        a[0] = 1;
        a[1] = 2;
        const b = new Uint8Array(2);
        b[0] = 3;
        b[1] = 4;
        const equal = fast ? await cryptoFunctionService.compareFast(a.buffer, b.buffer) :
            await cryptoFunctionService.compare(a.buffer, b.buffer);
        expect(equal).toBe(false);
    });

    it('should successfully compare two different values of different lengths', async () => {
        const cryptoFunctionService = new NodeCryptoFunctionService();
        const a = new Uint8Array(2);
        a[0] = 1;
        a[1] = 2;
        const b = new Uint8Array(2);
        b[0] = 3;
        const equal = fast ? await cryptoFunctionService.compareFast(a.buffer, b.buffer) :
            await cryptoFunctionService.compare(a.buffer, b.buffer);
        expect(equal).toBe(false);
    });
}

function testRsaGenerateKeyPair(length: 1024 | 2048 | 4096) {
    it('should successfully generate a ' + length + ' bit key pair', async () => {
        const cryptoFunctionService = new NodeCryptoFunctionService();
        const keyPair = await cryptoFunctionService.rsaGenerateKeyPair(length);
        expect(keyPair[0] == null || keyPair[1] == null).toBe(false);
        const publicKey = await cryptoFunctionService.rsaExtractPublicKey(keyPair[1]);
        expect(Utils.fromBufferToB64(keyPair[0])).toBe(Utils.fromBufferToB64(publicKey));
    }, 30000);
}

function makeStaticByteArray(length: number) {
    const arr = new Uint8Array(length);
    for (let i = 0; i < length; i++) {
        arr[i] = i;
    }
    return arr;
}