"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
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      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
    var ownKeys = function(o) {
        ownKeys = Object.getOwnPropertyNames || function (o) {
            var ar = [];
            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
            return ar;
        };
        return ownKeys(o);
    };
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        if (mod && mod.__esModule) return mod;
        var result = {};
        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
        __setModuleDefault(result, mod);
        return result;
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.AesGcmCookieEncryptor = void 0;
const crypto = __importStar(require("crypto"));
class AesGcmCookieEncryptor {
    key;
    constructor(secret) {
        if (!secret || secret.trim().length < 16) {
            throw new Error('Cookie encryption secret muss mindestens 16 Zeichen lang sein');
        }
        this.key = crypto.createHash('sha256').update(secret).digest();
    }
    encrypt(text) {
        const iv = crypto.randomBytes(12);
        const cipher = crypto.createCipheriv('aes-256-gcm', this.key, iv);
        let encrypted = cipher.update(text, 'utf8', 'hex');
        encrypted += cipher.final('hex');
        const authTag = cipher.getAuthTag();
        return `${iv.toString('hex')}:${authTag.toString('hex')}:${encrypted}`;
    }
    decrypt(encryptedText) {
        const [ivHex, authTagHex, encrypted] = encryptedText.split(':');
        if (!ivHex || !authTagHex || !encrypted) {
            throw new Error('Ungueltiges verschluesseltes Cookie-Format');
        }
        const iv = Buffer.from(ivHex, 'hex');
        const authTag = Buffer.from(authTagHex, 'hex');
        const decipher = crypto.createDecipheriv('aes-256-gcm', this.key, iv);
        decipher.setAuthTag(authTag);
        let decrypted = decipher.update(encrypted, 'hex', 'utf8');
        decrypted += decipher.final('utf8');
        return decrypted;
    }
}
exports.AesGcmCookieEncryptor = AesGcmCookieEncryptor;
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