"use strict";
/*
 * Copyright 2025 Matti Airas
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.buildAuthorizationUrl = buildAuthorizationUrl;
const pkce_1 = require("./pkce");
/**
 * Build the authorization URL for the OIDC flow
 * @param config OIDC configuration
 * @param metadata Discovery document metadata
 * @param authState The auth state containing state, nonce, code verifier
 * @returns The authorization URL to redirect the user to
 */
function buildAuthorizationUrl(config, metadata, authState) {
    const url = new URL(metadata.authorization_endpoint);
    // Required OAuth 2.0 parameters
    url.searchParams.set('response_type', 'code');
    url.searchParams.set('client_id', config.clientId);
    url.searchParams.set('redirect_uri', authState.redirectUri);
    url.searchParams.set('scope', config.scope);
    // State for CSRF protection
    url.searchParams.set('state', authState.state);
    // Nonce for ID token replay protection
    url.searchParams.set('nonce', authState.nonce);
    // PKCE parameters (S256 method)
    url.searchParams.set('code_challenge', (0, pkce_1.calculateCodeChallenge)(authState.codeVerifier));
    url.searchParams.set('code_challenge_method', 'S256');
    return url.toString();
}
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