#!/usr/bin/php
<?php

require_once('utils.php');

// === Load client credentials ===
$secrets = json_decode(file_get_contents(__DIR__ . '/_credentials/client_secret.json'), true);
$client = $secrets['installed'] ?? $secrets['web'] ?? null;

if (!$client || !isset($client['client_id'], $client['client_secret'])) {
    die("Error: Invalid client_secret.json format.\n");
}

$clientId = $client['client_id'];
$clientSecret = $client['client_secret'];

// === Create playlist helper ===
function createPlaylist($accessToken) {

    $path = __DIR__ . '/_credentials/fedilist_id.txt';

    if (file_exists($path))   {
            echo "✅ FediList Playlist ID already exists at :$path\n";
	    return;
    }

    $data = [
        'snippet' => [
            'title' => 'FediList',
            'description' => 'A custom playlist for federated videos'
        ],
        'status' => [
            'privacyStatus' => 'private'
        ]
    ];

    $ch = curl_init('https://www.googleapis.com/youtube/v3/playlists?part=snippet,status');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, [
        "Authorization: Bearer $accessToken",
        "Content-Type: application/json",
        "User-Agent: curl/7.64.1"
    ]);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
    $response = curl_exec($ch);
    if (curl_errno($ch)) {
        die("cURL error: " . curl_error($ch) . "\n");
    }
    curl_close($ch);

    $result = json_decode($response, true);



    $result = json_decode($response, true);
if (isset($result['id'])) {
    echo "FediList created!\nPlaylist ID: " . $result['id'] . "\n";
    file_put_contents($path, $result['id']);
} else {
    echo "Failed to create playlist:\n$response\n";
}

}

// === Step 1: Get device code ===
$deviceData = curlPost('https://oauth2.googleapis.com/device/code', [
    'client_id' => $clientId,
    'scope' => 'https://www.googleapis.com/auth/youtube'
]);

if (!isset($deviceData['user_code'])) {
    die("Failed to get device code.\n");
}

echo "\n";
echo "==============================\n";
echo "==== DEVICE AUTHORIZATION ====\n";
echo "==============================\n";
echo "Visit:      " . $deviceData['verification_url'] . "\n";
echo "\n";
echo "Enter code: " . $deviceData['user_code'] . "\n\nFinish login process and come back here.";

echo "\n\nWaiting...";


// === Step 2: Poll for token ===
$token = null;
$startTime = time();
while (true) {
    sleep($deviceData['interval']);
    echo ".";

    $tokenResponse = curlPost('https://oauth2.googleapis.com/token', [
        'client_id' => $clientId,
        'client_secret' => $clientSecret,
        'device_code' => $deviceData['device_code'],
        'grant_type' => 'urn:ietf:params:oauth:grant-type:device_code'
    ]);

    if (isset($tokenResponse['access_token'])) {
    	$tokenResponse['expires_at'] = time() + $tokenResponse['expires_in'];
	$path  = __DIR__ . '/_credentials/token.json';
    	file_put_contents($path, json_encode($tokenResponse));
    	echo "\n✅ Token saved as $path.\n";
	break;
    }


    if (isset($tokenResponse['error']) && $tokenResponse['error'] !== 'authorization_pending') {
        die("\nAuth error: " . $tokenResponse['error'] . "\n");
    }

    if (time() - $startTime > $deviceData['expires_in']) {
        die("\nAuthorization timed out.\n");
    }
}

// === Step 3: Create FediList Playlist ===
createPlaylist($tokenResponse['access_token']);

?>