Musify/lib/utilities/utils.dart

import 'package:flutter/material.dart';
import 'package:musify/main.dart';
import 'package:musify/utilities/common_variables.dart';

BorderRadius getItemBorderRadius(int index, int totalLength) {
  const defaultRadius = BorderRadius.zero;
  if (totalLength == 1) {
    return commonCustomBarRadius; // Only one item
  } else if (index == 0) {
    return commonCustomBarRadiusFirst; // First item
  } else if (index == totalLength - 1) {
    return commonCustomBarRadiusLast; // Last item
  }
  return defaultRadius; // Default for middle items
}

Locale getLocaleFromLanguageCode(String? languageCode) {
  // Early return for null case
  if (languageCode == null) {
    return const Locale('en');
  }

  // Handle codes with script parts
  if (languageCode.contains('-')) {
    final parts = languageCode.split('-');
    final baseLanguage = parts[0];
    final script = parts[1];

    // Try to find exact match with script
    for (final locale in appSupportedLocales) {
      if (locale.languageCode == baseLanguage && locale.scriptCode == script) {
        return locale;
      }
    }

    // Fall back to base language only
    return Locale(baseLanguage);
  }

  // Handle simple language codes
  for (final locale in appSupportedLocales) {
    if (locale.languageCode == languageCode) {
      return locale;
    }
  }

  // Default fallback
  return const Locale('en');
}

/// Validates if a URL is a YouTube playlist URL
bool isYoutubePlaylistUrl(String url) {
  final playlistRegExp = RegExp(
    r'^(https?:\/\/)?(www\.)?(youtube\.com|youtu\.be)\/.*(list=([a-zA-Z0-9_-]+)).*$',
  );
  return playlistRegExp.hasMatch(url);
}

/// Extracts the playlist ID from a YouTube playlist URL
String? extractYoutubePlaylistId(String url) {
  if (!isYoutubePlaylistUrl(url)) {
    return null;
  }

  final playlistIdRegExp = RegExp('[&?]list=([a-zA-Z0-9_-]+)');
  final match = playlistIdRegExp.firstMatch(url);

  return match?.group(1);
}