import 'package:flutter/material.dart';

import 'package:get/get.dart';

import 'package:f0ckapp/models/mediaitem_model.dart';

const List<String> mediaTypes = ["alles", "image", "video", "audio"];
const List<String> mediaModes = ["sfw", "nsfw", "untagged", "all"];

class ApiService extends GetConnect {
  RxList<MediaItem> mediaItems = <MediaItem>[].obs;
  RxnString tag = RxnString();
  RxInt type = 0.obs;
  RxInt mode = 0.obs;
  RxBool random = false.obs;

  bool _isFetching = false;
  DateTime? _lastFetchTime;
  final Duration _minFetchInterval = Duration(milliseconds: 500);

  @override
  void onInit() {
    super.onInit();
    everAll([tag, type, mode, random], (_) => fetchMedia(reset: true));
  }

  Future<void> setTag(String? newTag) async {
    tag.value = newTag;
    return await fetchMedia(reset: true);
  }

  Future<void> setType(int newType) async {
    type.value = newType >= 0 && newType < mediaTypes.length ? newType : 0;
    return await fetchMedia(reset: true);
  }

  Future<void> setMode(int newMode) async {
    mode.value = newMode >= 0 && newMode < mediaModes.length ? newMode : 0;
    return await fetchMedia(reset: true);
  }

  Future<void> toggleRandom() async {
    random.value = !random.value;
    return await fetchMedia(reset: true);
  }

  Future fetchMedia({int? id, bool reset = false}) async {
    if (!reset) {
      if (_isFetching) return;
      if (_lastFetchTime != null &&
          DateTime.now().difference(_lastFetchTime!) < _minFetchInterval) {
        return;
      }
    }
    _lastFetchTime = DateTime.now();
    _isFetching = true;

    if (reset) mediaItems.clear();

    final int? older =
        id ?? (mediaItems.isNotEmpty ? mediaItems.last.id : null);
    final Uri url = Uri.parse('https://api.f0ck.me/items/get').replace(
      queryParameters: {
        'type': mediaTypes[type.value],
        'mode': mode.value.toString(),
        'random': (random.value ? 1 : 0).toString(),
        if (tag.value != null) 'tag': tag.value,
        if (older != null) 'older': older.toString(),
      },
    );

    try {
      final Response<dynamic> response = await get(url.toString());

      if (response.isOk && response.body is List) {
        List<MediaItem> newMedia = (response.body as List)
            .map((json) => MediaItem.fromJson(json))
            .toList();

        if (reset) {
          mediaItems.assignAll(newMedia);
        } else {
          mediaItems.addAll(newMedia);
        }
      } else {
        debugPrint('Fehler beim Laden der MediaItems: ${response.statusText}');
      }
    } catch (e) {
      debugPrint('Exception beim Laden der MediaItems: $e');
    } finally {
      _isFetching = false;
    }
  }
}