import 'dart:convert';

import 'package:loris/business_logic/timeline/timeline.dart';
import 'package:loris/global.dart' as global;
import 'package:http/http.dart' as http;

class PostContext {
  final List<PostModel> ancestors;
  final List<PostModel> descendants;

  PostContext({required this.ancestors, required this.descendants});
}

// first returns ancestors, then decendants
Future<MapEntry<int, PostContext?>> getContextForPost(PostModel model) async {
  final identity = global.settings!.identities[model.identity]!;
  var headers = identity.getAuthHeaders();
  headers.addAll(global.defaultHeaders);
  String id = model.reblogId ?? model.id;
  final uri = Uri(
      scheme: "https",
      host: identity.instanceUrl,
      path: "/api/v1/statuses/$id/context");

  final r = await http.get(uri, headers: headers);
  if (r.statusCode != 200) {
    return MapEntry(r.statusCode, null);
  }

  final json = jsonDecode(r.body);
  List<dynamic> ancestors = json["ancestors"]!;
  List<dynamic> descendants = json["descendants"]!;

  return MapEntry(
      r.statusCode,
      PostContext(
        ancestors: ancestors
            .map((e) => PostModel.fromJson(e, model.identity))
            .toList(),
        descendants: descendants
            .map((e) => PostModel.fromJson(e, model.identity))
            .toList(),
      ));
}