import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:localization/localization.dart';
import 'package:loris/business_logic/account/account.dart';
import 'package:loris/business_logic/timeline/timeline.dart';
import '../../global.dart' as global;
import 'package:http/http.dart' as http;

class NotificationModel implements Comparable {
  late String id;
  late String time;
  late NotificationType type;
  late AccountModel account;
  late PostModel? post;
  late String? accountid;
  NotificationModel.fromJson(Map<String, dynamic> json) {
    post = null;
    time = json["created_at"];
    id = json["id"];
    account = AccountModel.fromJson(json["account"]);
    type = NotificationType.values.firstWhere(
        (element) => element.name == "NotificationType.${json["type"]}");
    if (json["status"] != null) {
      post = PostModel.fromJson(json["status"], id);
    }
  }

  @override
  int compareTo(other) {
    return time.compareTo(other.time);
  }
}

class NotificationData {
  // stores latest post ids for each identity
  // value is null if there is no latest id
  final Map<String, String> latest;
  final List<NotificationModel> models;

  NotificationData(this.latest, this.models);
}

Future<NotificationData> loadOldNotifications(
  Map<String, String>? data,
) async {
  List<NotificationModel> models = [];
  Map<String, String> map = data ?? {};

  for (int i = 0; i < global.settings!.identities.length; i++) {
    final idkey = global.settings!.identities.keys.toList()[i];
    final id = global.settings!.identities[idkey]!;

    Map<String, String> headers = id.getAuthHeaders();
    headers.addAll(global.defaultHeaders);

    Map<String, String> query = {
      "limit": global.settings!.batchSize.toString()
    };
    if (map[idkey] != null) {
      query.addAll({"max_id": map[idkey]!});
    }

    final uri = Uri(
      host: id.instanceUrl,
      path: "/api/v1/notifications",
      scheme: "https",
      queryParameters: query,
    );

    final response = await http.get(
      uri,
      headers: headers,
    );

    // get notifs
    if (response.statusCode == 200) {
      List<dynamic> json = jsonDecode(response.body);
      for (int n = 0; n < json.length; n++) {
        NotificationModel model = NotificationModel.fromJson(json[n]);
        model.accountid = idkey;
        models.add(model);
      }
    }
  }

  // massage list
  models.sort();
  models = models.reversed.toList();
  models.removeRange(global.settings!.batchSize, models.length);

  for (NotificationModel m in models) {
    if (map[m.accountid!] == null) {
      map.addAll({
        m.accountid!: m.id,
      });
    } else if (m.id.compareTo(map[m.accountid]!) < 0) {
      map.addAll({m.accountid!: m.id});
    }
  }

  return NotificationData(map, models);
}

enum NotificationType {
  follow,
  followRequest,
  mention,
  reblog,
  favourite,
  poll,
  status,
}

extension NotificationTypeExtension on NotificationType {
  String get name {
    switch (this) {
      case NotificationType.followRequest:
        return "follow_request";
      default:
        return toString();
    }
  }

  IconData get icon {
    switch (this) {
      case NotificationType.follow:
        return Icons.person_add;
      case NotificationType.followRequest:
        return Icons.person_add;
      case NotificationType.mention:
        return Icons.forum;
      case NotificationType.favourite:
        return Icons.favorite;
      case NotificationType.poll:
        return Icons.poll;
      case NotificationType.reblog:
        return Icons.repeat;
      case NotificationType.status:
        return Icons.forum;
      default:
        return Icons.question_mark;
    }
  }

  String get actionName {
    switch (this) {
      case NotificationType.favourite:
        return "liked-your-post".i18n();
      case NotificationType.follow:
        return "followed-you".i18n();
      case NotificationType.followRequest:
        return "requested-to-folow-you".i18n();
      case NotificationType.mention:
        return "mentioned-you".i18n();
      case NotificationType.reblog:
        return "reblogged-your-post".i18n();
      case NotificationType.status:
        return "made-a-status".i18n();
      case NotificationType.poll:
        return "poll-has-ended".i18n();
      default:
        return "interacted-with-you".i18n();
    }
  }
}