import "../config/api_config.dart";
import "../models/announcement.dart";
import "api_client.dart";
import "mock_data.dart";

class AnnouncementService {
  final ApiClient _client;

  AnnouncementService(this._client);

  Future<List<Announcement>> fetchAnnouncements({
    bool activeOnly = false,
  }) async {
    if (ApiConfig.useMockData) {
      final items = List<Announcement>.from(MockDataStore.announcements);
      if (activeOnly) {
        return items.where((item) => item.active).toList();
      }
      return items;
    }
    final query = activeOnly ? {"active": "true"} : null;
    final data = await _client.getList(ApiConfig.announcements, query: query);
    return data
        .map((item) => Announcement.fromJson(item as Map<String, dynamic>))
        .toList();
  }

  Future<Announcement> createAnnouncement(Announcement announcement) async {
    if (ApiConfig.useMockData) {
      final created = Announcement(
        id: "announcement-${DateTime.now().millisecondsSinceEpoch}",
        title: announcement.title,
        content: announcement.content,
        priority: announcement.priority,
        active: announcement.active,
      );
      MockDataStore.announcements.add(created);
      return created;
    }
    final data = await _client.post(
      ApiConfig.announcements,
      announcement.toJson(),
    );
    return Announcement.fromJson(data);
  }

  Future<Announcement> updateAnnouncement(Announcement announcement) async {
    if (ApiConfig.useMockData) {
      final index = MockDataStore.announcements.indexWhere(
        (item) => item.id == announcement.id,
      );
      if (index != -1) {
        MockDataStore.announcements[index] = announcement;
      }
      return announcement;
    }
    final data = await _client.put(
      "${ApiConfig.announcements}/${announcement.id}",
      announcement.toJson(),
    );
    return Announcement.fromJson(data);
  }

  Future<void> deleteAnnouncement(String id) async {
    if (ApiConfig.useMockData) {
      MockDataStore.announcements.removeWhere((item) => item.id == id);
      return;
    }
    await _client.delete("${ApiConfig.announcements}/$id");
  }
}