import 'package:http/http.dart' as http;
import 'dart:convert';
import 'package:insparkspokalen_ui/models/postModel.dart';
import 'package:flutter/foundation.dart';

class FeedService extends ChangeNotifier {
  final String baseUrl = 'https://group-10-15.pvt.dsv.su.se/mission/post';

  List<PostModel> _posts = [];
  List<PostModel> get posts => _posts;

  /* Future<List<PostModel>> showFeed() async {
    final endpoint = Uri.parse('$baseUrl/all');

    try {
      final response = await http.get(endpoint);
      if (response.statusCode == 200) {
        final List<dynamic> data = jsonDecode(response.body);
        return data.map((json) => PostModel.fromJson(json)).toList();
      } else {
        return [];
      }
    } catch (e) {
      return [];
    }
  } */

  Future<void> loadPosts() async {
    final endpoint = Uri.parse('$baseUrl/all');

    try {
      final response = await http.get(endpoint);
      if (response.statusCode == 200) {
        final List<dynamic> data = jsonDecode(response.body);
        _posts = data.map((json) => PostModel.fromJson(json)).toList();
        notifyListeners();
      } else {
        _posts = [];
        notifyListeners();
      }
    } catch (e) {
      _posts = [];
      notifyListeners();
    }
  }

  Future<PostModel> addPost(PostModel post) async {
    final response = await http.post(
      Uri.parse('$baseUrl/add'),
      headers: {'Content-Type': 'application/json'},
      body: jsonEncode(post.toJson()),
    );

    if (response.statusCode == 200 || response.statusCode == 201) {
      final decoded = jsonDecode(response.body);

      // Om decoded bara är ett heltal, använd det som id
      if (decoded is int) {
        return PostModel(
          id: decoded,
          title: post.title,
          body: post.body,
          filename: post.filename,
          filetype: post.filetype,
          time: post.time,
          locationname: post.locationname,
          latitude: post.latitude,
          longitude: post.longitude,
          points: post.points,
          teamid: post.teamid,
          missionid: post.missionid,
          approved: post.approved,
        );
      } else {
        throw Exception("Oväntat svar från servern: $decoded");
      }
    } else {
      throw Exception("Kunde inte skapa inlägg");
    }
  }

  Future<void> deletePost(PostModel post) async {
    if (post.id == null) {
      throw Exception("Post har inget id och kan inte raderas");
    }

    final endpoint = Uri.parse('$baseUrl/delete/${post.id}');
    final response = await http.delete(endpoint);

    if (response.statusCode != 200) {
      throw Exception("Kunde inte radera inlägg: ${response.body}");
    }
  }

  Future<void> updatePostStatus(PostModel post, PostStatus newStatus) async {
    final endpoint = Uri.parse('$baseUrl/setstatus/${post.id}');

    try {
      final response = await http.put(
        endpoint,
        headers: {"Content-Type": "application/json"},
        body: jsonEncode({
          "approved": newStatus.name,
          "timeupdated": DateTime.now().toIso8601String(),
        }),
      );

      if (response.statusCode != 200) {
        throw Exception(
          "Kunde inte uppdatera status. Servern svarade med ${response.statusCode}",
        );
      }

      // Uppdatera lokalt efter lyckad PUT
      await loadPosts();
    } catch (e) {
      throw Exception("Något gick fel vid statusuppdatering: $e");
    }
  }
}