import 'dart:convert';
import 'dart:io';

import 'package:Envelope/models/text_messages.dart';
import 'package:http/http.dart' as http;
import 'package:sqflite/sqflite.dart';
import 'package:uuid/uuid.dart';

import '/models/conversation_users.dart';
import '/models/conversations.dart';
import '/models/messages.dart';
import '/models/my_profile.dart';
import '/utils/storage/database.dart';
import '/utils/storage/session_cookie.dart';

Future<void> sendMessage(Conversation conversation, { String? data, List<File>? files }) async {
  MyProfile profile = await MyProfile.getProfile();

  var uuid = const Uuid();
  final String messageId = uuid.v4();

  ConversationUser currentUser = await getConversationUser(conversation, profile.id);

  List<Map<String, dynamic>> messagesToAdd = [];

  if (data != null) {
    messagesToAdd.add({ 'text': data });
  }

  if (files != null && files.isNotEmpty) {
    for (File file in files) {
      messagesToAdd.add({ 'file': file });
    }
  }

  var message = TextMessage(
      id: messageId,
      symmetricKey: '',
      userSymmetricKey: '',
      senderId: currentUser.userId,
      senderUsername: profile.username,
      text: data!,
      associationKey: currentUser.associationKey,
      createdAt: DateTime.now().toIso8601String(),
      failedToSend: false,
  );

  final db = await getDatabaseConnection();

  await db.insert(
      'messages',
      message.toMap(),
      conflictAlgorithm: ConflictAlgorithm.replace,
  );

  String sessionCookie = await getSessionCookie();

  message.payloadJson(conversation, messageId)
      .then((messageJson) async {
        return http.post(
            await MyProfile.getServerUrl('api/v1/auth/message'),
            headers: <String, String>{
              'Content-Type': 'application/json; charset=UTF-8',
              'cookie': sessionCookie,
            },
            body: messageJson,
        );
      })
      .then((resp) {
        if (resp.statusCode != 200) {
          throw Exception('Unable to send message');
        }
      })
      .catchError((exception) {
        message.failedToSend = true;
        db.update(
            'messages',
            message.toMap(),
            where: 'id = ?',
            whereArgs: [message.id],
        );
        throw exception;
      });
}

Future<void> updateMessageThread(Conversation conversation, {MyProfile? profile}) async {
  profile ??= await MyProfile.getProfile();
  ConversationUser currentUser = await getConversationUser(conversation, profile.id);

  var resp = await http.get(
      await MyProfile.getServerUrl('api/v1/auth/messages/${currentUser.associationKey}'),
      headers: {
        'cookie': await getSessionCookie(),
      }
  );

  if (resp.statusCode != 200) {
    throw Exception(resp.body);
  }

  List<dynamic> messageThreadJson = jsonDecode(resp.body);

  final db = await getDatabaseConnection();

  for (var i = 0; i < messageThreadJson.length; i++) {
    var message = TextMessage.fromJson(
        messageThreadJson[i] as Map<String, dynamic>,
        profile.privateKey!,
    );

    ConversationUser messageUser = await getConversationUser(conversation, message.senderId);
    message.senderUsername = messageUser.username;

    await db.insert(
        'messages',
        message.toMap(),
        conflictAlgorithm: ConflictAlgorithm.replace,
    );
  }
}

Future<void> updateMessageThreads({List<Conversation>? conversations}) async {
  // try {
    MyProfile profile = await MyProfile.getProfile();

    conversations ??= await getConversations();

    for (var i = 0; i < conversations.length; i++) {
      await updateMessageThread(conversations[i], profile: profile);
    }
  // } catch(SocketException) {
  //   return;
  // }
}