import { Method } from 'axios';

import CreateLineRequest from '@nirvana/core/requests/createLine.request';
import GetUserLinesResponse from '@nirvana/core/responses/getUserLines.response';
import { Line } from '@nirvana/core/models/line.model';
import LoginResponse from '@nirvana/core/responses/login.response';
import NirvanaResponse from '@nirvana/core/responses/nirvanaResponse';
import UserDetailsResponse from '@nirvana/core/responses/userDetails.response';
import UserSearchResponse from '@nirvana/core/responses/userSearch.response';

// export const localHost = process.env.REACT_APP_API_DOMAIN;

export const localHost = 'http://localhost:5000/api';

export default class NirvanaApi {
  // auth token from google that our backend will use
  static _jwtToken?: string;

  static async fetch<T>(
    url: string,
    method: Method,
    privateRoute = false,
    body: object = null
  ) {
    // use the auth token if it's a private route
    // error if no auth token and it's a private route
    // throw error and show message on anything that is an error from the backend

    const fullUrl = localHost + url;

    let res;
    if (privateRoute && !this._jwtToken) throw Error('No jwt token available!');

    if (privateRoute && this._jwtToken) {
      res = await fetch(fullUrl, {
        method: method,
        headers: {
          Authorization: this._jwtToken,
          'Content-Type': 'application/json',
        },
        body: body ? JSON.stringify(body) : null,
      });
    } else {
      res = await fetch(fullUrl);
    }

    if (!res.ok) {
      if (res.status === 401) throw new Error('You are not authorized here');

      throw new Error('Something went wrong');
    }

    return await res.json();
  }
}

async function serverCheck(): Promise<void> {
  return await NirvanaApi.fetch(`/status`, 'GET', false);
}

async function login(reqLoginTokens: {
  accessToken: string;
  idToken: string;
}): Promise<LoginResponse> {
  return await NirvanaApi.fetch(
    `/user/login?access_token=${reqLoginTokens.accessToken}&id_token=${reqLoginTokens.idToken}`,
    'GET',
    false
  );
}

async function authCheck(): Promise<void> {
  return await NirvanaApi.fetch(`/user/authcheck`, 'GET', true);
}

async function getUserDetails(): Promise<UserDetailsResponse> {
  return await NirvanaApi.fetch(`/user`, 'GET', true);
}

async function userSearch(searchQuery: string): Promise<UserSearchResponse> {
  return await NirvanaApi.fetch(
    `/search/users?query=${searchQuery}`,
    'GET',
    true
  );
}

async function getUserLines(): Promise<NirvanaResponse<GetUserLinesResponse>> {
  return await NirvanaApi.fetch<NirvanaResponse<GetUserLinesResponse>>(
    `/lines`,
    'GET',
    true
  );
}

async function getDmByUserId(otherUserId: string): Promise<Line> {
  return await NirvanaApi.fetch(`/lines/dm/${otherUserId}`, 'GET', true);
}

async function createLine(
  request: CreateLineRequest
): Promise<NirvanaResponse<Line>> {
  return await NirvanaApi.fetch(`/lines`, 'POST', true, request);
}

export const ApiCalls = {
  serverCheck,
  login,
  authCheck,
  getUserDetails,
  userSearch,
  getUserLines,
  getDmByUserId,
  createLine,
};