import axios from 'axios';
import {AXIOS} from '../common/config/env.config';
import {AxiosInstance} from 'axios';
import {AUTH} from '../common/config/app.config';

export class AxiosService {

    private headers: any = {
        'Accept': AXIOS.ACCEPT,
        'Content-type': AXIOS.CONTENT_TYPE,
    };

    private axios: AxiosInstance;

    constructor(baseURL: any) {
        this.axios = axios.create({
            baseURL,
            timeout: AXIOS.TIMEOUT,
        });
    }

    get(url: string, config?: any) {
        const headers = this.getHeader();
        return this.axios
                   .get(url, Object.assign(config || {}, {headers}))
                   .then(_handleSuccess)
                   .catch(_handleError);
    }

    post(url: string, config?: any) {
        const headers = this.getHeader();
        return this.axios
                   .post(url, config, {headers})
                   .then(_handleSuccess)
                   .catch(_handleError);
    }

    private getHeader() {
        return Object.assign({
            Authorization: `Bearer ${sessionStorage.getItem(AUTH.GET_AUTH_KEY)}`,
        }, this.headers);
    }
}

function _handleSuccess(result: any) {
    return result.data;
}

function _handleError(e: any) {
    if (e.response.data.error) {
        throw e.response.data.error;
    } else {
        throw Error(e);
    }

}