/**
 * @swagger
 * /api/documents/download/{id}:
 *   get:
 *     tags:
 *      - Documents
 *     description: Get document
 *     parameters:
 *      - name: id
 *        in: path
 *        description: iShare ID
 *        type: string
 *        required: true
 *        default: A41567436
 *      - name: hash
 *        in: query
 *        description: Hash string
 *        default: e0a1c9cd2817826a25bca67e60b807eae747cbed769e3ec42cf997541c32be71
 *     responses:
 *       200:
 *         description: Success
 */

import axios from "axios";
import CryptoJS from "crypto-js";
import { getToken, consoleLogger } from "../../../../actions";

const WORDKEY = process.env.HASHKEY;
const accessTokenEndpoint = process.env.ACCESS_TOKEN_ENDPOINT;
const tenantId = process.env.TENANT;

const WEBAPI_URL =
    process.env.RELAY_ROOT ||
    "https://dev-pedw-ns.servicebus.windows.net/dev-pedw-hc/";

const hashAPIPath = (queryPath) => {
    var hashlink = CryptoJS.HmacSHA256(
        queryPath,
        CryptoJS.enc.Hex.parse(WORDKEY)
    );
    hashlink = hashlink.toString(CryptoJS.enc.Hex);

    //return "&hash=" + hashlink;

    return (queryPath.indexOf("?") > -1 ? "&hash=" : "?hash=") + hashlink;
};

const azureHeadersPaged = (access_token) => {
    return {
        headers: {
            "OData-MaxVersion": "4.0",
            "OData-Version": "4.0",
            "Accept": "application/json;odata.metadata=none",
            "Prefer":
                'odata.include-annotations="*",return=representation, odata.maxpagesize=10',
            "Content-Type": "application/json",
            "Authorization": "Bearer " + access_token,
        },
    };
};

export default async function ApiProxy(req, res) {
    var token = await getToken();

    var docRef = req.query;

    var queryUrl = "documents/download/" + docRef.id + "?hash=" + docRef.hash;

    const configDocument = (access_token) => {
        return {
            headers: {
                "OData-MaxVersion": "4.0",
                "OData-Version": "4.0",
                "Accept": "application/json",
                "Prefer": 'odata.include-annotations="*",return=representation',
                "Content-Type": "application/json",
                "Authorization": "Bearer " + access_token,
            },
            responseType: "arraybuffer",
        };
    };

    return axios
        .get(
            WEBAPI_URL + queryUrl, // + hashAPIPath(queryUrl),
            configDocument(token.access_token)
        )
        .then((response) => {
            const bytes = response.data.byteLength;
            console.log(bytes);

            res.setHeader(
                "content-disposition",
                "attachment; filename=" +
                    response.headers["content-disposition"].split(
                        "filename="
                    )[1]
            );
            return res.status(200).send(response.data);
        })
        .then(() => {
            console.log("has downloaded");

            return "downloadComplete";
        })
        .catch((err) => {
            console.log(consoleLogger(err));
            res.status(400).json(err);
        });
}