// Debug
const { DebugBuilder } = require("../utilities/debugBuilder.js");
const log = new DebugBuilder("client", "httpRequests");
// Config
require('dotenv').config();
// Modules
const http = require("http");
const { isJsonString } = require("./utilities.js");

exports.requestOptions = class requestOptions {
    constructor(path, method, hostname = undefined, headers = undefined, port = undefined) {
        if (["POST", "PUT"].includes(method)){
            log.VERBOSE("Hostname Vars: ", hostname, process.env.SERVER_HOSTNAME, process.env.SERVER_IP);
            if (hostname) this.hostname = hostname;
            if (!this.hostname && process.env.SERVER_HOSTNAME) this.hostname = process.env.SERVER_HOSTNAME;
            if (!this.hostname && process.env.SERVER_IP) this.hostname = process.env.SERVER_IP;
            if (!this.hostname) throw new Error("No server hostname / IP was given when creating a request");
            this.path = path;
            this.port = port ?? process.env.SERVER_PORT;
            this.method = method;
            this.headers = headers ?? {
                'Content-Type': 'application/json',
            };
        }
    }
}

/**
 * Send the HTTP request to the server
 * @param requestOptions
 * @param data
 * @param callback
 */
exports.sendHttpRequest = function sendHttpRequest(requestOptions, data, callback){
    log.DEBUG("Sending a request to: ", requestOptions.hostname, requestOptions.port)
    // Create the request
    const req = http.request(requestOptions, res => {
        res.on('data', (data) => {
            const responseObject = {
                "statusCode": res.statusCode,
                "body": (isJsonString(data.toString())) ? JSON.parse(data.toString()) : data.toString()
            };
            log.VERBOSE("Response Object: ", responseObject);
            callback(responseObject);
        })
    }).on('error', err => {
        if (err.code === "ECONNREFUSED"){
            // Bot refused connection, assumed offline
            log.WARN("Connection Refused");
        }
        else log.ERROR('Error: ', err.message, err);
        callback(undefined);
        // TODO need to handle if the server is down
    })

    // Write the data to the request and send it
    req.write(data);
    req.end();
}

exports.onHttpError = function onHttpError(httpStatusCode) {
    switch(httpStatusCode){
        case 404:
            // Endpoint not found
            log.WARN("404 received");
            break;
        default:
            // Unhandled HTTP error code
            log.ERROR("HTTP request returned with status: ", httpStatusCode)
            break;
    }

}