rajangdavis/osvc_node

const Validations = require('./Validations');

module.exports ={
    
    optionsFinalize : (verb,obj,patchRequest = false) => {
        if(obj.url == undefined){
            obj.url = '';
        }
        _checkAnnotation(obj);
        return _optionsObject(verb, obj, patchRequest);
    },
}

const _optionsObject = (verb, obj, patchRequest) =>{
    let optionsHash = {
        method:verb,
        url: _clientUrl(obj.client, obj.url),
        headers: _headersHash(obj, patchRequest),
        data: obj.json
    };
    return _noSSLCheck(obj, optionsHash);
}

const _noSSLCheck = function(object,optionsHash){
    if(object.client.no_ssl_verify === true){
        const https = require("https");
        optionsHash.httpsAgent = new https.Agent({  
          rejectUnauthorized: false
        });
    }
    return optionsHash;
}

const _clientUrl = (obj, resourceUrl = undefined) => {

    let urlString = 'https://';

    let host = obj.interface +".";
    let path = '/services/rest/connect/'


    if(obj['demo_site'] === true){
        host += "rightnowdemo.com";
    }else{
        host += "custhelp.com";
    }

    urlString += host;
    path += (obj['version'] + "/");
    urlString += path;

    if(resourceUrl != undefined)
        urlString += resourceUrl;

    return urlString;
}

const _optionalHeaders = (obj, headersHash) =>{

    if(obj.exclude_null === true){
        headersHash['prefer'] = 'exclude-null-properties';
    }

    if(obj.next_request != undefined && obj.next_request > 0 && typeof obj.next_request == "number"){
        headersHash['osvc-crest-next-request-after'] = obj.next_request;
    }

    if(obj.schema === true){
        headersHash['Accept'] = 'application/schema+json';
    }

    if(obj.utc_time === true){
        headersHash['OSvC-CREST-Time-UTC'] = 'yes';
    }

    if(obj.annotation != undefined){
        _checkAnnotation(obj);
        headersHash['OSvC-CREST-Application-Context'] = obj.annotation;
    }

    return headersHash;
}

const _headersHash = (obj, patchRequest = false) => {

    let client = obj.client;
    let headersHash    = _setConfigAuth(client);

    headersHash = _suppressionCheck(client,headersHash);

    if (client.access_token != undefined){
        headersHash['osvc-crest-api-access-token'] = client.access_token;
    }

    if (patchRequest === true){
        headersHash['X-HTTP-Method-Override'] = 'PATCH';
    }
    
    return _optionalHeaders(obj, headersHash);
}

const _suppressionCheck = (client, headersHash) => {

    if(client.suppress_rules === true){
        headersHash['OSvC-CREST-Suppress-Rules'] = true;
    }
    if(client.suppress_events === true){
        headersHash['OSvC-CREST-Suppress-ExternalEvents'] = true;
    }
    if(client.suppress_all === true){
        headersHash['OSvC-CREST-Suppress-All'] = true;
    }

    return headersHash;
}


const _setConfigAuth = (obj) => {
    
    let headersHash = {};

    if(obj.username != undefined && obj.password != undefined ){
        let encryptedCred = Buffer.from(obj.username + ":" + obj.password).toString("base64");
        headersHash['Authorization'] = `Basic ${encryptedCred}`
    }
    if(obj.session != undefined){
        headersHash['Authorization'] = `Session ${obj.session}`
    }

    if(obj.oauth != undefined){
        headersHash['Authorization'] = `Bearer ${obj.oauth}`
    }

    return headersHash;
}

const _checkAnnotation = obj =>{
    if((obj.client.version == "v1.4" || obj.client.version == "latest") && obj.annotation == undefined){
        let example = "\n\nconst Client = require('osvc_node');\nconst env = process.env;\n\nconst rn_client = Client({\n\tusername: env['OSC_ADMIN'],\n\tpassword: env['OSC_PASSWORD'],\n\tinterface: env['OSC_SITE'],\n\tversion: 'latest',\n});\n\nvar options = {\n\tclient: rn_client,\n\t\033[32mannotation: 'Annotation to describe this HTTP request'\033[0m\n}\n";
        return Validations.customError("An annotation property must be set in the options object when CCOM version is set to 'v1.4' or 'latest'.", example);
    }else if(obj.annotation != undefined && (obj.annotation.length > 40 || obj.annotation.length == 0)){
        let example = "\n\nconst Client = require('osvc_node');\nconst env = process.env;\n\nconst rn_client = Client({\n\tusername: env['OSC_ADMIN'],\n\tpassword: env['OSC_PASSWORD'],\n\tinterface: env['OSC_SITE'],\n\tversion: 'latest',\n});\n\nvar options = {\n\tclient: rn_client,\n\t\033[32mannotation: 'Annotation to describe this HTTP request'\033[0m\n}\n";
        return Validations.customError("An annotation must be between 0 and 40 characters.", example);
    }
}