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/*jshint esversion: 6 */
const path = require('path');
const yaml = require('yaml');
const types = require('yaml/types');
const fs = require('fs-extra');
types.strOptions.fold.lineWidth = 0;

// Next, for V4:
// ============================================================================
// ============================================================================
// *********** THIS IS ONLY TO BE DONE AFTER CAPROVER 1.8 RELEASE *************
// ============================================================================
// ============================================================================
// 
// 1- DUPLICATE this script. The new script is to ONLY read from /public/v4/*.yaml
// 2- Test with a new YAML file
// 3- Write script to convert all v2 JSON to V4 yaml and place them in /public/v4/*.yaml
// 4- Update readme!!!!
// 5- Push all 3 steps above at the same time to GITHUB

const pathOfPublic = path.join(__dirname, '..', `public`);

const pathOfDist = path.join(__dirname, '..', `dist`);

const pathOfDistV2 = path.join(pathOfDist, 'v2');
const pathOfDistV3 = path.join(pathOfDist, 'v3');
const pathOfDistV4 = path.join(pathOfDist, 'v4');

const pathOfSourceDirectoryV2 = path.join(pathOfPublic, 'v2');
const pathOfSourceDirectoryAppsV2 = path.join(pathOfSourceDirectoryV2, 'apps');
const pathOfSourceDirectoryLogosV2 = path.join(pathOfSourceDirectoryV2, 'logos');



function convertV2toV4(v2String) {
    const parsed = JSON.parse(v2String);
    if (`${parsed.captainVersion}` !== '2') {
        throw new Error('CaptainVersion must be 2 for this conversion');
    }

    function moveProperty(propertyName) {
        parsed.caproverOneClickApp[propertyName] = parsed[propertyName];
        parsed[propertyName] = undefined;
    }

    parsed.services = parsed.dockerCompose.services;
    parsed.dockerCompose = undefined;

    parsed.captainVersion = 4;
    parsed.caproverOneClickApp = {};

    moveProperty('variables');
    moveProperty('instructions');
    moveProperty('displayName');
    moveProperty('isOfficial');
    moveProperty('description');
    moveProperty('documentation');

    Object.keys(parsed.services).forEach(serviceName => {
        const service = parsed.services[serviceName];
        if (service.containerHttpPort) {
            service.caproverExtra = service.caproverExtra || {};
            service.caproverExtra.containerHttpPort = service.containerHttpPort;
        }
        if (service.dockerfileLines) {
            service.caproverExtra = service.caproverExtra || {};
            service.caproverExtra.dockerfileLines = service.dockerfileLines;
        }
        if (service.notExposeAsWebApp) {
            service.caproverExtra = service.caproverExtra || {};
            service.caproverExtra.notExposeAsWebApp = service.notExposeAsWebApp;
        }
        service.containerHttpPort = undefined;
        service.dockerfileLines = undefined;
        service.notExposeAsWebApp = undefined;
    });


    return JSON.parse(JSON.stringify(parsed));
}


function buildDist() {
    return fs.readdir(pathOfSourceDirectoryAppsV2)
        .then(function (appsFileNames) { // [ app1.json app2.json .... ]

                appsFileNames.forEach(appFileName => {
                        const pathOfAppFileInSource = path.join(pathOfSourceDirectoryAppsV2, appFileName);

                        //v4
                        const pathOfSourceDirectoryV4 = path.join(pathOfPublic, 'v4');
                        const contentString = fs.readFileSync(pathOfAppFileInSource);

                        fs.outputFileSync(path.join(pathOfSourceDirectoryV4, `apps`, appFileName.split('.')[0] + '.yml'), yaml.stringify(convertV2toV4(contentString)));
                        fs.moveSync(path.join(pathOfSourceDirectoryV2, `logos`, appFileName.split('.')[0] + '.png'),
                            path.join(pathOfSourceDirectoryV4, `logos`, appFileName.split('.')[0] + '.png'));
                        fs.removeSync(path.join(pathOfSourceDirectoryV2, `apps`, appFileName.split('.')[0] + '.json'));
                        });

                });
        }


    Promise.resolve()
        .then(function () {
            return buildDist();
        })
        .catch(function (err) {
            console.error(err);
            process.exit(127);
        });