272 lines
7.7 KiB
JavaScript
272 lines
7.7 KiB
JavaScript
var fs = require('fs');
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var reservationJSON = {
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"items": []
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};
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var REGEX_CREATE = /^new$/;
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var REGEX_UPDATE = /^[0-9]+$/;
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var REGEX_DELETE = /^[0-9]+-del$/;
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var REGEX_SHOW = /^[0-9]+-edit$/;
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var REGEX_READ = /^[0-9]+-read$/;
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var REGEX_INT = /^(\-|\+)?([0-9]+)$/;
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var REGEX_EMAIL = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
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var REGEX_TIME = /^(([01][0-9]|2[0-4]):[0-5][0-9])$/;
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var REGEX_DATE = /^([0-9]{4})-(0[0-9]|1[012])-([0-2][0-9]|3[01])$/;
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var LANG = {};
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LANG["ACTIONS"] = {
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1: "Das Reservieren",
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2: "Das Aktualisieren der Informationen",
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3: "Das Löschen der Reservierung",
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4: "Das Anzeigen der Inforationen",
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5: "Das Setzen des Gelesen-Status"
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};
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LANG["ERROR_MESSAGES"] = {
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1: "Das Feld \"Name\" darf nicht leer sein.",
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2: "Das Feld \"Kommentar\" darf nicht leer sein.",
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4: "Das Feld \"Anzahl der Personen\" darf nicht leer und muss eine ganze, positive Zahl sein.",
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8: "Das Feld \"Datum\" darf nicht leer sein und muss einem gültigen Datum im Format JJJJ-MM-TT entsprechen.",
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16: "Das Feld \"Uhrzeit\" darf nicht leer sein und muss einer gültigen Uhrzeit im Format HH:MM entsprechen.",
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32: "Das Feld \"E-Mail\" darf nicht leer und muss eine gültige E-Mail-Adresse sein.",
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64: "Beim Verarbeiten der Anfrage ist ein interner Fehler aufgetreten."
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};
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LANG["MESSAGES"] = {
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"success": "%action% war erfolgreich.",
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"failure": "%action% konnte nicht durchgeführt werden."
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};
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LANG["INTERNAL"] = {
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"noinput": "No input file for reservation JSON specified!"
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};
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var FILENAME = false;
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module.exports.init = function(reservationfile) {
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FILENAME = reservationfile;
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module.exports.loadFile();
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}
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module.exports.loadFile = function() {
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if (!FILENAME) throw LANG["MESSAGES"]["noinput"];
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fs.readFile(FILENAME, 'utf8', function(err, data) {
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if (err) throw err;
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reservationJSON = JSON.parse(data);
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});
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}
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module.exports.saveJSON = function() {
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if (!FILENAME) throw LANG["MESSAGES"]["noinput"];
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fs.writeFile(FILENAME, JSON.stringify(reservationJSON, null, 4), function(err) {
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if(err) {
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console.log(err);
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return false;
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}
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});
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return true;
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}
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module.exports.MenuAction = {
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ERROR: 0,
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CREATE: 1,
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UPDATE: 2,
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DELETE: 3,
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SHOW: 4,
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READ: 5
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}
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module.exports.ErrorCode = {
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SUCCESS: 0,
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NOSTRING_NAME: 1,
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NOSTRING_DESC: 2,
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NONUMBER_PERS: 4,
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NODATE_DATE: 8,
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NOTIME_TIME: 16,
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NOEMAIL_MAIL: 32,
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WRONG_ACTION: 64
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}
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module.exports.ErrorCode["MAX"] = sum(module.exports.ErrorCode);
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module.exports.getStatusMessage = function(errorCode, action) {
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if (action) {
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if (!errorCode) {
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return {
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type: "success",
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message: LANG["MESSAGES"]["success"].replace("%action%", LANG["ACTIONS"][action]),
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reasons: null
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}
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} else {
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var reasons = [];
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for (var i = 1; i < module.exports.ErrorCode["MAX"]; i=i*2) {
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if (errorCode & i) { // bit-wise comparing
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reasons.push(LANG["ERROR_MESSAGES"][i]);
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}
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}
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return {
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type: "danger",
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message: LANG["MESSAGES"]["failure"].replace("%action%", LANG["ACTIONS"][action]),
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reasons: reasons
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}
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}
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} else {
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return null;
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}
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}
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module.exports.determineAction = function(nametag) {
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if (nametag && REGEX_CREATE.test(nametag)) { // new
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return module.exports.MenuAction.CREATE;
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} else if (nametag && REGEX_UPDATE.test(nametag)) { // update
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return module.exports.MenuAction.UPDATE;
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} else if (nametag && REGEX_DELETE.test(nametag)) { // delete
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return module.exports.MenuAction.DELETE;
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} else if (nametag && REGEX_SHOW.test(nametag)) { // show
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return module.exports.MenuAction.SHOW;
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} else if (nametag && REGEX_READ.test(nametag)) { // read
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return module.exports.MenuAction.READ;
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}
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return module.exports.MenuAction.ERROR;
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}
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module.exports.checkValidity = function(name, desc, person, email, date, time) {
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var errorCode = 0;
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if (!name || !(typeof name === 'string' || name instanceof String))
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errorCode += module.exports.ErrorCode.NOSTRING_NAME;
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if (!desc || !(typeof desc === 'string' || desc instanceof String))
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errorCode += module.exports.ErrorCode.NOSTRING_DESC;
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if (isNaN(filterInt(person)))
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errorCode += module.exports.ErrorCode.NONUMBER_PERS;
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if (!REGEX_EMAIL.test(email))
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errorCode += module.exports.ErrorCode.NOEMAIL_MAIL;
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if (!REGEX_DATE.test(date))
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errorCode += module.exports.ErrorCode.NODATE_DATE;
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if (!REGEX_TIME.test(time))
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errorCode += module.exports.ErrorCode.NOTIME_TIME;
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return errorCode;
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}
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module.exports.addValue = function(name, desc, person, email, date, time, nametag) {
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var errorCode = module.exports.checkValidity(name, desc, person, email, date, time);
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var action = module.exports.determineAction(nametag);
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if (action !== module.exports.MenuAction.CREATE) {
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errorCode += module.exports.ErrorCode.WRONG_ACTION;
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}
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if (!errorCode) {
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person = filterInt(person);
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reservationJSON["items"].unshift({
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name: name,
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desc: desc,
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email: email,
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person: person,
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time: time,
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date: date,
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read: false
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});
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module.exports.saveJSON();
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}
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return errorCode;
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}
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module.exports.updateValue = function(name, desc, person, email, date, time, nametag) {
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var errorCode = module.exports.checkValidity(name, desc, person, email, date, time);
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var action = module.exports.determineAction(nametag);
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if (action !== module.exports.MenuAction.UPDATE) {
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errorCode += module.exports.ErrorCode.WRONG_ACTION;
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}
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if (!errorCode) {
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person = filterInt(person);
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var position = splitNameTag(nametag, action);
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reservationJSON["items"][position.id] = {
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name: name,
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desc: desc,
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email: email,
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person: person,
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time: time,
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date: date,
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read: true
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};
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module.exports.saveJSON();
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}
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return errorCode;
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}
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module.exports.deleteValue = function(nametag) {
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var errorCode = module.exports.ErrorCode.SUCCESS;
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var action = module.exports.determineAction(nametag);
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if (action !== module.exports.MenuAction.DELETE) {
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errorCode += module.exports.ErrorCode.WRONG_ACTION;
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}
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if (!errorCode) {
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var position = splitNameTag(nametag, action);
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reservationJSON["items"].splice(position.id, 1);
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module.exports.saveJSON();
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}
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return errorCode;
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}
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module.exports.showValue = function(nametag) {
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var errorCode = module.exports.ErrorCode.SUCCESS;
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var action = module.exports.determineAction(nametag);
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if (action !== module.exports.MenuAction.SHOW) {
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errorCode += module.exports.ErrorCode.WRONG_ACTION;
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}
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if (!errorCode) {
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var position = splitNameTag(nametag, action);
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result = reservationJSON["items"][position.id];
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result.id = position.id;
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return result;
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}
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return errorCode;
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}
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module.exports.readValue = function(nametag) {
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var errorCode = module.exports.ErrorCode.SUCCESS;
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var action = module.exports.determineAction(nametag);
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if (action !== module.exports.MenuAction.READ) {
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errorCode += module.exports.ErrorCode.WRONG_ACTION;
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}
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if (!errorCode) {
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var position = splitNameTag(nametag, action);
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reservationJSON["items"][position.id]["read"] = !reservationJSON["items"][position.id]["read"];
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module.exports.saveJSON();
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}
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return errorCode;
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}
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module.exports.getJSON = function() {
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return reservationJSON;
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}
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var filterInt = function(value) {
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if(REGEX_INT.test(value))
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return Number(value);
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return NaN;
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}
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function sum(obj) {
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var sum = 0;
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for(var el in obj) {
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if(obj.hasOwnProperty(el)) {
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sum += parseFloat(obj[el]);
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}
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}
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return sum;
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}
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var splitNameTag = function(nametag, action) {
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if (action) { // create, update, show, read & delete
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var splitArr = nametag.split("-");
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var result = {};
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result.type = action;
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if (action == module.exports.MenuAction.CREATE) { // create
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result.id = null;
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} else { // update, show, read & delete
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result.id = parseInt(splitArr[0]);
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}
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return result;
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} else {
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return false;
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}
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} |