LearningSalesForceCommerceC.../storefront-reference-architecture/cartridges/modules/server/queryString.js
2021-12-21 10:57:31 -08:00

154 lines
5.9 KiB
JavaScript

'use strict';
/**
* Zips the pref[n|v] http query params
*
* The Platform allows the use of multiple preference names and values to filter search results,
* eg.: http://<sandbox>.com/../Search-Show?prefn1=refinementColor&prefv1=Blue&prefn2=size&prefv2=16
*
* @param {Object} preferences - HTTP query parameters map specific to selected refinement values
* @return {Object} Map of provided preference name/value pairs
*/
function parsePreferences(preferences) {
var params = {};
var count = Math.floor(Object.keys(preferences).length / 2);
var key = '';
var value = '';
for (var i = 1; i < count + 1; i++) {
key = preferences['prefn' + i];
if (preferences['prefmin' + i]) {
value = {
min: preferences['prefmin' + i],
max: preferences['prefmax' + i]
};
} else {
value = preferences['prefv' + i];
}
params[key] = value;
}
return params;
}
/**
* Detect duplicate parameters and be sure to set object[key] as an array of those parameter values
*
* @param {Object} object The object to check for existing values.
* @param {string} key The key to set on object for the new value.
* @param {string} value The new value to be added to object[key].
* @return {Object} Value or array of values if object[key] has already exists.
*/
function parameterToArray(object, key, value) {
var result = value;
if (object[key]) {
result = object[key];
if (!(result instanceof Array)) {
result = [object[key]];
}
result.push(value);
}
return result;
}
var querystring = function (raw) {
var pair;
var left;
var preferences = {};
if (raw && raw.length > 0) {
var qs = raw.substring(raw.indexOf('?') + 1).replace(/\+/g, '%20').split('&');
for (var i = qs.length - 1; i >= 0; i--) {
pair = qs[i].split('=');
left = decodeURIComponent(pair[0]);
if (left.indexOf('dwvar_') === 0) {
left = left.replace(/__/g, '++');
var variableParts = left.split('_');
if (variableParts.length >= 3) {
if (!this.variables) {
this.variables = {};
}
this.variables[variableParts.slice(2).join('_')] = {
id: variableParts[1].replace(/\+\+/g, '_'),
value: decodeURIComponent(pair[1])
};
continue; // eslint-disable-line no-continue
}
} else if (left.indexOf('dwopt_') === 0) {
left = left.replace(/__/g, '++');
var optionParts = left.split('_');
var productId = optionParts[1].replace(/\+\+/g, '_');
var optionId = optionParts.slice(2).join('_');
var selectedOptionValueId = decodeURIComponent(pair[1]);
if (optionParts.length >= 3) {
if (!this.options) {
this.options = [];
}
this.options.push({
optionId: optionId,
selectedValueId: selectedOptionValueId,
productId: productId
});
continue; // eslint-disable-line no-continue
}
} else if (left.indexOf('pref') === 0) {
preferences[left] = decodeURIComponent(pair[1]);
continue; // eslint-disable-line no-continue
}
this[left] = parameterToArray(this, left, decodeURIComponent(pair[1]));
}
}
if (Object.keys(preferences).length) {
this.preferences = parsePreferences(preferences);
}
};
querystring.prototype.toString = function () {
var result = [];
var prefKeyIdx = 1;
var preferences = {};
Object.keys(this).forEach(function (key) {
if (key === 'variables' && this.variables instanceof Object) {
Object.keys(this.variables).forEach(function (variable) {
result.push('dwvar_' +
this.variables[variable].id.replace(/_/g, '__') + '_' +
variable + '=' + encodeURIComponent(this.variables[variable].value));
}, this);
} else if (key === 'options' && this.options instanceof Array) {
this.options.forEach(function (option) {
result.push('dwopt_' +
option.productId.replace(/_/g, '__') + '_' +
option.optionId + '=' + encodeURIComponent(option.selectedValueId));
});
} else if (key === 'preferences' && this.preferences instanceof Object) {
preferences = this.preferences;
Object.keys(preferences).forEach(function (prefKey) {
// Due to the nature of what is passed to this function this may be the literal string "undefined"
if (prefKey !== 'undefined' && preferences[prefKey]) {
result.push('prefn' + prefKeyIdx + '=' + encodeURIComponent(prefKey));
if (preferences[prefKey].min) {
result.push('prefmin' + prefKeyIdx + '=' + encodeURIComponent(preferences[prefKey].min));
result.push('prefmax' + prefKeyIdx + '=' + encodeURIComponent(preferences[prefKey].max));
} else {
result.push('prefv' + prefKeyIdx + '=' + encodeURIComponent(preferences[prefKey]));
}
} else {
var Logger = require('dw/system/Logger');
Logger.warn('We were passed a key "undefined in the preferences object in queryString.js');
}
prefKeyIdx++;
});
} else {
result.push(encodeURIComponent(key) + '=' + encodeURIComponent(this[key]));
}
}, this);
return result.sort().join('&');
};
module.exports = querystring;