80 lines
2.2 KiB
TypeScript
80 lines
2.2 KiB
TypeScript
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/**
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* Utils
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*/
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export class Util {
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/**
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* Sorts JSON object.
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*/
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static sortJSON(object: any) {
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if (object instanceof Array) {
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for (let i = 0; i < object.length; i++) {
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object[i] = Util.sortJSON(object[i]);
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}
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return object;
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}
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if (typeof object !== 'object' || object === null) return object;
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let keys = Object.keys(object);
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keys = keys.sort();
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const newObject: {[key: string]: any} = {};
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for (let i = 0; i < keys.length; i++) {
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newObject[keys[i]] = Util.sortJSON(object[keys[i]]);
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}
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return newObject;
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}
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/**
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* Marshal object into gql 'attributes' variable.
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*/
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static toGQLAttributes(object: any) {
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const vars: any[] = [];
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Object.keys(object).forEach(key => {
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let type: string = typeof object[key];
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if (object[key] === null) {
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vars.push({ key, value: { 'null': true } });
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} else if (type === 'number') {
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type = (object[key] % 1 === 0) ? 'int' : 'float';
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vars.push({ key, value: { [type]: object[key] } });
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} else if (type === 'string') {
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vars.push({ key, value: { 'string': object[key] } });
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} else if (type === 'boolean') {
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vars.push({ key, value: { 'boolean': object[key] } });
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} else if (type === 'object') {
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const nestedObject = object[key];
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if (nestedObject['/'] !== undefined) {
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vars.push({ key, value: { 'reference': { id: nestedObject['/'] } } });
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}
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}
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});
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return vars;
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}
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/**
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* Unmarshal attributes array to object.
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*/
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static fromGQLAttributes(attributes: any[] = []) {
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const res: {[key: string]: any} = {};
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attributes.forEach(attr => {
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if (attr.value.null) {
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res[attr.key] = null;
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} else if (attr.value.json) {
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res[attr.key] = JSON.parse(attr.value.json);
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} else if (attr.value.reference) {
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// Convert GQL reference to IPLD style link.
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const ref = attr.value.reference;
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res[attr.key] = { '/': ref.id };
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} else {
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const { values, null: n, ...types } = attr.value;
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const value = Object.values(types).find(v => v !== null);
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res[attr.key] = value;
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}
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});
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return res;
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}
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}
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