n8n/packages/nodes-base/nodes/Shopify/GenericFunctions.ts

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import {
OptionsWithUri,
} from 'request';
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import {
IExecuteFunctions,
IHookFunctions,
ILoadOptionsFunctions,
IExecuteSingleFunctions,
BINARY_ENCODING
} from 'n8n-core';
import {
IDataObject,
} from 'n8n-workflow';
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import {
snakeCase,
} from 'change-case';
export async function shopifyApiRequest(this: IHookFunctions | IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions, method: string, resource: string, body: any = {}, query: IDataObject = {}, uri?: string, option: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any
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const credentials = this.getCredentials('shopifyApi');
if (credentials === undefined) {
throw new Error('No credentials got returned!');
}
const headerWithAuthentication = Object.assign({},
{ Authorization: ` Basic ${Buffer.from(`${credentials.apiKey}:${credentials.password}`).toString(BINARY_ENCODING)}` });
const options: OptionsWithUri = {
headers: headerWithAuthentication,
method,
qs: query,
uri: uri || `https://${credentials.shopSubdomain}.myshopify.com/admin/api/2019-10${resource}`,
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body,
json: true
};
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if (Object.keys(option).length !== 0) {
Object.assign(options, option);
}
if (Object.keys(body).length === 0) {
delete options.body;
}
if (Object.keys(query).length === 0) {
delete options.qs;
}
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try {
return await this.helpers.request!(options);
} catch (error) {
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if (error.response.body && error.response.body.errors) {
let message = '';
if (typeof error.response.body.errors === 'object') {
for (const key of Object.keys(error.response.body.errors)) {
message+= error.response.body.errors[key];
}
} else {
message = `${error.response.body.errors} |`;
}
const errorMessage = `Shopify error response [${error.statusCode}]: ${message}`;
throw new Error(errorMessage);
}
throw error;
}
}
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export async function shopifyApiRequestAllItems(this: IHookFunctions | IExecuteFunctions| ILoadOptionsFunctions, propertyName: string, method: string, resource: string, body: any = {}, query: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any
const returnData: IDataObject[] = [];
let responseData;
let uri: string | undefined;
do {
responseData = await shopifyApiRequest.call(this, method, resource, body, query, uri, { resolveWithFullResponse: true });
if (responseData.headers.link) {
uri = responseData.headers['link'].split(';')[0].replace('<', '').replace('>','');
}
returnData.push.apply(returnData, responseData.body[propertyName]);
} while (
responseData.headers['link'] !== undefined &&
responseData.headers['link'].includes('rel="next"')
);
return returnData;
}
export function keysToSnakeCase(elements: IDataObject[] | IDataObject) : IDataObject[] {
if (elements === undefined) {
return [];
}
if (!Array.isArray(elements)) {
elements = [elements];
}
for (const element of elements) {
for (const key of Object.keys(element)) {
if (key !== snakeCase(key)) {
element[snakeCase(key)] = element[key];
delete element[key];
}
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}
}
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return elements;
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}