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import * as request from 'request-promise-native'; |
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import { RequestError } from '../classes/RequestError'; |
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import { EndpointConfiguration } from '../interfaces/common/EndpointConfiguration'; |
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export interface QueryParameters { |
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[key: string]: any; |
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} |
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export interface QueryDateLimiter { |
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start_date?: string; |
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end_date?: string; |
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} |
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/** |
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* Abstract BaseEndpoint Class |
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*/ |
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export abstract class BaseEndpoint { |
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/** |
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* Currently selected page |
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* @var number |
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*/ |
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protected pageNumber: number = 1; |
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/** |
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* Language used to fetch data |
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* @var string |
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*/ |
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protected selectedLanguage: string = 'en-US'; |
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/** |
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* Default endpoint constructor |
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* @param configuration |
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*/ |
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public constructor(private configuration: EndpointConfiguration) {} |
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/** |
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* Get results from the specified page |
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* @param page |
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* @return BaseEndpoint|self|this |
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*/ |
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public page(page: number): this { |
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if (page > 0 && page <= 1000) { |
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this.pageNumber = page; |
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} |
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return this; |
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} |
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/** |
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* Set the language for the API response |
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* @param language |
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*/ |
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public language(language: string): this { |
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this.selectedLanguage = language; |
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return this; |
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} |
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/** |
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* Send GET request to the API |
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* @param path |
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* @param parameters |
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*/ |
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protected sendGetRequest(path: string, parameters: QueryParameters = {}): Promise<any> { |
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const url = this.buildRequestPath(path, parameters); |
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return request({ |
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url, |
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json: true, |
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}) |
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.then((json: any) => json) |
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.catch(({ error }: any) => { |
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const requestUrl = this.buildRequestPath(path, parameters, true); |
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throw new RequestError(error.status_code, error.status_message, requestUrl); |
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}); |
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} |
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/** |
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* Build proper request path and append passed parameters |
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* @param { string } path |
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* @param { QueryParameters } parameters |
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* @param { boolean } omitAPIKey |
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*/ |
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private buildRequestPath(path: string, parameters: QueryParameters, omitAPIKey: boolean = false): string { |
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const requestPath = `${this.configuration.host}/${path}`; |
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const parametersArray: string[] = []; |
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if (omitAPIKey === false) { |
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parametersArray.push(`${encodeURIComponent('api_key')}=${encodeURIComponent(this.configuration.key)}`); |
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} |
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const imageLanguages: [string] = ['en']; |
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const { selectedLanguage } = this; |
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parameters.page = this.pageNumber; |
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parameters.adult = this.configuration.adult; |
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parameters.language = selectedLanguage; |
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if (selectedLanguage.indexOf('-') !== -1) { |
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const lang = selectedLanguage.substr(0, selectedLanguage.indexOf('-')).toLowerCase(); |
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if (!imageLanguages.includes(lang)) { |
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imageLanguages.push(lang); |
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} |
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} |
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parameters.include_image_language = imageLanguages; |
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Object.keys(parameters).forEach((key) => { |
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if (parameters.hasOwnProperty(key)) { |
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let value = parameters[key]; |
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if (Array.isArray(value)) { |
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value = value.join(','); |
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parametersArray.push(`${encodeURIComponent(key)}=${value}`); |
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} else { |
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parametersArray.push(`${encodeURIComponent(key)}=${encodeURIComponent(value)}`); |
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} |
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} |
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}); |
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const requestPathWithParameters = requestPath + '?' + parametersArray.join('&'); |
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return requestPathWithParameters.replace(/\?+$/, ''); |
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} |
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} |
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darki73 /
tmdb-client
