import fetch from "cross-fetch" ; import { createHmac } from "crypto" ; export default async function goodRxRequest ( path , options ) { if ( ! process . env . GOOD_RX_API_KEY ) throw new Error ( "process.env.GOOD_RX_API_KEY must be set" ) ; const params = queryParams ( { ... options , api_key : process . env . GOOD_RX_API_KEY } ) ; const response = await fetch ( `https://api.goodrx.com${ path }?${ params }&${ sign ( params ) }` ) ; const { data , errors } = await response . json ( ) ; if ( response . ok ) { return data ; } else { return Promise . reject ( errors ) ; } } function queryParams ( options ) { return new URLSearchParams ( options as Record < string , any > ) . toString ( ) ; } function sign ( params ) { if ( ! process . env . GOOD_RX_SECRET_KEY ) throw new Error ( "process.env.GOOD_RX_SECRET_KEY must be set" ) ; const hmac = createHmac ( "sha256" , process . env . GOOD_RX_SECRET_KEY ) ; hmac . update ( params ) ; const digest = hmac . digest ( "base64" ) . replace ( /\+/g , "_" ) . replace ( /\//g , "_" ) ; return `sig=${ encodeURI ( digest ) }` ; } interface ComparePriceOptions { name ? : string ; ndc ? : string ; form ? : string ; dosage ? : number ; quantity ? : number ; manufacturer ? : "brand" | "generic" | "match" ; } export function comparePrice ( medicationRequest , query ? ) { return goodRxRequest ( "/compare-price" , { name : medicationRequest . medicationCodeableConcept ?. text ?. split ( " " ) [ 0 ] , ... query } ) ; } interface ComparePriceJSONResponse { brand : string [ ] ; generic : string [ ] ; display : string ; form : string ; dosage : string ; quantity : number ; prices : number [ ] ; price_detail : { url : ( number | null ) [ ] ; price : number [ ] ; savings : ( string | null ) [ ] ; type : string [ ] ; pharmacy : string [ ] ; } ; url : string ; manufacturer : string ; }