1+ import axios from 'axios' ;
2+ import { NotFoundError } from '@navikt/dolly-lib' ;
3+
4+ export class ApiError extends Error {
5+ constructor (
6+ public status : number ,
7+ message : string ,
8+ public data ?: unknown
9+ ) {
10+ super ( message ) ;
11+ this . name = 'ApiError' ;
12+ }
13+ }
14+
15+ export class NetworkError extends Error {
16+ constructor ( message : string ) {
17+ super ( message ) ;
18+ this . name = 'NetworkError' ;
19+ }
20+ }
21+
22+ // Shared error handler function
23+ const handleAxiosError = ( error : unknown , url : string ) : never => {
24+ if ( axios . isAxiosError ( error ) ) {
25+ const { response, request } = error ;
26+
27+ if ( response ) {
28+ const { status, data } = response ;
29+ switch ( status ) {
30+ case 400 :
31+ throw new ApiError ( status , `Bad request: ${ data ?. message || 'Invalid input' } , data ) ;
32+ case 401 :
33+ throw new ApiError ( status , 'Unauthorized: Authentication required' , data ) ;
34+ case 403 :
35+ throw new ApiError ( status , 'Forbidden: Insufficient permissions' , data ) ;
36+ case 404 :
37+ if ( data ?. error ) {
38+ throw new Error ( data . error ) ;
39+ }
40+ throw new NotFoundError ( ) ;
41+ default :
42+ if ( status >= 500 ) {
43+ throw new ApiError ( status , `Server error (${ status } , data ) ;
44+ } else {
45+ throw new ApiError ( status , `Request failed with status ${ status } , data ) ;
46+ }
47+ }
48+ } else if ( request ) {
49+ throw new NetworkError ( `Network error: No response received from ${ url } ) ;
50+ }
51+ }
52+
53+ throw new Error ( `Unknown error: ${ error instanceof Error ? error . message : String ( error ) } ) ;
54+ } ;
55+
56+ export const fetcher = async < TResponse extends any = unknown > (
57+ url : string ,
58+ headers : Record < string , string > = { }
59+ ) : Promise < TResponse > => {
60+ try {
61+ const response = await axios . get < TResponse > ( url , { headers } ) ;
62+ return response . data ;
63+ } catch ( error ) {
64+ return handleAxiosError ( error , url ) ;
65+ }
66+ } ;
67+
68+ export const postData = async < TResponse = unknown , TRequest = unknown > (
69+ url : string ,
70+ body : TRequest ,
71+ headers : Record < string , string > = { }
72+ ) : Promise < TResponse > => {
73+ try {
74+ const response = await axios . post < TResponse > ( url , body , { headers } ) ;
75+ return response . data ;
76+ } catch ( error ) {
77+ return handleAxiosError ( error , url ) ;
78+ }
79+ } ;
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