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import useSWR, { SWRResponse } from "swr"
const API_URL = import.meta.env.VITE_API_URL
const fetcher = (path: string) => fetch(`${API_URL}${path}`)
.then(res => res.json())
.catch((err) => {
console.error(`An error occurred when fetching API path ${path}`)
console.error(err)
throw err
})
interface Example {
id: string
title: string
content: string
}
export interface APISuccess<D> {
readonly type: "success"
data: D
}
export interface APILoading {
readonly type: "loading"
}
export interface APIFailed<E> {
readonly type: "failed"
error: E
}
export interface APINotYetRequested {
readonly type: "not_yet_requested"
}
export type APIResult<D, E> = APISuccess<D> | APILoading | APIFailed<E> | APINotYetRequested
const mapSWRResult = <D, E>({ data, error }: SWRResponse<D, E>): APIResult<D, E> => {
if (error !== undefined) {
return { type: "failed", error }
}
const isLoading = data === undefined
if (isLoading) {
return { type: "loading" }
}
return { type: "success", data }
}
const postRequest = async <D, E>(path: string, body: any, opts?: any): Promise<APIResult<D, E>> => {
const url = `${API_URL}${path}`
const body_ = typeof body === "string" ? body : JSON.stringify(body)
try {
const resp = await fetch(url, { method: "POST", body: body_, headers: {
"Content-Type": "application/json",
}, ...opts })
if (resp.status >= 400) {
throw new Error(`${url} responded with ${resp.status}: ${resp.text}`)
}
const data = await resp.json()
return { type: "success", data }
} catch (err: any) {
console.error(`An error occurred when POSTing to API path ${path}`)
console.error(err)
return { type: "failed", error: err }
}
}
export const useExamples = () => mapSWRResult<Example[], Error>(
useSWR("/examples", fetcher),
)
export const submitSource = async (text: string) => postRequest<string, Error>(
"/submit",
text,
)
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