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import useSWR, { SWRResponse } from "swr"
import { RunnerApi, ExampleApi } from "slam-types"
import { useState } from "react"
const RUNNER_API_URL = String(import.meta.env.VITE_RUNNER_API_URL)
const EXAMPLE_API_URL = String(import.meta.env.VITE_EXAMPLE_API_URL)
const fetcher = (baseUrl: string) => (path: string) => fetch(`${baseUrl}${path}`)
.then(res => res.json())
.catch((err) => {
console.error(`An error occurred when fetching API path ${path}`)
console.error(err)
throw err
})
export interface APISuccess<D> {
readonly type: "success"
data: D
}
export interface APILoading {
readonly type: "loading"
}
export interface APIFailed<E> {
readonly type: "failed"
error: E
}
export interface APINotYetRequested {
readonly type: "not_yet_requested"
}
export type APIResult<D, E> = APISuccess<D> | APILoading | APIFailed<E> | APINotYetRequested
const mapSWRResult = <D, E>({ data, error }: SWRResponse<D, E>): APIResult<D, E> => {
if (error !== undefined) {
return { type: "failed", error }
}
const isLoading = data === undefined
if (isLoading) {
return { type: "loading" }
}
return { type: "success", data }
}
interface BasePostRequest<R> {
baseUrl: string
path: string
body: R
}
const postRequest = async <R, D, E>({ baseUrl, path, body }: BasePostRequest<R>, opts?: any): Promise<APIResult<D, E>> => {
const url = `${baseUrl}${path}`
const body_ = typeof body === "string" ? body : JSON.stringify(body)
try {
const resp = await fetch(url, { method: "POST", body: body_, headers: {
"Content-Type": "application/json",
}, ...opts })
if (resp.status >= 400) {
throw new Error(`${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<ExampleApi.ListResponse.Body, Error>(
useSWR(ExampleApi.ListRequest.path, fetcher(EXAMPLE_API_URL)),
)
export type SubmitResult = APIResult<RunnerApi.SubmitResponse.Body & { roundtripTime: number }, Error>
export const useSubmitSource = () => {
const [result, setResult] = useState<SubmitResult>({ type: "not_yet_requested" })
const submitSource = async (text: string) => {
try {
const startRoundtripTime = performance.now()
setResult({ type: "loading" })
const apiResult = await postRequest<RunnerApi.SubmitRequest.Body, RunnerApi.SubmitResponse.Body, Error>(
{
baseUrl: RUNNER_API_URL,
path: RunnerApi.SubmitRequest.path,
body: {
source: text,
},
},
)
const endRoundtripTime = performance.now()
const roundtripTime = endRoundtripTime - startRoundtripTime
switch (apiResult.type) {
case "success":
setResult({ type: "success", data: { ...apiResult.data, roundtripTime }})
break
case "failed":
setResult({ type: "failed", error: apiResult.error })
break
default:
break
}
} catch (err: any) {
setResult({ type: "failed", error: err })
}
}
return { result, submitSource }
}
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