103 lines
3.3 KiB
TypeScript
103 lines
3.3 KiB
TypeScript
|
import type { Endpoints } from './api.types';
|
||
|
|
|
||
|
|
const MK_API_ERROR = Symbol();
|
||
|
|
|
||
|
|
export type APIError = {
|
||
|
|
id: string;
|
||
|
|
code: string;
|
||
|
|
message: string;
|
||
|
|
kind: 'client' | 'server';
|
||
|
|
info: Record<string, any>;
|
||
|
|
};
|
||
|
|
|
||
|
|
export function isAPIError(reason: any): reason is APIError {
|
||
|
|
return reason[MK_API_ERROR] === true;
|
||
|
|
}
|
||
|
|
|
||
|
|
export type FetchLike = (input: string, init?: {
|
||
|
|
method?: string;
|
||
|
|
body?: string;
|
||
|
|
credentials?: RequestCredentials;
|
||
|
|
cache?: RequestCache;
|
||
|
|
headers: {[key in string]: string}
|
||
|
|
}) => Promise<{
|
||
|
|
status: number;
|
||
|
|
json(): Promise<any>;
|
||
|
|
}>;
|
||
|
|
|
||
|
|
type IsNeverType<T> = [T] extends [never] ? true : false;
|
||
|
|
|
||
|
|
type StrictExtract<Union, Cond> = Cond extends Union ? Union : never;
|
||
|
|
|
||
|
|
type IsCaseMatched<E extends keyof Endpoints, P extends Endpoints[E]['req'], C extends number> =
|
||
|
|
IsNeverType<StrictExtract<Endpoints[E]['res']['$switch']['$cases'][C], [P, any]>> extends false ? true : false;
|
||
|
|
|
||
|
|
type GetCaseResult<E extends keyof Endpoints, P extends Endpoints[E]['req'], C extends number> =
|
||
|
|
StrictExtract<Endpoints[E]['res']['$switch']['$cases'][C], [P, any]>[1];
|
||
|
|
|
||
|
|
export class APIClient {
|
||
|
|
public origin: string;
|
||
|
|
public credential: string | null | undefined;
|
||
|
|
public fetch: FetchLike;
|
||
|
|
|
||
|
|
constructor(opts: {
|
||
|
|
origin: APIClient['origin'];
|
||
|
|
credential?: APIClient['credential'];
|
||
|
|
fetch?: APIClient['fetch'] | null | undefined;
|
||
|
|
}) {
|
||
|
|
this.origin = opts.origin;
|
||
|
|
this.credential = opts.credential;
|
||
|
|
// ネイティブ関数をそのまま変数に代入して使おうとするとChromiumではIllegal invocationエラーが発生するため、
|
||
|
|
// 環境で実装されているfetchを使う場合は無名関数でラップして使用する
|
||
|
|
this.fetch = opts.fetch || ((...args) => fetch(...args));
|
||
|
|
}
|
||
|
|
|
||
|
|
public request<E extends keyof Endpoints, P extends Endpoints[E]['req']>(
|
||
|
|
endpoint: E, params: P = {} as P, credential?: string | null | undefined,
|
||
|
|
): Promise<Endpoints[E]['res'] extends { $switch: { $cases: [any, any][]; $default: any; }; }
|
||
|
|
?
|
||
|
|
IsCaseMatched<E, P, 0> extends true ? GetCaseResult<E, P, 0> :
|
||
|
|
IsCaseMatched<E, P, 1> extends true ? GetCaseResult<E, P, 1> :
|
||
|
|
IsCaseMatched<E, P, 2> extends true ? GetCaseResult<E, P, 2> :
|
||
|
|
IsCaseMatched<E, P, 3> extends true ? GetCaseResult<E, P, 3> :
|
||
|
|
IsCaseMatched<E, P, 4> extends true ? GetCaseResult<E, P, 4> :
|
||
|
|
IsCaseMatched<E, P, 5> extends true ? GetCaseResult<E, P, 5> :
|
||
|
|
IsCaseMatched<E, P, 6> extends true ? GetCaseResult<E, P, 6> :
|
||
|
|
IsCaseMatched<E, P, 7> extends true ? GetCaseResult<E, P, 7> :
|
||
|
|
IsCaseMatched<E, P, 8> extends true ? GetCaseResult<E, P, 8> :
|
||
|
|
IsCaseMatched<E, P, 9> extends true ? GetCaseResult<E, P, 9> :
|
||
|
|
Endpoints[E]['res']['$switch']['$default']
|
||
|
|
: Endpoints[E]['res']>
|
||
|
|
{
|
||
|
|
const promise = new Promise((resolve, reject) => {
|
||
|
|
this.fetch(`${this.origin}/api/${endpoint}`, {
|
||
|
|
method: 'POST',
|
||
|
|
body: JSON.stringify({
|
||
|
|
...params,
|
||
|
|
i: credential !== undefined ? credential : this.credential,
|
||
|
|
}),
|
||
|
|
headers: {
|
||
|
|
'Content-Type': 'application/json',
|
||
|
|
},
|
||
|
|
credentials: 'omit',
|
||
|
|
cache: 'no-cache',
|
||
|
|
}).then(async (res) => {
|
||
|
|
const body = res.status === 204 ? null : await res.json();
|
||
|
|
|
||
|
|
if (res.status === 200) {
|
||
|
|
resolve(body);
|
||
|
|
} else if (res.status === 204) {
|
||
|
|
resolve(null);
|
||
|
|
} else {
|
||
|
|
reject({
|
||
|
|
[MK_API_ERROR]: true,
|
||
|
|
...body.error,
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}).catch(reject);
|
||
|
|
});
|
||
|
|
|
||
|
|
return promise as any;
|
||
|
|
}
|
||
|
|
}
|