74 lines
2.6 KiB
TypeScript
74 lines
2.6 KiB
TypeScript
import * as fs from 'fs';
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import { ILocalUser } from '../../models/entities/user';
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import { IEndpointMeta } from './endpoints';
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import { ApiError } from './error';
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import { SchemaType } from '../../misc/schema';
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import { AccessToken } from '../../models/entities/access-token';
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// TODO: defaultが設定されている場合はその型も考慮する
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type Params<T extends IEndpointMeta> = {
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[P in keyof T['params']]: NonNullable<T['params']>[P]['transform'] extends Function
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? ReturnType<NonNullable<T['params']>[P]['transform']>
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: ReturnType<NonNullable<T['params']>[P]['validator']['get']>[0];
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};
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export type Response = Record<string, any> | void;
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type executor<T extends IEndpointMeta> =
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(params: Params<T>, user: T['requireCredential'] extends true ? ILocalUser : ILocalUser | null, token: AccessToken | null, file?: any, cleanup?: Function) =>
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Promise<T['res'] extends undefined ? Response : SchemaType<NonNullable<T['res']>>>;
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// TODO: API関数に user まるごと渡すのではなくユーザーIDなどの最小限のプロパティだけ渡すようにしたい(キャッシュとか考えないでよくなるため)
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export default function <T extends IEndpointMeta>(meta: T, cb: executor<T>)
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: (params: any, user: T['requireCredential'] extends true ? ILocalUser : ILocalUser | null, token: AccessToken | null, file?: any) => Promise<any> {
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return (params: any, user: T['requireCredential'] extends true ? ILocalUser : ILocalUser | null, token: AccessToken | null, file?: any) => {
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function cleanup() {
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fs.unlink(file.path, () => {});
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}
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if (meta.requireFile && file == null) return Promise.reject(new ApiError({
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message: 'File required.',
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code: 'FILE_REQUIRED',
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id: '4267801e-70d1-416a-b011-4ee502885d8b',
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}));
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const [ps, pserr] = getParams(meta, params);
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if (pserr) {
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if (file) cleanup();
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return Promise.reject(pserr);
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}
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return cb(ps, user, token, file, cleanup);
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};
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}
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function getParams<T extends IEndpointMeta>(defs: T, params: any): [Params<T>, ApiError | null] {
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if (defs.params == null) return [params, null];
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const x: any = {};
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let err: ApiError | null = null;
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Object.entries(defs.params).some(([k, def]) => {
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const [v, e] = def.validator.get(params[k]);
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if (e) {
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err = new ApiError({
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message: 'Invalid param.',
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code: 'INVALID_PARAM',
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id: '3d81ceae-475f-4600-b2a8-2bc116157532',
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}, {
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param: k,
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reason: e.message
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});
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return true;
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} else {
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if (v === undefined && def.hasOwnProperty('default')) {
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x[k] = def.default;
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} else {
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x[k] = v;
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}
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if (def.transform) x[k] = def.transform(x[k]);
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return false;
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}
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});
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return [x, err];
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}
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