35 lines
1.1 KiB
TypeScript
35 lines
1.1 KiB
TypeScript
import type { RelayAdapter, RelayRequestInput, RelayResponse } from "../libraries/adapter.ts";
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import { RelayError, UnprocessableContentError } from "../libraries/errors.ts";
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export class HttpAdapter implements RelayAdapter {
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#id: number = 0;
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constructor(readonly url: string) {}
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async send({ method, params }: RelayRequestInput): Promise<RelayResponse> {
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const id = this.#id++;
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const res = await fetch(this.url, {
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method: "POST",
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headers: { "content-type": "application/json" },
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body: JSON.stringify({ relay: "1.0", method, params, id }),
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});
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const contentType = res.headers.get("content-type");
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if (contentType !== "application/json") {
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return {
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relay: "1.0",
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error: new UnprocessableContentError(`Invalid 'content-type' in header header, expected 'application/json', received '${contentType}'`),
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id,
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};
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}
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const json = await res.json();
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if ("error" in json) {
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return {
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relay: "1.0",
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error: RelayError.fromJSON(json.error),
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id,
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};
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}
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return json;
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}
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}
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