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import type { ApiErrorBody, HttpError } from "@repo/types/http";
import { createError, type DomainError } from "@repo/effect-utils";
export interface EffectRequestPolicy {
timeoutMs?: number;
retries?: number;
}
export const HTTP_STATUS_CODE = {
UNAUTHORIZED: 401,
FORBIDDEN: 403,
NOT_FOUND: 404,
REQUEST_TIMEOUT: 408,
TOO_MANY_REQUESTS: 429,
UNPROCESSABLE_ENTITY: 422,
INTERNAL_SERVER_ERROR: 500,
GATEWAY_TIMEOUT: 504,
} as const;
export const API_ERROR_TEXT = {
REQUEST_FAILED: "Request failed",
UNKNOWN_ERROR: "Unknown error",
requestTimedOut: (timeoutMs: number) =>
`Request timed out after ${timeoutMs}ms`,
} as const;
export const REQUEST_POLICY = {
READ: {
timeoutMs: 15_000,
retries: 2,
},
WRITE: {
timeoutMs: 15_000,
retries: 0,
},
IDEMPOTENT_WRITE: {
timeoutMs: 15_000,
retries: 1,
},
} as const;
type ApiErrorWithShape = ApiErrorBody & {
errors?: Record<string, string[] | string>;
};
const isHttpErrorLike = (error: unknown): error is HttpError<unknown> => {
return (
typeof error === "object" &&
error !== null &&
"ok" in error &&
(error as Record<string, unknown>).ok === false &&
"status" in error
);
};
const getErrorMessage = (error: HttpError<unknown>): string => {
const body = error.data as ApiErrorWithShape | string | undefined;
if (typeof body === "string" && body.length > 0) {
return body;
}
if (body && typeof body === "object" && "message" in body) {
const message = body.message;
Eif (typeof message === "string" && message.length > 0) {
return message;
}
}
return error.statusText || API_ERROR_TEXT.REQUEST_FAILED;
};
const normalizeValidationErrors = (
errors: Record<string, string[] | string> | undefined,
): Record<string, string> | undefined => {
Iif (!errors) return undefined;
const normalized: Record<string, string> = {};
for (const [key, value] of Object.entries(errors)) {
normalized[key] = Array.isArray(value) ? (value[0] ?? "") : value;
}
return normalized;
};
const isRetryable = (error: DomainError): boolean => {
Iif (error._tag === "TimeoutError") return true;
if (error._tag === "NetworkError") {
const statusCode = error.statusCode;
return (
statusCode == null ||
statusCode >= HTTP_STATUS_CODE.INTERNAL_SERVER_ERROR ||
statusCode === HTTP_STATUS_CODE.TOO_MANY_REQUESTS
);
}
return false;
};
export const toDomainError = (error: unknown): DomainError => {
if (isHttpErrorLike(error)) {
const status = error.status;
const message = getErrorMessage(error);
const body = error.data as ApiErrorWithShape | undefined;
if (
status === HTTP_STATUS_CODE.UNAUTHORIZED ||
status === HTTP_STATUS_CODE.FORBIDDEN
) {
return createError.auth(message, body?.code);
}
if (status === HTTP_STATUS_CODE.NOT_FOUND) {
return createError.notFound(message);
}
if (
status === HTTP_STATUS_CODE.REQUEST_TIMEOUT ||
status === HTTP_STATUS_CODE.GATEWAY_TIMEOUT
) {
return createError.timeout(message);
}
if (status === HTTP_STATUS_CODE.UNPROCESSABLE_ENTITY) {
return createError.validation(
message,
undefined,
normalizeValidationErrors(body?.errors),
);
}
return createError.network(message, status);
}
if (error instanceof Error) {
return createError.app(error.message, error);
}
return createError.app(API_ERROR_TEXT.UNKNOWN_ERROR, error);
};
export const createRequestEffect = <A>(
operation: () => Promise<A> | A,
policy: EffectRequestPolicy = {},
): Effect.Effect<A, DomainError> => {
let requestEffect: Effect.Effect<A, DomainError> = Effect.tryPromise({
try: () => Promise.resolve(operation()),
catch: toDomainError,
});
if (policy.timeoutMs && policy.timeoutMs > 0) {
const timeout = policy.timeoutMs;
requestEffect = requestEffect.pipe(
Effect.timeoutFail({
duration: timeout,
onTimeout: () =>
createError.timeout(API_ERROR_TEXT.requestTimedOut(timeout), timeout),
}),
);
}
if (policy.retries && policy.retries > 0) {
requestEffect = requestEffect.pipe(
Effect.retry({
times: policy.retries,
until: (error) => !isRetryable(error),
}),
);
}
return requestEffect;
};
export const runRequestEffect = <A>(
operation: () => Promise<A> | A,
policy: EffectRequestPolicy = {},
): Promise<A> => {
return Effect.runPromise(createRequestEffect(operation, policy));
};
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