77 lines
1.9 KiB
TypeScript
77 lines
1.9 KiB
TypeScript
import type { Context, Env, Input, MiddlewareHandler, TypedResponse, ValidationTargets } from 'hono'
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import { validator } from 'hono/validator'
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import type {
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GenericSchema,
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GenericSchemaAsync,
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InferInput,
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InferOutput,
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SafeParseResult,
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} from 'valibot'
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import { safeParseAsync } from 'valibot'
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export type Hook<
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T extends GenericSchema | GenericSchemaAsync,
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E extends Env,
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P extends string,
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Target extends keyof ValidationTargets = keyof ValidationTargets,
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O = {},
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> = (
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result: SafeParseResult<T> & {
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target: Target
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},
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c: Context<E, P>
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) => Response | void | TypedResponse<O> | Promise<Response | void | TypedResponse<O>>
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type HasUndefined<T> = undefined extends T ? true : false
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export const vValidator = <
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T extends GenericSchema | GenericSchemaAsync,
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Target extends keyof ValidationTargets,
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E extends Env,
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P extends string,
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In = InferInput<T>,
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Out = InferOutput<T>,
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I extends Input = {
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in: HasUndefined<In> extends true
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? {
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[K in Target]?: In extends ValidationTargets[K]
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? In
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: { [K2 in keyof In]?: ValidationTargets[K][K2] }
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}
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: {
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[K in Target]: In extends ValidationTargets[K]
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? In
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: { [K2 in keyof In]: ValidationTargets[K][K2] }
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}
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out: { [K in Target]: Out }
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},
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V extends I = I,
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>(
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target: Target,
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schema: T,
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hook?: Hook<T, E, P, Target>
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): MiddlewareHandler<E, P, V> =>
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// @ts-expect-error not typed well
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validator(target, async (value, c) => {
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const result = await safeParseAsync(schema, value)
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if (hook) {
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const hookResult = await hook({ ...result, target }, c)
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if (hookResult) {
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if (hookResult instanceof Response) {
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return hookResult
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}
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if ('response' in hookResult) {
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return hookResult.response
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}
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}
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}
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if (!result.success) {
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return c.json(result, 400)
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}
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return result.output
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})
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