52 lines
1.6 KiB
TypeScript
52 lines
1.6 KiB
TypeScript
import { Schema as S, ParseResult, Either } from 'effect'
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import type { Env, Input, MiddlewareHandler, ValidationTargets } from 'hono'
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import type { Simplify } from 'hono/utils/types'
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import { validator } from 'hono/validator'
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type HasUndefined<T> = undefined extends T ? true : false
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export const effectValidator = <
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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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Type,
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Encoded,
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In = Simplify<Encoded>,
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Out = Simplify<Type>,
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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]?: K extends 'json'
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? In
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: HasUndefined<keyof ValidationTargets[K]> extends true
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? { [K2 in keyof In]?: ValidationTargets[K][K2] }
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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]: K extends 'json'
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? In
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: HasUndefined<keyof ValidationTargets[K]> extends true
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? { [K2 in keyof In]?: ValidationTargets[K][K2] }
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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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>(
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target: Target,
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schema: S.Schema<Type, Encoded, never>
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): MiddlewareHandler<E, P, I> => {
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// @ts-expect-error not typed well
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return validator(target, async (value, c) => {
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const result = S.decodeUnknownEither(schema)(value)
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return Either.match(result, {
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onLeft: (error) =>
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c.json({ success: false, error: ParseResult.ArrayFormatter.formatErrorSync(error) }, 400),
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onRight: (data) => {
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c.req.addValidatedData(target, data as object)
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return data
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},
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})
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})
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}
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