useInput

packages/effect-fc/src/hooks/Hooks/index.ts

@@ -3,6 +3,7 @@ export * from "./useCallbackPromise.js"
 export * from "./useCallbackSync.js"
 export * from "./useContext.js"
 export * from "./useEffect.js"
+export * from "./useInput.js"
 export * from "./useLayoutEffect.js"
 export * from "./useMemo.js"
 export * from "./useOnce.js"

packages/effect-fc/src/hooks/Hooks/useInput.ts

@@ -0,0 +1,59 @@
+import { type Duration, Effect, flow, Option, ParseResult, Ref, Schema, Stream, SubscriptionRef, Types } from "effect"
+import * as React from "react"
+import { useCallbackSync } from "./useCallbackSync.js"
+import { useFork } from "./useFork.js"
+import { useOnce } from "./useOnce.js"
+import { useSubscribeRefs } from "./useSubscribeRefs.js"
+
+
+export namespace useInput {
+    export interface Options<A, R> {
+        readonly ref: SubscriptionRef.SubscriptionRef<A>
+        readonly schema: Schema.Schema<Types.NoInfer<A>, string, R>
+        readonly debounce?: Duration.Duration
+    }
+
+    export interface Result {
+        readonly value: string
+        readonly onChange: React.ChangeEventHandler<HTMLInputElement | HTMLTextAreaElement>
+        readonly error: Option.Option<ParseResult.ParseError>
+    }
+}
+
+export const useInput: {
+    <A, R>(options: useInput.Options<A, R>): Effect.Effect<useInput.Result, ParseResult.ParseError, R>
+} = Effect.fnUntraced(function* <A, R>(options: useInput.Options<A, R>) {
+    const internalRef = yield* useOnce(() => options.ref.pipe(
+        Effect.andThen(Schema.encode(options.schema)),
+        Effect.andThen(SubscriptionRef.make),
+    ))
+    const [error, setError] = React.useState(Option.none<ParseResult.ParseError>())
+
+    yield* useFork(() => Effect.all([
+        Stream.runForEach(options.ref, upstreamValue =>
+            Effect.andThen(internalRef, internalValue =>
+                upstreamValue !== internalValue
+                    ? Effect.andThen(Schema.encode(options.schema)(upstreamValue), v => Ref.set(internalRef, v))
+                    : Effect.void
+            )
+        ),
+
+        Stream.runForEach(
+            options.debounce ? Stream.debounce(internalRef, options.debounce) : internalRef,
+            flow(
+                Schema.decode(options.schema),
+                Effect.andThen(v => Ref.set(options.ref, v)),
+                Effect.andThen(() => setError(Option.none())),
+                Effect.catchTag("ParseError", e => Effect.sync(() => setError(Option.some(e)))),
+            ),
+        ),
+    ], { concurrency: "unbounded" }), [options.ref, options.schema, options.debounce, internalRef])
+
+    const [value] = yield* useSubscribeRefs(internalRef)
+    const onChange = yield* useCallbackSync((e: React.ChangeEvent<HTMLInputElement>) => Ref.set(
+        internalRef,
+        e.target.value,
+    ), [internalRef])
+
+    return { value, onChange, error }
+})