import { Schema as S } from "@effect/schema"
import { makeObservable, observable, type CreateObservableOptions } from "mobx"
import { mapValues } from "remeda"


interface MobXObservableInput {
    new(...args: any[]): S.Struct.Type<S.Struct.Fields>
    readonly fields: { readonly [K in keyof S.Struct.Fields]: S.Struct.Fields[K] }
}

export function MobXObservable<
    This extends MobXObservableInput
>(
    class_:    This,
    options?:  Omit<CreateObservableOptions, "proxy">,
) {
    return class MobXObservable extends class_ {
        declare ["constructor"]: typeof MobXObservable

        constructor(...args: any[]) {
            super(...args)

            makeObservable(this,
                mapValues(this.constructor.fields, () => observable),
                options,
            )
        }
    } as This
}