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


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

interface ObservableClassOptions extends Omit<CreateObservableOptions, "proxy"> {}

export const ObservableClass = (options?: ObservableClassOptions) =>
    <Self extends ObservableClassSelf>(self: Self) =>
        class Observable extends self {
            declare ["constructor"]: typeof Observable

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

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