import { createSignal, Show } from "solid-js";
import { SearchableSelect } from "./SearchableSelect";
import { JSX } from "solid-js/jsx-runtime";
// import { subjects } from "../subjects";
import { FilledCard } from "../../components/FilledCard";
import { RegisterPreview } from "./RegisterPreview";

// eslint-disable-next-line @typescript-eslint/no-explicit-any
const subjects: () => Array<any> = () => [];

type HTMLEventFn = JSX.EventHandlerUnion<HTMLFormElement, Event & {
    submitter: HTMLElement;
}>;


type TabType = "Presets" | "Manual";

export function NewRegister(props: {
    personId: number | null,
    onSuccess: () => void,
}) {
    const [active, setActive] = createSignal<TabType>("Manual");
    const [selections, setSelections] = createSignal<Array<[number, string]>>([]);

    const onRegister = () => {
        setSelections([]);
        props.onSuccess();
    };

    return (
        <div class="h-screen overflow-y-scroll">
            <FilledCard class="border border-c-outline overflow-hidden">
                <h2 class="p-4 font-bold text-xl">Registrar certs</h2>

                <RegisterTabs active={active()} setActive={setActive} />

                <div class="bg-c-surface p-4 h-[22rem]">
                    <Show when={active() === "Presets"}>
                        <p>Proximamente...</p>
                    </Show>
                    <Show when={active() === "Manual"}>
                        <ManualCerts personId={props.personId} onAdd={(v) => setSelections((x) => [...x, v])} />
                    </Show>
                </div>
            </FilledCard>

            <RegisterPreview
                selections={selections()}
                personId={props.personId}
                onDelete={(deleteId) => setSelections((s) => [...s.filter(([id]) => id !== deleteId)])}
                onRegister={onRegister}
            />
        </div>
    );
}


function RegisterTabs(props: {active: TabType, setActive: (v: TabType) => void}) {
    const presetsClasses = () => ((props.active === "Presets") ? "font-bold border-c-primary" : "border-c-transparent");
    const manualClasses = () => ((props.active === "Manual") ? "font-bold border-c-primary" : "border-c-transparent");

    return (
        <div class="grid grid-cols-2">
            <button
                class={`py-2 border-b-4 ${presetsClasses()}`}
                onclick={() => props.setActive("Presets")}
            >
                Presets
            </button>
            <button
                class={`py-2 border-b-4 ${manualClasses()}`}
                onclick={() => props.setActive("Manual")}
            >
                Manual
            </button>
        </div>
    );
}

function ManualCerts(props: {personId: number | null, onAdd: (v: [number, string]) => void}) {
    // Used to update SearchableSelect.tsx manually
    const [count, setCount] = createSignal(0);
    const [error, setError] = createSignal("");

    const [selectedSubject, setSelectedSubject] = createSignal<number | null>(null);

    const datePicker = (
        <input
            id="create-date"
            class="bg-c-surface text-c-on-surface border border-c-outline rounded-lg p-2"
            type="date"
        />
    );

    const register: HTMLEventFn = async(ev) => {
        ev.preventDefault();

        const subject = selectedSubject();
        const date = (datePicker as HTMLInputElement).value;

        if (subject === null) {
            setError("Selecciona un curso");

            setTimeout(() => setError(""), 5000);
            return;
        }
        if (date === "") {
            setError("Selecciona una fecha");

            setTimeout(() => setError(""), 5000);
            return;
        }

        props.onAdd([subject, date]);
        // This is used to update & refresh the <SearchableSelect> component
        setCount((x) => x + 1);
    };

    console.log(`Person ID: ${props.personId}`);

    return (
        <>
            <form onsubmit={register}>
                <div>
                    <SearchableSelect
                        subjects={subjects()}
                        onChange={setSelectedSubject}
                        count={count()}
                    />
                </div>

                <div class="relative my-4">
                    {datePicker}
                    <label for="create-date" class="absolute -top-2 left-2 text-xs bg-c-surface px-1">Fecha</label>
                </div>

                <input
                    class="bg-c-primary text-c-on-primary px-4 py-2 rounded-full cursor-pointer
                                    disabled:opacity-50 disabled:cursor-not-allowed"
                    type="submit"
                    value="Agregar"
                    disabled={props.personId === null}
                />
            </form>

            <p
                class="my-2 p-1 rounded w-fit mx-4 bg-c-error text-c-on-error"
                style={{opacity: error() === "" ? "0" : "1", "user-select": "none"}}
            >
                {error()}&nbsp;
            </p>
        </>
    );
}