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<script lang="ts">
  import { tick } from "svelte";
  import handler from "$lib/handler";
  import { sats, f, s, focus, loc } from "$lib/utils";
  import { t } from "$lib/translations";
  import { enhance } from "$app/forms";
  import Numpad from "$comp/Numpad.svelte";
  import Spinner from "$comp/Spinner.svelte";
  import { fiat, pin } from "$lib/store";

  let { data, form } = $props();

  let currency = $derived(data.user.currency);
  let locale = $derived(loc(data.user));
  let username = $derived(data.user.username);
  let defaultDescription = $derived(data.defaultDescription);
  let minWithdrawable = $derived(data.minWithdrawable);
  let maxWithdrawable = $derived(data.maxWithdrawable);
  let k1 = $derived(data.k1);
  let callback = $derived(data.callback);
  let rate = $derived(data.rate);

  let amount = $state((() => Math.round(data.minWithdrawable / 1000))());
  let amountFiat = $derived(parseFloat(((amount * rate) / sats).toFixed(2)));

  let submit: HTMLButtonElement | undefined = $state();
  let submitting: boolean = $state(false);
  let toggle = () => (submitting = !submitting);

  let setMax = async (e) => {
    e.preventDefault();
    $fiat = false;
    await tick();
    amount = Math.floor(maxWithdrawable / 1000);
  };
</script>

<div class="container px-4 mt-20 max-w-xl mx-auto">
  <div class="text-center mb-8">
    <div>
      <h1 class="text-3xl md:text-4xl font-semibold mb-2">{defaultDescription}</h1>
    </div>
  </div>

  {#if form?.error}
    <div class="text-red-600 text-center mb-5">{form.error}</div>
  {/if}

  {#if minWithdrawable === maxWithdrawable}
    <div class="text-center font-bold text-2xl mb-4">
      <div class:hidden={!$fiat}>{f(amountFiat, currency)}</div>
      <div class:hidden={$fiat}>
        <span class="text-secondary font-normal text-xl">⚡️{`${s(amount)}`}</span>
      </div>
    </div>
  {:else}
    <Numpad bind:amount {currency} {rate} {locale} />
  {/if}

  <form use:enhance={handler(toggle)} action="?/withdraw" method="POST" class="space-y-5">
    <input name="amount" value={amount} type="hidden" />
    <input name="username" value={username} type="hidden" />
    <input name="currency" value={currency} type="hidden" />
    <input name="minWithdrawable" value={minWithdrawable} type="hidden" />
    <input name="maxWithdrawable" value={maxWithdrawable} type="hidden" />
    <input name="callback" value={callback} type="hidden" />
    <input name="k1" value={k1} type="hidden" />

    <div class="flex gap-2">
      {#if maxWithdrawable > minWithdrawable}
        <button
          type="button"
          class="btn !w-auto grow"
          onclick={setMax}
          disabled={submitting}
          onkeydown={setMax}
        >
          <span class:hidden={!$fiat}>Max {f((Math.floor(maxWithdrawable / 1000) * rate) / sats, currency)}</span>
          <span class:hidden={$fiat}>Max ⚡️{s(Math.floor(maxWithdrawable / 1000))}</span>
        </button>
      {/if}

      <button bind:this={submit} type="submit" class="btn btn-accent !w-auto grow">
        {#if submitting}
          <Spinner />
        {:else}
          <div class="my-auto">{$t("payments.next")}</div>
        {/if}
      </button>
    </div>
  </form>
</div>