<!--
/**
 * @license AGPL-3.0-OR-LATER
 * @copyright 2024 memdmp
 * 
 * Copyright (C) 2024 memdmp
 *
 * This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 -->
<script lang="ts">
  import logo from './boot-logo.png';
  import './anim.css';
  import { architecture, hostname, tty, versions } from './distro-info';
  import { login, ttyLines, type RenderBlock, type TTYText } from './shared';
  import { onDestroy, onMount } from 'svelte';
  import { base } from '$app/paths';

  const initTagLine = `line flex flex-row flex-wrap gap-3 justify-between`;

  const fsckFileCount = Math.floor(Math.random() * 32768 + 6732);
  const fsckTotalCount = Math.round(
    (fsckFileCount / 6732) * 753664 + Math.random() * 10000,
  );
  const blocksTotal = Math.floor(Math.random() * 8000000 + 4000000);
  const blocksCount = Math.floor(Math.random() * 600000 + 200000);

  const lanLeastSignificantIPPart = Math.floor(Math.random() * 253 + 2);

  let {
    skipAnimation = false,
  }: {
    skipAnimation?: boolean;
  } = $props();
  onMount(() => {
    if (skipAnimation && location.pathname !== base + '/skip-animation')
      history.replaceState({}, '', base + '/skip-animation');
  });

  let isScripted = $state(false);
  onMount(() => (isScripted = true));
  onDestroy(() => (isScripted = false));
</script>

<svelte:head>
  <title>mem.estrogen.zone</title>
</svelte:head>

{#snippet tagLeft(colour: string)}
  <span class="text-[{colour}]">*</span>
{/snippet}
{#snippet okTagLeft()}
  {@render tagLeft('#51f051')}
{/snippet}
{#snippet tagRight(innerText: string, innerColour: string)}
  <span class="text-[#5f5fff]">[</span>
  <span class="text-[{innerColour}]">{innerText}</span>
  <span class="text-[#5f5fff]">]</span>
{/snippet}
{#snippet okTagRight()}
  {@render tagRight('ok', '#51f051')}
{/snippet}
{#snippet okLine(text: string, classes?: string, rightClass?: string)}
  <div class="{initTagLine}{classes ? ' ' + classes : ''}">
    <div class="left">
      {@render okTagLeft()}
      {text}
    </div>
    <div class="right{rightClass ? ' ' + rightClass : ''}">
      {@render okTagRight()}
    </div>
  </div>
{/snippet}
{#snippet ttyTextInnerRenderer(section: RenderBlock)}
  <span
    class="ttytext-block {section.colour
      ? ` text-[${section.colour}]`
      : ''}{section.bg ? ` bg-[${section.bg}]` : ''} {section.weight
      ? ` ${['', 'font-thin', 'font-extralight', 'font-light', 'font-normal', 'font-medium', 'font-semibold', 'font-bold', 'font-extrabold', 'font-black'][section.weight / 100]}`
      : ''}{typeof section.italic === 'undefined'
      ? ''
      : section.italic
        ? ' italic'
        : ' not-italic'}{typeof section.underlined === 'undefined'
      ? ''
      : section.underlined
        ? ` underline`
        : ' no-underline'} inline"
    >{#if section.raw}{@html section.value}{:else}{#each section.value
        .split('\n')
        .map( (l, i, a) => (i === a.length - 1 ? [0, l] : [1, l]), ) as [nl, l]}{l}{#if nl}<br
          />{/if}{/each}{/if}</span
  >
{/snippet}
{#snippet ttyTextMiddleRenderer(
  section: RenderBlock,
  line: TTYText & { kind: 'text' },
)}
  {#if section.url}
    {#if typeof section.url === 'string'}
      {#if section.url.startsWith('newtab:')}
        {@const url = section.url.substring(7)}
        <a
          href={url.startsWith('/') ? base + url : url}
          target="_blank"
          rel="noopener noreferrer"
          class="no-underline text-inherit"
          download={section.dl}>{@render ttyTextInnerRenderer(section)}</a
        >
      {:else if section.url.startsWith('currenttab:')}
        {@const url = section.url.substring(11)}
        <a
          href={url.startsWith('/') ? base + url : url}
          class="no-underline text-inherit"
          download={section.dl}>{@render ttyTextInnerRenderer(section)}</a
        >
      {:else}
        ERR: Unknown Link Format
      {/if}
    {:else}
      <span
        onclick={() =>
          typeof section.url !== 'function' ? void 0 : section.url(line)}
        onkeypress={() =>
          typeof section.url !== 'function' ? void 0 : section.url(line)}
        role="link"
        tabindex="0">{@render ttyTextInnerRenderer(section)}</span
      >
    {/if}
  {:else}
    {@render ttyTextInnerRenderer(section)}
  {/if}
{/snippet}
{#snippet ttyText(line: TTYText)}
  {#if line.kind === 'text'}
    {#if (line.renderrestriction ?? 'everywhere') === 'everywhere' || line.renderrestriction === 'noscript' || (line.renderrestriction === 'js-only' && isScripted)}
      {#if line.renderrestriction === 'noscript'}
        <noscript class="inline-block max-w-[100%] {line.classes.join(' ')}"
          >{#each line.value as v}{@render ttyTextMiddleRenderer(
              v,
              line,
            )}{/each}</noscript
        >
      {:else}
        <span class="inline-block max-w-[100%] {line.classes.join(' ')}"
          >{#each line.value as v}{@render ttyTextMiddleRenderer(
              v,
              line,
            )}{/each}</span
        >
      {/if}
    {/if}
  {/if}
{/snippet}

<div class="hidden">
  {#each ['inline-block', 'block', 'flex', 'inline-flex', 'max-w-full', 'font-thin', 'font-extralight', 'font-light', 'font-normal', 'font-medium', 'font-semibold', 'font-bold', 'font-extrabold', 'font-black'] as c}
    <span class={c}></span>
  {/each}
</div>

<div
  class="fixed top-0 left-0 w-screen h-screen font-mono"
  id="app"
  class:skip-animation={skipAnimation}
>
  <div
    id="bios"
    class="flex flex-col items-center justify-between relative font-bios text-lg"
  >
    <div class="top flex items-center justify-center flex-col">
      <div class="inner text-[#999999]">
        <p class="leading-4 mt-8 -mb-8 max-w-[36rem]">
          <span class="bdsdxe-load"
            >BdsDxe: loading Boot0002 "UEFI Misc Device" from PciRoot
            (0x0)/Pci(0x2,0x4)/Pci(0x0,0x0)</span
          ><br />
          <span class="bdsdxe-start"
            >BdsDxe: starting Boot0002 "UEFI Misc Device" from PciRoot
            (0x0)/Pci(0x2,0x4)/Pci(0x0,0x0)</span
          >
        </p>
      </div>
    </div>
    <div class="middle">
      <img
        src={logo}
        alt="Bootloader Logo"
        class="w-32 h-32 flex items-center justify-center"
      />
    </div>
    <div
      class="bottom flex flex-col items-stretch justify-center text-center gap-0.5 w-full pb-4"
    >
      <div class="start-text">Start boot option</div>
      <div
        class="bar h-4"
        style={`background-image: url("data:image/svg+xml,${encodeURIComponent(`<svg width="32" height="32" viewbox="0 0 32 32" xmlns="http://www.w3.org/2000/svg">
  <rect x="1" y="1" width="30" height="30" fill="white" stroke="black" stroke-width="2"/>
</svg>
`)}");background-size:contain;`}
      ></div>
    </div>
  </div>
  <div id="grub" class="font-grub text-sm">
    <div
      class="relative p-4 flex items-stretch justify-stretch flex-col w-screen h-screen"
    >
      <p class="title text-[#a2a2a2] mb-4 h-4 text-center">
        GNU GRUB &nbsp;version 2.12
      </p>
      <div
        class="outer-border border-2 border-[#a8a8a8] border-solid h-full px-1 py-2 flex flex-col items-stretch"
      >
        <div class="entry bg-[#a8a8a8] text-[#000] text-left">
          *Alpine Linux {versions.alpine.number}, with {versions.kernel
            .humanReadable}
        </div>
        <div class="entry text-[#a8a8a8] text-left">
          &nbsp;UEFI Firmware Setup
        </div>
      </div>
      <p class="footer text-[#a2a2a2] my-4 text-left pl-2">
        <span class="block pl-6">
          Use the ↑ and ↓ keys to select which entry is highlighted.<br />
          Press enter to boot the selected OS, `e' to edit the commands before booting
          or `c' for a command-line.<br />
        </span>
        The highlighted entry will be executed automatically in
        <span class="grub-2s inline-block">2</span><span
          class="grub-1s inline-block">1</span
        >s.
      </p>
    </div>
  </div>
  <div id="grub-term" class="font-grub text-sm text-left text-[#a2a2a2]">
    <p class="p-8">
      &nbsp;&nbsp;Booting `Alpine Linux {versions.alpine.number}, with {versions
        .kernel.humanReadable}'<br /><br /><span class="load-kernel"
        >Loading {versions.kernel.humanReadable} ...</span
      ><br /><span class="load-ramdisk">Loading initial ramdisk ...</span>
    </p>
  </div>
  <!--
    flex col reverse and mb auto are hacks for it to auto scroll to bottom(!)
    flex col reverse only works due to nested inner (which would be at bottom of screen, if it wasnt for mb-auto div above it)
   -->
  <div id="openrc" class="overflow-y-auto flex flex-col-reverse">
    <div class="mb-auto"></div>
    <div class="font-mono leading-4 text-[#b9b9b9] flex flex-col p-4">
      <div class="line">
        &nbsp;&nbsp;<span class="text-[#51f051]">OpenRC</span>
        <span class="text-[#4bdfdf]">{versions.openrc}</span>
        is starting up Linux
        <span class="text-[#5f5fff]">{versions.kernel.id} ({architecture})</span
        >
      </div>
      <div class="line">&ZeroWidthSpace;</div>
      {@render okLine('/proc/ is already mounted')}
      {@render okLine('Mounting /run ...')}
      {@render okLine('/run/openrc: creating directory')}
      {@render okLine('/run/lock: creating directory', 'openrc-boot-step-1')}
      {@render okLine('/run/lock: correcting owner', 'openrc-boot-step-1')}
      {@render okLine('Caching service dependencies ...', 'openrc-boot-step-1')}
      {@render okLine('Remounting devtmpfs on /dev ...', 'openrc-boot-step-2')}
      {@render okLine('Mounting /dev/mqueue ...', 'openrc-boot-step-3')}
      {@render okLine('Mounting security filesystem ...', 'openrc-boot-step-4')}
      {@render okLine('Mounting debug filesystem ...', 'openrc-boot-step-5')}
      {@render okLine(
        'Mounting persistent storage (pstore) filesystem ...',
        'openrc-boot-step-5',
      )}
      {@render okLine('Mounting efivarfs filesystem ...', 'openrc-boot-step-5')}
      {@render okLine('Starting busybox mdev ...', 'openrc-boot-step-6')}
      {@render okLine('Scanning hardware for mdev ...', 'openrc-boot-step-6')}
      {@render okLine('Loading hardware drivers ...', 'openrc-boot-step-7')}
      {@render okLine('Loading modules ...', 'openrc-boot-step-8')}
      {@render okLine(
        'Setting system clock using the hardware clock [UTC] ...',
        'openrc-boot-step-9',
      )}
      {@render okLine('Checking local filesystems ...', 'openrc-boot-step-10')}
      <div class="line openrc-boot-step-11">
        /dev/mapper/bepis: clean, {fsckFileCount}/{fsckTotalCount} files, {blocksCount}/{blocksTotal}
        blocks
      </div>
      {@render okLine(
        'Remounting root filesystem read/write ...',
        'openrc-boot-step-12',
      )}
      {@render okLine('Remounting filesystems ...', 'openrc-boot-step-13')}
      {@render okLine('Activating swap devices ...', 'openrc-boot-step-14')}
      {@render okLine('Mounting local filesystems ...', 'openrc-boot-step-15')}
      {@render okLine(
        'Configuring kernel parameters ...',
        'openrc-boot-step-16',
      )}
      {@render okLine('Creating user login records ...', 'openrc-boot-step-17')}
      {@render okLine('Setting hostname ...', 'openrc-boot-step-18')}
      {@render okLine('Setting keymap ...', 'openrc-boot-step-19')}
      {@render okLine('Starting networking ...', 'openrc-boot-step-20')}
      {@render okLine('\xa0\xa0lo ...', 'openrc-boot-step-21')}
      {@render okLine('\xa0\xa0eth0 ...', 'openrc-boot-step-22')}
      <div class="line openrc-boot-step-22">udhcpd: started</div>
      <div class="line openrc-boot-step-23">udhcpd: broadcasting discover</div>
      <!-- TODO: configurable subnet uwu -->
      <div class="line openrc-boot-step-24">
        udhcpd: broadcasting select for 192.168.1.{lanLeastSignificantIPPart},
        server 192.168.1.1
      </div>
      <div class="line openrc-boot-step-25">
        udhcpd: lease of 192.168.1.{lanLeastSignificantIPPart} obtained from 192.168.1.1,
        lease time 3600
      </div>
      {@render okLine(
        'Seeding random number generator ...',
        'openrc-boot-step-26',
      )}
      {@render okLine(
        'Seeding 256 bits without crediting',
        'openrc-boot-step-26',
      )}
      {@render okLine(
        'Saving 256 bits of creditable seed for next boot',
        'openrc-boot-step-26',
      )}
      {@render okLine('Starting logbookd ...', 'openrc-boot-step-27')}
      {@render okLine('Starting busybox acpid ...', 'openrc-boot-step-28')}
      {@render okLine('Starting busybox crond ...', 'openrc-boot-step-29')}
      {@render okLine('Starting busybox ntpd ...', 'openrc-boot-step-29')}
      <div class="line openrc-boot-step-30">&ZeroWidthSpace;</div>
      <div class="line openrc-boot-step-30">
        Welcome to Alpine Linux {versions.alpine
          .number}{#if versions.alpine.isEdge}&nbsp;(edge){/if}
      </div>
      <div class="line openrc-boot-step-30">
        Kernel {versions.kernel.humanReadable} on an {architecture} (/dev/{tty})
      </div>
      <div class="line openrc-boot-step-30">&ZeroWidthSpace;</div>
      <div class="line openrc-boot-step-30">
        {hostname} login:&nbsp;<span class="openrc-username"
          >{#each login.username
            .split('')
            .map((v, i) => [v, i] as const) as [char, idx]}<span
              class="openrc-username-char openrc-username-char-{idx} inline-block"
              >{char}</span
            >{/each}</span
        ><span class="openrc-hide-at-login-prompt-username-done"
          ><span class="openrc-username-anim"
            ><code class="hidden-after-anim">_</code></span
          ></span
        ><span class="openrc-pw-line"
          ><br />
          Password:&nbsp;<span class="openrc-password-anim"
            ><code class="hidden-after-anim">_</code></span
          ></span
        >
      </div>
      <!-- TODO: Animate login and launching a tui here (for js enjoyers) or a minimal terminal after clearing the screen, and a no js screen alongside a plaintext version of the thing (for schizo noscript lovers) -->
      <div class="hidden-after-anim">
        <span class="openrc-hide-at-last-boot-step inline-block">
          <pre class="flashing-cursor">_</pre>
        </span>
      </div>
      <div class="line ttylines-openrc font-mono text-[#070505] flex flex-col">
        {#each ttyLines.filter(((maxidx) => (_, i) => i < (maxidx === -1 ? Infinity : maxidx))(ttyLines.findIndex((v) => v.kind === 'clear'))) as line}
          {@render ttyText(line)}
        {/each}
      </div>
    </div>
  </div>
  {#if ttyLines.find((v) => v.kind === 'clear')}
    {#each ttyLines
      .map((v, i) => [v, i] as const)
      .filter(([v]) => v.kind === 'clear')
      .map((v, i, a) => [v[1], a[i + 1]?.[1], i]) as [idx, nextIdx, clearIdx]}
      <div
        id="tty-{clearIdx}"
        class="overflow-y-auto max-h-screen flex flex-col-reverse"
      >
        <div class="mb-auto"></div>
        <div class="font-mono leading-4 text-[#070505] flex flex-col p-4">
          {#each ttyLines.filter((_, i) => i >= idx && i < (nextIdx ?? Infinity)) as line}
            {@render ttyText(line)}
          {/each}
        </div>
      </div>
    {/each}
  {/if}
</div>

<style>
  @keyframes flashing-cursor {
    0% {
      opacity: 0;
    }
    49% {
      opacity: 0;
    }
    50% {
      opacity: 1;
    }
    99% {
      opacity: 1;
    }
    100% {
      opacity: 0;
    }
  }
  .flashing-cursor {
    animation-name: flashing-cursor;
    animation-duration: 0.4s;
    animation-iteration-count: infinite;
    animation-timing-function: linear;
  }
  .hidden-after-anim {
    margin-top: -99999vh;
    margin-bottom: 99999vh;
    margin-left: -99999vw;
    margin-right: 99999vw;
    transform: scaleX(0);
    opacity: 0;
  }
  .ttytext-block {
    white-space-collapse: preserve-spaces;
  }
</style>