/**
 * notion-enhancer
 * (c) 2023 dragonwocky <thedragonring.bod@gmail.com> (https://dragonwocky.me/)
 * (https://notion-enhancer.github.io/) under the MIT license
 */

const notionSidebar = `.notion-sidebar-container .notion-sidebar > :nth-child(3) > div > :nth-child(2)`;

export default async (api, db) => {
  const {
      html,
      platform,
      getThemes,
      isEnabled,
      enhancerUrl,
      onMessage,
      sendMessage,
      addMutationListener,
      addKeyListener,
    } = api,
    openMenuHotkey = await db.get("openMenuHotkey"),
    menuButtonIconStyle = await db.get("menuButtonIconStyle"),
    loadThemeOverrides = await db.get("loadThemeOverrides"),
    customStyles = await db.get("customStyles");

  // appearance

  const enabledThemes = (await getThemes()).map((theme) => isEnabled(theme.id)),
    forceLoadOverrides = loadThemeOverrides === "Enabled",
    autoLoadOverrides =
      loadThemeOverrides === "Auto" &&
      (await Promise.all(enabledThemes)).some((enabled) => enabled);
  if (forceLoadOverrides || autoLoadOverrides) {
    document.head.append(html`<link
      rel="stylesheet"
      href=${enhancerUrl("core/theme.css")}
    />`);
  }

  if (customStyles) {
    document.head.append(html`<style>
      ${customStyles}
    </style>`);
  }

  // menu

  let $menuModal, $menuFrame, _notionTheme;
  const updateTheme = (force = false) => {
    const darkMode = document.body.classList.contains("dark"),
      notionTheme = darkMode ? "dark" : "light";
    if (notionTheme !== _notionTheme || force) {
      _notionTheme = notionTheme;
      const msg = {
        namespace: "notion-enhancer",
        iconStyle: menuButtonIconStyle,
        mode: notionTheme,
      };
      $menuFrame?.contentWindow.postMessage(msg, "*");
    }
  };

  const openMenu = () => {
      updateTheme(true);
      $menuModal?.setAttribute("open", true);
    },
    closeMenu = () => $menuModal?.removeAttribute("open");

  $menuFrame = html`<iframe
    title="notion-enhancer menu"
    src="${enhancerUrl("core/menu/index.html")}"
    class="
      rounded-[5px] w-[1150px] h-[calc(100vh-100px)]
      max-w-[calc(100vw-100px)] max-h-[715px] overflow-hidden
      bg-[color:var(--theme--bg-primary)] drop-shadow-xl
      group-open:(pointer-events-auto opacity-100 scale-100)
      transition opacity-0 scale-95
    "
    onload=${() => {
      // pass notion-enhancer api to electron menu process
      if (platform !== "browser") {
        $menuFrame.contentWindow.__enhancerApi = api;
      }
      // menu relies on updateTheme for render trigger
      updateTheme(true);
    }}
  ></iframe>`;
  $menuModal = html`<div
    class="notion-enhancer--menu-modal group
    z-[999] fixed inset-0 w-screen h-screen
    transition pointer-events-none opacity-0
    open:(pointer-events-auto opacity-100)"
  >
    <div
      class="fixed inset-0 bg-[color:var(--theme--bg-overlay)]"
      onclick=${closeMenu}
    ></div>
    <div
      class="fixed inset-0 flex w-screen h-screen
      items-center justify-center pointer-events-none"
    >
      ${$menuFrame}
    </div>
  </div>`;
  document.body.append($menuModal);

  const $menuButton = html`<div
    onclick=${openMenu}
    tabindex="0"
    role="button"
    class="notion-enhancer--menu-button
    flex select-none cursor-pointer rounded-[3px]
    text-[14px] my-px mx-[4px] py-[2px] px-[10px]
    transition hover:bg-[color:var(--theme--bg-hover)]"
  >
    <div class="flex items-center justify-center w-[22px] h-[22px] mr-[8px]">
      <i
        class="i-notion-enhancer${menuButtonIconStyle === "Monochrome"
          ? "?mask"
          : " text-[16px]"}"
      ></i>
    </div>
    <div>notion-enhancer</div>
  </div>`;
  addMutationListener(notionSidebar, () => {
    if (document.contains($menuButton)) return;
    document.querySelector(notionSidebar)?.append($menuButton);
  });
  document.querySelector(notionSidebar)?.append($menuButton);

  addMutationListener("body", () => {
    if ($menuModal?.hasAttribute("open")) updateTheme();
  });
  onMessage("notion-enhancer", (message) => {
    if (message === "open-menu") openMenu();
  });
  addKeyListener(openMenuHotkey, (event) => {
    event.preventDefault();
    openMenu();
  });
  addKeyListener("Escape", () => {
    if (document.activeElement?.nodeName === "INPUT") return;
    closeMenu();
  });

  sendMessage("notion-enhancer", "load-complete");
};