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

import { checkForUpdate } from "./updateCheck.mjs";
import { sendTelemetryPing } from "./sendTelemetry.mjs";
import { Modal, Frame } from "./islands/Modal.mjs";
import { MenuButton } from "./islands/MenuButton.mjs";

const shouldLoadThemeOverrides = async (db) => {
    const { getMods, isEnabled } = globalThis.__enhancerApi,
      loadThemeOverrides = await db.get("loadThemeOverrides");
    if (loadThemeOverrides === "Enabled") return true;
    if (loadThemeOverrides === "Disabled") return false;
    // prettier-ignore
    // loadThemeOverrides === "Auto"
    return (await getMods(async (mod) => {
      if (!mod._src.startsWith("themes/")) return false;
      return await isEnabled(mod.id);
    })).length;
  },
  loadThemeOverrides = async (db) => {
    const { html, enhancerUrl } = globalThis.__enhancerApi;
    if (!(await shouldLoadThemeOverrides(db))) return;
    document.head.append(html`<link
      rel="stylesheet"
      href=${enhancerUrl("core/theme.css")}
    />`);
  },
  insertCustomStyles = async (db) => {
    const { html } = globalThis.__enhancerApi,
      customStyles = (await db.get("customStyles"))?.content;
    if (!customStyles) return;
    return document.head.append(html`<style>
      ${customStyles}
    </style>`);
  };

const insertMenu = async (db) => {
  const notionSidebar = `.notion-sidebar-container .notion-sidebar > :nth-child(3) > div > :nth-child(2)`,
    notionSettingsAndMembers = `${notionSidebar} > [role="button"]:nth-child(3)`,
    { html, addKeyListener, addMutationListener } = globalThis.__enhancerApi,
    { platform, enhancerUrl, onMessage } = globalThis.__enhancerApi,
    menuButtonIconStyle = await db.get("menuButtonIconStyle"),
    openMenuHotkey = await db.get("openMenuHotkey"),
    menuPing = {
      channel: "notion-enhancer",
      hotkey: openMenuHotkey,
      icon: menuButtonIconStyle,
    };

  let _contentWindow;
  const updateMenuTheme = () => {
      const darkMode = document.body.classList.contains("dark"),
        notionTheme = darkMode ? "dark" : "light";
      if (menuPing.theme === notionTheme) return;
      menuPing.theme = notionTheme;
      _contentWindow?.postMessage?.(menuPing, "*");
    },
    triggerMenuRender = (contentWindow) => {
      _contentWindow ??= contentWindow;
      if (!$modal.hasAttribute("open")) return;
      _contentWindow?.focus?.();
      delete menuPing.theme;
      updateMenuTheme();
    };

  const $modal = html`<${Modal} onopen=${triggerMenuRender}>
      <${Frame}
        title="notion-enhancer menu"
        src="${enhancerUrl("core/menu/index.html")}"
        onload=${function () {
          // pass notion-enhancer api to electron menu process
          if (["darwin", "win32", "linux"].includes(platform)) {
            const apiKey = "__enhancerApi";
            this.contentWindow[apiKey] = globalThis[apiKey];
          }
          triggerMenuRender(this.contentWindow);
        }}
      />
    <//>`,
    $button = html`<${MenuButton}
      onclick=${$modal.open}
      notifications=${(await checkForUpdate()) ? 1 : 0}
      themeOverridesLoaded=${await shouldLoadThemeOverrides(db)}
      icon="notion-enhancer${menuButtonIconStyle === "Monochrome"
        ? "?mask"
        : " text-[16px]"}"
      >notion-enhancer
    <//>`;
  const appendToDom = () => {
    if (!document.contains($modal)) document.body.append($modal);
    if (!document.querySelector(notionSidebar)?.contains($button)) {
      document.querySelector(notionSettingsAndMembers)?.after($button);
    }
  };
  addMutationListener(notionSidebar, appendToDom);
  addMutationListener("body", updateMenuTheme);
  appendToDom();

  addKeyListener(openMenuHotkey, (event) => {
    event.preventDefault();
    $modal.open();
  });
  window.addEventListener("focus", triggerMenuRender);
  window.addEventListener("message", (event) => {
    // from embedded menu
    if (event.data?.channel !== "notion-enhancer") return;
    if (event.data?.action === "close-menu") $modal.close();
    if (event.data?.action === "open-menu") $modal.open();
  });
  onMessage("notion-enhancer", (message) => {
    // from worker
    if (message === "open-menu") $modal.open();
  });
};

export default async (api, db) =>
  Promise.all([
    insertMenu(db),
    insertCustomStyles(db),
    loadThemeOverrides(db),
    sendTelemetryPing(),
  ]).then(() => api.sendMessage("notion-enhancer", "load-complete"));