/**
 * Mapwright — entry point.
 *
 * Registers the toolbar button + a global API hook. The heavy lifting lives in
 * lib/* (pure, Node-testable) and app/* (the dialog).
 */

import { MapwrightApp } from "./app/generator-app.mjs";

const MODULE_ID = "mapwright";

Hooks.once("init", () => {
  game.mapwright = { open: () => MapwrightApp.open() };
});

// Toolbar button on the Walls control group (v13 array-or-object shape).
Hooks.on("getSceneControlButtons", (controls) => {
  if (!game.user?.isGM) return;

  const tool = {
    name: "mapwrightOpen",
    title: game.i18n.localize("MAPWRIGHT.ToolbarOpen"),
    icon: "fas fa-map",
    button: true,
    onClick: () => MapwrightApp.open()
  };

  if (Array.isArray(controls)) {
    const walls = controls.find((c) => c.name === "walls");
    if (walls) {
      walls.tools ??= [];
      if (!walls.tools.some((t) => t.name === tool.name)) walls.tools.push(tool);
    } else {
      controls.push({ name: MODULE_ID, title: "Mapwright", icon: "fas fa-map", layer: "walls", tools: [tool] });
    }
    return;
  }

  if (controls && typeof controls === "object") {
    const walls = controls.walls;
    if (walls) {
      walls.tools ??= {};
      walls.tools[tool.name] ??= tool;
    }
  }
});

// Scene directory header button as a second entry point.
Hooks.on("renderSceneDirectory", (_app, html) => {
  if (!game.user?.isGM) return;
  const root = html instanceof HTMLElement ? html : html?.[0];
  if (!root) return;
  const header = root.querySelector(".directory-header .action-buttons") ?? root.querySelector(".header-actions");
  if (!header || header.querySelector(".mapwright-open")) return;
  const btn = document.createElement("button");
  btn.type = "button";
  btn.className = "mapwright-open";
  btn.innerHTML = `<i class="fas fa-map"></i> ${game.i18n.localize("MAPWRIGHT.SceneButton")}`;
  btn.addEventListener("click", () => MapwrightApp.open());
  header.appendChild(btn);
});