// The welcome screen: shown the first time this browser opens the app, and from Help ▸ Welcome window.
import { composer as c } from "../../composer/composer.js";
import { list } from "../../shell/project.js";

const SEEN = "funpack_welcomed";
// A tile: title over its one-line hint, the whole tile pressable.
const card = (title, hint, onClick) => {
  const node = document.createElement("button");
  node.type = "button"; node.className = "fp-tile cx-focusable";
  const t = document.createElement("span"), h = document.createElement("span");
  t.className = "fp-tile-title"; t.textContent = title; h.className = "fp-tile-hint"; h.textContent = hint;
  node.append(t, h); node.addEventListener("click", onClick);
  return { node };
};

export default {
  id: "welcome",
  mount: "menubar.right",
  needs: ["project", "maintenance"],
  setup({ app }) {
    let win = null;
    const seen = () => { try { return localStorage.getItem(SEEN) === "1"; } catch { return true; } };
    const markSeen = () => { try { localStorage.setItem(SEEN, "1"); } catch { /* private window */ } };
    // Saved projects, or a project file from disk: the same two ways File ▸ Load and Open recent offer.
    const load = async () => {
      let all = []; try { all = await list(); } catch (err) { return c.toast.warn({ text: err.message }); }
      const items = [{ id: "__import__", label: "Import a project file…" }, ...all.map((r) => ({ id: r.id, label: r.name }))];
      const id = await c.modal.choice({ title: "Load a project", items }).result;
      if (!id) return;
      if (id === "__import__") {
        markSeen(); if (win) win.close("done");
        return app.say("project.load");
      }
      try { await app.project.open(id); markSeen(); if (win) win.close("done"); } catch (err) { c.toast.warn({ text: err.message }); }
    };
    const open = () => {
      if (win) return;
      const recent = app.project.project;
      const done = () => { markSeen(); if (win) win.close("done"); };
      const tiles = c.region.stack({ gap: "sm", children: [
        card("Update", "Pull the newest version from origin, install missing requirements and restart ComfyUI (after a running generation finishes)", () => app.maintenance.update()), card("Switch branch", "Pick another branch", () => app.maintenance.switchBranch()),
        card("Restart ComfyUI", "Reload the server without updating", () => app.maintenance.restart()), card("Rollback update", "Undo the last update", () => app.maintenance.rollback())] });
      tiles.node.classList.add("fp-tiles");
      win = c.modal.generic({
        title: "Welcome to FunPack", size: "lg",
        body: c.region.stack({ gap: "md", children: [
          c.hint.default({ text: "Multi-scene video on a real timeline." }),
          c.button.lg({ label: "Begin", tone: "primary", onClick: done }),
          ...(recent ? [c.button.md({ label: `Continue with “${recent.name}”`, onClick: done })] : []),
          c.button.md({ label: "Load an existing project", tone: "ghost", onClick: load }),
          tiles,
        ] }),
        onClose: () => { markSeen(); win = null; },
      });
    };
    const timer = seen() ? 0 : setTimeout(open, 600);                 // after the first paint, so the screen it sits over is already there
    const off = app.on((what) => { if (what === "welcome.open") open(); });
    return () => { clearTimeout(timer); off(); };
  },
};