#!/usr/bin/env node
/**
 * ObsiGate — Toolbar action grouping tests (#90).
 *
 * Static non-regression checks on the source of the document action bar:
 * the buttons must be assembled in functional groups separated by spacers:
 *   [TOC][pop-out][Bookmark] | [Editer][Source][.md][Forge] | [Copier][PDF][Export] | [Partager]
 *
 * Covers frontend/js/viewer.js (main app), frontend/popout.html (popout
 * window, kept aligned) and frontend/style.css (.action-sep rule).
 *
 * Usage: node tests/frontend/toolbar-order.test.mjs
 */

import { strict as assert } from "node:assert";
import { readFileSync } from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const ROOT = path.join(__dirname, "..", "..");

const viewer = readFileSync(path.join(ROOT, "frontend", "js", "viewer.js"), "utf8");
const popout = readFileSync(path.join(ROOT, "frontend", "popout.html"), "utf8");
const css = readFileSync(path.join(ROOT, "frontend", "style.css"), "utf8");

function test(label, fn) {
  try {
    fn();
    console.log("  \u2713 " + label);
  } catch (err) {
    console.error("  \u2717 " + label + "\n    " + err.message);
    process.exitCode = 1;
  }
}

// ── viewer.js : définition des groupes ───────────────────────────────────
test("viewer.js — group nav: TOC markdown-only, then pop-out, bookmark", () => {
  const m = viewer.match(/const navBtns = \[\];([\s\S]*?)const editBtns/);
  assert.ok(m, "navBtns block not found");
  assert.match(m[1], /if \(data\.is_markdown\) navBtns\.push\(tocBtn\);/);
  assert.ok(m[1].includes("navBtns.push(openNewWindowBtn, bookmarkBtn, chatBtn);"), "navBtns group order");
});

test("viewer.js — group edit = [edit, source, .ext, forge?, pretty?] in order", () => {
  const m = viewer.match(
    /const editBtns = \[\];([\s\S]*?)const exportBtns/,
  );
  assert.ok(m, "editBtns block not found");
  const block = m[1];
  const order = [];
  const re = /editBtns\.push\((\w+)\)/g;
  let g;
  while ((g = re.exec(block))) order.push(g[1]);
  // editBtn conditional, then sourceBtn, then ext-download conditional, then forge conditional
  assert.deepEqual(order, ["editBtn", "sourceBtn", "mdBtn", "forgeBtn", "prettyBtn"]);
  assert.ok(block.includes("if (!data.unsupported) editBtns.push(editBtn)"));
  assert.ok(block.includes("if (!data.is_image) editBtns.push(mdBtn)"));
  assert.ok(block.includes("if (data.is_markdown) editBtns.push(forgeBtn)"));
  // Pretty (text files) must land in the EDIT group, after the extension button
  assert.ok(block.indexOf("editBtns.push(prettyBtn)") > block.indexOf("editBtns.push(mdBtn)"));
});

test("viewer.js — export group = [copier] + [pdf, export] markdown-only", () => {
  const m = viewer.match(/const exportBtns = \[([\s\S]*?)\];([\s\S]*?)const shareBtns/);
  assert.ok(m, "exportBtns block not found");
  assert.ok(m[1].includes("copyBtn"), "copyBtn must be first in export group");
  assert.match(m[2], /if \(data\.is_markdown\) exportBtns\.push\(pdfBtn,\s*exportWrap\)/,
    "PDF/Export must be markdown-only (text files: Copier alone)");
});

test("viewer.js — group share = [partager]", () => {
  assert.match(viewer, /const shareBtns = \[\s*shareBtn\s*\];/);
});

test("viewer.js — assembly inserts an action-sep between non-empty groups", () => {
  const m = viewer.match(
    /\[navBtns,\s*editBtns,\s*exportBtns,\s*shareBtns\]\.forEach\(\(group\)\s*=>\s*\{([\s\S]*?)\}\);/,
  );
  assert.ok(m, "group assembly loop not found");
  const body = m[1];
  assert.match(body, /if \(group\.length === 0\) return;/, "empty group must be skipped");
  assert.match(body, /if \(fileActions\.length > 0\) fileActions\.push\(actionSep\(\)\);/,
    "spacer must be inserted between groups");
});

test("viewer.js — no legacy flat fileActions.push order remains", () => {
  assert.doesNotMatch(
    viewer,
    /const fileActions = \[\s*copyBtn,\s*sourceBtn\s*\];/,
    "old flat construction should be gone",
  );
});

// ── popout.html : alignement ───────────────────────────────────────────────
test("popout.html — grouped assembly matches viewer order", () => {
  assert.match(
    popout,
    /\[\[tocBtn,\s*bookmarkBtn\],\s*\[editBtn,\s*sourceBtn,\s*dlBtn\],\s*\[copyBtn,\s*pdfBtn\],\s*\[shareBtn\]\]/,
  );
  assert.match(popout, /if \(actionsDiv\.childNodes\.length > 0\) actionsDiv\.appendChild\(actionSep\(\)\);/);
});

test("popout.html — no leftover sequential appends remain", () => {
  assert.doesNotMatch(popout, /actionsDiv\.appendChild\((copyBtn|sourceBtn|dlBtn|pdfBtn|editBtn|tocBtn|shareBtn|bookmarkBtn)\);/,
    "buttons must be appended only via the grouped loop");
});

// ── style.css : règle du séparateur ──────────────────────────────────────
test("style.css — .action-sep rule exists", () => {
  assert.match(css, /\.file-actions \.action-sep\s*\{[^}]*background:[^;]*;/);
});

// ── #115 : barre d'outils collante au défilement ─────────────────────────
test("viewer.js — action bar wrapped in a sticky .file-toolbar", () => {
  assert.match(viewer, /class:\s*"file-toolbar"[\s\S]{0,120}file-actions/,
    "the document action bar must live in a .file-toolbar wrapper");
});

test("popout.html — action bar wrapped in a .file-toolbar", () => {
  assert.match(popout, /className\s*=\s*"file-toolbar"/,
    "popout action bar must live in a .file-toolbar wrapper");
});

test("style.css — .file-toolbar is pinned to the top while scrolling", () => {
  const m = css.match(/\.file-toolbar\s*\{([\s\S]*?)\}/);
  assert.ok(m, ".file-toolbar rule missing");
  assert.match(m[1], /position:\s*sticky/, ".file-toolbar must be sticky");
  assert.match(m[1], /top:\s*0/, ".file-toolbar must pin to the top");
  assert.match(m[1], /background:/, ".file-toolbar needs an opaque background");
});

test("style.css — reading mode hides the sticky toolbar", () => {
  assert.match(css, /body\.reading-mode\s+\.file-toolbar\s*[,{]/,
    "reading mode must hide .file-toolbar");
});

if (process.exitCode) {
  console.error("\nToolbar order tests FAILED");
} else {
  console.log("\nAll toolbar order tests passed.");
}