// End-to-end check that a Kanban card is shown with the editor's own Markdown (lists, headings, code, math, images…).
const { app, BrowserWindow } = require('electron');
const path = require('path');
const os = require('os');
const fs = require('fs');

const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'ink-e2e-kcards-'));
const vault = path.join(tmp, 'Vault');
fs.mkdirSync(vault);
const BOARD = `## To do

- [ ] Plain card with **bold**, *italic*, ==mark== and [[Spec]]
- [ ] Release checklist
  - first sub item
  - second sub item
  1. numbered one
  > a quoted line
- [ ] # Heading in a card
  with a paragraph below
  \`\`\`js
  const a = 1;
  \`\`\`
- [x] Done one with \`code\` and math $x^2$

## Doing

- [ ] Card with image
  ![](missing.png)
`;
fs.writeFileSync(path.join(vault, 'Spec.md'), 'The spec.\n');
fs.writeFileSync(path.join(vault, 'Plan.md'), '---\nkanban-plugin: basic\n---\n\n' + BOARD);
app.setPath('userData', tmp);
fs.writeFileSync(path.join(tmp, 'settings.json'), JSON.stringify({ vault, lastPage: 'Plan', bounds: { width: 1300, height: 900 } }));
require('../electron/main.cjs');

const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
const failures = [];
const check = (name, ok, extra = '') => {
  console.log(`${ok ? 'PASS' : 'FAIL'} ${name}${extra ? ' — ' + extra : ''}`);
  if (!ok) failures.push(name);
};

app.whenReady().then(async () => {
  let win;
  for (let i = 0; i < 80 && !(win = BrowserWindow.getAllWindows()[0]); i++) await sleep(100);
  const wc = win.webContents;
  if (wc.isLoading()) await new Promise((r) => wc.once('did-finish-load', r));
  const js = (code) => wc.executeJavaScript(`(async () => { ${code} })()`);
  const count = (sel) => js(`return document.querySelectorAll(${JSON.stringify(sel)}).length`);
  const card = (i) => `document.querySelectorAll('.kcard')[${i}]`;

  try {
    await sleep(2000);
    check('inline formatting is the editor\'s', await js(`const t = ${card(0)}.querySelector('.kc-text'); return !!t.querySelector('b') && !!t.querySelector('i') && !!t.querySelector('mark') && !!t.querySelector('.wl')`));
    check('lists inside a card are real lists', (await js(`return ${card(1)}.querySelectorAll('.b-bullet').length`)) === 2 && (await js(`return ${card(1)}.querySelectorAll('.b-number').length`)) === 1);
    check('a quote is a quote', (await js(`return ${card(1)}.querySelectorAll('.b-quote').length`)) === 1);
    check('a heading is a heading', (await js(`return ${card(2)}.querySelectorAll('.b-h1').length`)) === 1);
    check('a code block is highlighted', (await js(`return ${card(2)}.querySelectorAll('.code pre.c span').length`)) > 0);
    check('inline math is typeset', (await js(`return ${card(3)}.querySelectorAll('.katex').length`)) === 1);
    check('a picture that isn\'t there says so', (await count('.kcard .img.broken, .kcard .img .img-miss')) > 0);

    await js(`${card(0)}.querySelector('.wl').click()`);
    await sleep(900);
    check('a [[link]] in a card still opens the page', (await js(`return document.querySelector('.title')?.textContent`)) === 'Spec');
    await js(`document.querySelector('.row[data-id="Plan"]').click()`);
    await sleep(1000);

    await js(`${card(1)}.querySelector('.kc-text').click()`);
    await sleep(400);
    const raw = await js(`return document.querySelector('.kedit')?.value`);
    check('clicking a card edits its Markdown as written', /^Release checklist\n- first sub item\n- second sub item\n1\. numbered one\n> a quoted line$/.test(raw || ''), JSON.stringify(raw));
    await js(`document.querySelector('.kedit').dispatchEvent(new KeyboardEvent('keydown', { key: 'Escape', bubbles: true }))`);
    await sleep(600);
    check('...and leaving it unchanged leaves the file as it was', fs.readFileSync(path.join(vault, 'Plan.md'), 'utf8').endsWith(BOARD));

    // Test card auto-closing and slash menu
    await js(`document.querySelector('.kadd').click()`);
    await sleep(400);
    check('new card textarea focused', await js(`return document.activeElement?.classList.contains('kedit')`));

    const sendKey = (key, opts = {}) => js(`
      const el = document.querySelector('.kedit');
      el.dispatchEvent(new KeyboardEvent('keydown', { key: ${JSON.stringify(key)}, bubbles: true, cancelable: true, ...${JSON.stringify(opts)} }));
    `);
    const insertChar = (char) => js(`
      const el = document.querySelector('.kedit');
      const ev = new KeyboardEvent('keydown', { key: ${JSON.stringify(char)}, bubbles: true, cancelable: true });
      const notPrevented = el.dispatchEvent(ev);
      if (notPrevented) {
        const start = el.selectionStart, end = el.selectionEnd;
        el.setRangeText(${JSON.stringify(char)}, start, end, 'end');
      }
      el.dispatchEvent(new Event('input', { bubbles: true }));
    `);

    // Type '*' then '*'
    await insertChar('*');
    await insertChar('*');
    const valStars = await js(`return [document.querySelector('.kedit').value, document.querySelector('.kedit').selectionStart, document.querySelector('.kedit').selectionEnd]`);
    check('typing ** auto-closes to **** with caret in middle', valStars[0] === '****' && valStars[1] === 2 && valStars[2] === 2, JSON.stringify(valStars));

    // Backspace unpairing in ****
    await sendKey('Backspace');
    const valUnpaired = await js(`return document.querySelector('.kedit').value`);
    check('backspace inside **** unpairs both', valUnpaired === '', JSON.stringify(valUnpaired));

    // Type '('
    await insertChar('(');
    const valParen = await js(`return [document.querySelector('.kedit').value, document.querySelector('.kedit').selectionStart]`);
    check('typing ( auto-closes to () with caret in middle', valParen[0] === '()' && valParen[1] === 1, JSON.stringify(valParen));

    // Step over closer ')'
    await insertChar(')');
    const valStepOver = await js(`return [document.querySelector('.kedit').value, document.querySelector('.kedit').selectionStart]`);
    check('typing ) steps over existing closer', valStepOver[0] === '()' && valStepOver[1] === 2, JSON.stringify(valStepOver));

    // Test / slash menu
    await js(`const el = document.querySelector('.kedit'); el.value = ''; el.dispatchEvent(new Event('input', { bubbles: true }));`);
    await insertChar('/');
    await sleep(300);
    const slashOpen = await js(`return !document.querySelector('.kslash')?.hidden && document.querySelector('.kslash')?.querySelectorAll('.si').length > 0`);
    check('typing / opens Kanban slash menu', !!slashOpen);

    // Filter slash menu with 'c'
    await insertChar('c');
    await sleep(300);
    const slashMatch = await js(`return document.querySelector('.kslash .si.on b')?.textContent`);
    check('typing c filters slash commands to Callout', slashMatch === 'Callout', JSON.stringify(slashMatch));

    // Press Enter to apply Callout
    await sendKey('Enter');
    await sleep(300);
    const afterSlash = await js(`return document.querySelector('.kedit')?.value`);
    check('Enter applies slash command to card', afterSlash === '> [!NOTE]\n> ', JSON.stringify(afterSlash));

    // Cancel edit
    await sendKey('Escape');
    await sleep(400);

  } catch (err) {
    check('harness', false, err.stack);
  }
  fs.rmSync(tmp, { recursive: true, force: true });
  console.log(failures.length ? `\n${failures.length} check(s) failed` : '\nkanban cards e2e passed!');
  app.exit(failures.length ? 1 : 0);
});