// UI wiring tests.
//
// These drive the real app module against a fake DOM (test/fixtures/fake-dom.js).
// They prove the wiring runs — imports resolve, handlers fire, the screens
// render the right text, choices reach the engine, saves and the feedback log
// are written. They are not a substitute for playing it in a browser: layout,
// styling, file downloads and file imports are outside their reach.

import { test } from 'node:test';
import assert from 'node:assert/strict';
import { installFakeDom, byClass, firstByClass, byTag } from './fixtures/fake-dom.js';

/** Boot the app fresh against a clean fake DOM. */
async function boot() {
  const dom = installFakeDom();
  // A fresh module instance per test: the app holds module-level state.
  const { boot: bootApp } = await import(`../src/ui/app.js?t=${Math.random()}`);
  bootApp(dom.root);
  return dom;
}

const text = (root) => root.textContent;
const optionButtons = (root) => byClass(root, 'option');
const enabledOptions = (root) => optionButtons(root).filter((b) => !b.disabled);

test('the app boots to a playable turn screen', async () => {
  const dom = await boot();
  try {
    assert.ok(firstByClass(dom.root, 'screen--turn'), 'the turn screen rendered');
    assert.match(text(dom.root), /Day 1/, 'the day counter is showing');
    assert.match(text(dom.root), /Marlene Hobb/, 'the characters are listed');
    assert.match(text(dom.root), /Trevor Pike/);
    assert.ok(enabledOptions(dom.root).length > 0, 'there is something to click');
  } finally {
    dom.restore();
  }
});

test('the header shows the pack\'s declared stats, and hides what it asks to hide', async () => {
  const dom = await boot();
  try {
    const stats = text(firstByClass(dom.root, 'stats'));
    assert.match(stats, /Money/);
    assert.match(stats, /\$520/, 'money is formatted as money');
    assert.match(stats, /Negotiation/);
    assert.match(stats, /Standing/, 'reputation is renamed by the pack');
    assert.doesNotMatch(stats, /Debt/, 'debt is hidden while it is zero');
    assert.doesNotMatch(stats, /Notable/, 'hidden state stays out of the header');
  } finally {
    dom.restore();
  }
});

test('choosing an option shows the outcome, the deltas and the upkeep', async () => {
  const dom = await boot();
  try {
    enabledOptions(dom.root)[0].click();

    assert.ok(firstByClass(dom.root, 'outcome'), 'the outcome view rendered');
    assert.match(text(dom.root), /What that changed/);
    assert.match(text(dom.root), /And then the day happened/, 'upkeep is shown separately');

    const upkeep = text(firstByClass(dom.root, 'outcome__upkeep'));
    // Labelled by what caused it, not by the path it moved — this is the
    // answer to "what was that daily drain for?".
    assert.match(upkeep, /Coffee, transit, lunch/);
    assert.doesNotMatch(upkeep, /Money/, 'the bare path name is not useful here');
    assert.ok(byClass(dom.root, 'change').length > 0, 'individual changes are listed');
  } finally {
    dom.restore();
  }
});

test('advancing moves to the next turn', async () => {
  const dom = await boot();
  try {
    enabledOptions(dom.root)[0].click();
    firstByClass(dom.root, 'button--next').click();

    assert.ok(firstByClass(dom.root, 'scenario'), 'back to choosing');
    assert.match(text(dom.root), /Day 2/);
  } finally {
    dom.restore();
  }
});

test('a locked option is shown, disabled, and says what it needs', async () => {
  const dom = await boot();
  try {
    // Play until a locked option appears — the pack gates several.
    let locked = null;
    for (let i = 0; i < 40 && !locked; i++) {
      locked = optionButtons(dom.root).find((b) => b.disabled);
      if (locked) break;
      enabledOptions(dom.root)[0].click();
      firstByClass(dom.root, 'button--next').click();
    }
    assert.ok(locked, 'a gated option should turn up within 40 turns');
    assert.match(locked.textContent, /Needs /, 'the requirement is spelled out');
    locked.click(); // must be inert
    assert.ok(firstByClass(dom.root, 'scenario'), 'clicking a locked option does nothing');
  } finally {
    dom.restore();
  }
});

test('progress is written to local storage and restored on the next boot', async () => {
  const dom = await boot();
  try {
    enabledOptions(dom.root)[0].click();
    firstByClass(dom.root, 'button--next').click();
    enabledOptions(dom.root)[0].click();
    firstByClass(dom.root, 'button--next').click();

    const saved = JSON.parse(dom.storage.getItem('theladder.save.v1'));
    assert.equal(saved.state.turn, 3);

    // Boot again against the same storage: the run should resume, not restart.
    const { boot: bootAgain } = await import(`../src/ui/app.js?t=${Math.random()}`);
    const secondRoot = dom.document.createElement('div');
    bootAgain(secondRoot);
    assert.match(text(secondRoot), /Day 3/, 'the saved run resumed');
  } finally {
    dom.restore();
  }
});

test('every played turn is logged, separately from the save', async () => {
  const dom = await boot();
  try {
    for (let i = 0; i < 3; i++) {
      enabledOptions(dom.root)[0].click();
      firstByClass(dom.root, 'button--next').click();
    }

    const log = JSON.parse(dom.storage.getItem('theladder.feedback.v1'));
    assert.equal(log.length, 3);

    const entry = log[0];
    assert.ok(entry.event_id && entry.action_taken, 'the choice is recorded');
    assert.ok(Array.isArray(entry.changes) && entry.changes.length > 0, 'the diff is recorded');
    assert.ok(Array.isArray(entry.offered), 'the options offered are recorded');
    assert.equal(entry.rating, null, 'feedback starts empty');

    const save = JSON.parse(dom.storage.getItem('theladder.save.v1'));
    assert.equal(save.state.history.length, 3);
    assert.ok(!JSON.stringify(save).includes('rating'), 'feedback is not mixed into the save');
  } finally {
    dom.restore();
  }
});

test('the feedback widget is optional, and records a rating when used', async () => {
  const dom = await boot();
  try {
    enabledOptions(dom.root)[0].click();

    const ratings = byClass(dom.root, 'rating');
    assert.equal(ratings.length, 3, 'up, neutral and down');

    ratings[0].click();
    const log = JSON.parse(dom.storage.getItem('theladder.feedback.v1'));
    assert.equal(log[0].rating, 'up');

    // Clicking the same rating again clears it.
    byClass(dom.root, 'rating')[0].click();
    assert.equal(JSON.parse(dom.storage.getItem('theladder.feedback.v1'))[0].rating, null);
  } finally {
    dom.restore();
  }
});

test('the comment fields write through without re-rendering under the cursor', async () => {
  const dom = await boot();
  try {
    enabledOptions(dom.root)[0].click();
    firstByClass(dom.root, 'feedback__toggle').click();

    const fields = byTag(firstByClass(dom.root, 'feedback__detail'), 'textarea');
    assert.equal(fields.length, 2, 'a comment box and a "what did you want to do" box');

    fields[0].value = 'the wheel bit made me laugh';
    fields[0].dispatch('input');
    fields[1].value = 'I wanted to just hide in the stairwell';
    fields[1].dispatch('input');

    // The same element objects must still be live — a re-render would have
    // replaced them and thrown the player out of the box they are typing in.
    assert.equal(byTag(firstByClass(dom.root, 'feedback__detail'), 'textarea')[0], fields[0]);

    // Written through on the way to the next turn.
    firstByClass(dom.root, 'button--next').click();
    const entry = JSON.parse(dom.storage.getItem('theladder.feedback.v1'))[0];
    assert.equal(entry.comment, 'the wheel bit made me laugh');
    assert.equal(entry.desired_but_unavailable_action, 'I wanted to just hide in the stairwell');
  } finally {
    dom.restore();
  }
});

test('the retrospective summarises the run and is not an ending', async () => {
  const dom = await boot();
  try {
    for (let i = 0; i < 6; i++) {
      enabledOptions(dom.root)[0].click();
      firstByClass(dom.root, 'button--next').click();
    }
    firstByClass(dom.root, 'button').click(); // "Wrap up my career"

    assert.ok(firstByClass(dom.root, 'screen--retrospective'));
    const body = text(dom.root);
    assert.match(body, /Career retrospective/);
    assert.match(body, /6 days in the mailroom/);
    assert.match(body, /Where you stand with people/);
    assert.match(body, /Marlene Hobb/);
    assert.match(body, /Situations you saw/);

    firstByClass(dom.root, 'button--primary').click(); // "Keep going"
    assert.ok(firstByClass(dom.root, 'screen--turn'), 'the player can carry on');
    assert.match(text(dom.root), /Day 7/);
  } finally {
    dom.restore();
  }
});

test('a run with nothing notable still gets a retrospective', async () => {
  const dom = await boot();
  try {
    firstByClass(dom.root, 'button').click(); // wrap up on turn one
    assert.ok(firstByClass(dom.root, 'screen--retrospective'));
    assert.match(text(dom.root), /Nothing that anybody would write down/);
  } finally {
    dom.restore();
  }
});

test('the header names the day and counts the week', async () => {
  const dom = await boot();
  try {
    const hud = text(firstByClass(dom.root, 'hud'));
    assert.match(hud, /Monday/, 'the day is named');
    assert.match(hud, /Week 1 · Day 1/, 'the week and the day number are both shown');
  } finally {
    dom.restore();
  }
});

test('the diary says what is coming, so the drain is not a mystery', async () => {
  const dom = await boot();
  try {
    const diary = text(firstByClass(dom.root, 'diary'));
    assert.match(diary, /Wages in 4 days/, 'payday is announced before it lands');
    assert.match(diary, /Rent in 7 days/);
    assert.doesNotMatch(diary, /Loan service/, 'charges that do not apply are not listed');
  } finally {
    dom.restore();
  }
});

test('wages and rent appear in the ledger on the days they fall due', async () => {
  const dom = await boot();
  try {
    const ledgerOn = [];
    for (let day = 1; day <= 8; day++) {
      enabledOptions(dom.root)[0].click();
      const upkeep = firstByClass(dom.root, 'outcome__upkeep');
      ledgerOn.push(upkeep ? upkeep.textContent : '');
      firstByClass(dom.root, 'button--next').click();
    }
    assert.match(ledgerOn[0], /Coffee, transit, lunch/, 'small change every day');
    assert.doesNotMatch(ledgerOn[0], /Wages/, 'no wages on day 1');
    assert.match(ledgerOn[4], /Wages/, 'paid on day 5, the first Friday');
    assert.match(ledgerOn[7], /Rent/, 'rent on day 8, the second Monday');
  } finally {
    dom.restore();
  }
});