import test from 'node:test';
import assert from 'node:assert/strict';
import { readFile } from 'node:fs/promises';

const read = (path) => readFile(new URL(`../${path}`, import.meta.url), 'utf8');

test('mobile HUD uses split helm frame and knob assets', async () => {
  const source = await read('src/mobile-hud.js');

  assert.match(source, /import helmFrameSrc from '.\/assets\/controller\/helm-frame\.js'/);
  assert.match(source, /import helmKnobSrc from '.\/assets\/controller\/helm-knob\.js'/);
  assert.doesNotMatch(source, /helmSpriteSheetSrc/);
  assert.doesNotMatch(source, /helm-sheet\.webp/);
  assert.doesNotMatch(source, /backgroundPosition = .*column/);
});

test('drag control emits and HUD consumes one shared helm vector event', async () => {
  const [index, hud] = await Promise.all([
    read('index.html'),
    read('src/mobile-hud.js'),
  ]);

  assert.match(index, /CustomEvent\('airship:helm-vector'/);
  assert.match(index, /emitHelmVector\(dx \/ radius, dy \/ radius\)/);
  assert.match(index, /emitHelmVector\(0, 0\)/);

  assert.match(hud, /addEventListener\('airship:helm-vector'/);
  assert.match(hud, /setHelmKnob\(event\.detail\?\.x \?\? 0, event\.detail\?\.y \?\? 0\)/);
});

test('top HUD and cannon controls use direct image modules', async () => {
  const source = await read('src/mobile-hud.js');

  assert.match(source, /import topHudSrc from '.\/assets\/controller\/top-hud\.js'/);
  assert.match(source, /import cannonRoundelSrc from '.\/assets\/controller\/cannon-roundel\.js'/);
  assert.match(source, /addPiece\('steam-top', topHudSrc/);
  assert.match(source, /addPiece\('steam-cannon-port', cannonRoundelSrc/);
  assert.match(source, /addPiece\('steam-cannon-starboard', cannonRoundelSrc/);
});

test('player collision callback queues hits and processing occurs in scene update', async () => {
  const source = await read('src/game-v4.js');

  assert.match(source, /this\.pendingPlayerHits\.push\(\{[\s\S]*?shot,[\s\S]*?damage,[\s\S]*?x: shot\.x,[\s\S]*?y: shot\.y/);
  assert.match(source, /this\.processPlayerHits\(\)/);
  assert.match(source, /reducePlayerVolleyHits\(\{/);
  assert.match(source, /combat:player-hit-queued/);
  assert.match(source, /combat:player-hit-processed/);
});

test('wide-screen HUD keeps visual controls aligned with touch hit-zones', async () => {
  const source = await read('src/mobile-hud.js');

  assert.match(source, /@media \(min-width: 700px\)/);
  assert.match(source, /--steam-wide-helm-size:/);
  assert.match(source, /--steam-wide-cannon-size:/);
  assert.match(source, /\.steam-radar-wrap,\s*#mobile-controls\.controller-active #drag-stick/);
  assert.match(source, /\.steam-cannon-port,\s*\.steam-cannon-starboard,\s*#mobile-controls\.controller-active \.mobile-control\.port,\s*#mobile-controls\.controller-active \.mobile-control\.starboard/);
  assert.match(source, /right: calc\(var\(--steam-wide-edge-right\) \+ var\(--steam-wide-cannon-size\) \+ 14px\)/);
});

test('wide-screen HUD caps portrait-scaled artwork instead of stretching with viewport width', async () => {
  const source = await read('src/mobile-hud.js');

  assert.match(source, /\.steam-top \{[\s\S]*?width: min\(64vw, 560px\)/);
  assert.match(source, /\.steam-player-card \{[\s\S]*?width: min\(34vw, 360px\)/);
  assert.match(source, /\.steam-enemy-card \{[\s\S]*?width: min\(30vw, 330px\)/);
});

test('non-lethal player hit processing does not mutate the player object or game state', async () => {
  const source = await read('src/game-v4.js');
  const match = /processPlayerHits\(\) \{([\s\S]*?)\n  spawnExplosion\(/.exec(source);
  assert.ok(match, 'processPlayerHits block should be found');

  const block = match[1];
  assert.match(block, /this\.playerHull = result\.hull/);
  assert.match(block, /if \(gameOver\) this\.finishGame\(\)/);

  assert.doesNotMatch(block, /this\.player\.setVelocity\(/);
  assert.doesNotMatch(block, /this\.player\.setVisible\(/);
  assert.doesNotMatch(block, /this\.player\.setActive\(/);
  assert.doesNotMatch(block, /this\.player\.destroy\(/);
  assert.doesNotMatch(block, /this\.player\.body\.enable\s*=/);
  assert.doesNotMatch(block, /this\.gameState\s*=/);
});

test('a hit frame emits a completion marker after the rest of scene update runs', async () => {
  const source = await read('src/game-v4.js');

  assert.match(source, /const hadQueuedPlayerHit = this\.pendingPlayerHits\.length > 0/);
  assert.match(source, /this\.checkGameState\(\);[\s\S]*?combat:post-hit-frame-complete/);
});

test('player hit FX runs after queued hit processing, outside the overlap callback', async () => {
  const source = await read('src/game-v4.js');

  assert.match(source, /this\.pendingPlayerHits\.push\(\{[\s\S]*?x: shot\.x,[\s\S]*?y: shot\.y/);
  assert.match(source, /if \(acceptedHits\.length > 0\) \{[\s\S]*?this\.spawnExplosion\(impact\.x, impact\.y, 0\.32\)/);
  assert.match(source, /this\.flashShip\(this\.player, 0xffcccc\)/);
  assert.match(source, /combat:player-hit-fx-error/);
});

test('pirate broadsides assign a volley id and player damage deduplicates by volley', async () => {
  const source = await read('src/game-v4.js');

  assert.match(source, /const volleyId = actor === 'pirate' \? this\.nextPirateVolleyId\+\+ : null/);
  assert.match(source, /shot\.setData\('volleyId', volleyId\)/);
  assert.match(source, /volleyId: shot\.getData\('volleyId'\)/);
  assert.match(source, /seenVolleyIds: this\.damagedPlayerVolleys/);
  assert.match(source, /this\.damagedPlayerVolleys = result\.seenVolleyIds/);
});