/**
 * Class layer test (dev tool, run with Node — no browser):
 *
 *   node dev/classes.test.mjs   (or: node dev/run-all.mjs classes)
 *
 * Covers the class layer's PURE half — everything except the window:
 *   - data/classes.json is a real config file (listed in data/manifest.json,
 *     so the browser loads it) and normalizes into the roster the UI reads;
 *   - js/player/ClassModel.js: the roster (Vanguard + Wraith in data order),
 *     the accents/insignia frames, the perk records + their numbers, the
 *     door level read from data/shipScreen.json → level.classAt (one source),
 *     the template fills the confirm/toast print, and the junk handling
 *     (an unknown id is null, a malformed roster entry is dropped);
 *   - js/player/ClassState.js: the ledger — choose, the IDEMPOTENT initial
 *     bonus (a repeat grants nothing), the different-class refusal, the
 *     skill-point bank's spend/award guards;
 *   - js/save/SaveData.js: record.playerClass round-trips (id + perks +
 *     skill points survive capture → load) and an old save with no field
 *     loads as "no class on file".
 *
 * All numbers come from the real data/*.json, not a private copy.
 */
import { pathToFileURL } from 'node:url';
import { fileURLToPath } from 'node:url';
import { dirname, join } from 'node:path';
import fs from 'node:fs';

const __dirname = dirname(fileURLToPath(import.meta.url));
const file = (p) => pathToFileURL(join(__dirname, '../js', p)).href;

// --- Load the real config (data/*.json) into the config singleton --------
const { config } = await import(file('config/Config.js'));
const dataDir = join(__dirname, '../data');
const readJson = (p) => JSON.parse(fs.readFileSync(join(dataDir, p), 'utf8'));
const configData = {};
for (const f of fs.readdirSync(dataDir)) {
  if (!f.endsWith('.json') || f === 'manifest.json') continue;
  configData[f.replace(/\.json$/i, '')] = readJson(f);
}
config.init(configData);

let failures = 0;
const check = (label, cond) => {
  console.log(`${cond ? '✔' : '✘ FAIL'}  ${label}`);
  if (!cond) failures++;
};

// ------------------------------------------------------- the shipped roster
const model = await import(file('player/ClassModel.js'));
const { ClassState } = await import(file('player/ClassState.js'));

{
  const manifest = readJson('manifest.json');
  check(
    'data/classes.json is listed in data/manifest.json (the browser loads it)',
    manifest.files.includes('classes.json'),
  );
  check('JSON parses as a config section', !!config.section('classes', null));
}

{
  const list = model.classList();
  check('the roster offers two classes', list.length === 2);
  check('in data order: vanguard, wraith', list[0]?.id === 'vanguard' && list[1]?.id === 'wraith');

  const vg = model.classDef('vanguard');
  const wr = model.classDef('wraith');
  check('Vanguard label + frame 0 (classes.png)', vg.label === 'VANGUARD' && vg.frame === 0);
  check('Wraith label + frame 1 (classes.png)', wr.label === 'WRAITH' && wr.frame === 1);
  // The theme: Vanguard reads RED, Wraith reads PURPLE (the brief).
  const rgb = (n) => [ (n >> 16) & 255, (n >> 8) & 255, n & 255 ];
  const [vr, vg2, vb] = rgb(vg.accent);
  const [ur, ug, ub] = rgb(wr.accent);
  check('Vanguard accent is a red (R leads)', vr > 160 && vr > vg2 + 40 && vr > vb + 40);
  check('Wraith accent is a purple (R + B lead, G lowest)', ur > 90 && ub > 160 && ug < Math.min(ur, ub));
  check('both accents carry a css twin for Phaser text', /^#[0-9a-fA-F]{6}$/.test(vg.accentCss) && /^#[0-9a-fA-F]{6}$/.test(wr.accentCss));

  check('copy is authored in data, not code (summary + overview)', vg.summary.length > 10 && vg.overview.length >= 2);
  check('every class banks 5 skill points', vg.skillPoints === 5 && wr.skillPoints === 5);
  check('Vanguard grants the dual cannon', vg.perks.map((p) => p.id).join() === 'dualCannon');
  check('Wraith grants the targeting computer', wr.perks.map((p) => p.id).join() === 'targetingComputer');
  check('a perk record carries its label + note', !!vg.perks[0].label && vg.perks[0].note.length > 10);

  // The perk's MECHANICS numbers live in the data (the combat code reads them).
  const dual = model.perkDef('dualCannon');
  const tc = model.perkDef('targetingComputer');
  check('dualCannon: two barrels, offset off the centreline', dual.barrels === 2 && dual.barrelOffset > 0);
  check('targetingComputer: a lead cap is configured', Number(tc.maxLead) > 0);
  check('perkDef(unknown) is null', model.perkDef('not-a-perk') === null);

  // The door level has ONE source (data/shipScreen.json → level.classAt).
  const shipLevel = config.section('shipScreen.level', {});
  check('classAt reads shipScreen.level.classAt', model.classAt() === shipLevel.classAt && model.classAt() === 5);

  // The insignia sheet: assets/images/classes.png, 128×128 frames.
  const sheet = model.iconSheet();
  check('the insignia sheet is classes.png at 128×128', /classes\.png$/.test(sheet.texture) && sheet.frameWidth === 128 && sheet.frameHeight === 128);
  check('iconFrame mirrors the roster', model.iconFrame('wraith') === 1 && model.iconFrame('nope') === null);

  // Case-insensitive lookup (the save's id / a URL param both land here).
  check('lookup is case- and space-tolerant', model.classDef(' Vanguard ')?.id === 'vanguard');
  check('unknown class → null', model.classDef('pirate') === null && model.classDef(null) === null);

  // The confirm/toast templates resolve with no leftover placeholders.
  const conf = model.confirmSpec('vanguard');
  check('confirm title names the class', conf.title.includes('VANGUARD'));
  check('confirm line1 lists the perk + skill points', conf.line1.includes('DUAL CANNON') && conf.line1.includes('+5'));
  check('confirm warns about the later price', /later/i.test(conf.line2) && /price/i.test(conf.line2));
  check('no unresolved placeholder in the confirm copy', !/[{]\w+[}]/.test(`${conf.title}${conf.line1}${conf.line2}`));
  const msg = model.successMessage('wraith');
  check('the lock-in toast reads the class + its bonus', msg.includes('WRAITH') && msg.includes('TARGETING COMPUTER') && !/[{]\w+[}]/.test(msg));

  // The briefing (Trestle's copy + his clip) is data too.
  const intro = model.introSpec();
  check('the brief names the speaker', intro.speaker === 'TRESTLE');
  check('the brief text is Trestle’s level-5 speech', /level 5 is no joke/i.test(intro.text) && /change your class later for a price/i.test(intro.text));
  check('the brief points at assets/speech/trestle/classes.mp3', intro.audio === 'assets/speech/trestle/classes.mp3');
  check(`the brief’s clip exists (${intro.audio})`, fs.existsSync(join(__dirname, '..', intro.audio)));
  const win = model.windowSpec();
  check('the feed is classes.mp4', /classes\.mp4$/.test(win.video.file));
  const clip = join(__dirname, '..', 'assets/videos', win.video.file.split('/').pop());
  check(`the feed clip exists (${win.video.file})`, fs.existsSync(clip));
}

// ------------------------------------------------- malformed data degrades
{
  const pristine = configData.classes;
  config.init({
    ...configData,
    classes: {
      enabled: true,
      classes: [
        { label: 'NO ID' }, // no id → dropped (never a dead tab)
        { id: '  ', label: 'BLANK' }, // blank id → dropped
        { id: 'solo', label: 'Solo', bonuses: { skillPoints: 'nope', perks: ['ghost', 'dualCannon'] } },
      ],
      perks: pristine.perks,
    },
  });
  const list = model.classList();
  check('a roster entry with no usable id is dropped', list.length === 1 && list[0].id === 'solo');
  check('a junk skillPoints reads 0 (never NaN)', list[0].skillPoints === 0);
  check('an unknown perk drops, a known one stays', list[0].perks.map((p) => p.id).join() === 'dualCannon');

  config.init({ ...configData, classes: { ...pristine, enabled: false } });
  check('classes.enabled:false empties the roster (the layer is off)', model.classList().length === 0);
  config.init(configData); // restore the shipped data for the rest of the run
}

// --------------------------------------------------------- the run ledger
{
  const s = new ClassState();
  check('fresh ledger: no class, no perks, empty bank', !s.hasClass && s.perks.size === 0 && s.skillPoints === 0);
  check('fresh ledger: no perk is owned', s.hasPerk('dualCannon') === false);
  check('label/frame read empty without a class', s.label === '' && s.frame === null);

  const r1 = s.choose('vanguard');
  check('choose(vanguard) succeeds', r1.ok === true && r1.id === 'vanguard');
  check('the dual cannon is owned', s.hasPerk('dualCannon') === true);
  check('5 skill points are banked', s.skillPoints === 5);
  check('the ledger reads its label + insignia frame', s.label === 'VANGUARD' && s.frame === 0);
  check('stats() names the class for the consoles', s.stats().name === 'VANGUARD');

  // THE GRANT IS IDEMPOTENT — a repeat pays nothing.
  const r2 = s.choose('vanguard');
  check('re-choosing the same class is ok, but grants nothing', r2.ok === true && r2.alreadyGranted === true);
  check('the bank did not double', s.skillPoints === 5);
  check('the perk set did not grow', s.perks.size === 1);
  const r3 = s.choose('vanguard');
  check('idempotent a third time too', s.skillPoints === 5 && r3.alreadyGranted === true);

  // A DIFFERENT class is refused (changing class is a later layer with a price).
  const r4 = s.choose('wraith');
  check('a different class is refused with reason "taken"', r4.ok === false && r4.reason === 'taken' && s.id === 'vanguard');
  const r5 = s.choose('bogus');
  check('an unknown class is refused with reason "unknown"', r5.ok === false && r5.reason === 'unknown');
  check('refusals moved nothing', s.skillPoints === 5 && s.hasPerk('targetingComputer') === false);

  // Case/spaces still resolve (a URL param, a hand-written save).
  const s2 = new ClassState();
  check('choose is case- and space-tolerant', s2.choose(' WRAITH ').ok === true && s2.hasPerk('targetingComputer'));
  check('the wraith banked its own 5 points', s2.skillPoints === 5);

  // The bank's guards.
  check('spend within the bank pays', s.spendSkillPoints(2) === true && s.skillPoints === 3);
  check('spend beyond the bank is refused', s.spendSkillPoints(99) === false && s.skillPoints === 3);
  check('award() tops the bank up', s.awardSkillPoints(4) === 7 && s.skillPoints === 7);
  check('a junk award is a no-op', s.awardSkillPoints('nope') === 7 && s.spendSkillPoints(-3) === true && s.skillPoints === 7);
  const s3 = new ClassState();
  check('with no class on file the bank cannot be spent', s3.spendSkillPoints(1) === false);
}

// --------------------------------------------------------- the save seam
{
  const { SaveManager, SAVE_FORMAT } = await import(file('save/SaveManager.js'));
  const { captureState, prepareLoad, consumeRestore, resetRunState } = await import(file('save/SaveData.js'));
  const { Galaxy } = await import(file('galaxy/Galaxy.js'));

  const SEED = 'CLASSTEST';
  const galaxy = Galaxy.create(SEED, { systemCount: 8 });
  const system = galaxy.byId.get(galaxy.currentSystemId);
  const mkRegistry = () => {
    const map = new Map();
    return { map, set(k, v) { this.map.set(k, v); }, get(k) { return this.map.get(k); } };
  };

  const classState = ClassState.fromJSON({ id: 'wraith', perks: ['targetingComputer'], skillPoints: 5, granted: true });
  const scene = {
    registry: mkRegistry(),
    galaxy,
    systemRecord: { name: system.name },
    ship: { x: 10, y: 20, rotation: 0, minerals: 0, credits: 0, stats: {} },
    discovery: null,
    classState,
    playTimeMs: 1000,
  };

  const rec = captureState(scene);
  check('capture writes record.playerClass', !!rec.playerClass && rec.playerClass.id === 'wraith');
  check('the record is plain JSON (perks as an array)', Array.isArray(rec.playerClass.perks) && JSON.stringify(rec.playerClass).includes('targetingComputer'));
  check('validateRecord accepts the class field', SaveManager.validateRecord(rec) === null);

  const reg2 = mkRegistry();
  prepareLoad(reg2, rec);
  const loaded = reg2.get('playerClass');
  check('load restores the class id', loaded instanceof ClassState && loaded.id === 'wraith');
  check('load restores the owned perks', loaded.hasPerk('targetingComputer') === true && loaded.hasPerk('dualCannon') === false);
  check('load restores the skill-point bank', loaded.skillPoints === 5);
  check('load keeps the grant witness (no double bonus after a load)', loaded.granted === true && loaded.choose('wraith').alreadyGranted === true && loaded.skillPoints === 5);
  consumeRestore(reg2);

  // An OLD save (predating the class layer) still loads — no class on file.
  const legacy = { ...rec };
  delete legacy.playerClass;
  const reg3 = mkRegistry();
  prepareLoad(reg3, legacy);
  check('a save with no playerClass field stages nothing (old saves load)', reg3.get('playerClass') === null);

  // A hand-edited record degrades instead of handing out unknown perks.
  const bogus = { ...rec, playerClass: { id: 'pirate-lord', perks: ['dualCannon', 'godmode'], skillPoints: 9999, granted: true } };
  const reg4 = mkRegistry();
  prepareLoad(reg4, bogus);
  check('an unknown class id drops the whole class', reg4.get('playerClass').hasClass === false);

  const mixed = { ...rec, playerClass: { id: 'wraith', perks: ['dualCannon'], skillPoints: -7, granted: true } };
  const reg5 = mkRegistry();
  prepareLoad(reg5, mixed);
  const strict = reg5.get('playerClass');
  check('a perk the class does not own is dropped on load', strict.hasClass && strict.hasPerk('dualCannon') === false);
  check('a negative bank clamps to 0', strict.skillPoints === 0);

  // New Game clears it.
  resetRunState(reg2);
  check('resetRunState clears the class ledger', reg2.get('playerClass') === null);
}

console.log(failures ? `\n${failures} FAILURE(S)` : '\nclasses: all checks passed');
process.exit(failures ? 1 : 0);