'use strict';

const test = require('node:test');
const assert = require('node:assert/strict');
const fs = require('node:fs');
const path = require('node:path');
const { inspectMap } = require('../src/inspector');
const { loadAtlasDirs } = require('../src/atlas-loader');

const FIX_MAP = path.join(__dirname, 'fixtures', 'maps', 'inspect_sample.map.json');
const FIX_ATLAS = path.join(__dirname, 'fixtures', 'atlases-inspector');
const loadMap = () => JSON.parse(fs.readFileSync(FIX_MAP, 'utf8'));

test('inspectMap: header lists id, schema_version, size', () => {
  const text = inspectMap(loadMap(), {});
  assert.match(text, /Map: inspect_sample/);
  assert.match(text, /schema_version=2/);
  assert.match(text, /size=4x4/);
});

test('inspectMap: atlas section lists each declared atlas with resolved/not-found marker', () => {
  const { registry } = loadAtlasDirs([FIX_ATLAS]);
  const text = inspectMap(loadMap(), registry);
  assert.match(text, /\[0\] atlas_a.*resolved/);
  // atlas_b is not in the FIX_ATLAS fixture dir
  assert.match(text, /\[1\] atlas_b.*not found/);
});

test('inspectMap: without registry, atlases show "no registry" marker', () => {
  const text = inspectMap(loadMap(), {});
  assert.match(text, /\[0\] atlas_a.*no registry/);
});

test('inspectMap: per-layer cell counts are correct', () => {
  const text = inspectMap(loadMap(), {});
  // surface has all 16 cells set
  assert.match(text, /surface\s+16 cells set,\s+0 empty/);
  // wall has 12 set, 4 empty (the 2x2 hole)
  assert.match(text, /wall\s+12 cells set,\s+4 empty/);
});

test('inspectMap: top tiles include atlas/tile components', () => {
  const text = inspectMap(loadMap(), {});
  // surface tile (0,1,0) = grass appears 12 times
  assert.match(text, /atlas=0 tile=1.*× ?12/);
  // surface tile (0,2,0) = stone appears 4 times
  assert.match(text, /atlas=0 tile=2.*× ?4/);
});

test('inspectMap: with registry, top tiles show resolved name', () => {
  const { registry } = loadAtlasDirs([FIX_ATLAS]);
  const text = inspectMap(loadMap(), registry);
  assert.match(text, /atlas_a:grass/);
  assert.match(text, /atlas_a:stone/);
});

test('inspectMap: roof line shows flagged-cell count', () => {
  const text = inspectMap(loadMap(), {});
  assert.match(text, /Roof: 4 cells flagged/);
});

test('inspectMap: map without roof omits roof section gracefully', () => {
  const m = loadMap();
  delete m.roof;
  const text = inspectMap(m, {});
  assert.match(text, /Roof:\s*0 cells flagged|Roof: \(none\)/);
});

test('inspectMap: empty layers are not listed as top-tile groups', () => {
  const m = loadMap();
  m.layers.topsurface = { tiles: new Array(16).fill(0) };
  const text = inspectMap(m, {});
  assert.match(text, /topsurface\s+0 cells set,\s+16 empty/);
  // The "top tiles" block under topsurface should be absent (or "none")
  assert.doesNotMatch(text.split('topsurface')[1].split(/\n[a-z]/)[0], /atlas=\d+ tile=\d+/);
});