import assert from 'node:assert/strict';
import { readFile } from 'node:fs/promises';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import ts from 'typescript';

const projectRoot = path.resolve(
  path.dirname(fileURLToPath(import.meta.url)),
  '..'
);
const helperPath = path.join(
  projectRoot,
  'src/game/ui/dialoguePortrait.ts'
);
const helperSource = await readFile(helperPath, 'utf8');
const transpiledHelper = ts.transpileModule(helperSource, {
  compilerOptions: {
    module: ts.ModuleKind.ES2022,
    target: ts.ScriptTarget.ES2022
  },
  fileName: helperPath
}).outputText;
const helperModule = await import(
  `data:text/javascript;base64,${Buffer.from(transpiledHelper).toString('base64')}`
);
const {
  calculateDialogueFacePortraitLayout,
  fitDialogueFacePortrait
} = helperModule;

const squareLayout = calculateDialogueFacePortraitLayout(
  1254,
  1254,
  220
);
assert.deepEqual(
  {
    cropX: squareLayout.cropX,
    cropY: squareLayout.cropY,
    cropSize: squareLayout.cropSize
  },
  {
    cropX: 251,
    cropY: 44,
    cropSize: 752
  },
  'The standard portrait must use the established square face-and-shoulders crop.'
);
assertCenteredCrop(squareLayout, 1254, 1254, 220);

const landscapeLayout = calculateDialogueFacePortraitLayout(
  1600,
  1000,
  192
);
assert.deepEqual(
  {
    cropX: landscapeLayout.cropX,
    cropY: landscapeLayout.cropY,
    cropSize: landscapeLayout.cropSize
  },
  {
    cropX: 500,
    cropY: 35,
    cropSize: 600
  },
  'Landscape sources must still produce a square, horizontally centered face crop.'
);
assertCenteredCrop(landscapeLayout, 1600, 1000, 192);

const portraitLayout = calculateDialogueFacePortraitLayout(
  1000,
  1600,
  218
);
assert.deepEqual(
  {
    cropX: portraitLayout.cropX,
    cropY: portraitLayout.cropY,
    cropSize: portraitLayout.cropSize
  },
  {
    cropX: 200,
    cropY: 56,
    cropSize: 600
  },
  'Portrait-oriented sources must preserve the upper face-and-shoulders framing.'
);
assertCenteredCrop(portraitLayout, 1000, 1600, 218);

assert.throws(
  () => calculateDialogueFacePortraitLayout(0, 1254, 220),
  RangeError,
  'Invalid source dimensions must fail explicitly.'
);
assert.throws(
  () => calculateDialogueFacePortraitLayout(1254, 1254, Number.NaN),
  RangeError,
  'Invalid display dimensions must fail explicitly.'
);

const imageCalls = [];
const image = {
  frame: {
    realWidth: 1254,
    realHeight: 1254
  },
  setCrop(...values) {
    imageCalls.push(['crop', ...values]);
    return this;
  },
  setOrigin(...values) {
    imageCalls.push(['origin', ...values]);
    return this;
  },
  setScale(...values) {
    imageCalls.push(['scale', ...values]);
    return this;
  }
};
const appliedLayout = fitDialogueFacePortrait(image, 220);
assert.deepEqual(
  imageCalls.map(([operation]) => operation),
  ['crop', 'origin', 'scale'],
  'Applying the layout must crop, center the crop origin, and then scale it.'
);
assert.deepEqual(
  imageCalls[0],
  [
    'crop',
    appliedLayout.cropX,
    appliedLayout.cropY,
    appliedLayout.cropSize,
    appliedLayout.cropSize
  ]
);
assert.deepEqual(
  imageCalls[1],
  ['origin', appliedLayout.originX, appliedLayout.originY]
);
assert.deepEqual(
  imageCalls[2],
  ['scale', appliedLayout.scale]
);

await assertSceneIntegration(
  'src/game/scenes/StoryScene.ts',
  3
);
await assertSceneIntegration(
  'src/game/scenes/CityStayScene.ts',
  1
);
await assertSceneIntegration(
  'src/game/scenes/PrologueVillageScene.ts',
  1
);
await assertSceneIntegration(
  'src/game/scenes/PrologueMilitiaCampScene.ts',
  1
);
await assertSceneIntegration(
  'src/game/scenes/CampVisitExplorationScene.ts',
  1
);

console.log(
  'Verified shared dialogue portrait face crops, centered origins, retained display sizes, and all story/exploration dialogue integrations.'
);

function assertCenteredCrop(
  layout,
  sourceWidth,
  sourceHeight,
  displaySize
) {
  const centeredX =
    layout.cropX +
    layout.cropSize / 2 -
    layout.originX * sourceWidth;
  const centeredY =
    layout.cropY +
    layout.cropSize / 2 -
    layout.originY * sourceHeight;
  assert.ok(
    Math.abs(centeredX) < 1e-9 &&
      Math.abs(centeredY) < 1e-9,
    'The visible crop center must remain anchored to the image position.'
  );
  assert.ok(
    Math.abs(layout.cropSize * layout.scale - displaySize) <
      1e-9,
    'The cropped portrait must retain its requested display size.'
  );
}

async function assertSceneIntegration(relativePath, minimumCalls) {
  const source = await readFile(
    path.join(projectRoot, relativePath),
    'utf8'
  );
  assert.match(
    source,
    /import\s+\{\s*fitDialogueFacePortrait\s*\}\s+from\s+'\.\.\/ui\/dialoguePortrait';/,
    `${relativePath} must import the shared dialogue portrait helper.`
  );
  const callCount =
    source.match(/fitDialogueFacePortrait\s*\(/g)?.length ?? 0;
  assert.ok(
    callCount >= minimumCalls,
    `${relativePath} must apply the shared helper at every portrait rendering path.`
  );
}