'use strict';

const assert = require('node:assert/strict');
const fs = require('node:fs');
const path = require('node:path');
const vm = require('node:vm');

const roots = ['.', 'release/UNIVERSAL_SpineViewer'];

function functionBody(source, name, nextName) {
	const start = source.indexOf(`\tfunction ${name}(`);
	const end = source.indexOf(`\n\tfunction ${nextName}(`, start + 1);
	assert.ok(start >= 0 && end > start, `missing function ${name}`);
	return source.slice(start, end);
}

for (const root of roots) {
	const viewerPath = path.join(root, 'viewer/spine.html');
	const html = fs.readFileSync(viewerPath, 'utf8');
	const script = html.match(/<script>([\s\S]*?)<\/script>/)[1];
	new vm.Script(script);

	assert.match(script, /const SETUP_POSE_INDEX = -1;/);
	assert.match(script, /let currentAnim = SETUP_POSE_INDEX[\s\S]*let playing = false/);
	assert.match(script, /setupItem\.dataset\.index = String\(SETUP_POSE_INDEX\)/);
	assert.match(script, /showSetupPose\(\);\s*captureStableFitBounds\(\);\s*fitToCanvas\(\);/);
	assert.match(script, /state\.clearTracks[\s\S]*skeleton\.setToSetupPose/);
	assert.match(script, /if \(idx === SETUP_POSE_INDEX\)[\s\S]*showSetupPose\(\)/);

	const fit = functionBody(script, 'fitToCanvas', 'draw');
	assert.match(fit, /const bounds = stableFitBounds;/);
	assert.doesNotMatch(fit, /getBounds\(/, 'wheel/resize fitting must not sample an animated frame');

	const capture = functionBody(script, 'captureStableFitBounds', 'fitToCanvas');
	assert.match(capture, /getBounds\(skeleton\)/);

	const manifest = JSON.parse(fs.readFileSync(path.join(root, 'manifest.json'), 'utf8'));
	for (const language of manifest.languages) {
		const locale = JSON.parse(fs.readFileSync(path.join(root, '_locales', language + '.json'), 'utf8'));
		assert.equal(locale.viewer.setupPose, 'Setup Pose', `${root}/${language} must keep the Spine term untranslated`);
	}
}

console.log('PASS: Setup Pose is the default still frame and zoom uses stable bounds');