const { test } = require('node:test');
const assert = require('node:assert');
const fs = require('node:fs');
const path = require('node:path');

const html = fs.readFileSync(path.join(__dirname, '..', 'index.html'), 'utf8');

function extractBlock(startMarker, endMarker) {
	const start = html.indexOf(startMarker);
	const end = html.indexOf(endMarker, start);
	if (start < 0 || end < 0) throw new Error('block not found: ' + startMarker);
	return html.slice(start, end);
}

// The codec map's select fields reference ACCESSTECH; only the date/time
// codec is exercised here, but the map literal still evaluates that list.
eval(extractBlock('const ACCESSTECH = [', 'const EVENT_FORMS = {').replace(/^const /gm, 'var '));
eval(extractBlock('// ===== PLI data dictionary =====', 'async function pysimPliRender')
	.replace(/^const /gm, 'var '));

test('the PLI date/time codec uses the 8.39 TP-SCTS coding', () => {
	const c = PLI_CODECS['03'];
	assert.strictEqual(c.tlv, '2607');
	// +03:00: swapped semi-octet BCD digits, the time zone in quarters of an
	// hour (0x21 = 12 quarters) - the eventDateTimeTlv / _encode_scts vectors
	assert.strictEqual(c.encode({ dt: '2026-09-30', tm: '21:55:00', tz: '+03:00' }),
		'260762900312550021');
	assert.deepStrictEqual(c.decode('260762900312550021'),
		{ dt: '2026-09-30', tm: '21:55:00', tz: '+03:00' });
	// negative zones carry the sign bit 0x08: -2:30 = 10 quarters -> 0x09
	assert.strictEqual(c.encode({ dt: '2026-01-05', tm: '08:07:09', tz: '-02:30' }),
		'260762105080709009');
	assert.deepStrictEqual(c.decode('260762105080709009'),
		{ dt: '2026-01-05', tm: '08:07:09', tz: '-02:30' });
	// 'FF' time zone = unknown (TS 123 040 9.2.3.11), never a bogus offset
	assert.strictEqual(c.decode('2607629003125500FF').tz, 'unknown');
	// a truncated value still returns null instead of throwing
	assert.strictEqual(c.decode('2607123'), null);
});

test('the PLI codec tags follow TS 101 220 Table 7.23, base (CR=0) form', () => {
	// the TR's response objects are Min = N, so TS 102 223 6.8.0 says they
	// "should set the CR flag to comprehension not required" (v3.25.2):
	// the base tag values (13/14/2D/2E/3F/62/65/63/26), not the CR-set forms
	assert.strictEqual(PLI_CODECS['00'].tlv, '1305');
	assert.strictEqual(PLI_CODECS['01'].tlv, '1408');
	assert.strictEqual(PLI_CODECS['01'].encode({ imei: '490154203237518' }), '140894104502237315f8');
	assert.strictEqual(PLI_CODECS['04'].tlv, '2D02');
	assert.strictEqual(PLI_CODECS['06'].tlv, '3F01');
	// 05 Timing Advance: 2E (C6 is a 3GPP2 tag)
	assert.strictEqual(PLI_CODECS['05'].tlv, '2E02');
	assert.strictEqual(PLI_CODECS['05'].encode({ status: '0', ta: '0' }), '2E020000');
	// 08 IMEISV: 62 (94 is the IMEI tag)
	assert.strictEqual(PLI_CODECS['08'].tlv, '6208');
	assert.strictEqual(PLI_CODECS['08'].encode({ imeisv: '4901542032375108' }),
		'62089410450223731580');
	// 09 Network search mode: 65, '00' Manual / '01' Automatic (8.75)
	assert.strictEqual(PLI_CODECS['09'].tlv, '6501');
	assert.strictEqual(PLI_CODECS['09'].fields[0].opts[0].l, 'Manual');
	assert.strictEqual(PLI_CODECS['09'].fields[0].opts[1].l, 'Automatic');
	// 0A Battery state: 63/E3 is an enum, not a percentage (8.76)
	assert.strictEqual(PLI_CODECS['0A'].tlv, '6301');
	assert.strictEqual(PLI_CODECS['0A'].encode({ charge: '4' }), '630104');
	assert.strictEqual(PLI_CODECS['0A'].encode({ charge: '0' }), '630100');
	assert.strictEqual(PLI_CODECS['0E'].tlv, '3F');
});

test('the IMEI encoder pads the odd 15th digit with F (TS 124 008)', () => {
	// the encoder's digits are lowercase (the server accepts either case)
	assert.strictEqual(encImeiPli('490154203237518'), '94104502237315f8');
	assert.strictEqual(decImei('94104502237315F8'), '490154203237518');
});

test('the server PLI defaults decode through their codecs', () => {
	// mirrors PLI_DEFAULTS in server.py (v3.23.1; a drift guard for the codecs)
	const defaults = {
		'00': '130500F1100000', '01': '140894104502237315F8',
		'04': '2D02656E', '05': '2E020000', '06': '3F0108',
		'08': '62089410450223731580', '09': '650101',
		'0A': '630104', '0E': '3F020308',
	};
	for (const [code, hex] of Object.entries(defaults)) {
		assert.ok(PLI_CODECS[code].decode(hex), code + ' must decode');
	}
	assert.strictEqual(PLI_CODECS['01'].decode('140894104502237315F8').imei,
		'490154203237518');
	assert.deepStrictEqual(PLI_CODECS['09'].decode('650101'), { mode: '1' });
	assert.deepStrictEqual(PLI_CODECS['0A'].decode('630104'), { charge: '4' });
});

// the same extraction the profiler tests use
function extractFunc(src, name) {
	const re = new RegExp('function\\s+' + name + '\\s*\\([^)]*\\)\\s*\\{');
	const m = re.exec(src);
	if (!m) throw new Error('function ' + name + ' not found');
	let i = m.index + m[0].length - 1;
	let depth = 0;
	for (; i < src.length; i++) {
		if (src[i] === '{') depth++;
		else if (src[i] === '}') {
			depth--;
			if (depth === 0) break;
		}
	}
	return src.slice(m.index, i + 1);
}

test('a rejected PLI save is reported, not silently dropped', () => {
	// the server names the fields it could not use (invalid/unknown) and the
	// PWA shows them under the Save button (v3.25.6)
	global.t = s => s;
	eval(extractFunc(html, 'pysimPliRejectMsg'));
	assert.strictEqual(pysimPliRejectMsg({}), '');
	assert.strictEqual(pysimPliRejectMsg({ '0A': '630104' }), '');
	assert.strictEqual(pysimPliRejectMsg({ invalid: ['0A'] }),
		'Not saved: 0A (invalid value)');
	assert.strictEqual(pysimPliRejectMsg({ unknown: ['18'] }),
		'Not saved: 18 (unknown qualifier)');
	assert.strictEqual(pysimPliRejectMsg({ invalid: ['0A'], unknown: ['18'] }),
		'Not saved: 0A (invalid value), 18 (unknown qualifier)');
	// the save posts every field (no silent client-side skip) and wires the
	// message element + the reject branch
	assert.ok(html.includes('if (el) data[q.code] = el.value.trim()'),
		'every field is sent to the server for validation');
	assert.ok(html.includes('id="pli-save-msg"'), 'the message element exists');
	assert.ok(html.includes('const reject = pysimPliRejectMsg(resp);'),
		'the save reports the rejection');
	delete global.t;
});