// Copyright ©2025 blackshirt.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
//
import arrays
import encoding.hex
import x.crypto.ascon

// This test for Xof128 with 512-bits outputs
struct XofTest {
	count int
	msg   string
	md    string
}

fn test_xof128() ! {
	for item in xof128_test_data {
		msg := hex.decode(item.msg)!
		md := hex.decode(item.md)!
		out := ascon.xof128_64(msg)!
		assert out == md

		// With Xof128Digest opaque
		mut x := ascon.new_xof128(ascon.default_xof_size)
		md0 := x.sum(msg)
		assert md0 == md

		// test .read()
		x.reset()
		mut dst := []u8{len: 64}
		_ := x.write(msg)!
		nr := x.read(mut dst)!
		assert nr == 64
		assert dst == md

		// with chunked messages
		x.reset()
		chunks := arrays.chunk[u8](msg, 20)
		mut tot := 0
		for chunk in chunks {
			n := x.write(chunk)!
			tot += n
		}
		assert msg.len == tot

		chunked_md := x.sum([]u8{})
		assert chunked_md == md
	}
}

const xof128_test_data = [
	XofTest{
		count: 1
		msg:   ''
		md:    '473d5e6164f58b39dfd84aacdb8ae42ec2d91fed33388ee0d960d9b3993295c6ad77855a5d3b13fe6ad9e6098988373af7d0956d05a8f1665d2c67d1a3ad10ff'
	},
	XofTest{
		count: 2
		msg:   '00'
		md:    '51430e0438ecdf642b393630d977625f5f337656ba58ab1e960784ac32a16e0d446405551f5469384f8ea283cf12e64fa72c426bfebaea3aa1529e2c4ab23a2f'
	},
	XofTest{
		count: 3
		msg:   '0001'
		md:    'a05383077af971d3830bd37e7b981497a773d441db077c6494cc73125953846eb6427fba4cd308ff90a11385d51101341bf5379249217bfdace9cca1148cc966'
	},
	XofTest{
		count: 4
		msg:   '000102'
		md:    '9c96f31c3e7bdfdc5ef6ba836f760a0d6548d94dd0a512033022c9242e8ba916c30c3961d37d7dd7282e2191494d60dc5058588b276c60c90be2aaa7e7013d96'
	},
	XofTest{
		count: 5
		msg:   '00010203'
		md:    '21f7fd74588e244af45f9016b8db19b857ec5e6208978cfc1b4611ed91fb38f87e8f82a6409fb2b77acfbba8862aa22a7b0c98c1c01d5a4fdf64827b450fa1eb'
	},
	XofTest{
		count: 6
		msg:   '0001020304'
		md:    'd647cc91aafff06a486f00a33fdfe9222f08b94da3b17804da9aaae167b4285dd6395e2a61fded3cf73c99774aff7066f74f7698f4824ba538602087d7c267fa'
	},
	XofTest{
		count: 7
		msg:   '000102030405'
		md:    '4793fbe6aa7688e52cd3a97a2685c68b218e0ca8754307956509974ab107d8ba19070424d5dfd336c3fc1250a273b9146f9f26d7658b9e213c37aebbe74abc6e'
	},
	XofTest{
		count: 8
		msg:   '00010203040506'
		md:    '7ae562db37212a9acd2673ecfd5b4f1c5cb2e6f64ebf00aa7f6ef8dc82c448d5fe11cd91f4368c37690d79e5de0ca8ad419e1918ce8dab2d42363e9476638a7b'
	},
	XofTest{
		count: 9
		msg:   '0001020304050607'
		md:    '8d1886f5d3ec4af8d15b44bc62b74da6ea91bc28fb82f9c34079b5ed6e38b6c951803d7dfb3c5e512a0ef5e4060062a6fd067f9c73ef9bee527411bda67fc896'
	},
	XofTest{
		count: 10
		msg:   '000102030405060708'
		md:    'db3013bfbbd132dc1d3152fd955ed48f7cbb675e9ad2a2fecf92b74c957592e0c89959e81c16fd07ead9eeb8e40359c497aa20258b43d87ec69ad0bb0993fd38'
	},
	XofTest{
		count: 601
		msg:   '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'
		md:    '8fbbce48a72faf257e06df9408d4b6e11d35a86dfc29c0f106cb86128a2fe94208dcc8df4a439978cdb77f53317cbe5507b7f33da590be10a424d4ef60b37036'
	},
	XofTest{
		count: 602
		msg:   '000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f404142434445464748494a4b4c4d4e4f505152535455565758595a5b5c5d5e5f606162636465666768696a6b6c6d6e6f707172737475767778797a7b7c7d7e7f808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9fa0a1a2a3a4a5a6a7a8a9aaabacadaeafb0b1b2b3b4b5b6b7b8b9babbbcbdbebfc0c1c2c3c4c5c6c7c8c9cacbcccdcecfd0d1d2d3d4d5d6d7d8d9dadbdcdddedfe0e1e2e3e4e5e6e7e8e9eaebecedeeeff0f1f2f3f4f5f6f7f8f9fafbfcfdfeff000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f404142434445464748494a4b4c4d4e4f505152535455565758595a5b5c5d5e5f606162636465666768696a6b6c6d6e6f707172737475767778797a7b7c7d7e7f808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9fa0a1a2a3a4a5a6a7a8a9aaabacadaeafb0b1b2b3b4b5b6b7b8b9babbbcbdbebfc0c1c2c3c4c5c6c7c8c9cacbcccdcecfd0d1d2d3d4d5d6d7d8d9dadbdcdddedfe0e1e2e3e4e5e6e7e8e9eaebecedeeeff0f1f2f3f4f5f6f7f8f9fafbfcfdfeff000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f404142434445464748494a4b4c4d4e4f505152535455565758'
		md:    'b4ca30047dc94ed770e45f4fa07b25a049d4a149a78227e25625cec2cbee7cfdd7d3cfb2635a38770e04009de348726364f648984ef47e9bc90c2a3c0526b227'
	},
]