package externalapi

import (
	"reflect"
	"testing"
)

func TestDomainBlockHeader_Equal(t *testing.T) {
	type headerToCompare struct {
		header         *DomainBlockHeader
		expectedResult bool
	}
	tests := []struct {
		baseHeader         *DomainBlockHeader
		headersToCompareTo []headerToCompare
	}{
		{
			baseHeader: nil,
			headersToCompareTo: []headerToCompare{
				{
					header:         nil,
					expectedResult: true,
				},
				{
					header: &DomainBlockHeader{
						0,
						[]*DomainHash{NewDomainHashFromByteArray(&[DomainHashSize]byte{0})},
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{1}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{2}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{3}),
						4,
						5,
						6,
					},
					expectedResult: false,
				},
			},
		},
		{
			baseHeader: &DomainBlockHeader{
				0,
				[]*DomainHash{NewDomainHashFromByteArray(&[DomainHashSize]byte{1})},
				*NewDomainHashFromByteArray(&[DomainHashSize]byte{2}),
				*NewDomainHashFromByteArray(&[DomainHashSize]byte{3}),
				*NewDomainHashFromByteArray(&[DomainHashSize]byte{4}),
				5,
				6,
				7,
			},
			headersToCompareTo: []headerToCompare{
				{
					header:         nil,
					expectedResult: false,
				},
				{
					header: &DomainBlockHeader{
						0,
						[]*DomainHash{NewDomainHashFromByteArray(&[DomainHashSize]byte{1})},
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{2}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{3}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{4}),
						5,
						6,
						7,
					},
					expectedResult: true,
				},
				{
					header: &DomainBlockHeader{
						100,
						[]*DomainHash{NewDomainHashFromByteArray(&[DomainHashSize]byte{1})},
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{2}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{3}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{4}),
						5,
						6,
						7,
					},
					expectedResult: false,
				},
				{
					header: &DomainBlockHeader{
						0,
						// []*DomainHash{{1}, {2}},
						[]*DomainHash{
							NewDomainHashFromByteArray(&[DomainHashSize]byte{1}),
							NewDomainHashFromByteArray(&[DomainHashSize]byte{2})},
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{2}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{3}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{4}),
						5,
						6,
						7,
					},
					expectedResult: false,
				},
				{
					header: &DomainBlockHeader{
						0,
						[]*DomainHash{NewDomainHashFromByteArray(&[DomainHashSize]byte{100})},
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{2}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{3}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{4}),
						5,
						6,
						7,
					},
					expectedResult: false,
				},
				{
					header: &DomainBlockHeader{
						0,
						[]*DomainHash{NewDomainHashFromByteArray(&[DomainHashSize]byte{1})},
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{100}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{3}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{4}),
						5,
						6,
						7,
					},
					expectedResult: false,
				},
				{
					header: &DomainBlockHeader{
						0,
						[]*DomainHash{NewDomainHashFromByteArray(&[DomainHashSize]byte{1})},
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{2}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{100}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{4}),
						5,
						6,
						7,
					},
					expectedResult: false,
				},
				{
					header: &DomainBlockHeader{
						0,
						[]*DomainHash{NewDomainHashFromByteArray(&[DomainHashSize]byte{1})},
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{2}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{3}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{100}),
						5,
						6,
						7,
					},
					expectedResult: false,
				},
				{
					header: &DomainBlockHeader{
						0,
						[]*DomainHash{NewDomainHashFromByteArray(&[DomainHashSize]byte{1})},
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{2}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{3}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{4}),
						100,
						6,
						7,
					},
					expectedResult: false,
				},
				{
					header: &DomainBlockHeader{
						0,
						[]*DomainHash{NewDomainHashFromByteArray(&[DomainHashSize]byte{1})},
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{2}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{3}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{4}),
						5,
						100,
						7,
					},
					expectedResult: false,
				},
				{
					header: &DomainBlockHeader{
						0,
						[]*DomainHash{NewDomainHashFromByteArray(&[DomainHashSize]byte{1})},
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{2}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{3}),
						*NewDomainHashFromByteArray(&[DomainHashSize]byte{4}),
						5,
						6,
						100,
					},
					expectedResult: false,
				},
			},
		},
	}

	for i, test := range tests {
		for j, subTest := range test.headersToCompareTo {
			result1 := test.baseHeader.Equal(subTest.header)
			if result1 != subTest.expectedResult {
				t.Fatalf("Test #%d:%d: Expected %t but got %t", i, j, subTest.expectedResult, result1)
			}

			result2 := subTest.header.Equal(test.baseHeader)
			if result2 != subTest.expectedResult {
				t.Fatalf("Test #%d:%d: Expected %t but got %t", i, j, subTest.expectedResult, result2)
			}
		}
	}
}

func TestDomainBlockHeader_Clone(t *testing.T) {
	headers := []*DomainBlockHeader{
		{
			0,
			[]*DomainHash{NewDomainHashFromByteArray(&[DomainHashSize]byte{0})},
			*NewDomainHashFromByteArray(&[DomainHashSize]byte{1}),
			*NewDomainHashFromByteArray(&[DomainHashSize]byte{2}),
			*NewDomainHashFromByteArray(&[DomainHashSize]byte{3}),
			4,
			5,
			6,
		},
		{
			0,
			[]*DomainHash{},
			*NewDomainHashFromByteArray(&[DomainHashSize]byte{1}),
			*NewDomainHashFromByteArray(&[DomainHashSize]byte{2}),
			*NewDomainHashFromByteArray(&[DomainHashSize]byte{3}),
			4,
			5,
			6,
		},
	}

	for i, header := range headers {
		clone := header.Clone()
		if !clone.Equal(header) {
			t.Fatalf("Test #%d: clone should be equal to the original", i)
		}

		if !reflect.DeepEqual(header, clone) {
			t.Fatalf("Test #%d: clone should be equal to the original", i)
		}
	}
}