// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

package attribute

import (
	"reflect"
	"testing"
)

var wrapFloat64SliceValue = func(v interface{}) interface{} {
	if vi, ok := v.([]float64); ok {
		return Float64SliceValue(vi)
	}
	return nil
}

var wrapInt64SliceValue = func(v interface{}) interface{} {
	if vi, ok := v.([]int64); ok {
		return Int64SliceValue(vi)
	}
	return nil
}

var wrapBoolSliceValue = func(v interface{}) interface{} {
	if vi, ok := v.([]bool); ok {
		return BoolSliceValue(vi)
	}
	return nil
}

var wrapStringSliceValue = func(v interface{}) interface{} {
	if vi, ok := v.([]string); ok {
		return StringSliceValue(vi)
	}
	return nil
}

var (
	wrapAsBoolSlice    = func(v interface{}) interface{} { return AsBoolSlice(v) }
	wrapAsInt64Slice   = func(v interface{}) interface{} { return AsInt64Slice(v) }
	wrapAsFloat64Slice = func(v interface{}) interface{} { return AsFloat64Slice(v) }
	wrapAsStringSlice  = func(v interface{}) interface{} { return AsStringSlice(v) }
)

func TestSliceValue(t *testing.T) {
	type args struct {
		v interface{}
	}
	tests := []struct {
		name string
		args args
		want interface{}
		fn   func(interface{}) interface{}
	}{
		{
			name: "Float64SliceValue() two items",
			args: args{v: []float64{1, 2.3}}, want: [2]float64{1, 2.3}, fn: wrapFloat64SliceValue,
		},
		{
			name: "Int64SliceValue() two items",
			args: args{[]int64{1, 2}}, want: [2]int64{1, 2}, fn: wrapInt64SliceValue,
		},
		{
			name: "BoolSliceValue() two items",
			args: args{v: []bool{true, false}}, want: [2]bool{true, false}, fn: wrapBoolSliceValue,
		},
		{
			name: "StringSliceValue() two items",
			args: args{[]string{"123", "2"}}, want: [2]string{"123", "2"}, fn: wrapStringSliceValue,
		},
		{
			name: "AsBoolSlice() two items",
			args: args{[2]bool{true, false}}, want: []bool{true, false}, fn: wrapAsBoolSlice,
		},
		{
			name: "AsInt64Slice() two items",
			args: args{[2]int64{1, 3}}, want: []int64{1, 3}, fn: wrapAsInt64Slice,
		},
		{
			name: "AsFloat64Slice() two items",
			args: args{[2]float64{1.2, 3.1}}, want: []float64{1.2, 3.1}, fn: wrapAsFloat64Slice,
		},
		{
			name: "AsStringSlice() two items",
			args: args{[2]string{"1234", "12"}}, want: []string{"1234", "12"}, fn: wrapAsStringSlice,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := tt.fn(tt.args.v); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("got %v, want %v", got, tt.want)
			}
		})
	}
}

// sync is a global used to ensure the benchmark are not optimized away.
var sync any

func BenchmarkBoolSliceValue(b *testing.B) {
	b.ReportAllocs()
	s := []bool{true, false, true, false}
	b.ResetTimer()
	for n := 0; n < b.N; n++ {
		sync = BoolSliceValue(s)
	}
}

func BenchmarkInt64SliceValue(b *testing.B) {
	b.ReportAllocs()
	s := []int64{1, 2, 3, 4}
	b.ResetTimer()
	for n := 0; n < b.N; n++ {
		sync = Int64SliceValue(s)
	}
}

func BenchmarkFloat64SliceValue(b *testing.B) {
	b.ReportAllocs()
	s := []float64{1.2, 3.4, 5.6, 7.8}
	b.ResetTimer()
	for n := 0; n < b.N; n++ {
		sync = Float64SliceValue(s)
	}
}

func BenchmarkStringSliceValue(b *testing.B) {
	b.ReportAllocs()
	s := []string{"a", "b", "c", "d"}
	b.ResetTimer()
	for n := 0; n < b.N; n++ {
		sync = StringSliceValue(s)
	}
}

func BenchmarkAsFloat64Slice(b *testing.B) {
	b.ReportAllocs()
	var in interface{} = [2]float64{1, 2.3}
	b.ResetTimer()

	for i := 0; i < b.N; i++ {
		sync = AsFloat64Slice(in)
	}
}
