package validator_test

import (
	"fmt"
	"math"
	"reflect"
	"testing"

	"github.com/xdrm-io/aicra/validator"
)

func TestUint_ReflectType(t *testing.T) {
	t.Parallel()

	var (
		dt       = validator.UintType{}
		expected = reflect.TypeOf(uint(0))
	)
	if dt.GoType() != expected {
		t.Fatalf("invalid GoType() %v ; expected %v", dt.GoType(), expected)
	}
}

func TestUint_AvailableTypes(t *testing.T) {
	t.Parallel()

	dt := validator.UintType{}

	tests := []struct {
		Type    string
		Handled bool
	}{
		{"uint", true},
		{"Uint", false},
		{"UINT", false},
		{" uint", false},
		{"uint ", false},
		{" uint ", false},
	}

	for _, test := range tests {
		t.Run(test.Type, func(t *testing.T) {
			validator := dt.Validator(test.Type)
			if validator == nil {
				if test.Handled {
					t.Errorf("expect %q to be handled", test.Type)
					t.Fail()
				}
				return
			}

			if !test.Handled {
				t.Errorf("expect %q NOT to be handled", test.Type)
				t.Fail()
			}
		})
	}

}

func TestUint_Values(t *testing.T) {
	t.Parallel()

	const typeName = "uint"

	validator := validator.UintType{}.Validator(typeName)
	if validator == nil {
		t.Errorf("expect %q to be handled", typeName)
		t.Fail()
	}

	tests := []struct {
		Value interface{}
		Valid bool
	}{
		{uint(0), true},
		{uint(math.MaxInt64), true},
		{uint(math.MaxUint64), true},
		{-1, false},
		{-math.MaxInt64, false},

		{float64(math.MinInt64), false},
		{float64(0), true},
		{float64(math.MaxInt64), true},
		// we cannot just compare because of how precision works
		{float64(math.MaxUint64 - 1024), true},
		{float64(math.MaxUint64 + 1), false},

		// json number
		{fmt.Sprintf("%d", math.MinInt64), false},
		{"-1", false},
		{"0", true},
		{"1", true},
		{fmt.Sprintf("%d", math.MaxInt64), true},
		{fmt.Sprintf("%d", uint(math.MaxUint64)), true},
		// strane offset because of how precision works
		{fmt.Sprintf("%f", float64(math.MaxUint64+1024*3)), false},

		{[]byte(fmt.Sprintf("%d", math.MaxInt64)), true},
		{[]byte(fmt.Sprintf("%d", uint(math.MaxUint64))), true},
		// strane offset because of how precision works
		{[]byte(fmt.Sprintf("%f", float64(math.MaxUint64+1024*3))), false},

		{"string", false},
		{[]byte("bytes"), false},
		{-0.1, false},
		{0.1, false},
		{nil, false},
	}

	for i, test := range tests {
		t.Run(fmt.Sprintf("%d", i), func(t *testing.T) {
			if _, isValid := validator(test.Value); isValid {
				if !test.Valid {
					t.Errorf("expect value to be invalid")
					t.Fail()
				}
				return
			}
			if test.Valid {
				t.Errorf("expect value to be valid")
				t.Fail()
			}
		})
	}

}