using AsbCloudApp.Validation;
using System;
using Xunit;

namespace AsbCloudWebApi.Tests.AttributeTest
{
    public class DateValidationAttributeTest
    {
        [Fact]
        public void AllowNull_true_on_null_valid()
        {
            var attribute = new DateValidationAttribute { AllowNull = true };
            var result = attribute.IsValid(null);
            Assert.True(result);
        }

        [Fact]
        public void AllowNull_false_on_null_invalid()
        {
            var attribute = new DateValidationAttribute { AllowNull = false };
            var result = attribute.IsValid(null);
            Assert.False(result);
        }

        [Fact]
        public void IsDateOnly_true_on_empty_timePart_valid()
        {
            var attribute = new DateValidationAttribute { IsDateOnly = true };
            var date = new DateTime(2023, 01, 01, 00, 00, 00);
            var result = attribute.IsValid(date);
            Assert.True(result);
        }

        [Fact]
        public void IsDateOnly_true_on_timePart_invalid()
        {
            var attribute = new DateValidationAttribute { IsDateOnly = true };
            var date = new DateTime(2023, 01, 01, 01, 01, 01);
            var result = attribute.IsValid(date);
            Assert.False(result);
        }

        [Fact]
        public void IsDateOnly_true_on_utc_invalid()
        {
            var attribute = new DateValidationAttribute { IsDateOnly = true };
            var date = new DateTime(2023, 01, 01, 00, 00, 00, DateTimeKind.Utc);
            var result = attribute.IsValid(date);
            Assert.False(result);
        }

        [Fact]
        public void AllowUtc_true_on_unspecified_valid()
        {
            var attribute = new DateValidationAttribute { AllowUtc = true };
            var date = new DateTime(2023, 01, 01, 00, 00, 00, DateTimeKind.Unspecified);
            var result = attribute.IsValid(date);
            Assert.True(result);
        }

        [Fact]
        public void AllowUtc_true_on_utc_valid()
        {
            var attribute = new DateValidationAttribute { AllowUtc = true };
            var date = new DateTime(2023, 01, 01, 00, 00, 00, DateTimeKind.Utc);
            var result = attribute.IsValid(date);
            Assert.True(result);
        }

        [Fact]
        public void AllowUtc_false_on_utc_invalid()
        {
            var attribute = new DateValidationAttribute { AllowUtc = false };
            var date = new DateTime(2023, 01, 01, 00, 00, 00, DateTimeKind.Utc);
            var result = attribute.IsValid(date);
            Assert.False(result);
        }

        [Fact]
        public void AllowUtc_false_on_unspecified_valid()
        {
            var attribute = new DateValidationAttribute { AllowUtc = false };
            var date = new DateTime(2023, 01, 01, 00, 00, 00, DateTimeKind.Unspecified);
            var result = attribute.IsValid(date);
            Assert.True(result);
        }

        [Fact]
        public void GtDate_on_same_date_invalid()
        {
            var gtDate = "2023-01-01T00:00:00";
            var date = DateTime.Parse(gtDate);
            var attribute = new DateValidationAttribute { GtDate = gtDate };            
            var result = attribute.IsValid(date);
            Assert.False(result);
        }

        [Fact]
        public void GtDate_on_greater_date_valid()
        {
            var gtDate = "2023-01-01T00:00:00";
            var date = DateTime.Parse(gtDate).AddMilliseconds(1);
            var attribute = new DateValidationAttribute { GtDate = gtDate };
            var result = attribute.IsValid(date);
            Assert.True(result);
        }
    }
}