using Admin.NET.Plugin.AiDOP.Supply;
using Xunit;

namespace Admin.NET.Plugin.AiDOP.Tests.S3.Supply;

public class NumberRuleFormatterTests
{
    [Theory]
    [InlineData("YYYYMMDD", "20260510")]
    [InlineData("YYMMDD", "260510")]
    [InlineData("YYYYMM", "202605")]
    [InlineData("YYMM", "2605")]
    [InlineData("YYYY", "2026")]
    [InlineData("MMDD", "0510")]
    public void FormatDatePart_WhenKnownPattern_ReturnsExpected(string dateType, string expected)
    {
        var now = new DateTime(2026, 5, 10);

        Assert.Equal(expected, NumberRuleFormatter.FormatDatePart(dateType, now));
    }

    [Fact]
    public void ResolveSerialWidth_WhenMaxValue9999_ReturnsFour()
    {
        Assert.Equal(4, NumberRuleFormatter.ResolveSerialWidth(9999));
    }

    [Fact]
    public void ResolveSerialWidth_WhenMaxValueMissing_DefaultsToFour()
    {
        Assert.Equal(4, NumberRuleFormatter.ResolveSerialWidth(null));
    }

    [Fact]
    public void BuildNumber_WhenPwDailyRule_ReturnsExpectedNumber()
    {
        var now = new DateTime(2026, 5, 10);

        var number = NumberRuleFormatter.BuildNumber("P", "W", null, "YYYYMMDD", true, 1, 9999, now);

        Assert.Equal("PW202605100001", number);
    }

    [Fact]
    public void BuildNumber_WhenM8DailyRule_ReturnsExpectedNumber()
    {
        var now = new DateTime(2026, 5, 10);

        var number = NumberRuleFormatter.BuildNumber("D", null, null, "YYYYMMDD", true, 1, 99999, now);

        Assert.Equal("D2026051000001", number);
    }

    [Theory]
    [InlineData("YYYYMMDD", "2026-05-10")]
    [InlineData("YYYYMM", "2026-05-01")]
    [InlineData("YYYY", "2026-01-01")]
    public void ResolveSequenceDate_WhenDateRule_ReturnsExpectedBucket(string dateType, string expected)
    {
        var now = new DateTime(2026, 5, 10, 14, 30, 0);

        var sequenceDate = NumberRuleFormatter.ResolveSequenceDate(dateType, true, now);

        Assert.Equal(DateTime.Parse(expected), sequenceDate);
    }

    [Fact]
    public void ResolveSequenceDate_WhenNoDateRule_ReturnsNull()
    {
        var now = new DateTime(2026, 5, 10);

        var sequenceDate = NumberRuleFormatter.ResolveSequenceDate(null, false, now);

        Assert.Null(sequenceDate);
    }

    [Fact]
    public void BuildNumber_WhenNoDateType_ReturnsPrefixAndSerial()
    {
        var now = new DateTime(2026, 5, 10);

        var number = NumberRuleFormatter.BuildNumber("J", "H", "D", null, false, 12, 999, now);

        Assert.Equal("JHD012", number);
    }
}