using GeradoresService;
using GeradoresService.Core;

namespace UnitTest;

/// <summary>
/// Para cada gerador e cada valor de cada opção, os valores gerados têm de passar no próprio validador.
/// </summary>
public class GeneratorRoundTripTests
{
    private static readonly GeneratorRegistry Registry = new();

    public static TheoryData<string, string, string> AllOptionValues()
    {
        var data = new TheoryData<string, string, string>();
        foreach (var g in Registry.All)
        {
            if (g.Options.Count == 0)
                data.Add(g.Id, "", "");
            foreach (var o in g.Options)
                foreach (var c in o.Choices)
                    data.Add(g.Id, o.Key, c.Value);
        }
        return data;
    }

    [Theory]
    [MemberData(nameof(AllOptionValues))]
    public void Generated_values_are_valid(string generatorId, string optionKey, string optionValue)
    {
        var generator = Registry.Find(generatorId)!;
        var options = new Dictionary<string, string?>();
        if (optionKey != "")
            options[optionKey] = optionValue;

        var items = Registry.Generate(generator, 300, options, seed: 42);

        Assert.All(items, item => Assert.False(string.IsNullOrWhiteSpace(item.Value)));
        if (!generator.CanValidate)
            return;

        foreach (var item in items)
        {
            var result = generator.Validate(item.Value);
            Assert.True(result.IsValid, $"{generatorId} gerou '{item.Value}' que não valida: {result.Message}");
        }
    }

    [Fact]
    public void Pessoa_fields_are_all_valid()
    {
        var pessoa = Registry.Find("pessoa")!;
        foreach (var item in Registry.Generate(pessoa, 200, new Dictionary<string, string?>(), seed: 7))
        {
            var f = item.Fields!;
            Assert.True(Registry.Find("nif")!.Validate(f["NIF"]).IsValid);
            Assert.True(Registry.Find("niss")!.Validate(f["NISS"]).IsValid);
            Assert.True(Registry.Find("cc")!.Validate(f["Cartão de Cidadão"]).IsValid);
            Assert.True(Registry.Find("iban")!.Validate(f["IBAN"]).IsValid);
            Assert.True(Registry.Find("telefone")!.Validate(f["Telemóvel"]).IsValid);
            Assert.True(Registry.Find("email")!.Validate(f["Email"]).IsValid);
            Assert.True(Registry.Find("codigo-postal")!.Validate(f["Código postal"]).IsValid);

            var age = DateTime.UtcNow.Year - DateOnly.Parse(f["Data de nascimento"]).Year;
            Assert.InRange(age, 18, 81);
        }
    }

    [Fact]
    public void Same_seed_gives_same_values()
    {
        var nif = Registry.Find("nif")!;
        var a = Registry.Generate(nif, 20, new Dictionary<string, string?>(), seed: 123);
        var b = Registry.Generate(nif, 20, new Dictionary<string, string?>(), seed: 123);
        Assert.Equal(a.Select(x => x.Value), b.Select(x => x.Value));
    }

    [Fact]
    public void Generated_values_are_not_all_equal()
    {
        var items = Registry.Generate(Registry.Find("nif")!, 50, new Dictionary<string, string?>());
        Assert.True(items.Select(i => i.Value).Distinct().Count() > 40);
    }

    [Fact]
    public void Invalid_option_value_throws()
    {
        var nif = Registry.Find("nif")!;
        Assert.Throws<ArgumentException>(() =>
            Registry.Generate(nif, 1, new Dictionary<string, string?> { ["tipo"] = "4" }));
    }

    [Theory]
    [InlineData(0)]
    [InlineData(GeneratorRegistry.MaxBatch + 1)]
    public void Count_out_of_range_throws(int count)
    {
        Assert.Throws<ArgumentOutOfRangeException>(() =>
            Registry.Generate(Registry.Find("nif")!, count, new Dictionary<string, string?>()));
    }

    [Fact]
    public void Ids_are_unique()
    {
        Assert.Equal(Registry.All.Count, Registry.All.Select(g => g.Id).Distinct().Count());
    }
}