using Bff.Api;

namespace Bff.Tests;

public class OpenbaarProjectionTests
{
    private static readonly ProjectionEntry[] Sample =
    [
        new("abc-111", "INGEDIEND", Reference: "REG-A", Bsn: "123456782", NaamPlaceholder: "Jan"),
        new("def-222", "INGESCHREVEN", Reference: "REG-B", Bsn: "987654321", NaamPlaceholder: "Piet"),
    ];

    [Fact]
    public void Maps_every_row_to_public_safe_fields_when_no_query()
    {
        var view = OpenbaarProjection.PublicView(Sample, null);

        Assert.Equal(2, view.Count);
        Assert.Equal("abc-111", view[0].Id);
        Assert.Equal("INGEDIEND", view[0].Status);
        // The public reference (zaak identificatie) is surfaced so it matches the submit confirmation (#78).
        Assert.Equal("REG-A", view[0].Reference);
    }

    [Fact]
    public void Public_view_exposes_only_id_status_and_reference()
    {
        // OpenbaarEntry structurally carries only public-safe fields — bsn/naam can never leak.
        var props = typeof(OpenbaarEntry).GetProperties().Select(p => p.Name).ToArray();
        Assert.Equal(["Id", "Status", "Reference"], props);
    }

    [Theory]
    [InlineData("abc", 1)]   // by id
    [InlineData("ABC", 1)]   // by id, case-insensitive
    [InlineData("def", 1)]   // by id
    [InlineData("zzz", 0)]   // no match
    public void Filters_by_id_containing_the_query_case_insensitively(string q, int expected)
        => Assert.Equal(expected, OpenbaarProjection.PublicView(Sample, q).Count);

    [Theory]
    [InlineData("REG-A", 1)] // by reference — the citizen's confirmation reference
    [InlineData("reg-a", 1)] // by reference, case-insensitive
    [InlineData("REG", 2)]   // both share the prefix
    public void Filters_by_reference_containing_the_query_case_insensitively(string q, int expected)
        => Assert.Equal(expected, OpenbaarProjection.PublicView(Sample, q).Count);

    [Fact]
    public void Blank_query_is_treated_as_no_filter()
    {
        Assert.Equal(2, OpenbaarProjection.PublicView(Sample, "   ").Count);
    }

    [Fact]
    public void A_row_without_a_reference_never_matches_a_query()
    {
        // Older rows can have a null reference (the column is additive, #78/ADR-0012). A search must
        // simply not match them — it must not throw and must not treat "no reference" as a match.
        var entries = new[] { new ProjectionEntry("xyz-999", "INGEDIEND", Reference: null, Bsn: null, NaamPlaceholder: null) };

        Assert.Empty(OpenbaarProjection.PublicView(entries, "REG"));
        Assert.Equal("xyz-999", Assert.Single(OpenbaarProjection.PublicView(entries, "xyz")).Id);
    }
}