using Fleet.Core;
using Fleet.Hosting;

namespace Fleet.Tests;

public sealed class BufferedNodeLogTests
{
    [Fact]
    public void Summary_CountsByLevelAndTypeWithoutText_AndResetsAfterEachTake()
    {
        var log = new BufferedNodeLog(NullNodeLog.Instance, TimeProvider.System);
        for (int i = 0; i < 5; i++)
        {
            log.Warn("peer control handshake failed", ("attempt", i));
        }

        log.Info("link up");
        log.Error("MsQuic QUIC transport shutdown");

        NodeLogSummary first = log.TakeSummary();
        Assert.Equal((1L, 5L, 1L), (first.Info, first.Warn, first.Error));
        Assert.Equal(7, first.LastId);
        NodeLogTypeCount top = first.Types[0];
        Assert.Equal((BufferedNodeLog.TypeOf("peer control handshake failed"), "warn", 5L), (top.Type, top.Level, top.Count));

        NodeLogSummary second = log.TakeSummary();
        Assert.Equal((0L, 0L, 0L), (second.Info, second.Warn, second.Error));
        Assert.Empty(second.Types);
        Assert.Equal(7, second.LastId);
    }

    [Fact]
    public void Read_ReturnsLinesAfterAnIdAtOrAboveALevel_OldestFirst_AndTheRingKeepsTheNewest()
    {
        var log = new BufferedNodeLog(NullNodeLog.Instance, TimeProvider.System);
        log.Info("one");
        log.Warn("two");
        log.Error("three");
        log.Info("four");

        Assert.Equal(["two", "three"], log.Read(1, 2, null).Items.Select(e => e.Record.Message));
        Assert.Equal(["three"], log.Read(0, 10, "error").Items.Select(e => e.Record.Message));
        Assert.Equal(["two", "three"], log.Read(0, 10, "warn").Items.Select(e => e.Record.Message));

        for (int i = 0; i < 3000; i++)
        {
            log.Info("filler", ("n", i));
        }

        NodeLogPage page = log.Read(0, 200, null);
        Assert.Equal(200, page.Items.Count);
        Assert.True(page.Items[0].Id > 4); // 最早的几条已经被环挤掉
        Assert.Equal(3004, page.LastId);
    }

    [Fact]
    public void SensitiveFieldsAreRedacted()
    {
        var log = new BufferedNodeLog(NullNodeLog.Instance, TimeProvider.System);
        log.Info("auth", ("token", "abc"), ("agent", "agt_x"));
        NodeLogEntry entry = Assert.Single(log.Read(0, 10, null).Items);
        Assert.Equal("[redacted]", entry.Record.Fields["token"]);
        Assert.Equal("agt_x", entry.Record.Fields["agent"]);
    }
}