using AutoBidder.Models;
using AutoBidder.Services;
using Xunit;

namespace AutoBidder.Tests;

public class ApplicationStateServiceTests
{
    // === Auctions ===

    [Fact]
    public void Auctions_Initially_Empty()
    {
        var service = new ApplicationStateService();
        Assert.Empty(service.Auctions);
    }

    [Fact]
    public void AddAuction_AddsToList()
    {
        var service = new ApplicationStateService();
        service.AddAuction(new AuctionInfo { AuctionId = "1", Name = "Test" });

        Assert.Single(service.Auctions);
        Assert.Equal("1", service.Auctions[0].AuctionId);
    }

    [Fact]
    public void AddAuction_DuplicateId_DoesNotAdd()
    {
        var service = new ApplicationStateService();
        service.AddAuction(new AuctionInfo { AuctionId = "1", Name = "First" });
        service.AddAuction(new AuctionInfo { AuctionId = "1", Name = "Second" });

        Assert.Single(service.Auctions);
        Assert.Equal("First", service.Auctions[0].Name);
    }

    [Fact]
    public void RemoveAuction_ExistingAuction_RemovesFromList()
    {
        var service = new ApplicationStateService();
        var auction = new AuctionInfo { AuctionId = "1" };
        service.AddAuction(auction);

        service.RemoveAuction(auction);

        Assert.Empty(service.Auctions);
    }

    [Fact]
    public void RemoveAuction_SelectedAuction_ClearsSelection()
    {
        var service = new ApplicationStateService();
        var auction = new AuctionInfo { AuctionId = "1" };
        service.AddAuction(auction);
        service.SetSelectedAuctionDirect(auction);

        service.RemoveAuction(auction);

        Assert.Null(service.SelectedAuction);
    }

    [Fact]
    public void UpdateAuction_ExistingAuction_ReplacesInList()
    {
        var service = new ApplicationStateService();
        var original = new AuctionInfo { AuctionId = "1", Name = "Original" };
        service.AddAuction(original);

        var updated = new AuctionInfo { AuctionId = "1", Name = "Updated" };
        service.UpdateAuction(updated);

        Assert.Single(service.Auctions);
        Assert.Equal("Updated", service.Auctions[0].Name);
    }

    [Fact]
    public void UpdateAuction_SelectedAuction_UpdatesSelection()
    {
        var service = new ApplicationStateService();
        var auction = new AuctionInfo { AuctionId = "1", Name = "Original" };
        service.AddAuction(auction);
        service.SetSelectedAuctionDirect(auction);

        var updated = new AuctionInfo { AuctionId = "1", Name = "Updated" };
        service.UpdateAuction(updated);

        Assert.Equal("Updated", service.SelectedAuction!.Name);
    }

    [Fact]
    public void SetAuctions_ReplacesEntireList()
    {
        var service = new ApplicationStateService();
        service.AddAuction(new AuctionInfo { AuctionId = "old" });

        var newList = new List<AuctionInfo>
        {
            new() { AuctionId = "new1" },
            new() { AuctionId = "new2" }
        };
        service.SetAuctions(newList);

        Assert.Equal(2, service.Auctions.Count);
    }

    [Fact]
    public void GetAuctionById_ExistingId_ReturnsAuction()
    {
        var service = new ApplicationStateService();
        service.AddAuction(new AuctionInfo { AuctionId = "42", Name = "Found" });

        var result = service.GetAuctionById("42");

        Assert.NotNull(result);
        Assert.Equal("Found", result!.Name);
    }

    [Fact]
    public void GetAuctionById_NonExistent_ReturnsNull()
    {
        var service = new ApplicationStateService();
        Assert.Null(service.GetAuctionById("missing"));
    }

    // === SelectedAuction ===

    [Fact]
    public void SetSelectedAuctionDirect_SetsWithoutEvent()
    {
        var service = new ApplicationStateService();
        var auction = new AuctionInfo { AuctionId = "1" };

        service.SetSelectedAuctionDirect(auction);

        Assert.Equal("1", service.SelectedAuction!.AuctionId);
    }

    // === Log ===

    [Fact]
    public void AddLog_AddsEntry()
    {
        var service = new ApplicationStateService();
        service.AddLog("Test message");

        Assert.Single(service.GlobalLog);
        Assert.Equal("Test message", service.GlobalLog[0].Message);
    }

    [Fact]
    public void AddLog_TruncatesAtLimit()
    {
        var service = new ApplicationStateService();
        for (int i = 0; i < 600; i++)
        {
            service.AddLog($"Message {i}");
        }

        Assert.True(service.GlobalLog.Count <= 500);
    }

    [Fact]
    public void ClearLog_EmptiesLog()
    {
        var service = new ApplicationStateService();
        service.AddLog("Test");
        service.AddLog("Test2");

        service.ClearLog();

        Assert.Empty(service.GlobalLog);
    }

    // === Manual Bidding ===

    [Fact]
    public void IsManualBidding_Default_ReturnsFalse()
    {
        var service = new ApplicationStateService();
        Assert.False(service.IsManualBidding("123"));
    }

    [Fact]
    public void StartManualBidding_SetsFlag()
    {
        var service = new ApplicationStateService();
        service.StartManualBidding("123");

        Assert.True(service.IsManualBidding("123"));
    }

    [Fact]
    public void StopManualBidding_ClearsFlag()
    {
        var service = new ApplicationStateService();
        service.StartManualBidding("123");
        service.StopManualBidding("123");

        Assert.False(service.IsManualBidding("123"));
    }

    // === Monitoring State ===

    [Fact]
    public void IsMonitoringActive_Default_False()
    {
        var service = new ApplicationStateService();
        Assert.False(service.IsMonitoringActive);
    }

    [Fact]
    public void IsMonitoringActive_SetTrue_ReturnsTrue()
    {
        var service = new ApplicationStateService();
        service.IsMonitoringActive = true;
        Assert.True(service.IsMonitoringActive);
    }

    // === Browser State ===

    [Fact]
    public void BrowserCategoryIndex_DefaultZero()
    {
        var service = new ApplicationStateService();
        Assert.Equal(0, service.BrowserCategoryIndex);
    }

    [Fact]
    public void BrowserSearchQuery_DefaultEmpty()
    {
        var service = new ApplicationStateService();
        Assert.Equal("", service.BrowserSearchQuery);
    }

    [Fact]
    public void BrowserCategoryIndex_SetAndGet()
    {
        var service = new ApplicationStateService();
        service.BrowserCategoryIndex = 5;
        Assert.Equal(5, service.BrowserCategoryIndex);
    }

    [Fact]
    public void BrowserSearchQuery_SetAndGet()
    {
        var service = new ApplicationStateService();
        service.BrowserSearchQuery = "iphone";
        Assert.Equal("iphone", service.BrowserSearchQuery);
    }

    // === Direct References ===

    [Fact]
    public void GetAuctionsDirectRef_ReturnsSameList()
    {
        var service = new ApplicationStateService();
        service.AddAuction(new AuctionInfo { AuctionId = "1" });

        var direct = service.GetAuctionsDirectRef();

        Assert.Single(direct);
    }

    [Fact]
    public void GetLogDirectRef_ReturnsSameList()
    {
        var service = new ApplicationStateService();
        service.AddLog("test");

        var direct = service.GetLogDirectRef();

        Assert.Single(direct);
    }

    // === SessionStart ===

    [Fact]
    public void SessionStart_ReturnsNonDefault()
    {
        var service = new ApplicationStateService();
        Assert.True(service.SessionStart > DateTime.MinValue);
    }
}