using System.Security.Claims;
using System.Text.Json;
using System.Text.Json.Nodes;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using RadicadeServer.Admin;
using RadicadeServer.API.Avatars.V2;
using RadicadeServer.API.Storefront;
using RadicadeServer.DB;
using RadicadeServer.RecNet.Avatar;
using RadicadeServer.RecNet.Enums.Store;
using Xunit;

namespace RadicadeServer.Tests;

/// <summary>
/// The Gift Player page in the admin panel posts one <c>gift_log</c> row per account to
/// <c>POST admin/panel/gift_log</c>, and AddGiftLogRows turns each row into a real gift box on
/// that account. The box carries its sender as RecNet's Gift.FromPlayerId, and that is what the
/// player reads off the box - so the panel's "Gift From" field has to land there, not only on the
/// panel's own log row.
///
/// The panel sends ids (both player_id and from_player_id) as digits in a JSON string, because a
/// platform id is seventeen digits and a JSON number cannot hold that many exactly.
///
/// These tests drive the real route and then read the box back the way a client does -
/// GET api/avatar/v2/gifts - rather than inspecting the row the route answered with, so a sender
/// stored in the log but not on the box fails here.
public class AdminGiftFromTests
{
    private const string Secret = "test-bot-secret";

    private static RecDBContext NewDb() => new(
        TestDbOptions.Create()
            .UseInMemoryDatabase(Guid.NewGuid().ToString())
            .Options);

    /// <summary>Posts one gift_log row through the route, and returns the row the route answered with.</summary>
    private static async Task<JsonObject> GiveAsync(RecDBContext db, string rowJson)
    {
        var api = new AdminPanelAPI(db);
        var originalKey = DBConfig.AdminApiKey;
        var originalLogs = DBConfig.PersistentLogs;
        DBConfig.AdminApiKey = Secret;
        DBConfig.PersistentLogs = Path.Join(Path.GetTempPath(), "radicade-admin-tests-" + Guid.NewGuid().ToString("N"));
        try
        {
            var payload = JsonDocument.Parse(rowJson).RootElement;
            var result = await api.Insert("gift_log", Secret, payload);
            var ok = Assert.IsType<OkObjectResult>(result);
            return Assert.IsType<JsonObject>(ok.Value);
        }
        finally
        {
            DBConfig.AdminApiKey = originalKey;
            DBConfig.PersistentLogs = originalLogs;
        }
    }

    /// <summary>The box as the recipient's client reads it: GET api/avatar/v2/gifts.</summary>
    private static async Task<List<Gift>> ClientGiftsAsync(RecDBContext db, long playerId)
    {
        var api = new AvatarV2(db)
        {
            ControllerContext = new ControllerContext
            {
                HttpContext = new DefaultHttpContext
                {
                    User = new ClaimsPrincipal(new ClaimsIdentity(
                        [new Claim(ClaimTypes.NameIdentifier, playerId.ToString())], "test"))
                }
            }
        };

        var result = await api.GetGifts();
        var ok = Assert.IsType<OkObjectResult>(result);
        return Assert.IsAssignableFrom<IEnumerable<Gift>>(ok.Value).ToList();
    }

    /// <summary>The JSON a client actually receives for one box, with the server's own naming.</summary>
    private static JsonElement SerializeAsClient(Gift gift)
        => JsonDocument.Parse(JsonSerializer.Serialize(gift)).RootElement;

    private const long Recipient = 114903603133502227;
    private const long Sender = 733901112234567890;

    [Fact]
    public async Task TheGiftFromBecomesTheBoxSenderTheClientReads()
    {
        var db = NewDb();

        var row = await GiveAsync(db, $$"""
        {
          "player_id": "{{Recipient}}",
          "from_player_id": "{{Sender}}",
          "message": "Thanks for the help!",
          "context": "Game_Drop",
          "rarity": "Rare",
          "avatar": "8aa79563-ace1-4ba7-ad0c-f3210a78142f,"
        }
        """);

        // The route's answer is the panel's record of what it did.
        Assert.Equal(true, row["sent"]?.GetValue<bool>());
        Assert.Equal(Sender, row["from_player_id"]!.GetValue<long>());

        // The box itself, stored against the recipient.
        var stored = Assert.Single(await StorefrontShared.GetPendingGiftsAsync(db, Recipient));
        Assert.Equal(Sender, stored.FromPlayerId);

        // And what the client reads off that stored box.
        var read = Assert.Single(await ClientGiftsAsync(db, Recipient));
        Assert.Equal(Sender, read.FromPlayerId);

        var wire = SerializeAsClient(read);
        Assert.Equal(Sender, wire.GetProperty("FromPlayerId").GetInt64());
        Assert.Equal(Rarity.Rare, read.Rarity);
        Assert.Equal(GiftContext.Game_Drop, read.Context);
    }

    [Fact]
    public async Task ABlankGiftFromSendsItFromTheRadicadeTeam()
    {
        var db = NewDb();

        // The panel leaves from_player_id out entirely when the field is blank; the box then
        // comes from the Radicade account, the same sender the server's own admin gifts use.
        var row = await GiveAsync(db, $$"""
        {
          "player_id": "{{Recipient}}",
          "context": "Game_Drop",
          "rarity": "Common",
          "cons": "00000000-0000-0000-0000-000000000000,"
        }
        """);

        Assert.Equal(true, row["sent"]?.GetValue<bool>());
        Assert.Equal(1L, row["from_player_id"]!.GetValue<long>());

        var read = Assert.Single(await ClientGiftsAsync(db, Recipient));
        Assert.Equal(1L, read.FromPlayerId);
    }

    [Fact]
    public async Task ASeventeenDigitSenderIsNotRoundedOrOverflowed()
    {
        var db = NewDb();

        // Both ids are past int.MaxValue, which is why the panel posts them as text.
        Assert.True(Sender > int.MaxValue);
        Assert.True(Recipient > int.MaxValue);

        await GiveAsync(db, $$"""
        {
          "player_id": "{{Recipient}}",
          "from_player_id": "{{Sender}}",
          "context": "Game_Drop",
          "rarity": "Common",
          "equip": "Sword"
        }
        """);

        var read = Assert.Single(await ClientGiftsAsync(db, Recipient));
        Assert.Equal(Sender, read.FromPlayerId);
    }

    [Fact]
    public async Task ASenderThePanelDidNotSendDoesNotClearTheTeamDefault()
    {
        var db = NewDb();

        // Nonsense in the field is refused by the panel before it posts; if it ever reaches the
        // route anyway the box still has a sender rather than a bare zero.
        await GiveAsync(db, $$"""
        {
          "player_id": "{{Recipient}}",
          "from_player_id": "not-a-player",
          "context": "Game_Drop",
          "rarity": "Common",
          "cons": "00000000-0000-0000-0000-000000000000,"
        }
        """);

        var read = Assert.Single(await ClientGiftsAsync(db, Recipient));
        Assert.Equal(1L, read.FromPlayerId);
    }
}