using System.Collections.Concurrent;
using System.Security.Claims;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using RadicadeServer.DB;
using RadicadeServer.Extensions;
using RadicadeServer.RecNet.Enums.Rooms;
using RadicadeServer.Utils;

namespace RadicadeServer.API.Studio
{
		[Route("studio")]
	public class StudioAPI : Controller
	{
		private sealed record StoredCloudBuild(long RoomId, long SubRoomId, StudioCloudBuild Build);
		private static readonly ConcurrentDictionary<string, StoredCloudBuild> CloudBuilds = new(StringComparer.Ordinal);

		private readonly ILogger<StudioAPI> logger;
		private readonly StudioBuildWorker worker;
		private readonly IDbContextFactory<RecDBContext> dbFactory;

		public StudioAPI(ILogger<StudioAPI> logger, StudioBuildWorker worker, IDbContextFactory<RecDBContext> dbFactory)
		{
			this.logger = logger;
			this.worker = worker;
			this.dbFactory = dbFactory;
		}

		[HttpGet("cloud-builds/for-room"), Authorize]
		public async Task<IActionResult> CloudBuildsForRoom(
			[FromQuery] long roomId,
			[FromQuery] long subRoomId,
			[FromQuery] int skip = 0,
			[FromQuery] int take = 30)
		{
			if (roomId <= 0 || subRoomId <= 0) return BadRequest();
			var accountId = CurrentAccountId();
			if (accountId == null) return Unauthorized();
			if (!await CanBuildInRoomAsync(roomId, accountId.Value, HttpContext.RequestAborted)) return Forbid();

			logger.LogInformation("Studio cloud builds requested: room={RoomId}, subRoom={SubRoomId}, skip={Skip}, take={Take}.",
				roomId, subRoomId, skip, take);

			return Ok(BuildPage(roomId, subRoomId, skip, take));
		}

				private static object BuildPage(long roomId, long subRoomId, int skip, int take)
		{
			var builds = CloudBuilds.Values
				.Where(x => (roomId == 0 || x.RoomId == roomId) && (subRoomId == 0 || x.SubRoomId == subRoomId))
				.OrderByDescending(x => x.Build.StartedAt)
				.ToList();
			var page = builds.Skip(Math.Max(0, skip)).Take(Math.Clamp(take, 0, 100)).Select(x => x.Build).ToList();
			return new { Results = page, TotalResults = builds.Count, TotalCount = builds.Count };
		}

				[HttpPost("cloud-builds/create"), Authorize]
		public async Task<IActionResult> CreateCloudBuild(
			[FromQuery] long? roomId = null,
			[FromQuery] long? subRoomId = null,
			[FromQuery] long? subRoomDataSaveId = null,
			[FromQuery] bool? autoPublish = null,
			[FromQuery] string? buildBranch = null)
		{


			var form = Request.HasFormContentType
				? await Request.ReadFormAsync(HttpContext.RequestAborted)
				: null;
			long? FormLong(string key) => long.TryParse(form?[key].ToString(), System.Globalization.NumberStyles.Integer,
				System.Globalization.CultureInfo.InvariantCulture, out var value) ? value : null;
			bool? FormBool(string key) => bool.TryParse(form?[key].ToString(), out var value) ? value : null;
			roomId ??= FormLong("roomId");
			subRoomId ??= FormLong("subRoomId");
			subRoomDataSaveId ??= FormLong("subRoomDataSaveId");
			autoPublish ??= FormBool("autoPublish");
			buildBranch ??= form?["buildBranch"].ToString();

			if (roomId is not > 0 || subRoomId is not > 0 || subRoomDataSaveId is not > 0)
				return BadRequest(new { Success = false, Error = "roomId, subRoomId and subRoomDataSaveId are required", Value = (object?)null });

			var resolvedRoomId = roomId.Value;
			var resolvedSubRoomId = subRoomId.Value;
			var resolvedSaveId = subRoomDataSaveId.Value;
			var resolvedAutoPublish = autoPublish ?? false;
			var resolvedBuildBranch = buildBranch;

			var accountId = CurrentAccountId();
			if (accountId == null || accountId > int.MaxValue)
				return Unauthorized(new { Success = false, Error = "The Studio account could not be resolved.", Value = (object?)null });

			await using (var db = await dbFactory.CreateDbContextAsync(HttpContext.RequestAborted))
			{
				var room = await db.Rooms.AsNoTracking().FirstOrDefaultAsync(x => x.RoomId == resolvedRoomId, HttpContext.RequestAborted);
				var canBuild = room != null && (room.CreatorAccountId == accountId.Value ||
					await db.RoomRoles.AsNoTracking().AnyAsync(x => x.RoomId == resolvedRoomId && x.AccountId == accountId.Value && x.Role >= RoleType.CoOwner,
						HttpContext.RequestAborted));
				if (!canBuild)
					return Forbid();
			}

			var now = DateTime.UtcNow;
			var build = new StudioCloudBuild(
				Guid.NewGuid().ToString("N"), now, null,
				null, string.Empty, (int)accountId);
			CloudBuilds[build.CloudBuildId] = new StoredCloudBuild(resolvedRoomId, resolvedSubRoomId, build);
			var job = new StudioBuildWorker.BuildJob(build.CloudBuildId, resolvedRoomId, resolvedSubRoomId,
				resolvedSaveId, accountId.Value, dbFactory, build, updated =>
					CloudBuilds.AddOrUpdate(build.CloudBuildId,
						_ => new StoredCloudBuild(resolvedRoomId, resolvedSubRoomId, updated),
						(_, existing) => existing with { Build = updated }));
			worker.Enqueue(job);
			logger.LogInformation("Queued local Studio Windows build: room={RoomId}, subRoom={SubRoomId}, save={SaveId}, autoPublish={AutoPublish}, branch={BuildBranch}, cloudBuild={CloudBuildId}.",
					resolvedRoomId, resolvedSubRoomId, resolvedSaveId, resolvedAutoPublish, resolvedBuildBranch, build.CloudBuildId);

			return Ok(new { Success = true, Error = (string?)null, Value = build });
		}

		[HttpGet("cloud-builds"), Authorize]
		public async Task<IActionResult> CloudBuild([FromQuery] string cloudBuildId)
		{
			if (!CloudBuilds.TryGetValue(cloudBuildId, out var stored)) return NotFound();
			var accountId = CurrentAccountId();
			if (accountId == null) return Unauthorized();
			if (!await CanBuildInRoomAsync(stored.RoomId, accountId.Value, HttpContext.RequestAborted)) return Forbid();
			return Ok(stored.Build);
		}

		private long? CurrentAccountId()
		{
			if (long.TryParse(User.FindFirstValue("userId"), out var userId) && userId > 0) return userId;
			if (long.TryParse(User.FindFirstValue(ClaimTypes.NameIdentifier), out var identifier) && identifier > 0) return identifier;
			return null;
		}

		private async Task<bool> CanBuildInRoomAsync(long roomId, long accountId, CancellationToken cancellationToken)
		{
			await using var db = await dbFactory.CreateDbContextAsync(cancellationToken);
			var room = await db.Rooms.AsNoTracking().FirstOrDefaultAsync(x => x.RoomId == roomId, cancellationToken);
			return room != null && (room.CreatorAccountId == accountId ||
				await db.RoomRoles.AsNoTracking().AnyAsync(x => x.RoomId == roomId && x.AccountId == accountId && x.Role >= RoleType.CoOwner,
					cancellationToken));
		}

				[HttpGet("collaboration/owners-in-room")]
		public IActionResult OwnersInRoom([FromQuery] long roomId)
		{
			logger.LogInformation("Studio owners-in-room requested: room={RoomId}; answering an empty owner list.", roomId);
			return Ok(new { Success = true, Error = (string?)null, Value = Array.Empty<int>() });
		}

		[HttpGet("analytics/rudderstack-api-key")]
		public IActionResult RudderstackApiKey()
		{



			return Ok(new { key = string.Empty, value = string.Empty });
		}
	}
}

public sealed record StudioCloudBuild(
	string CloudBuildId,
	DateTime StartedAt,
	DateTime? CompletedAt,
	string? Error,
	string UnityAssetId,
	int CreatedByAccountId);