using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using RadicadeServer.API.Notifications;
using RadicadeServer.DB;
using RadicadeServer.Extensions;
using RadicadeServer.RecNet.Enums.Messages;
using RadicadeServer.RecNet.Messages;
using RadicadeServer.RecNet.Notifications;
using RadicadeServer.RecNet.Relationships;

namespace RadicadeServer.API.Relationships.V2;

[Route("api/relationships/v2")]
public class RelationshipsV2(RecDBContext db) : Controller
{
	[HttpGet("get"), Authorize]
	public async Task<List<Relationship>> GetRelationships()
	{
		var userId = User.GetUserId();

		var rows = await db.Relationships.AsNoTracking()
			.Where(x => x.AccountId == userId)
			.ToListAsync();

		return rows.Select(relationship => new Relationship(relationship)).ToList();
	}

	[HttpGet("friends"), Authorize]
	public async Task<List<Relationship>> GetFriends()
	{
		var userId = User.GetUserId();

		var rows = await db.Relationships.AsNoTracking()
			.Where(x => x.AccountId == userId && x.RelationshipType == RelationshipType.Friend)
			.OrderBy(x => x.RelationshipId)
			.ToListAsync();

		return rows.Select(relationship => new Relationship(relationship)).ToList();
	}

	[HttpGet("sendfriendrequest"), Authorize]
	[HttpPost("sendfriendrequest"), Authorize]
	public async Task<IActionResult> SendFriendRequest(long id)
	{
		var userId = User.GetUserId();
		if (userId == null || id <= 0 || id == userId)
			return BadRequest(new { error = "invalid player id" });

		var mine = await RelationshipsShared.GetOrCreate(db, (long)userId, id);
		var theirs = await RelationshipsShared.GetOrCreate(db, id, (long)userId);

		if (mine.RelationshipType != RelationshipType.None)
			return Ok(new Relationship(mine));

		mine.RelationshipType = RelationshipType.FriendRequestSent;
		theirs.RelationshipType = RelationshipType.FriendRequestReceived;
		await db.SaveChangesAsync();

		await Notify.SendNotify((long)userId, new Notification { Id = Notifs.RelationshipChanged, Msg = new Relationship(mine) });
		await Notify.SendNotify(id, new Notification { Id = Notifs.RelationshipChanged, Msg = new Relationship(theirs) });

		await Notify.SendMessage(id, new Message { FromPlayerId = (long)userId, Type = MessageType.FriendInvite });

		return Ok(new Relationship(mine));
	}

	[HttpGet("acceptfriendrequest"), Authorize]
	[HttpPost("acceptfriendrequest"), Authorize]
	public async Task<IActionResult> AcceptFriendRequest(long id)
	{
		var userId = User.GetUserId();
		if (userId == null || id <= 0 || id == userId)
			return BadRequest(new { error = "invalid player id" });

		var mine = await db.Relationships
			.FirstOrDefaultAsync(x => x.AccountId == userId && x.PlayerId == id);
		var theirs = await db.Relationships
			.FirstOrDefaultAsync(x => x.AccountId == id && x.PlayerId == userId);

		if (mine == null || theirs == null ||
			mine.RelationshipType != RelationshipType.FriendRequestReceived ||
			theirs.RelationshipType != RelationshipType.FriendRequestSent)
		{
			return Ok(mine != null ? new Relationship(mine) : new Relationship());
		}

		mine.RelationshipType = RelationshipType.Friend;
		theirs.RelationshipType = RelationshipType.Friend;
		await db.SaveChangesAsync();

		await Notify.SendNotify((long)userId, new Notification { Id = Notifs.RelationshipChanged, Msg = new Relationship(mine) });
		await Notify.SendNotify(id, new Notification { Id = Notifs.RelationshipChanged, Msg = new Relationship(theirs) });

		await Notify.SendMessage(id, new Message { FromPlayerId = (long)userId, Type = MessageType.FriendRequestAccepted });

		return Ok(new Relationship(mine));
	}

	[HttpGet("addfriend"), Authorize]
	[HttpPost("addfriend"), Authorize]
	public async Task<IActionResult> AddFriend(long id)
	{
		var userId = User.GetUserId();
		if (userId == null || id <= 0 || id == userId)
			return BadRequest(new { error = "invalid player id" });

		var mine = await RelationshipsShared.GetOrCreate(db, (long)userId, id);
		var theirs = await RelationshipsShared.GetOrCreate(db, id, (long)userId);

		if (mine.RelationshipType == RelationshipType.FriendRequestReceived || theirs.RelationshipType == RelationshipType.FriendRequestReceived)
		{
			mine.RelationshipType = RelationshipType.Friend;
			theirs.RelationshipType = RelationshipType.Friend;
		}
		else if (mine.RelationshipType == RelationshipType.None && theirs.RelationshipType == RelationshipType.None)
		{
			mine.RelationshipType = RelationshipType.FriendRequestSent;
			theirs.RelationshipType = RelationshipType.FriendRequestReceived;
		}

		await db.SaveChangesAsync();

		await Notify.SendNotify((long)userId, new Notification { Id = Notifs.RelationshipChanged, Msg = new Relationship(mine) });
		await Notify.SendNotify(id, new Notification { Id = Notifs.RelationshipChanged, Msg = new Relationship(theirs) });

		await Notify.SendMessage(id, new Message { FromPlayerId = (long)userId, Type = MessageType.FriendInvite });

		return Ok(new Relationship(mine));
	}

	[HttpGet("removefriend"), Authorize]
	[HttpPost("removefriend"), Authorize]
	public async Task<IActionResult> RemoveFriend(long id)
	{
		var userId = User.GetUserId();
		if (userId == null || id <= 0 || id == userId)
			return BadRequest(new { error = "invalid player id" });

		var mine = await RelationshipsShared.GetOrCreate(db, (long)userId, id);
		var theirs = await RelationshipsShared.GetOrCreate(db, id, (long)userId);

		mine.RelationshipType = RelationshipType.None;
		theirs.RelationshipType = RelationshipType.None;
		await db.SaveChangesAsync();

		await Notify.SendNotify((long)userId, new Notification { Id = Notifs.RelationshipChanged, Msg = new Relationship(mine) });
		await Notify.SendNotify(id, new Notification { Id = Notifs.RelationshipChanged, Msg = new Relationship(theirs) });

		return Ok(new Relationship(mine));
	}
}