using Knot.Modules.Conversations.Application.Chats.Avatar;
using Knot.Modules.Conversations.Application.Chats.Clear;
using Knot.Modules.Conversations.Application.Chats.Create;
using Knot.Modules.Conversations.Application.Chats.GetChatById;
using Knot.Modules.Conversations.Application.Chats.GetChats;
using Knot.Modules.Conversations.Application.Chats.GetOrCreateFavorites;
using Knot.Modules.Conversations.Application.Chats.LeaveOrDelete;
using Knot.Modules.Conversations.Application.Chats.Members;
using Knot.Modules.Conversations.Application.Chats.TogglePin;
using Knot.Modules.Conversations.Application.Chats.Update;
using Knot.Modules.Conversations.Application.DTOs;
using Knot.Contracts.Conversations.Domain;
using Knot.Shared.Kernel;
using MediatR;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Routing;

namespace Knot.Modules.Conversations.Presentation.Endpoints;

public static class ChatsEndpoints
{
    public static void MapChatsEndpoints(this WebApplication app)
    {
        var group = app.MapGroup("api/chats").RequireAuthorization();

        group.MapGet("", async (ISender sender, IUserContext userContext, CancellationToken ct) =>
        {
            var result = await sender.Send(new GetChatsQuery(userContext.UserId), ct);
            return result.IsSuccess ? Results.Ok(result.Value) : Results.BadRequest(result.Error.Description);
        });

        group.MapPost("", async ([FromBody] CreateChatRequest request, ISender sender, IUserContext userContext, CancellationToken ct) =>
        {
            var command = new CreateChatCommand(request.Name, request.Type, request.MemberIds);
            var result = await sender.Send(command, ct);
            if (result.IsFailure) return Results.BadRequest(result.Error.Description);

            var chatResult = await sender.Send(new GetChatByIdQuery(userContext.UserId, result.Value), ct);
            return Results.Ok(chatResult.Value);
        });

        group.MapPost("personal", async ([FromBody] CreatePersonalChatRequest request, ISender sender, IUserContext userContext, CancellationToken ct) =>
        {
            var command = new CreateChatCommand(string.Empty, ChatType.Personal, new List<Guid> { userContext.UserId, request.UserId });
            var result = await sender.Send(command, ct);
            if (result.IsFailure) return Results.BadRequest(result.Error.Description);

            var chatResult = await sender.Send(new GetChatByIdQuery(userContext.UserId, result.Value), ct);
            return Results.Ok(chatResult.Value);
        });

        group.MapPost("group", async ([FromBody] CreateGroupChatRequest request, ISender sender, IUserContext userContext, CancellationToken ct) =>
        {
            var memberIds = request.MemberIds.ToList();
            if (memberIds.Contains(userContext.UserId)) memberIds.Remove(userContext.UserId);
            memberIds.Insert(0, userContext.UserId);

            var command = new CreateChatCommand(request.Name, ChatType.Group, memberIds);
            var result = await sender.Send(command, ct);
            if (result.IsFailure) return Results.BadRequest(result.Error.Description);

            var chatResult = await sender.Send(new GetChatByIdQuery(userContext.UserId, result.Value), ct);
            return Results.Ok(chatResult.Value);
        });

        group.MapPost("favorites", async (ISender sender, IUserContext userContext, CancellationToken ct) =>
        {
            var result = await sender.Send(new GetOrCreateFavoritesCommand(userContext.UserId), ct);
            if (result.IsFailure) return Results.BadRequest(result.Error.Description);

            var chatResult = await sender.Send(new GetChatByIdQuery(userContext.UserId, result.Value), ct);
            return Results.Ok(chatResult.Value);
        });

        group.MapPut("{id:guid}", async ([FromRoute] Guid id, [FromBody] UpdateChatRequest request, ISender sender, IUserContext userContext, CancellationToken ct) =>
        {
            var result = await sender.Send(new UpdateChatCommand(id, userContext.UserId, request.Name, request.Description), ct);
            if (result.IsFailure) return Results.NotFound();

            var chatResult = await sender.Send(new GetChatByIdQuery(userContext.UserId, result.Value), ct);
            return Results.Ok(chatResult.Value);
        });

        group.MapDelete("{id:guid}", async ([FromRoute] Guid id, ISender sender, IUserContext userContext, CancellationToken ct) =>
        {
            var result = await sender.Send(new LeaveOrDeleteChatCommand(id, userContext.UserId), ct);
            if (result.IsFailure)
            {
                if (result.Error.Code == "Unauthorized") return Results.Forbid();
                return Results.NotFound();
            }
            return Results.Ok(result.Value);
        });

        group.MapPost("{id:guid}/clear", async ([FromRoute] Guid id, ISender sender, IUserContext userContext, CancellationToken ct) =>
        {
            var result = await sender.Send(new ClearChatCommand(id, userContext.UserId), ct);
            return result.IsSuccess ? Results.Ok(result.Value) : Results.NotFound();
        });

        group.MapPost("{id:guid}/pin", async ([FromRoute] Guid id, ISender sender, IUserContext userContext, CancellationToken ct) =>
        {
            var result = await sender.Send(new TogglePinCommand(id, userContext.UserId), ct);
            return result.IsSuccess ? Results.Ok(result.Value) : Results.NotFound();
        });

        group.MapPost("{id:guid}/members", async ([FromRoute] Guid id, [FromBody] AddMembersRequest request, ISender sender, IUserContext userContext, CancellationToken ct) =>
        {
            var result = await sender.Send(new AddMembersCommand(id, userContext.UserId, request.UserIds.ToList()), ct);
            if (result.IsFailure) return Results.NotFound();

            var chatResult = await sender.Send(new GetChatByIdQuery(userContext.UserId, result.Value), ct);
            return Results.Ok(chatResult.Value);
        });

        group.MapDelete("{id:guid}/members/{userId:guid}", async ([FromRoute] Guid id, [FromRoute] Guid userId, ISender sender, IUserContext userContext, CancellationToken ct) =>
        {
            var result = await sender.Send(new RemoveMemberCommand(id, userContext.UserId, userId), ct);
            if (result.IsFailure) return Results.NotFound();

            var chatResult = await sender.Send(new GetChatByIdQuery(userContext.UserId, result.Value), ct);
            return Results.Ok(chatResult.Value);
        });

        group.MapPost("{id:guid}/avatar", async ([FromRoute] Guid id, HttpRequest req, ISender sender, IUserContext userContext, CancellationToken ct) =>
        {
            if (!req.HasFormContentType) return Results.BadRequest("No file");
            var form = await req.ReadFormAsync(ct);
            var avatar = form.Files.FirstOrDefault();
            if (avatar == null || avatar.Length == 0) return Results.BadRequest("No file");

            using var stream = avatar.OpenReadStream();
            var result = await sender.Send(new UploadGroupAvatarCommand(id, userContext.UserId, avatar.FileName, avatar.ContentType, stream), ct);
            if (result.IsFailure) return Results.NotFound();

            var chatResult = await sender.Send(new GetChatByIdQuery(userContext.UserId, result.Value), ct);
            return Results.Ok(chatResult.Value);
        }).DisableAntiforgery();

        group.MapPost("{id:guid}/avatar/crop", async ([FromRoute] Guid id, HttpRequest req, ISender sender, IUserContext userContext, CancellationToken ct) =>
        {
            if (!req.HasFormContentType) return Results.BadRequest("No file");
            var form = await req.ReadFormAsync(ct);
            var avatar = form.Files.FirstOrDefault();
            if (avatar == null || avatar.Length == 0) return Results.BadRequest("No file");

            int.TryParse(form["x"], out int x);
            int.TryParse(form["y"], out int y);
            int.TryParse(form["width"], out int width);
            int.TryParse(form["height"], out int height);

            using var stream = avatar.OpenReadStream();
            var result = await sender.Send(new CropGroupAvatarCommand(id, userContext.UserId, avatar.FileName ?? "avatar.jpg", avatar.ContentType, stream, x, y, width, height), ct);
            if (result.IsFailure) return Results.NotFound();

            var chatResult = await sender.Send(new GetChatByIdQuery(userContext.UserId, result.Value), ct);
            return Results.Ok(chatResult.Value);
        }).DisableAntiforgery();

        group.MapDelete("{id:guid}/avatar", async ([FromRoute] Guid id, ISender sender, IUserContext userContext, CancellationToken ct) =>
        {
            var result = await sender.Send(new RemoveGroupAvatarCommand(id, userContext.UserId), ct);
            if (result.IsFailure) return Results.NotFound();

            var chatResult = await sender.Send(new GetChatByIdQuery(userContext.UserId, result.Value), ct);
            return Results.Ok(chatResult.Value);
        });
    }
}