using FluentValidation;
using Microsoft.AspNetCore.Mvc;
using Meezi.API.Models.Orders;
using Meezi.API.Models.Tables;
using Meezi.API.Services;
using Meezi.Core.Authorization;
using Meezi.Core.Interfaces;
using Meezi.Shared;

namespace Meezi.API.Controllers;

[Route("api/cafes/{cafeId}/tables")]
public class TablesController : CafeApiControllerBase
{
    private readonly ITableService _tableService;
    private readonly IOrderService _orderService;
    private readonly IValidator<CreateTableRequest> _createValidator;
    private readonly IValidator<PatchTableRequest> _patchValidator;
    private readonly IValidator<SetTableCleaningRequest> _cleaningValidator;

    public TablesController(
        ITableService tableService,
        IOrderService orderService,
        IValidator<CreateTableRequest> createValidator,
        IValidator<PatchTableRequest> patchValidator,
        IValidator<SetTableCleaningRequest> cleaningValidator)
    {
        _tableService = tableService;
        _orderService = orderService;
        _createValidator = createValidator;
        _patchValidator = patchValidator;
        _cleaningValidator = cleaningValidator;
    }

    [HttpGet("board")]
    public async Task<IActionResult> GetBoard(
        string cafeId,
        ITenantContext tenant,
        [FromQuery] bool activeOnly = true,
        [FromQuery] string? branchId = null,
        CancellationToken ct = default)
    {
        if (EnsureCafeAccess(cafeId, tenant) is { } denied) return denied;
        var data = await _tableService.GetTableBoardAsync(cafeId, activeOnly, branchId, ct);
        return Ok(new ApiResponse<IReadOnlyList<TableBoardDto>>(true, data));
    }

    [HttpGet]
    public async Task<IActionResult> GetTables(
        string cafeId,
        ITenantContext tenant,
        [FromQuery] string? branchId = null,
        CancellationToken ct = default)
    {
        if (EnsureCafeAccess(cafeId, tenant) is { } denied) return denied;
        var data = await _tableService.GetTablesAsync(cafeId, branchId, ct);
        return Ok(new ApiResponse<IReadOnlyList<TableDto>>(true, data));
    }

    [HttpPost]
    public async Task<IActionResult> CreateTable(
        string cafeId,
        [FromBody] CreateTableRequest request,
        ITenantContext tenant,
        CancellationToken ct)
    {
        if (EnsureCafeAccess(cafeId, tenant) is { } denied) return denied;
        if (EnsurePermission(tenant, Permission.ManageTables) is { } permDenied) return permDenied;
        var validation = await _createValidator.ValidateAsync(request, ct);
        if (!validation.IsValid) return BadRequest(ValidationError(validation));

        var data = await _tableService.CreateTableAsync(cafeId, request, ct);
        if (data is null) return NotFoundError("Branch not found.");
        return Ok(new ApiResponse<TableDto>(true, data));
    }

    [HttpPatch("{id}")]
    public async Task<IActionResult> PatchTable(
        string cafeId,
        string id,
        [FromBody] PatchTableRequest request,
        ITenantContext tenant,
        CancellationToken ct)
    {
        if (EnsureCafeAccess(cafeId, tenant) is { } denied) return denied;
        if (EnsurePermission(tenant, Permission.ManageTables) is { } permDenied) return permDenied;
        var validation = await _patchValidator.ValidateAsync(request, ct);
        if (!validation.IsValid) return BadRequest(ValidationError(validation));

        var data = await _tableService.PatchTableAsync(cafeId, id, request, ct);
        if (data is null) return NotFoundError();
        return Ok(new ApiResponse<TableDto>(true, data));
    }

    [HttpGet("{id}/active-order")]
    public async Task<IActionResult> GetActiveOrder(
        string cafeId,
        string id,
        ITenantContext tenant,
        CancellationToken ct)
    {
        if (EnsureCafeAccess(cafeId, tenant) is { } denied) return denied;
        var data = await _orderService.GetActiveOrderByTableAsync(cafeId, id, ct);
        if (data is null) return NotFoundError("No active order for this table.");
        return Ok(new ApiResponse<OrderDto>(true, data));
    }

    [HttpDelete("{id}")]
    public async Task<IActionResult> DeleteTable(
        string cafeId,
        string id,
        ITenantContext tenant,
        CancellationToken ct)
    {
        if (EnsureCafeAccess(cafeId, tenant) is { } denied) return denied;
        if (EnsurePermission(tenant, Permission.ManageTables) is { } permDenied) return permDenied;

        var result = await _tableService.DeleteTableAsync(cafeId, id, ct);
        if (!result.Success)
        {
            var status = result.ErrorCode == "TABLE_HAS_OPEN_ORDER"
                ? StatusCodes.Status409Conflict
                : StatusCodes.Status400BadRequest;
            return StatusCode(status,
                new ApiResponse<object>(false, null, new ApiError(result.ErrorCode!, result.Message ?? result.ErrorCode!)));
        }

        return Ok(new ApiResponse<object>(true, result.Data));
    }

    [HttpPatch("{id}/cleaning")]
    public async Task<IActionResult> SetCleaning(
        string cafeId,
        string id,
        [FromBody] SetTableCleaningRequest request,
        ITenantContext tenant,
        CancellationToken ct)
    {
        if (EnsureCafeAccess(cafeId, tenant) is { } denied) return denied;
        if (EnsurePermission(tenant, Permission.ManageTables) is { } permDenied) return permDenied;
        var validation = await _cleaningValidator.ValidateAsync(request, ct);
        if (!validation.IsValid) return BadRequest(ValidationError(validation));

        var data = await _tableService.SetTableCleaningAsync(cafeId, id, request.IsCleaning, ct);
        if (data is null) return NotFoundError();
        return Ok(new ApiResponse<TableBoardDto>(true, data));
    }

    [HttpGet("{id}/qr")]
    public async Task<IActionResult> GetQrPng(
        string cafeId,
        string id,
        ITenantContext tenant,
        CancellationToken ct)
    {
        if (EnsureCafeAccess(cafeId, tenant) is { } denied) return denied;
        var png = await _tableService.GetQrPngAsync(cafeId, id, ct);
        if (png is null) return NotFoundError();
        return File(png, "image/png", $"table-{id}-qr.png");
    }
}