using Distribution.Infra.Authorization;
using Distribution.Models;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;

namespace Distribution.Features.Expense;

[ApiController]
[Route("api/expenses")]
public class ExpenseController(
    ExpenseService service,
    IPermissionService permissions,
    ICurrentUserService currentUser) : ControllerBase
{
    private async Task<bool> HasAsync(string code)
    {
        if (currentUser.RoleId is not { } roleId) return false;
        return await permissions.HasPermissionAsync(roleId, code);
    }

    [HttpGet]
    [Authorize("expense.view")]
    public async Task<IActionResult> List(
        [FromQuery] ExpenseStatus? status,
        [FromQuery] Guid? categoryId,
        [FromQuery] Guid? warehouseId,
        [FromQuery] DateTime? from,
        [FromQuery] DateTime? to,
        [FromQuery] int page = 1,
        [FromQuery] int pageSize = 20) =>
        Ok(await service.ListAsync(status, categoryId, warehouseId, from, to, page, pageSize));

    [HttpGet("{id:guid}")]
    [Authorize("expense.view")]
    public async Task<IActionResult> Get(Guid id)
    {
        var result = await service.GetAsync(id);
        return result is null ? NotFound() : Ok(result);
    }

    /// <summary>
    /// Create endpoint takes a required ?action= query to drive the 4 form buttons:
    /// draft → Save draft; post → Save & post (requires expense.post); pay → Save & pay
    /// (requires expense.post + expense.pay). Draft is the default.
    /// </summary>
    [HttpPost]
    [Authorize("expense.create")]
    public async Task<IActionResult> Create(
        CreateExpenseRequest request,
        [FromQuery] ExpenseAction action = ExpenseAction.Draft,
        CancellationToken ct = default)
    {
        if (action is ExpenseAction.Post or ExpenseAction.Pay && !await HasAsync("expense.post"))
            return Forbid();
        if (action == ExpenseAction.Pay && !await HasAsync("expense.pay"))
            return Forbid();

        try { return Ok(await service.CreateAsync(request, action, ct)); }
        catch (InvalidOperationException ex) { return BadRequest(new { error = ex.Message }); }
    }

    [HttpPut("{id:guid}")]
    [Authorize("expense.create")]
    public async Task<IActionResult> UpdateDraft(Guid id, UpdateExpenseDraftRequest request, CancellationToken ct)
    {
        try
        {
            var result = await service.UpdateDraftAsync(id, request, ct);
            return result is null ? NotFound() : Ok(result);
        }
        catch (InvalidOperationException ex) { return BadRequest(new { error = ex.Message }); }
    }

    [HttpPost("{id:guid}/post")]
    [Authorize("expense.post")]
    public async Task<IActionResult> Post(Guid id, CancellationToken ct)
    {
        try
        {
            var result = await service.PostAsync(id, ct);
            return result is null ? NotFound() : Ok(result);
        }
        catch (InvalidOperationException ex) { return BadRequest(new { error = ex.Message }); }
    }

    [HttpPost("{id:guid}/pay")]
    [Authorize("expense.pay")]
    public async Task<IActionResult> Pay(Guid id, ExpensePaymentRequest request, CancellationToken ct)
    {
        try
        {
            var result = await service.PayAsync(id, request, ct);
            return result is null ? NotFound() : Ok(result);
        }
        catch (InvalidOperationException ex) { return BadRequest(new { error = ex.Message }); }
    }

    [HttpPost("{id:guid}/void")]
    [Authorize("expense.void")]
    public async Task<IActionResult> Void(Guid id, VoidExpenseRequest request, CancellationToken ct)
    {
        try
        {
            var result = await service.VoidAsync(id, request?.Reason, ct);
            return result is null ? NotFound() : Ok(result);
        }
        catch (InvalidOperationException ex) { return BadRequest(new { error = ex.Message }); }
    }
}