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

namespace Distribution.Features.Invoice;

[ApiController]
[Route("api/invoices")]
public class InvoiceController(InvoiceService service, ICurrentUserService currentUser) : ControllerBase
{
    [HttpGet]
    public async Task<IActionResult> GetAll(
        [FromQuery] Guid? agentId,
        [FromQuery] Guid? routeId,
        [FromQuery] Guid? shopId,
        [FromQuery] InvoiceStatus? status,
        [FromQuery] PaymentStatus? paymentStatus,
        [FromQuery] int page = 1,
        [FromQuery] int pageSize = 20)
    {
        var result = await service.GetAllAsync(agentId, routeId, shopId, status, paymentStatus, page, pageSize);
        return Ok(result);
    }

    [HttpGet("outstanding-summary")]
    public async Task<IActionResult> GetOutstandingSummary()
    {
        var result = await service.GetOutstandingSummaryAsync();
        return Ok(result);
    }

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

    [HttpPost]
    public async Task<IActionResult> Create([FromBody] CreateInvoiceRequest request, CancellationToken ct)
    {
        // TEMPORARY: currentUser.UserId is always unset due to the broken auth middleware
        // (testbug.md #28) — fall back to the explicitly supplied user until that's fixed.
        var userId = currentUser.UserId ?? request.CreatedByUserId;
        if (userId is null) return BadRequest(new { error = "CreatedByUserId is required while auth is unavailable" });
        try
        {
            var result = await service.CreateAsync(request, userId.Value, ct);
            return CreatedAtAction(nameof(GetById), new { id = result.Id }, result);
        }
        catch (KeyNotFoundException) { return NotFound(); }
        catch (InvalidOperationException ex) { return BadRequest(new { error = ex.Message }); }
    }

    [HttpGet("{id:guid}/versions")]
    public async Task<IActionResult> GetVersions(Guid id)
    {
        var result = await service.GetVersionsAsync(id);
        return result is null ? NotFound() : Ok(result);
    }

    [HttpPut("{id:guid}/items")]
    public async Task<IActionResult> UpdateItems(Guid id, [FromBody] UpdateInvoiceItemsRequest request, CancellationToken ct)
    {
        // TEMPORARY: currentUser.UserId is always unset due to the broken auth middleware
        // (testbug.md #28) — fall back to the explicitly supplied user until that's fixed.
        var userId = currentUser.UserId ?? request.EditedByUserId;
        if (userId is null) return BadRequest(new { error = "EditedByUserId is required while auth is unavailable" });
        try
        {
            var result = await service.UpdateItemsAsync(id, request, userId.Value, ct);
            return Ok(result);
        }
        catch (KeyNotFoundException) { return NotFound(); }
        catch (InvalidOperationException ex) { return BadRequest(new { error = ex.Message }); }
    }

    [HttpPost("{id:guid}/print")]
    public async Task<IActionResult> Print(Guid id, [FromBody] PrintInvoiceRequest? request, CancellationToken ct)
    {
        // TEMPORARY: currentUser.UserId is always unset due to the broken auth middleware
        // (testbug.md #28) — fall back to the explicitly supplied user until that's fixed.
        var userId = currentUser.UserId ?? request?.PrintedByUserId;
        if (userId is null) return BadRequest(new { error = "PrintedByUserId is required while auth is unavailable" });
        try
        {
            var result = await service.PrintAsync(id, userId.Value, ct);
            return Ok(result);
        }
        catch (KeyNotFoundException) { return NotFound(); }
        catch (InvalidOperationException ex) { return BadRequest(new { error = ex.Message }); }
    }

    [HttpPost("{id:guid}/finalize")]
    public async Task<IActionResult> Finalize(Guid id, [FromBody] FinalizeInvoiceRequest? request, CancellationToken ct)
    {
        // TEMPORARY: currentUser.UserId is always unset due to the broken auth middleware
        // (testbug.md #28) — fall back to the explicitly supplied user until that's fixed.
        var userId = currentUser.UserId ?? request?.FinalizedByUserId;
        if (userId is null) return BadRequest(new { error = "FinalizedByUserId is required while auth is unavailable" });
        try
        {
            var result = await service.FinalizeAsync(id, request ?? new FinalizeInvoiceRequest(), userId.Value, ct);
            return Ok(result);
        }
        catch (KeyNotFoundException) { return NotFound(); }
        catch (InvalidOperationException ex) { return BadRequest(new { error = ex.Message }); }
    }
}