using Microsoft.AspNetCore.Mvc;
using w4c_workflows.Filters;
using w4c_workflows.Services.Quota;

namespace w4c_workflows.Controllers;

/// <summary>
/// Per-tenant workflow execution quota. <c>GET</c> returns the current period's
/// usage (drives the counter on the Workflows page); <c>POST reset</c> zeroes it
/// for the current period (admin / support). Authenticated with the tenant's
/// operator key, like every other control-plane endpoint.
/// </summary>
[ApiController]
[Route("api/workflows/quota")]
public class WorkflowQuotaController : ControllerBase
{
    private readonly WorkflowQuotaService _quota;

    public WorkflowQuotaController(WorkflowQuotaService quota)
    {
        _quota = quota;
    }

    private string TenantId => (string?)HttpContext.Items["TenantId"]
        ?? throw new InvalidOperationException("TenantId not resolved by auth middleware");

    /// <summary>Current execution usage against this tenant's monthly limit.</summary>
    [HttpGet]
    [RequireScope("read")]
    public async Task<IActionResult> Get(CancellationToken ct)
    {
        return Ok(await _quota.GetAsync(TenantId, ct));
    }

    /// <summary>Resets the current period's execution counter to zero.</summary>
    [HttpPost("reset")]
    [RequireScope("manage")]
    public async Task<IActionResult> Reset(CancellationToken ct)
    {
        return Ok(await _quota.ResetAsync(TenantId, ct));
    }
}