package agent

import (
	"context"
	"fmt"

	mcpv1 "git.wntrmute.dev/mc/mcp/gen/mcp/v1"
	"google.golang.org/protobuf/types/known/timestamppb"
)

// ListProxyRoutes queries mc-proxy for its current status and routes.
func (a *Agent) ListProxyRoutes(ctx context.Context, _ *mcpv1.ListProxyRoutesRequest) (*mcpv1.ListProxyRoutesResponse, error) {
	a.Logger.Debug("ListProxyRoutes called")

	status, err := a.Proxy.GetStatus(ctx)
	if err != nil {
		return nil, fmt.Errorf("get mc-proxy status: %w", err)
	}

	resp := &mcpv1.ListProxyRoutesResponse{
		Version:          status.Version,
		TotalConnections: status.TotalConnections,
	}
	if !status.StartedAt.IsZero() {
		resp.StartedAt = timestamppb.New(status.StartedAt)
	}

	for _, ls := range status.Listeners {
		listener := &mcpv1.ProxyListenerInfo{
			Addr:              ls.Addr,
			RouteCount:        int32(ls.RouteCount), //nolint:gosec // bounded
			ActiveConnections: ls.ActiveConnections,
		}
		for _, r := range ls.Routes {
			listener.Routes = append(listener.Routes, &mcpv1.ProxyRouteInfo{
				Hostname:   r.Hostname,
				Backend:    r.Backend,
				Mode:       r.Mode,
				BackendTls: r.BackendTLS,
			})
		}
		resp.Listeners = append(resp.Listeners, listener)
	}

	return resp, nil
}