package console

import (
	"errors"
	"fmt"
	"log"
	"net/http"

	"github.com/carlosframework/platform/internal/hostclaim"
	"github.com/carlosframework/platform/internal/hostops"
	"github.com/carlosframework/platform/internal/release"
)

const claimResponseUnavailable = "This operation is temporarily unavailable. Try again shortly."

func claimResponseRefusal(err error) *doorRefusal {
	log.Printf("console: claim request refused: %v", err)
	// No box has room (region HA spec 2 §7, H27): every create door's 503.
	var full *noCapacityError
	if errors.As(err, &full) {
		return &doorRefusal{http.StatusServiceUnavailable, noCapacityRefusal(full.Region)}
	}
	if errors.Is(err, hostops.ErrPending) || errors.Is(err, hostclaim.ErrConflict) || errors.Is(err, hostclaim.ErrWrongState) || errors.Is(err, release.ErrCASConflict) {
		return &doorRefusal{http.StatusConflict, claimRetireBusyMsg}
	}
	return &doorRefusal{http.StatusServiceUnavailable, claimResponseUnavailable}
}

func writeClaimResponseError(w http.ResponseWriter, err error) {
	ref := claimResponseRefusal(err)
	w.Header().Set("Retry-After", "2")
	setNoCapacityRetryAfter(w, ref)
	jsonError(w, ref.Status, ref.Msg)
}

func (s *Server) renderClaimAccepted(w http.ResponseWriter, r *http.Request, subject, operation, phase string) {
	w.Header().Set("Retry-After", "2")
	s.renderMessage(w, r, http.StatusAccepted, "Operation accepted", fmt.Sprintf("Operation %s for %s is %s. It is still in progress. Check the app's status before trying again.", operation, subject, phase))
}