package versions

import (
	"context"
	"fmt"
	"strings"
	"time"
)

// The tools' descriptions.
const (
	FloorAgainDescription = "Ask the floor of one name again now, by hand (design 51 *The floor*): the seat's versions, the seat git's " +
		"git.tags and the indexer's indexer_requirements, as the builder asks them by itself when a silent source says something. " +
		"Answers which sources were silent and whether the floor is now known. A name the builder's versions already hold needs no floor: " +
		"refused, saying so. A hand act."
)

// Acts are the builder's hand acts on its versions, answered by its program (the tools bundle writes them to reasks).
type Acts struct {
	Numberer *Numberer
	// Reconsider looks at every module again, so a claim asks a name's floor.
	Reconsider func(ctx context.Context)
	// Republish queues the reserved versions builder_publish_again names (design 47 G §588): the versions it queued.
	Republish func(ctx context.Context, module, version string) ([]string, error)
	// DropOldForm drops a retired node from the old form's count by hand (builder_old_form): its answer, or why not.
	DropOldForm func(ctx context.Context, node, by, why string, at time.Time) (string, error)
	// DropReserved drops a module's reservation of one MAJOR.MINOR by hand (builder_reserved_drop): its answer, or why not.
	DropReserved func(ctx context.Context, module, series, by, why string, at time.Time) (string, error)
}

// FloorAgain is builder_floor_again of name: the floor counts only for a name the versions hold nothing of.
func (a Acts) FloorAgain(ctx context.Context, name string) (string, error) {
	entries, err := a.Numberer.Versions.Of(ctx, name)
	if err != nil {
		return "", err
	}
	if len(entries) > 0 {
		return "", fmt.Errorf("%s holds %d versions: its floor counts only for its first number, so nothing is asked", name, len(entries))
	}
	answer := name + " waits on no floor in this builder: the floor is asked at its next claim"
	if a.Numberer.Waits != nil {
		for _, w := range a.Numberer.Waits.Waiting() {
			if w.Name == name {
				answer = fmt.Sprintf("the floor of %s is asked again (%s were silent)", name, strings.Join(w.Silent, ", "))
			}
		}
		a.Numberer.Waits.Wake(WakeByHand, "", "", name)
	}
	a.Reconsider(ctx)
	return answer + "; builder_versions shows its version once numbered", nil
}