package moves

import "fmt"

// The operator sentences two packages speak (preflight L12): the carlos move
// CLI (package main) and the app's member stream (internal/host). One
// template each, so the copy record names this file for them. A sentence
// only one of them speaks stays in that file.

// MoveStartingLine is M-C1.
func MoveStartingLine(host, from, to string) string {
	return fmt.Sprintf("Moving %s from %s to %s.", host, from, to)
}

// CutStartingLine is M-C5; estimate is CutBudgetText's.
func CutStartingLine(to, host, estimate string) string {
	return fmt.Sprintf("%s is ready. Starting the cut. %s will be offline for about %s.", to, host, estimate)
}

// FlippedLine is M-C6.
func FlippedLine(from, to string) string {
	return fmt.Sprintf("Stopped in %s. Starting in %s.", from, to)
}

// MovedLine is M-C7.
func MovedLine(host, to string, offlineSeconds int) string {
	return fmt.Sprintf("Moved. %s is served from %s. It was offline for %d seconds.", host, to, offlineSeconds)
}

// MovingBackLine is M-C8; reason is a recorded rollback sentence.
func MovingBackLine(to, host, reason, from string) string {
	return fmt.Sprintf("%s could not start %s: %s. Moving it back to %s.", to, host, reason, from)
}

// MovedBackLine is M-C9.
func MovedBackLine(host, from string) string {
	return fmt.Sprintf("%s is back in %s and serving. Nothing was lost.", host, from)
}

// StuckMemberLine is what members read for a stuck move (MV-N380): M-C11
// without the operator's command.
func StuckMemberLine(host, to, from string) string {
	return fmt.Sprintf("%s could not start in %s or in %s. It is offline. An operator has been paged.", host, to, from)
}

// CutBudgetText renders a cut budget for M-C5.
func CutBudgetText(seconds int) string {
	if seconds < 90 {
		return fmt.Sprintf("%d seconds", seconds)
	}
	return fmt.Sprintf("%d minutes", (seconds+59)/60)
}

// HomeRegionText names the home region where only its code, "", is known
// (MV-N381): a box knows the deployment's home only as the record's empty
// region.
const HomeRegionText = "the home region"

// RegionText is a region as a sentence names it: its code, or
// HomeRegionText for the home's "".
func RegionText(code string) string {
	if code == "" {
		return HomeRegionText
	}
	return code
}