package main

import (
	"citrons.xyz/talk/client/window"
)

func (a *application) removeFromHistory(location window.Location) {
	for i := len(a.windowHist) - 1; i >= 0; i-- {
		if a.windowHist[i] != location {
			continue
		}
		if i < len(a.windowHist) - 1 {
			a.windowHist = append(a.windowHist[:i], a.windowHist[i + 1:]...)
		} else {
			a.windowHist = a.windowHist[:i]
		}
		break
	}
}

func (a *application) traverseHistory(direction int) {
	var i int
	for i = 0; i < len(a.windowHist); i++ {
		if a.windowHist[i] == a.currentWindow {
			break
		}
	}
	i += direction
	if i >= 0 && i < len(a.windowHist) {
		a.currentWindow = a.windowHist[i]
	}
}

func (a *application) goTo(location window.Location) {
	a.removeFromHistory(location)
	a.windowHist = append(a.windowHist, location)
	a.currentWindow = location
}