package tui

import (
	"fmt"

	"github.com/jroimartin/gocui"
)

// LAYOUT
func layoutSidebar(g *gocui.Gui, maxY int) error {
	if v, err := g.SetView("users", 0, 0, 20, maxY-1); err != nil {
		if err != gocui.ErrUnknownView {
			return err
		}
		v.Title = "Users"
		v.Clear()
		for _, u := range users {
			fmt.Fprintln(v, u+"\n")
		}
	}
	return nil
}

func updateUsersView(g *gocui.Gui) error {
	v, err := g.View("users")
	if err != nil {
		return err
	}

	v.Clear()
	for i, u := range users {
		if i == selectedUserIdx {
			fmt.Fprintln(v, fmt.Sprintf(">%s\n", u))
		} else {
			fmt.Fprintln(v, u+"\n")
		}
	}

	return nil
}

// KEYBINDINGS
func nextContact(g *gocui.Gui, v *gocui.View) error {
	if len(users) == 0 {
		return nil
	}
	selectedUserIdx = (selectedUserIdx + 1) % len(users)
	return updateUsersView(g)
}

func prevContact(g *gocui.Gui, v *gocui.View) error {
	if len(users) == 0 {
		return nil
	}
	selectedUserIdx = (selectedUserIdx - 1 + len(users)) % len(users)
	return updateUsersView(g)
}