package tui

import (
	"fmt"

	"github.com/jroimartin/gocui"
)

var selectedUserIdx int = 0

// 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()
		updateUsersView(g)
	}
	return nil
}

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

	v.Clear()

	messages = nil

	// TODO: If no contacts then error, create some add contacts window or hello to WhspBrd
	LoadMessages(users[selectedUserIdx])

	// TODO: Render profile image of users and change colors of each user maybe?
	for i, u := range users {

		// Change Selected User In The TUI Window
		if i == selectedUserIdx {
			fmt.Fprintf(v, "%s%s%s\n", Colors.Background(Colors.Base06), u, Colors.Reset)
			_, y := v.Size()
			if i == 0 {
				v.SetOrigin(0, 0)
			} else {
				v.SetOrigin(0, i-y+1)
			}

		} else {
			fmt.Fprintln(v, u)
		}
	}
	return nil
}

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

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