package tui

import (
	"github.com/jroimartin/gocui"
)

var selectedUserIdx int

func keybindings(g *gocui.Gui) error {
	if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
		return err
	}
	if err := g.SetKeybinding("input", gocui.KeyEnter, gocui.ModNone, sendMessage); err != nil {
		return err
	}
	if err := g.SetKeybinding("chat", gocui.KeyArrowUp, gocui.ModNone, cursorUp); err != nil {
		return err
	}
	if err := g.SetKeybinding("chat", gocui.KeyArrowDown, gocui.ModNone, cursorDown); err != nil {
		return err
	}
	if err := g.SetKeybinding("", gocui.KeyTab, gocui.ModNone, nextContact); err != nil {
		return err
	}
	if err := g.SetKeybinding("", gocui.KeySpace, gocui.ModNone, prevContact); err != nil {
		return err
	}
	return nil
}

func insertNewline(g *gocui.Gui, v *gocui.View) error {
	v.EditNewLine()
	return nil
}

func quit(g *gocui.Gui, v *gocui.View) error {
	return gocui.ErrQuit
}

func cursorDown(g *gocui.Gui, v *gocui.View) error {
	if v != nil {
		cx, cy := v.Cursor()
		if err := v.SetCursor(cx, cy+1); err != nil {
			ox, oy := v.Origin()
			if err := v.SetOrigin(ox, oy+1); err != nil {
				return err
			}
		}
	}
	return nil
}

func cursorUp(g *gocui.Gui, v *gocui.View) error {
	if v != nil {
		ox, oy := v.Origin()
		cx, cy := v.Cursor()
		if err := v.SetCursor(cx, cy-1); err != nil && oy > 0 {
			if err := v.SetOrigin(ox, oy-1); err != nil {
				return err
			}
		}
	}
	return nil
}