package main

import (
  . "lcthw.dev/go/ttarpit/debug"
  "fmt"
  "github.com/gdamore/tcell/v2"
  "github.com/gdamore/tcell/v2/encoding"
  "lcthw.dev/go/ttarpit/game"
)

type UI struct {
  Screen tcell.Screen
}

func (ui *UI) DrawText(x int, y int, text string) {
  for i, cell := range text {
    ui.Screen.SetContent(x+i, y, cell, nil, tcell.StyleDefault)
  }
}

func (ui *UI) Render(data *game.Game) {
  ui.Screen.Clear()
 
  ui.DrawText(0, 0, "Welcome to Turing's Tarpit")
  ui.DrawText(0, 1, fmt.Sprintf("HP: %d", data.HP))
  ui.DrawText(0, 2, fmt.Sprintf("Errors: %d", data.Errors))

  ui.Screen.Show()
}

func (ui *UI) HandleKeys(ev *tcell.EventKey) bool {
  switch ev.Key() {
  case tcell.KeyEscape:
    return false
  }

  switch ev.Rune() {
  case 'q':
    return false
  }

  return true
}

func (ui *UI) HandleEvents() bool {
  switch ev := ui.Screen.PollEvent().(type) {
  case *tcell.EventResize:
    ui.Screen.Sync()
  case *tcell.EventKey:
    return ui.HandleKeys(ev)
  }

  return true
}

func (ui *UI) Exit() {
  ui.Screen.Fini()
}


func MakeUI() *UI {
  var err error
  encoding.Register()

  ui := new(UI)

  ui.Screen, err = tcell.NewScreen()
  if err != nil { Log.Fatal(err) }

  err = ui.Screen.Init()
  if err != nil { Log.Fatal(err) }

  return ui
}