Signal-Android/app/src/main/java/org/thoughtcrime/securesms/scribbles/TextEntryDialogFragment.kt

package org.thoughtcrime.securesms.scribbles

import android.animation.Animator
import android.animation.ObjectAnimator
import android.content.DialogInterface
import android.graphics.Color
import android.os.Bundle
import android.view.View
import android.view.ViewGroup
import android.widget.ImageView
import androidx.appcompat.content.res.AppCompatResources
import androidx.appcompat.widget.AppCompatSeekBar
import androidx.fragment.app.FragmentManager
import com.airbnb.lottie.SimpleColorFilter
import org.signal.imageeditor.core.HiddenEditText
import org.signal.imageeditor.core.model.EditorElement
import org.signal.imageeditor.core.renderers.MultiLineTextRenderer
import org.thoughtcrime.securesms.R
import org.thoughtcrime.securesms.components.KeyboardEntryDialogFragment
import org.thoughtcrime.securesms.scribbles.HSVColorSlider.getColor
import org.thoughtcrime.securesms.scribbles.HSVColorSlider.setUpForColor
import org.thoughtcrime.securesms.util.ViewUtil
import org.thoughtcrime.securesms.util.fragments.requireListener

class TextEntryDialogFragment : KeyboardEntryDialogFragment(R.layout.v2_media_image_editor_text_entry_fragment) {

  private lateinit var hiddenTextEntry: HiddenEditText
  private lateinit var controller: Controller

  private var colorIndicatorAlphaAnimator: Animator? = null

  override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    controller = requireListener()

    hiddenTextEntry = HiddenEditText(requireContext())
    if (!ImageEditorFragment.CAN_RENDER_EMOJI) {
      hiddenTextEntry.addTextFilter(RemoveEmojiTextFilter())
    }
    (view as ViewGroup).addView(hiddenTextEntry)

    view.setOnClickListener {
      dismissAllowingStateLoss()
    }

    val element: EditorElement = requireNotNull(requireArguments().getParcelable("element"))
    val incognito = requireArguments().getBoolean("incognito")
    val selectAll = requireArguments().getBoolean("selectAll")

    hiddenTextEntry.setCurrentTextEditorElement(element)
    hiddenTextEntry.setIncognitoKeyboardEnabled(incognito)

    if (selectAll) {
      hiddenTextEntry.selectAll()
    }

    hiddenTextEntry.setOnEditOrSelectionChange { editorElement, textRenderer ->
      controller.zoomToFitText(editorElement, textRenderer)
    }

    hiddenTextEntry.setOnEndEdit {
      dismissAllowingStateLoss()
    }

    ViewUtil.focusAndShowKeyboard(hiddenTextEntry)

    val slider: AppCompatSeekBar = view.findViewById(R.id.image_editor_hud_draw_color_bar)
    val colorIndicator: ImageView = view.findViewById(R.id.image_editor_hud_color_indicator)
    val styleToggle: ImageView = view.findViewById(R.id.image_editor_hud_text_style_button)

    colorIndicator.background = AppCompatResources.getDrawable(requireContext(), R.drawable.ic_color_preview)

    slider.setUpForColor(
      Color.WHITE,
      {
        colorIndicator.drawable.colorFilter = SimpleColorFilter(slider.getColor())
        colorIndicator.translationX = (slider.thumb.bounds.left.toFloat() + ViewUtil.dpToPx(16))
        controller.onTextColorChange(slider.progress)
      },
      {
        colorIndicatorAlphaAnimator?.end()
        colorIndicatorAlphaAnimator = ObjectAnimator.ofFloat(colorIndicator, "alpha", colorIndicator.alpha, 1f)
        colorIndicatorAlphaAnimator?.duration = 150L
        colorIndicatorAlphaAnimator?.start()
      },
      {
        colorIndicatorAlphaAnimator?.end()
        colorIndicatorAlphaAnimator = ObjectAnimator.ofFloat(colorIndicator, "alpha", colorIndicator.alpha, 0f)
        colorIndicatorAlphaAnimator?.duration = 150L
        colorIndicatorAlphaAnimator?.start()
      }
    )

    slider.progress = requireArguments().getInt("color_index")

    styleToggle.setOnClickListener {
      (element.renderer as MultiLineTextRenderer).nextMode()
    }
  }

  override fun onDismiss(dialog: DialogInterface) {
    controller.onTextEntryDialogDismissed(!hiddenTextEntry.text.isNullOrEmpty())
  }

  interface Controller {
    fun onTextEntryDialogDismissed(hasText: Boolean)
    fun zoomToFitText(editorElement: EditorElement, textRenderer: MultiLineTextRenderer)
    fun onTextColorChange(colorIndex: Int)
  }

  companion object {
    fun show(
      fragmentManager: FragmentManager,
      editorElement: EditorElement,
      isIncognitoEnabled: Boolean,
      selectAll: Boolean,
      colorIndex: Int
    ) {
      val args = Bundle().apply {
        putParcelable("element", editorElement)
        putBoolean("incognito", isIncognitoEnabled)
        putBoolean("selectAll", selectAll)
        putInt("color_index", colorIndex)
      }

      TextEntryDialogFragment().apply {
        arguments = args
        show(fragmentManager, "text_entry")
      }
    }
  }
}