# PinCodeViewDelegate.kt

    /*
     * The MIT License
     *
     * Original work sponsored and donated by The Danish Health Data Authority (http://www.sundhedsdatastyrelsen.dk)
     *
     * Copyright (C) 2021 The Danish Health Data Authority (http://www.sundhedsdatastyrelsen.dk)
     *
     *
     * Permission is hereby granted, free of charge, to any person obtaining a copy of
     * this software and associated documentation files (the "Software"), to deal in
     * the Software without restriction, including without limitation the rights to
     * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
     * of the Software, and to permit persons to whom the Software is furnished to do
     * so, subject to the following conditions:
     *
     *
     * The above copyright notice and this permission notice shall be included in all
     * copies or substantial portions of the Software.
     *
     *
     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     * SOFTWARE.
     */

    package dk.nsp.mingraviditet.ui.widgets

    import android.view.animation.Animation
    import android.view.animation.AnimationUtils
    import dk.nsp.mingraviditet.R
    import dk.nsp.mingraviditet.databinding.ViewPinInputFieldsBinding
    import dk.nsp.mingraviditet.util.extensions.bindingadapters.setTextModel
    import dk.nsp.util.textmodel.TextModel

    class PinCodeInputDelegate(
        private val binding: ViewPinInputFieldsBinding
    ) {

        private val animationDelay = 100L

        private val pinCodeBoxes = listOf(
            binding.pinCodeField1,
            binding.pinCodeField2,
            binding.pinCodeField3,
            binding.pinCodeField4
        )

        init {
            updatePins("")
        }

        fun updatePins(pin: String) {
            pinCodeBoxes.forEachIndexed { index, pinField ->
                when {
                    index < pin.length -> pinField.updateForState(PinState.Filled, true)
                    index == pin.length -> pinField.updateForState(PinState.Highlighted, true)
                    else -> pinField.updateForState(PinState.Default, true)
                }
            }
        }

        fun hideAndStartLoading() {
            binding.errorMessage.setTextModel(null)
            pinCodeBoxes.forEach {
                if (it.getState() != PinState.Filled) {
                    it.updateForState(PinState.Filled, true)
                }
            }

            pinCodeBoxes.forEachIndexed { index, pinField ->
                pinField.updateForState(
                    PinState.Loading,
                    true,
                    index * animationDelay
                )
            }
        }

        fun animateForError(errorTextModel: TextModel?, endAction: () -> Unit) {
            pinCodeBoxes.forEach { pinField ->
                pinField.updateForState(PinState.Error, true)
            }
            val shake = AnimationUtils.loadAnimation(binding.root.context, R.anim.shake)
            shake.setAnimationListener(object : Animation.AnimationListener {
                override fun onAnimationRepeat(p0: Animation?) {}

                override fun onAnimationStart(p0: Animation?) {}

                override fun onAnimationEnd(p0: Animation?) {
                    updatePins("")
                    binding.errorMessage.setTextModel(errorTextModel)
                    endAction()
                }
            })
            shake.duration = PinInputView.transitionDurationMs.toLong()

            binding.boxContainerWrapper.startAnimation(shake)
        }
    }