@file:JvmName("ViewUtils")

package org.schabi.newpipe.ktx

import android.animation.Animator
import android.animation.AnimatorListenerAdapter
import android.animation.ArgbEvaluator
import android.animation.ValueAnimator
import android.content.res.ColorStateList
import android.util.Log
import android.view.View
import androidx.annotation.ColorInt
import androidx.annotation.FloatRange
import androidx.core.animation.addListener
import androidx.core.view.isGone
import androidx.core.view.isInvisible
import androidx.core.view.isVisible
import androidx.interpolator.view.animation.FastOutSlowInInterpolator
import org.schabi.newpipe.MainActivity

private const val TAG = "ViewUtils"

/**
 * Animate the view.
 *
 * @param enterOrExit   true to enter, false to exit
 * @param duration      how long the animation will take, in milliseconds
 * @param animationType Type of the animation
 * @param delay         how long the animation will wait to start, in milliseconds
 * @param execOnEnd     runnable that will be executed when the animation ends
 */
@JvmOverloads
fun View.animate(
    enterOrExit: Boolean,
    duration: Long,
    animationType: AnimationType = AnimationType.ALPHA,
    delay: Long = 0,
    execOnEnd: Runnable? = null
) {
    if (MainActivity.DEBUG) {
        val id = try {
            resources.getResourceEntryName(id)
        } catch (e: Exception) {
            id.toString()
        }
        val msg = String.format(
            "%8s →  [%s:%s] [%s %s:%s] execOnEnd=%s", enterOrExit,
            javaClass.simpleName, id, animationType, duration, delay, execOnEnd
        )
        Log.d(TAG, "animate(): $msg")
    }
    if (isVisible && enterOrExit) {
        if (MainActivity.DEBUG) {
            Log.d(TAG, "animate(): view was already visible > view = [$this]")
        }
        animate().setListener(null).cancel()
        isVisible = true
        alpha = 1f
        execOnEnd?.run()
        return
    } else if ((isGone || isInvisible) && !enterOrExit) {
        if (MainActivity.DEBUG) {
            Log.d(TAG, "animate(): view was already gone > view = [$this]")
        }
        animate().setListener(null).cancel()
        isGone = true
        alpha = 0f
        execOnEnd?.run()
        return
    }
    animate().setListener(null).cancel()
    isVisible = true

    when (animationType) {
        AnimationType.ALPHA -> animateAlpha(enterOrExit, duration, delay, execOnEnd)
        AnimationType.SCALE_AND_ALPHA -> animateScaleAndAlpha(enterOrExit, duration, delay, execOnEnd)
        AnimationType.LIGHT_SCALE_AND_ALPHA -> animateLightScaleAndAlpha(enterOrExit, duration, delay, execOnEnd)
        AnimationType.SLIDE_AND_ALPHA -> animateSlideAndAlpha(enterOrExit, duration, delay, execOnEnd)
        AnimationType.LIGHT_SLIDE_AND_ALPHA -> animateLightSlideAndAlpha(enterOrExit, duration, delay, execOnEnd)
    }
}

/**
 * Animate the background color of a view.
 *
 * @param duration   the duration of the animation
 * @param colorStart the background color to start with
 * @param colorEnd   the background color to end with
 */
fun View.animateBackgroundColor(duration: Long, @ColorInt colorStart: Int, @ColorInt colorEnd: Int) {
    if (MainActivity.DEBUG) {
        Log.d(
            TAG,
            "animateBackgroundColor() called with: " +
                "view = [" + this + "], duration = [" + duration + "], " +
                "colorStart = [" + colorStart + "], colorEnd = [" + colorEnd + "]"
        )
    }
    val empty = arrayOf(IntArray(0))
    val viewPropertyAnimator = ValueAnimator.ofObject(ArgbEvaluator(), colorStart, colorEnd)
    viewPropertyAnimator.interpolator = FastOutSlowInInterpolator()
    viewPropertyAnimator.duration = duration
    viewPropertyAnimator.addUpdateListener { animation: ValueAnimator ->
        backgroundTintList = ColorStateList(empty, intArrayOf(animation.animatedValue as Int))
    }
    viewPropertyAnimator.addListener(
        onCancel = { backgroundTintList = ColorStateList(empty, intArrayOf(colorEnd)) },
        onEnd = { backgroundTintList = ColorStateList(empty, intArrayOf(colorEnd)) }
    )
    viewPropertyAnimator.start()
}

fun View.animateHeight(duration: Long, targetHeight: Int): ValueAnimator {
    if (MainActivity.DEBUG) {
        Log.d(
            TAG,
            "animateHeight: duration = [" + duration + "], " +
                "from " + height + " to → " + targetHeight + " in: " + this
        )
    }
    val animator = ValueAnimator.ofFloat(height.toFloat(), targetHeight.toFloat())
    animator.interpolator = FastOutSlowInInterpolator()
    animator.duration = duration
    animator.addUpdateListener { animation: ValueAnimator ->
        val value = animation.animatedValue as Float
        layoutParams.height = value.toInt()
        requestLayout()
    }
    animator.addListener(
        onCancel = {
            layoutParams.height = targetHeight
            requestLayout()
        },
        onEnd = {
            layoutParams.height = targetHeight
            requestLayout()
        }
    )
    animator.start()
    return animator
}

fun View.animateRotation(duration: Long, targetRotation: Int) {
    if (MainActivity.DEBUG) {
        Log.d(
            TAG,
            "animateRotation: duration = [" + duration + "], " +
                "from " + rotation + " to → " + targetRotation + " in: " + this
        )
    }
    animate().setListener(null).cancel()
    animate()
        .rotation(targetRotation.toFloat()).setDuration(duration)
        .setInterpolator(FastOutSlowInInterpolator())
        .setListener(object : AnimatorListenerAdapter() {
            override fun onAnimationCancel(animation: Animator) {
                rotation = targetRotation.toFloat()
            }

            override fun onAnimationEnd(animation: Animator) {
                rotation = targetRotation.toFloat()
            }
        }).start()
}

private fun View.animateAlpha(enterOrExit: Boolean, duration: Long, delay: Long, execOnEnd: Runnable?) {
    if (enterOrExit) {
        animate().setInterpolator(FastOutSlowInInterpolator()).alpha(1f)
            .setDuration(duration).setStartDelay(delay)
            .setListener(object : AnimatorListenerAdapter() {
                override fun onAnimationEnd(animation: Animator) {
                    execOnEnd?.run()
                }
            }).start()
    } else {
        animate().setInterpolator(FastOutSlowInInterpolator()).alpha(0f)
            .setDuration(duration).setStartDelay(delay)
            .setListener(object : AnimatorListenerAdapter() {
                override fun onAnimationEnd(animation: Animator) {
                    isGone = true
                    execOnEnd?.run()
                }
            }).start()
    }
}

private fun View.animateScaleAndAlpha(enterOrExit: Boolean, duration: Long, delay: Long, execOnEnd: Runnable?) {
    if (enterOrExit) {
        scaleX = .8f
        scaleY = .8f
        animate()
            .setInterpolator(FastOutSlowInInterpolator())
            .alpha(1f).scaleX(1f).scaleY(1f)
            .setDuration(duration).setStartDelay(delay)
            .setListener(object : AnimatorListenerAdapter() {
                override fun onAnimationEnd(animation: Animator) {
                    execOnEnd?.run()
                }
            }).start()
    } else {
        scaleX = 1f
        scaleY = 1f
        animate()
            .setInterpolator(FastOutSlowInInterpolator())
            .alpha(0f).scaleX(.8f).scaleY(.8f)
            .setDuration(duration).setStartDelay(delay)
            .setListener(object : AnimatorListenerAdapter() {
                override fun onAnimationEnd(animation: Animator) {
                    isGone = true
                    execOnEnd?.run()
                }
            }).start()
    }
}

private fun View.animateLightScaleAndAlpha(enterOrExit: Boolean, duration: Long, delay: Long, execOnEnd: Runnable?) {
    if (enterOrExit) {
        alpha = .5f
        scaleX = .95f
        scaleY = .95f
        animate()
            .setInterpolator(FastOutSlowInInterpolator())
            .alpha(1f).scaleX(1f).scaleY(1f)
            .setDuration(duration).setStartDelay(delay)
            .setListener(object : AnimatorListenerAdapter() {
                override fun onAnimationEnd(animation: Animator) {
                    execOnEnd?.run()
                }
            }).start()
    } else {
        alpha = 1f
        scaleX = 1f
        scaleY = 1f
        animate()
            .setInterpolator(FastOutSlowInInterpolator())
            .alpha(0f).scaleX(.95f).scaleY(.95f)
            .setDuration(duration).setStartDelay(delay)
            .setListener(object : AnimatorListenerAdapter() {
                override fun onAnimationEnd(animation: Animator) {
                    isGone = true
                    execOnEnd?.run()
                }
            }).start()
    }
}

private fun View.animateSlideAndAlpha(enterOrExit: Boolean, duration: Long, delay: Long, execOnEnd: Runnable?) {
    if (enterOrExit) {
        translationY = -height.toFloat()
        alpha = 0f
        animate()
            .setInterpolator(FastOutSlowInInterpolator()).alpha(1f).translationY(0f)
            .setDuration(duration).setStartDelay(delay)
            .setListener(object : AnimatorListenerAdapter() {
                override fun onAnimationEnd(animation: Animator) {
                    execOnEnd?.run()
                }
            }).start()
    } else {
        animate()
            .setInterpolator(FastOutSlowInInterpolator())
            .alpha(0f).translationY(-height.toFloat())
            .setDuration(duration).setStartDelay(delay)
            .setListener(object : AnimatorListenerAdapter() {
                override fun onAnimationEnd(animation: Animator) {
                    isGone = true
                    execOnEnd?.run()
                }
            }).start()
    }
}

private fun View.animateLightSlideAndAlpha(enterOrExit: Boolean, duration: Long, delay: Long, execOnEnd: Runnable?) {
    if (enterOrExit) {
        translationY = -height / 2.0f
        alpha = 0f
        animate()
            .setInterpolator(FastOutSlowInInterpolator()).alpha(1f).translationY(0f)
            .setDuration(duration).setStartDelay(delay)
            .setListener(object : AnimatorListenerAdapter() {
                override fun onAnimationEnd(animation: Animator) {
                    execOnEnd?.run()
                }
            }).start()
    } else {
        animate().setInterpolator(FastOutSlowInInterpolator())
            .alpha(0f).translationY(-height / 2.0f)
            .setDuration(duration).setStartDelay(delay)
            .setListener(object : AnimatorListenerAdapter() {
                override fun onAnimationEnd(animation: Animator) {
                    isGone = true
                    execOnEnd?.run()
                }
            }).start()
    }
}

@JvmOverloads
fun View.slideUp(
    duration: Long,
    delay: Long = 0L,
    @FloatRange(from = 0.0, to = 1.0) translationPercent: Float = 1.0F,
    execOnEnd: Runnable? = null
) {
    val newTranslationY = (resources.displayMetrics.heightPixels * translationPercent).toInt()
    animate().setListener(null).cancel()
    alpha = 0f
    translationY = newTranslationY.toFloat()
    isVisible = true
    animate()
        .alpha(1f)
        .translationY(0f)
        .setStartDelay(delay)
        .setDuration(duration)
        .setInterpolator(FastOutSlowInInterpolator())
        .setListener(object : AnimatorListenerAdapter() {
            override fun onAnimationEnd(animation: Animator) {
                execOnEnd?.run()
            }
        })
        .start()
}

/**
 * Instead of hiding normally using [animate], which would make
 * the recycler view unable to capture touches after being hidden, this just animates the alpha
 * value setting it to `0.0` after `200` milliseconds.
 */
fun View.animateHideRecyclerViewAllowingScrolling() {
    // not hiding normally because the view needs to still capture touches and allow scroll
    animate().alpha(0.0f).setDuration(200).start()
}

enum class AnimationType {
    ALPHA, SCALE_AND_ALPHA, LIGHT_SCALE_AND_ALPHA, SLIDE_AND_ALPHA, LIGHT_SLIDE_AND_ALPHA
}