package ca.allanwang.kau.kpref

import android.os.Bundle
import android.support.annotation.StringRes
import android.support.constraint.ConstraintLayout
import android.support.v7.app.AppCompatActivity
import android.support.v7.widget.RecyclerView
import android.support.v7.widget.Toolbar
import android.view.View
import android.view.animation.Animation
import android.view.animation.AnimationUtils
import android.widget.FrameLayout
import android.widget.ViewAnimator
import ca.allanwang.kau.R
import ca.allanwang.kau.kpref.items.KPrefItemCore
import ca.allanwang.kau.utils.bindView
import ca.allanwang.kau.utils.resolveColor
import ca.allanwang.kau.utils.statusBarColor
import ca.allanwang.kau.utils.string
import ca.allanwang.kau.widgets.TextSlider
import ca.allanwang.kau.views.RippleCanvas
import com.mikepenz.fastadapter.commons.adapters.FastItemAdapter

abstract class KPrefActivity : AppCompatActivity(), KPrefActivityContract {

    val adapter: FastItemAdapter<KPrefItemCore>
        @Suppress("UNCHECKED_CAST")
        get() = recycler.adapter as FastItemAdapter<KPrefItemCore>
    val recycler: RecyclerView
        get() = prefHolder.currentView as RecyclerView
    val container: ConstraintLayout by bindView(R.id.kau_container)
    val bgCanvas: RippleCanvas by bindView(R.id.kau_ripple)
    val toolbarCanvas: RippleCanvas by bindView(R.id.kau_toolbar_ripple)
    val toolbar: Toolbar by bindView(R.id.kau_toolbar)
    val toolbarTitle: TextSlider by bindView(R.id.kau_toolbar_text)
    val prefHolder: ViewAnimator by bindView(R.id.kau_holder)
    private lateinit var globalOptions: GlobalOptions
    var animate: Boolean = true
        set(value) {
            field = value
            toolbarTitle.animationType = if (value) TextSlider.ANIMATION_SLIDE_HORIZONTAL else TextSlider.ANIMATION_NONE
        }

    private val SLIDE_IN_LEFT_ITEMS: Animation by lazy { AnimationUtils.loadAnimation(this, R.anim.kau_slide_in_left) }
    private val SLIDE_IN_RIGHT_ITEMS: Animation by lazy { AnimationUtils.loadAnimation(this, R.anim.kau_slide_in_right) }
    private val SLIDE_OUT_LEFT_ITEMS: Animation by lazy { AnimationUtils.loadAnimation(this, R.anim.kau_slide_out_left) }
    private val SLIDE_OUT_RIGHT_ITEMS: Animation by lazy { AnimationUtils.loadAnimation(this, R.anim.kau_slide_out_right) }

    /**
     * Core attribute builder that is consistent throughout all items
     * Leave blank to use defaults
     */
    abstract fun kPrefCoreAttributes(): CoreAttributeContract.() -> Unit

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        //setup layout
        setContentView(R.layout.kau_activity_kpref)
        setSupportActionBar(toolbar)
        if (supportActionBar != null)
            with(supportActionBar!!) {
                setDisplayHomeAsUpEnabled(true)
                setDisplayShowHomeEnabled(true)
                toolbar.setNavigationOnClickListener { onBackPressed() }
                setDisplayShowTitleEnabled(false)
            }
        window.decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_LAYOUT_STABLE or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
        statusBarColor = 0x30000000
        toolbarCanvas.set(resolveColor(R.attr.colorPrimary))
        bgCanvas.set(resolveColor(android.R.attr.colorBackground))
        prefHolder.animateFirstView = false
        //setup prefs
        val core = CoreAttributeBuilder()
        val builder = kPrefCoreAttributes()
        core.builder()
        globalOptions = GlobalOptions(core, this)
        showNextPrefs(R.string.kau_settings, onCreateKPrefs(savedInstanceState))
    }

    override fun onPostCreate(savedInstanceState: Bundle?) {
        super.onPostCreate(savedInstanceState)
    }

    override fun showNextPrefs(@StringRes toolbarTitleRes: Int, builder: KPrefAdapterBuilder.() -> Unit) {
        val rv = RecyclerView(this).apply {
            layoutParams = FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT, FrameLayout.LayoutParams.MATCH_PARENT)
            setKPrefAdapter(globalOptions, builder)
        }
        with(prefHolder) {
            inAnimation = if (animate) SLIDE_IN_RIGHT_ITEMS else null
            outAnimation = if (animate) SLIDE_OUT_LEFT_ITEMS else null
            addView(rv)
            showNext()
        }
        toolbarTitle.setNextText(string(toolbarTitleRes))
    }

    override fun showPrevPrefs() {
        val current = prefHolder.currentView
        with(prefHolder) {
            inAnimation = if (animate) SLIDE_IN_LEFT_ITEMS else null
            outAnimation = if (animate) SLIDE_OUT_RIGHT_ITEMS else null
            showPrevious()
            removeView(current)
            adapter.notifyAdapterDataSetChanged()
        }
        toolbarTitle.setPrevText()
    }

    fun reload(vararg index: Int) {
        if (index.isEmpty()) adapter.notifyAdapterDataSetChanged()
        else index.forEach { adapter.notifyItemChanged(it) }
    }

    override fun reloadByTitle(@StringRes vararg title: Int) {
        if (title.isEmpty()) return
        adapter.adapterItems.forEachIndexed { index, item ->
            if (title.any { item.core.titleRes == it })
                adapter.notifyItemChanged(index)
        }
    }

    abstract fun onCreateKPrefs(savedInstanceState: Bundle?): KPrefAdapterBuilder.() -> Unit

    override fun onBackPressed() {
        if (!backPress()) super.onBackPressed()
    }

    fun backPress(): Boolean {
        if (!toolbarTitle.isRoot) {
            showPrevPrefs()
            return true
        }
        return false
    }
}