package com.pitchedapps.frost

import android.graphics.drawable.ColorDrawable
import android.graphics.drawable.Drawable
import android.os.Bundle
import android.os.Handler
import android.support.v4.widget.SwipeRefreshLayout
import android.support.v7.widget.AppCompatTextView
import android.support.v7.widget.Toolbar
import android.widget.ImageView
import ca.allanwang.kau.utils.*
import com.bumptech.glide.Glide
import com.bumptech.glide.load.DataSource
import com.bumptech.glide.load.engine.GlideException
import com.bumptech.glide.request.RequestListener
import com.bumptech.glide.request.target.Target
import com.pitchedapps.frost.dbflow.CookieModel
import com.pitchedapps.frost.dbflow.fetchUsername
import com.pitchedapps.frost.dbflow.loadFbCookiesAsync
import com.pitchedapps.frost.dbflow.saveFbCookie
import com.pitchedapps.frost.facebook.FACEBOOK_COM
import com.pitchedapps.frost.facebook.FbTab
import com.pitchedapps.frost.facebook.PROFILE_PICTURE_URL
import com.pitchedapps.frost.utils.L
import com.pitchedapps.frost.utils.Prefs
import com.pitchedapps.frost.utils.launchNewTask
import com.pitchedapps.frost.utils.setFrostColors
import com.pitchedapps.frost.web.LoginWebView
import io.reactivex.Observable
import io.reactivex.android.schedulers.AndroidSchedulers
import io.reactivex.functions.BiFunction
import io.reactivex.internal.operators.single.SingleToObservable
import io.reactivex.subjects.BehaviorSubject
import io.reactivex.subjects.SingleSubject
import org.jsoup.Jsoup
import kotlin.concurrent.thread


/**
 * Created by Allan Wang on 2017-06-01.
 */
class LoginActivity : BaseActivity() {

    val toolbar: Toolbar by bindView(R.id.toolbar)
    val web: LoginWebView by bindView(R.id.login_webview)
    val swipeRefresh: SwipeRefreshLayout by bindView(R.id.swipe_refresh)
    val textview: AppCompatTextView by bindView(R.id.textview)
    val profile: ImageView by bindView(R.id.profile)

    val loginObservable = SingleSubject.create<CookieModel>()!!
    val progressObservable = BehaviorSubject.create<Int>()!!
    val profileObservable = SingleSubject.create<Boolean>()!!
    val usernameObservable = SingleSubject.create<String>()!!

    // Helper to set and enable swipeRefresh
    var refresh: Boolean
        get() = swipeRefresh.isRefreshing
        set(value) {
            if (value) swipeRefresh.isEnabled = true
            swipeRefresh.isRefreshing = value
            if (!value) swipeRefresh.isEnabled = false
        }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_login)
        setSupportActionBar(toolbar)
        setTitle(R.string.login)
        setFrostColors(toolbar)
        web.loginObservable = loginObservable
        web.progressObservable = progressObservable
        loginObservable.observeOn(AndroidSchedulers.mainThread()).subscribe {
            cookie ->
            web.fadeOut(onFinish = {
                profile.fadeIn()
                textview.fadeIn()
                loadInfo(cookie)
            })
        }
        progressObservable.observeOn(AndroidSchedulers.mainThread()).subscribe { refresh = it != 100 }
        web.loadLogin()
    }

    fun loadInfo(cookie: CookieModel) {
        refresh = true
        Observable.zip(SingleToObservable(profileObservable), SingleToObservable(usernameObservable),
                BiFunction<Boolean, String, Pair<Boolean, String>> { foundImage, name -> Pair(foundImage, name) })
                .observeOn(AndroidSchedulers.mainThread()).subscribe {
            (foundImage, name) ->
            refresh = false
            if (!foundImage) L.e("Could not get profile photo; Invalid userId?\n\t$cookie")
            textview.setTextWithFade(String.format(getString(R.string.welcome), name), duration = 500)
            /*
             * The user may have logged into an account that is already in the database
             * We will let the db handle duplicates and load it now after the new account has been saved
             */
            loadFbCookiesAsync {
                cookies ->
                Handler().postDelayed({
                    launchNewTask(MainActivity::class.java, ArrayList(cookies), clearStack = true)
                }, 1000)
            }
        }
        loadProfile(cookie.id)
        loadUsername(cookie)
    }


    fun loadProfile(id: Long) {
        Glide.with(this@LoginActivity).load(PROFILE_PICTURE_URL(id)).listener(object : RequestListener<Drawable> {
            override fun onResourceReady(resource: Drawable?, model: Any?, target: Target<Drawable>?, dataSource: DataSource?, isFirstResource: Boolean): Boolean {
                profileObservable.onSuccess(true)
                return false
            }

            override fun onLoadFailed(e: GlideException?, model: Any?, target: Target<Drawable>?, isFirstResource: Boolean): Boolean {
                profileObservable.onSuccess(false)
                return false
            }
        }).into(profile)
    }

    fun loadUsername(cookie: CookieModel) {
        cookie.fetchUsername {
            usernameObservable.onSuccess(it)
        }
    }
}