mihon/app/src/main/java/exh/ui/lock/FingerLockPreference.kt

package exh.ui.lock

import android.annotation.SuppressLint
import android.annotation.TargetApi
import android.content.Context
import android.os.Build
import android.util.AttributeSet
import android.view.Gravity
import android.view.ViewGroup
import android.widget.TextView
import androidx.appcompat.widget.LinearLayoutCompat
import androidx.preference.SwitchPreferenceCompat
import com.afollestad.materialdialogs.MaterialDialog
import com.github.ajalt.reprint.core.AuthenticationResult
import com.github.ajalt.reprint.core.Reprint
import com.github.ajalt.reprint.rxjava.RxReprint
import com.mattprecious.swirl.SwirlView
import eu.kanade.tachiyomi.data.preference.PreferencesHelper
import eu.kanade.tachiyomi.data.preference.getOrDefault
import eu.kanade.tachiyomi.util.preference.onChange
import exh.util.dpToPx
import rx.android.schedulers.AndroidSchedulers
import uy.kohesive.injekt.injectLazy

class FingerLockPreference @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null) :
        SwitchPreferenceCompat(context, attrs) {

    val prefs: PreferencesHelper by injectLazy()

    val fingerprintSupported
        get() = Build.VERSION.SDK_INT >= Build.VERSION_CODES.M
                && Reprint.isHardwarePresent()
                && Reprint.hasFingerprintRegistered()

    val useFingerprint
        get() = fingerprintSupported
                && prefs.eh_lockUseFingerprint().getOrDefault()

    @SuppressLint("NewApi")
    override fun onAttached() {
        super.onAttached()
        if(fingerprintSupported) {
            updateSummary()
            onChange {
                if(it as Boolean)
                    tryChange()
                else
                    prefs.eh_lockUseFingerprint().set(false)
                !it
            }
        } else {
            title = "Fingerprint unsupported"
            shouldDisableView = true
            summary = if(!Reprint.hasFingerprintRegistered())
                "No fingerprints enrolled!"
            else
                "Fingerprint unlock is unsupported on this device!"
            onChange { false }
        }
    }

    private fun updateSummary() {
        isChecked = useFingerprint
        title = if(isChecked)
            "Fingerprint enabled"
        else
            "Fingerprint disabled"
    }

    @TargetApi(Build.VERSION_CODES.M)
    fun tryChange() {
        val statusTextView = TextView(context).apply {
            text = "Please touch the fingerprint sensor"
            val size = ViewGroup.LayoutParams.WRAP_CONTENT
            layoutParams = (layoutParams ?: ViewGroup.LayoutParams(
                    size, size
            )).apply {
                width = size
                height = size
                setPadding(0, 0, dpToPx(context, 8), 0)
            }
        }
        val iconView = SwirlView(context).apply {
            val size = dpToPx(context, 30)
            layoutParams = (layoutParams ?: ViewGroup.LayoutParams(
                    size, size
            )).apply {
                width = size
                height = size
            }
            setState(SwirlView.State.OFF, false)
        }
        val linearLayout = LinearLayoutCompat(context).apply {
            orientation = LinearLayoutCompat.HORIZONTAL
            gravity = Gravity.CENTER_VERTICAL
            val size = LinearLayoutCompat.LayoutParams.WRAP_CONTENT
            layoutParams = (layoutParams ?: LinearLayoutCompat.LayoutParams(
                    size, size
            )).apply {
                width = size
                height = size
                val pSize = dpToPx(context, 24)
                setPadding(pSize, 0, pSize, 0)
            }

            addView(statusTextView)
            addView(iconView)
        }
        val dialog = MaterialDialog.Builder(context)
                .title("Fingerprint verification")
                .customView(linearLayout, false)
                .negativeText("Cancel")
                .autoDismiss(true)
                .cancelable(true)
                .canceledOnTouchOutside(true)
                .show()
        iconView.setState(SwirlView.State.ON)
        val subscription = RxReprint.authenticate()
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe { result ->
                    when (result.status) {
                        AuthenticationResult.Status.SUCCESS -> {
                            iconView.setState(SwirlView.State.ON)
                            prefs.eh_lockUseFingerprint().set(true)
                            dialog.dismiss()
                            updateSummary()
                        }
                        AuthenticationResult.Status.NONFATAL_FAILURE -> {
                            iconView.setState(SwirlView.State.ERROR)
                            statusTextView.text = result.errorMessage
                        }
                        AuthenticationResult.Status.FATAL_FAILURE, null -> {
                            MaterialDialog.Builder(context)
                                    .title("Fingerprint verification failed!")
                                    .content(result.errorMessage)
                                    .positiveText("Ok")
                                    .autoDismiss(true)
                                    .cancelable(true)
                                    .canceledOnTouchOutside(false)
                                    .show()
                            dialog.dismiss()
                        }
                    }
                }
        dialog.setOnDismissListener {
            subscription.unsubscribe()
        }
    }
}