packages/SystemUI/src/com/android/systemui/qs/tiles/AlarmTile.kt

package com.android.systemui.qs.tiles

import android.app.AlarmManager
import android.app.AlarmManager.AlarmClockInfo
import android.content.Intent
import android.os.Handler
import android.os.Looper
import android.provider.AlarmClock
import android.service.quicksettings.Tile
import android.text.TextUtils
import android.text.format.DateFormat
import android.view.View
import androidx.annotation.VisibleForTesting
import com.android.internal.logging.MetricsLogger
import com.android.systemui.R
import com.android.systemui.animation.ActivityLaunchAnimator
import com.android.systemui.dagger.qualifiers.Background
import com.android.systemui.dagger.qualifiers.Main
import com.android.systemui.plugins.ActivityStarter
import com.android.systemui.plugins.FalsingManager
import com.android.systemui.plugins.qs.QSTile
import com.android.systemui.plugins.statusbar.StatusBarStateController
import com.android.systemui.qs.QSHost
import com.android.systemui.qs.logging.QSLogger
import com.android.systemui.qs.tileimpl.QSTileImpl
import com.android.systemui.settings.UserTracker
import com.android.systemui.statusbar.policy.NextAlarmController
import java.util.Locale
import javax.inject.Inject

class AlarmTile @Inject constructor(
    host: QSHost,
    @Background backgroundLooper: Looper,
    @Main mainHandler: Handler,
    falsingManager: FalsingManager,
    metricsLogger: MetricsLogger,
    statusBarStateController: StatusBarStateController,
    activityStarter: ActivityStarter,
    qsLogger: QSLogger,
    private val userTracker: UserTracker,
    nextAlarmController: NextAlarmController
) : QSTileImpl<QSTile.State>(
    host,
    backgroundLooper,
    mainHandler,
    falsingManager,
    metricsLogger,
    statusBarStateController,
    activityStarter,
    qsLogger
) {

    private var lastAlarmInfo: AlarmManager.AlarmClockInfo? = null
    private val icon = ResourceIcon.get(R.drawable.ic_alarm)
    @VisibleForTesting
    internal val defaultIntent = Intent(AlarmClock.ACTION_SET_ALARM)
    private val callback = NextAlarmController.NextAlarmChangeCallback { nextAlarm ->
        lastAlarmInfo = nextAlarm
        refreshState()
    }

    init {
        nextAlarmController.observe(this, callback)
    }

    override fun newTileState(): QSTile.State {
        return QSTile.State().apply {
            handlesLongClick = false
        }
    }

    override fun handleClick(view: View?) {
        val animationController = view?.let { ActivityLaunchAnimator.Controller.fromView(it) }
        val pendingIntent = lastAlarmInfo?.showIntent
        if (pendingIntent != null) {
            mActivityStarter.postStartActivityDismissingKeyguard(pendingIntent, animationController)
        } else {
            mActivityStarter.postStartActivityDismissingKeyguard(defaultIntent, 0,
                    animationController)
        }
    }

    override fun handleUpdateState(state: QSTile.State, arg: Any?) {
        state.icon = icon
        state.label = tileLabel
        lastAlarmInfo?.let {
            state.secondaryLabel = formatNextAlarm(it)
            state.state = Tile.STATE_ACTIVE
        } ?: run {
            state.secondaryLabel = mContext.getString(R.string.qs_alarm_tile_no_alarm)
            state.state = Tile.STATE_INACTIVE
        }
        state.contentDescription = TextUtils.concat(state.label, ", ", state.secondaryLabel)
    }

    override fun getTileLabel(): CharSequence {
        return mContext.getString(R.string.status_bar_alarm)
    }

    private fun formatNextAlarm(info: AlarmClockInfo): String {
        val skeleton = if (use24HourFormat()) "EHm" else "Ehma"
        val pattern = DateFormat.getBestDateTimePattern(Locale.getDefault(), skeleton)
        return DateFormat.format(pattern, info.triggerTime).toString()
    }

    private fun use24HourFormat(): Boolean {
        return DateFormat.is24HourFormat(mContext, userTracker.userId)
    }

    override fun getMetricsCategory(): Int {
        return 0
    }

    override fun getLongClickIntent(): Intent? {
        return null
    }
}