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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
package org.mozilla.focus.browser
import android.content.Context
import androidx.preference.PreferenceManager
import mozilla.components.browser.state.action.BrowserAction
import mozilla.components.browser.state.action.TrackingProtectionAction
import mozilla.components.browser.state.state.BrowserState
import mozilla.components.lib.state.Middleware
import mozilla.components.lib.state.MiddlewareContext
import org.mozilla.focus.R
import org.mozilla.focus.ext.settings
/**
* [Middleware] to record the number of blocked trackers in response to [BrowserAction]s.
* @param context The application context.
*/
class BlockedTrackersMiddleware(
private val context: Context,
) : Middleware<BrowserState, BrowserAction> {
private val settings = context.settings
private val preferences = PreferenceManager.getDefaultSharedPreferences(context)
override fun invoke(
context: MiddlewareContext<BrowserState, BrowserAction>,
next: (BrowserAction) -> Unit,
action: BrowserAction,
) {
when (action) {
is TrackingProtectionAction.TrackerBlockedAction -> {
incrementCount()
}
else -> {
// no-op
}
}
next(action)
}
private fun incrementCount() {
val blockedTrackersCount = settings.getTotalBlockedTrackersCount()
preferences
.edit()
.putInt(
context.getString(R.string.pref_key_privacy_total_trackers_blocked_count),
blockedTrackersCount + 1,
)
.apply()
}
}