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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.fenix
import androidx.navigation.NavController
import kotlinx.coroutines.CoroutineDispatcher
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.distinctUntilChanged
import kotlinx.coroutines.flow.map
import mozilla.components.browser.state.selector.selectedTab
import mozilla.components.browser.state.state.BrowserState
import mozilla.components.browser.state.state.ContentState
import mozilla.components.browser.state.store.BrowserStore
import mozilla.components.concept.engine.utils.ABOUT_HOME_URL
import mozilla.components.lib.state.helpers.AbstractBinding
import org.mozilla.fenix.home.HomeFragment
/**
* A binding for observing [ContentState.url] and navigating to the [HomeFragment] if the current session's url is
* updated to [ABOUT_HOME_URL].
*/
class AboutHomeBinding(
browserStore: BrowserStore,
private val navController: NavController,
mainDispatcher: CoroutineDispatcher = Dispatchers.Main,
) : AbstractBinding<BrowserState>(browserStore, mainDispatcher) {
override suspend fun onState(flow: Flow<BrowserState>) {
flow
.map { it.selectedTab?.content?.url }
.distinctUntilChanged()
.collect { url ->
if (
url == ABOUT_HOME_URL &&
!listOf(
R.id.homeFragment,
R.id.onboardingFragment,
// Closing a tab in the tabs tray can select an [ABOUT_HOME_URL] tab. Do not
// navigate to the homepage in that case since it would dismiss the tabs tray.
R.id.tabManagementFragment,
)
.contains(navController.currentDestination?.id)
) {
navController.navigate(NavGraphDirections.actionGlobalHome())
}
}
}
}