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For #25281 - Improve stories impressions recording.

This fixes the following two scenarios resulting in improper recordings:
- sponsored stories were recorded as shown as part of the impressions recording
for all the stories (both recommended and sponsored). Separated the two.
- sponsored stories were not recorded as shown if the user doesn't scroll.
This could happen if just toggling categories which would result in a new list
of stories to show. Will recheck after the time to settle if the composable is
shown.
This commit is contained in:
Mugurell 2022-05-26 14:11:17 +03:00 committed by mergify[bot]
parent 41a1f31a84
commit 12070cb7b8
2 changed files with 24 additions and 5 deletions

View File

@ -25,6 +25,7 @@ import androidx.compose.foundation.lazy.rememberLazyListState
import androidx.compose.material.Icon
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
@ -50,6 +51,7 @@ import androidx.compose.ui.tooling.preview.PreviewParameterProvider
import androidx.compose.ui.unit.Dp
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import kotlinx.coroutines.delay
import mozilla.components.service.pocket.PocketStory
import mozilla.components.service.pocket.PocketStory.PocketRecommendedStory
import mozilla.components.service.pocket.PocketStory.PocketSponsoredStory
@ -274,6 +276,7 @@ private fun Modifier.onShown(
onVisible: () -> Unit,
): Modifier {
val initialTime = System.currentTimeMillis()
var lastVisibleCoordinates: LayoutCoordinates? = null
return composed {
val context = LocalContext.current
@ -291,14 +294,28 @@ private fun Modifier.onShown(
}
}
onGloballyPositioned { coordinates ->
if (!wasEventReported && coordinates.isVisible(screenBounds, threshold) &&
System.currentTimeMillis() - initialTime > MINIMUM_TIME_TO_SETTLE_MS
) {
// In the event this composable starts as visible but then gets pushed offscreen
// before MINIMUM_TIME_TO_SETTLE_MS we will not report is as being visible.
// In the LaunchedEffect we add support for when the composable starts as visible and then
// it's position isn't changed after MINIMUM_TIME_TO_SETTLE_MS so it must be reported as visible.
LaunchedEffect(initialTime) {
delay(MINIMUM_TIME_TO_SETTLE_MS.toLong())
if (!wasEventReported && lastVisibleCoordinates?.isVisible(screenBounds, threshold) == true) {
wasEventReported = true
onVisible()
}
}
onGloballyPositioned { coordinates ->
if (!wasEventReported && coordinates.isVisible(screenBounds, threshold)) {
if (System.currentTimeMillis() - initialTime > MINIMUM_TIME_TO_SETTLE_MS) {
wasEventReported = true
onVisible()
} else {
lastVisibleCoordinates = coordinates
}
}
}
}
}

View File

@ -59,7 +59,9 @@ class PocketStoriesViewHolder(
// We should report back when a certain story is actually being displayed.
// Cannot do it reliably so for now we'll just mass report everything as being displayed.
stories?.let {
interactor.onStoriesShown(it)
// Only report here the impressions for recommended stories.
// Sponsored stories use a different API for more accurate tracking.
interactor.onStoriesShown(it.filterIsInstance<PocketRecommendedStory>())
}
}