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Add onSessionChangeCallback to react-native tracker #1436

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Add onSessionChangeCallback to react-native tracker #1436

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a34334d
Add onSessionChangeCallback to SessionConfiguration and update sessio…
dnedo Jun 3, 2025
92ecfa8
Rename onSessionChangeCallback to onSessionUpdateCallback in SessionC…
dnedo Jun 3, 2025
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11 changes: 9 additions & 2 deletions trackers/react-native-tracker/src/plugins/session/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,7 @@ export async function newSessionPlugin({
sessionContext = true,
foregroundSessionTimeout,
backgroundSessionTimeout,
onSessionUpdateCallback,
}: TrackerConfiguration & SessionConfiguration & { asyncStorage: AsyncStorage }): Promise<SessionPlugin> {
let sessionState = await resumeStoredSession(namespace, asyncStorage);
await storeSessionState(namespace, sessionState, asyncStorage);
Expand All @@ -82,15 +83,17 @@ export async function newSessionPlugin({
// check if session has timed out and start a new one if necessary
const now = new Date();
const timeDiff = now.getTime() - lastUpdateTs;
if (timeDiff > getTimeoutMs()) {
const didPreviousSessionTimeout = timeDiff > getTimeoutMs();
if (didPreviousSessionTimeout) {
startNewSession();
storeSessionState(namespace, sessionState, asyncStorage);
}
lastUpdateTs = now.getTime();

// update event properties
sessionState.eventIndex = (sessionState.eventIndex ?? 0) + 1;
if (sessionState.eventIndex === 1) {
const isFirstEvent = sessionState.eventIndex === 1;
if (isFirstEvent) {
sessionState.firstEventId = payloadBuilder.getPayload().eid as string;
sessionState.firstEventTimestamp = now.toISOString();
}
Expand All @@ -112,6 +115,10 @@ export async function newSessionPlugin({
data: { ...sessionState },
});
}

if (didPreviousSessionTimeout || isFirstEvent) {
onSessionUpdateCallback?.(sessionState);
}
};

return {
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4 changes: 4 additions & 0 deletions trackers/react-native-tracker/src/types.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -59,6 +59,10 @@ export interface SessionConfiguration {
* @defaultValue true
*/
sessionContext?: boolean;
/**
* A callback function that is called when the session changes
*/
onSessionUpdateCallback?: (session: SessionState) => void;
}

/**
Expand Down