// JNI helpers used by modules/platform/android.sx. Kept in the library
// so consumers don't need to vendor an identically-named copy. The sx
// compiler resolves `#source "vendors/..."` against the stdlib search
// paths in addition to the consumer's project root.
//
// The safe-insets JNI chain that used to live here was migrated to
// sx in Phase 1D of the FFI plan (see `library/modules/platform/
// android.sx::sx_query_safe_insets_jni` and the JavaVM helpers
// alongside it). What remains is the input-handler installer, which
// is a plain C struct-field assignment rather than JNI dispatch and
// has no sx equivalent yet.

#ifdef __ANDROID__
#include <android/input.h>

// Mirror of struct android_app (NDK 29 / arm64) up to the fields we touch.
// Avoids depending on the glue header in the sx library compile path.
struct sx_android_app_min {
    void* userData;
    void (*onAppCmd)(struct sx_android_app_min* app, int cmd);
    int (*onInputEvent)(struct sx_android_app_min* app, AInputEvent* event);
    // ...rest of struct ignored; we only assign onInputEvent.
};

// Install an sx-side handler as `app->onInputEvent`. native_app_glue's
// process_input loop calls this for every AInputEvent it pulls off the
// input queue. Returning 1 marks the event as consumed.
void sx_android_install_input_handler(void* app,
    int (*handler)(void* app, void* event)) {
    if (app == 0) return;
    struct sx_android_app_min* a = (struct sx_android_app_min*)app;
    a->onInputEvent = (int (*)(struct sx_android_app_min*, AInputEvent*))handler;
}
#endif