// `#jni_main` pipeline slice 2 (PLAN-FFI.md): the compiler renders a
// `.java` source for a `#jni_main #jni_class("...")` declaration, runs
// `javac` + `d8`, and bundles `classes.dex` into the APK.
//
// Slice 2 only wires the plumbing — the manifest still points at
// `android.app.NativeActivity`, so the user's class isn't loaded at
// runtime. Slice 3 (manifest synthesis) and slice 4 (RegisterNatives)
// land in follow-up commits.
//
// Build to inspect APK contents (requires Android SDK + JDK):
//   /Users/agra/projects/sx/zig-out/bin/sx build --target android \
//       --apk /tmp/sxjnimain.apk --bundle-id co.swipelab.sxjnimain \
//       -o /tmp/libsxjnimain.so examples/ffi-jni-main-01-emit.sx
//   unzip -l /tmp/sxjnimain.apk | grep classes.dex
//
// Cross-compile test (compile-only): see tests/cross_compile.sh's
// `android | examples/ffi-jni-main-01-emit.sx` tuple. APK creation
// itself isn't exercised by cross_compile.sh — only that the example
// lowers and links cleanly with `#jni_main` in scope.

#import "modules/std.sx";
#import "modules/compiler.sx";

// `#jni_main` flags this as the launchable Android Activity class. The
// empty body intentionally has zero methods — slice 2 just verifies the
// .java/.dex pipeline; `onCreate` overriding lands once slice 4 wires
// `RegisterNatives` so the `sx_<method>` symbols actually resolve.
SxApp :: #jni_main #jni_class("co/swipelab/sxjnimain/SxApp") { }

main :: () -> s32 { 0; }

// Android NDK entry symbol — kept as a 3-line trampoline so this example
// passes `--target android` builds via `tests/cross_compile.sh`.
android_main :: (app: *void) {
    inline if OS == .android {
        main();
    }
}