// SPDX-License-Identifier: GPL-3.0-or-later
use molotov_core::graphics::c_api::*;
use molotov_core::graphics::surface::GraphicsSurface;
use molotov_core::graphics::types::{ANativeWindow_Buffer, WindowFormat};
use molotov_core::jni::activity::ActivityRunner;
use std::sync::Arc;

#[test]
fn test_end_to_end_graphics_surface_and_activity_binding() {
    let mut runner = ActivityRunner::new();
    let surface = Arc::new(GraphicsSurface::new(1280, 720, WindowFormat::Rgba8888));
    let window_handle = register_window_surface(surface);

    unsafe {
        // 1. Notify activity that native window was created
        runner.trigger_window_created(window_handle as *mut _);

        // 2. Engine queries window geometry
        assert_eq!(ANativeWindow_getWidth(window_handle), 1280);
        assert_eq!(ANativeWindow_getHeight(window_handle), 720);

        // 3. Engine renders frame
        let mut buf = std::mem::MaybeUninit::<ANativeWindow_Buffer>::uninit();
        assert_eq!(ANativeWindow_lock(window_handle, buf.as_mut_ptr(), std::ptr::null_mut()), 0);

        let buffer = buf.assume_init();
        // Write solid color into buffer (RGBA = 255, 0, 0, 255)
        let pixel_count = (buffer.width * buffer.height) as usize;
        let pixels = std::slice::from_raw_parts_mut(buffer.bits as *mut u32, pixel_count);
        pixels.fill(0xff00_00ff);

        assert_eq!(ANativeWindow_unlockAndPost(window_handle), 0);

        // 4. Notify activity on window destroy
        runner.trigger_window_destroyed(window_handle as *mut _);
        ANativeWindow_release(window_handle);
    }
}