# Drive the REAL app's bridge SHM: open GUI ch=0, screenshot, pixel analysis.
import ctypes, ctypes.wintypes as w, struct, subprocess, sys, os, time, re

sys.stdout.reconfigure(encoding='utf-8', errors='replace')

SHM_NAME = "SonicForge_DAW_IPC"
SIZE = 32768
LOG = os.path.join(os.path.dirname(os.path.abspath(__file__)), "probe_app.log")

user32 = ctypes.windll.user32
kernel32 = ctypes.windll.kernel32
kernel32.CreateFileMappingA.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.wintypes.DWORD, ctypes.wintypes.DWORD, ctypes.wintypes.DWORD, ctypes.c_char_p]
kernel32.CreateFileMappingA.restype = ctypes.c_void_p
kernel32.MapViewOfFile.argtypes = [ctypes.c_void_p, ctypes.wintypes.DWORD, ctypes.wintypes.DWORD, ctypes.wintypes.DWORD, ctypes.c_size_t]
kernel32.MapViewOfFile.restype = ctypes.c_void_p
INVALID_HANDLE_VALUE = ctypes.c_void_p(-1).value
PAGE_READWRITE = 0x04
FILE_MAP_ALL_ACCESS = 0xF001F

hMap = kernel32.CreateFileMappingA(INVALID_HANDLE_VALUE, None, PAGE_READWRITE, 0, SIZE, SHM_NAME.encode())
ptr = kernel32.MapViewOfFile(hMap, FILE_MAP_ALL_ACCESS, 0, 0, 0)

def w32(off, fmt, *args):
    ctypes.memmove(ptr + off, struct.pack(fmt, *args), struct.calcsize(fmt))

def write_control(type_, arg0, arg1, ch, path):
    for i in range(8):
        off = 2836 + i * 1040
        t = ctypes.c_uint32.from_address(ptr + off).value
        if t == 0:
            w32(off, 'IIII', type_, arg0, arg1, ch)
            if path:
                b = path.encode('utf-8')[:1023] + b'\x00'
                ctypes.memmove(ptr + off + 16, b, len(b))
            return i
    raise RuntimeError("control queue full")

def push_controls(events):
    for i in range(8):
        w32(2836 + i * 1040, 'I', 0)
    for (type_, arg0, arg1, ch, path) in events:
        write_control(type_, arg0, arg1, ch, path)
    w32(11156, 'I', len(events))

def wait_log(pattern, timeout):
    t0 = time.time()
    while time.time() - t0 < timeout:
        try:
            with open(LOG, 'r', encoding='utf-8', errors='replace') as f:
                lines = f.readlines()
            for i in range(len(lines)):
                if pattern in lines[i]:
                    return lines[i].strip()
        except FileNotFoundError:
            pass
        time.sleep(0.2)
    return None

# copy app bridge.log to local log for wait_log
applog = os.path.join(os.environ.get('APPDATA', '.'), 'SonicForgeDAW', 'logs', 'bridge.log')
open(LOG, 'w', encoding='utf-8').write(open(applog, encoding='utf-8', errors='replace').read())

print("push OPEN_GUI ch=0...")
push_controls([(4, 0, 0, 0, "nexus")])
r = wait_log("GUI attached", 40)
print("[open]", r)
hwnd = None
if r:
    m = re.search(r'hwnd=([0-9A-Fa-f]+)', r)
    if m:
        hwnd = int(m.group(1), 16)
print("hwnd =", hex(hwnd) if hwnd else None)
time.sleep(6)

if hwnd:
    rw = w.RECT()
    user32.GetWindowRect(hwnd, ctypes.byref(rw))
    print("window rect", rw.left, rw.top, rw.right, rw.bottom, "vis", user32.IsWindowVisible(hwnd))
    wdt, hgt = rw.right - rw.left, rw.bottom - rw.top
    ps = f"""
Add-Type -AssemblyName System.Drawing
$bmp = New-Object System.Drawing.Bitmap({wdt}, {hgt})
$g = [System.Drawing.Graphics]::FromImage($bmp)
$g.CopyFromScreen({rw.left}, {rw.top}, 0, 0, $bmp.Size)
$bmp.Save('C:/Users/locpham/SonicForgeStudio/native_bridge/debug/probe_app.png')
$g.Dispose(); $bmp.Dispose()
"""
    subprocess.run(["powershell", "-NoProfile", "-Command", ps], check=False)
    print("screenshot saved probe_app.png")
else:
    # dump all windows with class SonicForge_Native_VST3_Class
    import ctypes
    found = []
    @ctypes.WINFUNCTYPE(w.BOOL, w.HWND, w.LPARAM)
    def cb(h, lp):
        buf = ctypes.create_unicode_buffer(64)
        user32.GetClassNameW(h, buf, 64)
        if 'SonicForge' in buf.value:
            found.append((h, buf.value))
        return True
    user32.EnumWindows(cb, 0)
    print("native vst windows:", [(hex(h), c) for h, c in found])

kernel32.UnmapViewOfFile.argtypes = [ctypes.c_void_p]
kernel32.CloseHandle.argtypes = [ctypes.c_void_p]
kernel32.UnmapViewOfFile(ptr)
kernel32.CloseHandle(hMap)
print("done")