#!/usr/bin/env python3
"""Show a received SMS on a proper message screen instead of a transient notification.

uiNotificationShow() draws over the current screen, but the normal screen redraw wipes
it again - which is why the text never appeared even though the message was received
and decoded correctly. The message box screen is a real menu: it stays until the user
dismisses it.
"""
W = "/home/viktor/ogd77rel/uv_src/OpenGD77_MDUV380_DM1701_20260130/MDUV380_firmware/application"
p = W + "/source/applicationMain.c"
s = open(p).read()

if "MESSAGEBOX_TYPE_INFO" in s and "smsMarkRead" in s and "MessageBox.message, MESSAGEBOX_MESSAGE_LEN_MAX, \"%u:" in s:
    print("already patched")
    raise SystemExit(0)

# Replace the notification-based display with a message box screen.
old_start = "\t\tif (smsHasUnread())\n\t\t{\n"
assert old_start in s, "unread block not found"

start = s.index(old_start)
# find the end of that block (the closing brace of the if, at the same indent)
end_marker = "\n\t\t}\n"
end = s.index(end_marker, start) + len(end_marker)
old_block = s[start:end]
assert "smsMarkRead" in old_block, "unexpected block contents: %r" % old_block[:200]

new_block = """		if (smsHasUnread())
		{
			const smsMessage_t *msg = smsGetLatest();

			// Only interrupt the user when they are on a normal operating screen.
			int currentMenu = menuSystemGetCurrentMenuNumber();

			if ((msg != NULL) && ((currentMenu == UI_VFO_MODE) || (currentMenu == UI_CHANNEL_MODE)))
			{
				snprintf(uiDataGlobal.MessageBox.message, MESSAGEBOX_MESSAGE_LEN_MAX, "%u\\n%s",
						(unsigned int)msg->srcId, msg->text);
				uiDataGlobal.MessageBox.type = MESSAGEBOX_TYPE_INFO;
				uiDataGlobal.MessageBox.decoration = MESSAGEBOX_DECORATION_FRAME;
				uiDataGlobal.MessageBox.buttons = MESSAGEBOX_BUTTONS_OK;
				uiDataGlobal.MessageBox.validatorCallback = NULL;
				menuSystemPushNewMenu(UI_MESSAGE_BOX);

				soundSetMelody(MELODY_ACK_BEEP);
				smsMarkRead();
			}
		}
"""

s = s[:start] + new_block + s[end:]
open(p, "w").write(s)
print("applicationMain.c: incoming SMS now opens a message screen")