# A demo of the Windows CE Remote API
#
# This connects to a CE device, and interacts with it.

import wincerapi
import win32event
import win32api
import win32con
import os
import sys
import getopt


def DumpPythonRegistry():
    try:
        h = wincerapi.CeRegOpenKeyEx(win32con.HKEY_LOCAL_MACHINE, "Software\\Python\\PythonCore\\%s\\PythonPath" % sys.winver)
    except win32api.error:
        print("The remote device does not appear to have Python installed")
        return 0
    path, typ = wincerapi.CeRegQueryValueEx(h, None)
    print("The remote PythonPath is '%s'" % (str(path), ))
    h.Close()
    return 1

def DumpRegistry(root, level=0):
    # A recursive dump of the remote registry to test most functions.
    h = wincerapi.CeRegOpenKeyEx(win32con.HKEY_LOCAL_MACHINE, None)
    level_prefix = " " * level
    index = 0
    # Enumerate values.
    while 1:
        try:
            name, data, typ = wincerapi.CeRegEnumValue(root, index)
        except win32api.error:
            break
        print("%s%s=%s" % (level_prefix, name, repr(str(data))))
        index = index+1
    # Now enumerate all keys.
    index=0
    while 1:
        try:
            name, klass = wincerapi.CeRegEnumKeyEx(root, index)
        except win32api.error:
            break
        print("%s%s\\" % (level_prefix, name))
        subkey = wincerapi.CeRegOpenKeyEx(root, name)
        DumpRegistry(subkey, level+1)
        index = index+1

def DemoCopyFile():
    # Create a file on the device, and write a string.
    cefile = wincerapi.CeCreateFile("TestPython", win32con.GENERIC_WRITE, 0, None, win32con.OPEN_ALWAYS, 0, None)
    wincerapi.CeWriteFile(cefile, "Hello from Python")
    cefile.Close()
    # reopen the file and check the data.
    cefile = wincerapi.CeCreateFile("TestPython", win32con.GENERIC_READ, 0, None, win32con.OPEN_EXISTING, 0, None)
    if wincerapi.CeReadFile(cefile, 100) != "Hello from Python":
        print("Couldnt read the data from the device!")
    cefile.Close()
    # Delete the test file
    wincerapi.CeDeleteFile("TestPython")
    print("Created, wrote to, read from and deleted a test file!")

def DemoCreateProcess():
    try:
        hp, ht, pid, tid = wincerapi.CeCreateProcess("Windows\\Python.exe", "", None, None, 0, 0, None, "", None)

        # Not necessary, except to see if handle closing raises an exception
        # (if auto-closed, the error is suppressed)
        hp.Close()
        ht.Close()
        print("Python is running on the remote device!")
    except win32api.error as xxx_todo_changeme1:
        (hr, fn, msg) = xxx_todo_changeme1.args
        print("Couldnt execute remote process -", msg)

def DumpRemoteMachineStatus():
    ACLineStatus, BatteryFlag, BatteryLifePercent, BatteryLifeTime, BatteryFullLifeTime, BackupBatteryFlag, BackupBatteryLifePercent, BackupBatteryLifeTime, BackupBatteryLifeTime = \
            wincerapi.CeGetSystemPowerStatusEx()
    if ACLineStatus:
        power = "AC"
    else:
        power = "battery"
    if BatteryLifePercent==255:
        batPerc = "unknown"
    else:
        batPerc = BatteryLifePercent
    print("The batteries are at %s%%, and is currently being powered by %s" % (batPerc, power))

    memLoad, totalPhys, availPhys, totalPage, availPage, totalVirt, availVirt = \
            wincerapi.CeGlobalMemoryStatus()

    print("The memory is %d%% utilized." % (memLoad))
    print("%-20s%-10s%-10s" % ("", "Total", "Avail"))
    print("%-20s%-10s%-10s" % ("Physical Memory", totalPhys, availPhys))
    print("%-20s%-10s%-10s" % ("Virtual Memory", totalVirt, availVirt))
    print("%-20s%-10s%-10s" % ("Paging file", totalPage, availPage))


    storeSize, freeSize = wincerapi.CeGetStoreInformation()
    print("%-20s%-10s%-10s" % ("File store", storeSize, freeSize))

    print("The CE temp path is", wincerapi.CeGetTempPath())
    print("The system info for the device is", wincerapi.CeGetSystemInfo())

def DumpRemoteFolders():
    # Dump all special folders possible.
    for name, val in list(wincerapi.__dict__.items()):
        if name[:6]=="CSIDL_":
            try:
                loc = str(wincerapi.CeGetSpecialFolderPath(val))
                print("Folder %s is at %s" % (name, loc))
            except win32api.error as details:
                pass

    # Get the shortcut targets for the "Start Menu"
    print("Dumping start menu shortcuts...")
    try:
        startMenu = str(wincerapi.CeGetSpecialFolderPath(wincerapi.CSIDL_STARTMENU))
    except win32api.error as details:
        print("This device has no start menu!", details)
        startMenu = None

    if startMenu:
        for fileAttr in wincerapi.CeFindFiles(os.path.join(startMenu, "*")):
            fileName = fileAttr[8]
            fullPath = os.path.join(startMenu, str(fileName))
            try:
                resolved = wincerapi.CeSHGetShortcutTarget(fullPath)
            except win32api.error as xxx_todo_changeme:
                (rc, fn, msg) = xxx_todo_changeme.args
                resolved = "#Error - %s" % msg
            print("%s->%s" % (fileName, resolved))

    #       print "The start menu is at",
    #       print wincerapi.CeSHGetShortcutTarget("\\Windows\\Start Menu\\Shortcut to Python.exe.lnk")

def usage():
    print("Options:")
    print("-a - Execute all demos")
    print("-p - Execute Python process on remote device")
    print("-r - Dump the remote registry")
    print("-f - Dump all remote special folder locations")
    print("-s - Dont dump machine status")
    print("-y - Perform asynch init of CE connection")

def main():
    async_init = bStartPython = bDumpRegistry = bDumpFolders = 0
    bDumpStatus = 1
    try:
        opts, args = getopt.getopt(sys.argv[1:], "apr")
    except getopt.error as why:
        print("Invalid usage:", why)
        usage()
        return

    for o, v in opts:
        if o=="-a":
            bStartPython = bDumpRegistry = bDumpStatus = bDumpFolders = asynch_init = 1
        if o=="-p":
            bStartPython=1
        if o=="-r":
            bDumpRegistry=1
        if o=="-s":
            bDumpStatus=0
        if o=="-f":
            bDumpFolders = 1
        if o=="-y":
            print("Doing asynch init of CE connection")
            async_init = 1

    if async_init:
        event, rc = wincerapi.CeRapiInitEx()
        while 1:
            rc = win32event.WaitForSingleObject(event, 500)
            if rc==win32event.WAIT_OBJECT_0:
                # We connected.
                break
            else:
                print("Waiting for Initialize to complete (picture a Cancel button here :)")
    else:
        wincerapi.CeRapiInit()
    print("Connected to remote CE device.")
    try:
        verinfo = wincerapi.CeGetVersionEx()
        print("The device is running windows CE version %d.%d - %s" % (verinfo[0], verinfo[1], verinfo[4]))

        if bDumpStatus:
            print("Dumping remote machine status")
            DumpRemoteMachineStatus()

        if bDumpRegistry:
            print("Dumping remote registry...")
            DumpRegistry(win32con.HKEY_LOCAL_MACHINE)

        if bDumpFolders:
            print("Dumping remote folder information")
            DumpRemoteFolders()

        DemoCopyFile()
        if bStartPython:
            print("Starting remote Python process")
            if DumpPythonRegistry():
                DemoCreateProcess()
            else:
                print("Not trying to start Python, as it's not installed")

    finally:
        wincerapi.CeRapiUninit()
        print("Disconnected")

if __name__=='__main__':
    main()
