# 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, (hr, fn, msg):
        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 wincerapi.__dict__.items():
        if name[:6]=="CSIDL_":
            try:
                loc = str(wincerapi.CeGetSpecialFolderPath(val))
                print "Folder %s is at %s" % (name, loc)
            except win32api.error, 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, 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, (rc, fn, msg):
                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, 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()