import win32con, string, traceback
import win32com.client, win32com.client.gencache
import pythoncom
import time
import os

constants = win32com.client.constants

win32com.client.gencache.EnsureModule('{783CD4E0-9D54-11CF-B8EE-00608CC9A71F}', 0, 5, 0)

error = "vssutil error"

def GetSS():
	ss=win32com.client.Dispatch("SourceSafe")
	# SS seems a bit wierd.  It defaults the arguments as empty strings, but
	# then complains when they are used - so we pass "Missing"
	ss.Open(pythoncom.Missing, pythoncom.Missing, pythoncom.Missing)
	return ss

def test(projectName):
	ss=GetSS()
	project = ss.VSSItem(projectName)

	for item in project.GetVersions(constants.VSSFLAG_RECURSYES):
		print(item.VSSItem.Name, item.VersionNumber, item.Action)
		

#	item=i.Versions[0].VSSItem
#	for h in i.Versions:
#		print `h.Comment`, h.Action, h.VSSItem.Name
	

def SubstituteInString(inString, evalEnv):
	substChar = "$"
	fields = string.split(inString, substChar)
	newFields = []
	for i in range(len(fields)):
		didSubst = 0
		strVal = fields[i]
		if i%2!=0:
			try:
				strVal = eval(strVal,evalEnv[0], evalEnv[1])
				newFields.append(strVal)
				didSubst = 1
			except:
				traceback.print_exc()
				print("Could not substitute", strVal)
		if not didSubst:
			newFields.append(strVal)
	return string.join(map(str, newFields), "")

def SubstituteInFile(inName, outName, evalEnv):
	inFile = open(inName, "r")
	try:
		outFile = open(outName, "w")
		try:
			while 1:
				line = inFile.read()
				if not line: break
				outFile.write(SubstituteInString(line, evalEnv))
		finally:
			outFile.close()
	finally:
		inFile.close()

def VssLog(project, linePrefix = "", noLabels = 5, maxItems=150):
	lines = []
	num = 0
	labelNum = 0
	for i in project.GetVersions(constants.VSSFLAG_RECURSYES):
		num = num + 1
		if num > maxItems : break
		commentDesc = itemDesc = ""
		if i.Action[:5]=="Added":
			continue
		if len(i.Label):
			labelNum = labelNum + 1
			itemDesc = i.Action
		else:
			itemDesc = i.VSSItem.Name
			if str(itemDesc[-4:])==".dsp":
				continue
		if i.Comment:
			commentDesc ="\n%s\t%s" % (linePrefix, i.Comment)
		lines.append("%s%s\t%s%s" % (linePrefix, time.asctime(time.localtime(int(i.Date))), itemDesc, commentDesc))
		if labelNum > noLabels:
			break
	return string.join(lines,"\n")
	
def SubstituteVSSInFile(projectName, inName, outName):
	import win32api
	if win32api.GetFullPathName(inName)==win32api.GetFullPathName(outName):
		raise RuntimeError("The input and output filenames can not be the same")
	sourceSafe=GetSS()
	project = sourceSafe.VSSItem(projectName)
	# Find the last label
	label = None
	for version in project.Versions:
		if version.Label:
			break
	else:
		print("Couldnt find a label in the sourcesafe project!")
		return
	# Setup some local helpers for the conversion strings.
	vss_label = version.Label
	vss_date = time.asctime(time.localtime(int(version.Date)))
	now = time.asctime(time.localtime(time.time()))
	SubstituteInFile(inName, outName, (locals(),globals()))
	
			
def CountCheckouts(item):
	num = 0
	if item.Type==constants.VSSITEM_PROJECT:
		for sub in item.Items:
			num = num + CountCheckouts(sub)
	else:
		if item.IsCheckedOut:
			num = num + 1
	return num

def GetLastBuildNo(project):
	i = GetSS().VSSItem(project)
	# Find the last label
	lab = None
	for version in i.Versions:
		lab = str(version.Label)
		if lab: return lab
	return None

def MakeNewBuildNo(project, buildDesc = None, auto=0, bRebrand = 0):
	if buildDesc is None: buildDesc = "Created by Python"
	ss = GetSS()
	i = ss.VSSItem(project)
	num = CountCheckouts(i)
	if num > 0:
		msg = "This project has %d items checked out\r\n\r\nDo you still want to continue?" % num
		import win32ui
		if win32ui.MessageBox(msg, project, win32con.MB_YESNO) != win32con.IDYES:
			return


	oldBuild = buildNo = GetLastBuildNo(project)
	if buildNo is None:
		buildNo = "1"
		oldBuild = "<None>"
	else:
		try:
			buildNo = string.atoi(buildNo)
			if not bRebrand: buildNo = buildNo + 1
			buildNo = str(buildNo)
		except ValueError:
			raise error("The previous label could not be incremented: %s" % (oldBuild))

	if not auto:
		from pywin.mfc import dialog
		buildNo = dialog.GetSimpleInput("Enter new build number", buildNo, "%s - Prev: %s" % (project, oldBuild))
		if buildNo is None: return
	i.Label(buildNo, "Build %s: %s" % (buildNo,buildDesc))
	if auto:
		print("Branded project %s with label %s" % (project, buildNo))
	return buildNo

if __name__=='__main__':
#	UpdateWiseExeName("PyWiseTest.wse", "PyWiseTest-10.exe")

#	MakeVersion()
#	test(tp)
#	MakeNewBuildNo(tp)
	tp = "\\Python\\Python Win32 Extensions"
	SubstituteVSSInFile(tp, "d:\\src\\pythonex\\win32\\win32.txt", "d:\\temp\\win32.txt")