import cryptobox.plugins.base
import os

class logs(cryptobox.plugins.base.CryptoBoxPlugin):

	pluginCapabilities = [ "system" ]
	pluginVisibility = [ "preferences" ]
	requestAuth = False
	rank = 90

	def doAction(self, lines=50, size=3000, pattern=None):
		import re
		## filter input
		try:
			lines = int(lines)
			if lines < 0: raise(ValueError)
		except ValueError:
			lines = 50
		try:
			size = int(size)
			if size < 0: raise(ValueError)
		except ValueError:
			size = 3000
		if not pattern is None:
			pattern = str(pattern)
			if re.search(u'\W', pattern): pattern = None
		self.hdf[self.hdf_prefix + "Content"] = self.__getLogContent(lines, size, pattern)
		self.hdf[self.hdf_prefix + "StyleSheetFile"] = os.path.abspath(os.path.join(self.pluginDir, "logs.css"))
		return "show_log"


	def getStatus(self):
		return "%s:%s:%s" % (
			self.cbox.prefs["Log"]["Level"],
			self.cbox.prefs["Log"]["Destination"],
			self.cbox.prefs["Log"]["Details"])


	def __getLogContent(self, lines, maxSize, pattern):
		import re
		if pattern:
			content = []
			current_length = 0
			for line in self.cbox.getLogData():
				if line.find(pattern) != -1:
					content.append(line)
					current_length += len(line)
					if lines and len(content) >=lines: break
					if maxSize and current_length >=maxSize: break
		else:
			content = self.cbox.getLogData(lines, maxSize)
		return "<br/>".join(content)