#!/usr/bin/env python

# (C) 2004 Andre Detsch. Released under the GNU GPL.


### Changelog ###############################################################

# 24/08/2004 - [detsch] First functional version, mostly based on Manager source code
#

from GetAvailable import getGoboVariable
from PythonUtils  import *

global_describeprogram_conf = 'Scripts/DescribeProgram.conf'

def format_text(mode, category, text):
	if mode == 'terminal':
		return '\033[32m' + '[' + category + ']' + "\033[0m" + '\n' + text.strip() + '\n\n'
	elif mode == 'ascii':
		return '[' + category + ']' + '\n' + text.strip() + '\n\n'
	elif mode == 'html':
		return '<p><font color="#000077"><b>['+category+'] </b></font><br>'+text+'</p>'

def DescribeProgram(p, vr='', descriptionsPaths=[], mode='terminal', updateall=False, noweb=False, categories=['Summary', 'Description', 'License', 'Homepage']):
	import os
	goboPrograms = getGoboVariable('goboPrograms')
	global global_describeprogram_conf

	rawDescription = ''
	v,r = Split_Version_Revision(vr)
	if not updateall and os.access(goboPrograms+'/'+p, os.R_OK):
		if v:
			d = v
		else:
			d = 'Current'

		if os.access(goboPrograms+'/'+p+'/'+d+'/Resources/Description', os.R_OK):
			f = open(goboPrograms+'/'+p+'/'+d+'/Resources/Description')
			rawDescription = f.read().strip()
			f.close()

	if not rawDescription and not updateall and v:
		recipesLocalDirs = getCompileOptions()[0]
		for directory in recipesLocalDirs:
			path = directory+'/'+p+'/'+vr+'/Resources/Description'
			if os.access(path, os.R_OK):
				f = open(path)
				rawDescription = f.read().strip()
				f.close()
				break

	# insert subdirs too
	if not descriptionsPaths:
		descriptionsPaths = getGoboVariable('descriptionsLocalPath', global_describeprogram_conf, True)
		if not descriptionsPaths:
		    return ''

	if updateall:
		localpath = descriptionsPaths[0]
		import string
		urls = getGoboVariable('descriptionsSources', global_describeprogram_conf, True)
		for j in range(len(urls)):
			url = string.join(urls[j].split('/')[:-1], '/') + '/'+ "AllDescriptions.tar.bz2"
			ret = bash('wget "+url+" -O /tmp/AllDescriptions.tar.bz2"', 'v')
			if ret != 0:
				print 'Failed to download '+url
				continue
			bash('cd '+localpath+'; tar xvfj /tmp/AllDescriptions.tar.bz2; rm /tmp/AllDescriptions.tar.bz2')
		return ''

	expandendDescriptionsPaths = descriptionsPaths

	for directory in expandendDescriptionsPaths:
		directory = os.path.expanduser(directory.strip())
		if os.access(directory, os.R_OK):
			for file in os.listdir(directory):
				if os.path.isdir(directory+'/'+file):
					expandendDescriptionsPaths.append(directory+'/'+file)

	if not rawDescription and not updateall:
		for directory in expandendDescriptionsPaths:
			if os.access(directory+'/'+p.lower(), os.R_OK):
				try:
					fff = open(directory+'/'+p.lower())
					rawDescription = fff.read()
					fff.close()
					break
				except:
					break

	if not noweb and (updateall or not rawDescription) :
		import GetAvailable

		try:
			urls = getGoboVariable('descriptionsSources', global_describeprogram_conf, True)
			for j in range(len(urls)):
				if '.' in urls[j].split('/')[-1]:
					extension = '.' + urls[j].split('/')[-1].split('.')[-1]
				else:
					extension = ''
				urls[j] = (urls[j], 'descriptions'+str(j)+extension)
		except:
			urls = []

		p = p.lower()
		GetAvailable.downloadFiles(urls)

		for url, file in urls:
				import bz2, os, string

				if not os.access(GetAvailable.cacheDir+'/'+file, os.R_OK):
					continue

				f = bz2.BZ2File(GetAvailable.cacheDir+'/'+file)

				try:
				    lines = f.readlines()
				except:
				    continue

				availableDescriptions = map(string.strip, lines)
				if not updateall:
					if p in availableDescriptions:
						programsList = [p]
					else:
						programsList = []
				else:
					programsList = availableDescriptions
				for name in programsList:
					localpath = descriptionsPaths[0]
					if not os.access(localpath, os.R_OK):
						os.makedirs(localpath)
						os.chmod(localpath, os.S_ISVTX)
						os.chmod(localpath, os.S_IWGRP)
						os.chmod(localpath, os.S_IWOTH)

					base_url = string.join(url.split('/')[:-1], '/')
					import urllib
					try:
						if os.access(localpath+'/'+name, os.R_OK):
							os.unlink(localpath+'/'+name)
						has_wget = not os.system('wget --help &> /dev/null')
						if has_wget:
							timeout = 5
							cmd = 'wget --timeout=%d --quiet %s -O %s && touch %s'%(timeout, base_url+'/'+name, localpath+'/'+name, localpath+'/'+name)
							os.popen(cmd)
							print 'has',cmd
						else:
							try:
								urllib.urlretrieve(base_url+'/'+name, localpath+'/'+name)
							except:
								sys.stderr.write('Timeout\n')
					except:
						sys.stderr.write('Could not save file '+localpath+'/'+name+'\n')
						return ''

					if not updateall:
						rawDescription = open(localpath+'/'+name).read().strip()
				f.close()

	rawDescription = rawDescription.strip()

	if not rawDescription or not mode in ['html', 'terminal']:
		return rawDescription

	h = TextHarvester(rawDescription)
	if h.contains('['):
		bakedDescription = h.getUntilNext('[')
	else:
		bakedDescription = ''
		category = 'Description'
		text = h.getUntilEnd()
		bakedDescription += format_text(mode, category, text)

	doBreak = False
	while True:
		if h.contains('['):
			h.skipUntilNext('[')
			category = h.getUntilNext(']')
			h.skipUntilNext(']')
			if h.contains('['):
				text = h.getUntilNext('[')
			else:
				text = h.getUntilEnd()
				doBreak = True

			if not categories or category in categories:
				bakedDescription += format_text(mode, category, text)

			if doBreak:
				break
		else:
			break

	return bakedDescription

if __name__ == '__main__':
	import sys
	import getopt, os

	try:
		opts, args = getopt.getopt(sys.argv[1:], 'm:aWh', ['mode=', 'update-all', 'no-web', 'help'])
	except getopt.GetoptError, detail:
		print sys.argv[0].split('/')[-1]+': '+str(detail)
		sys.exit(1)

	mode = 'terminal'
	updateall = False
	noWeb = False
	for o, a in opts:
		if o in ['-a', '--update-all']:
			updateall = True
		elif o in ['-m', '--mode']:
			mode = a
		elif o in ['--no-web', '-W']:
			noWeb = True
		elif o in [ '--help', '-h' ]:
			print """
DescribeProgram
 Returns the description of the program, if available.

-Options:

 -a, --update-all     downloads all descriptions available at the servers and
                      cache them locally

 -m, --mode=<mode>    Output mode: html, terminal or ascii.

 -W, --no-web         do not try to download remote descriptions if they are not
                      locally available

Examples of usage:
 DescribeProgram gimp
 DescribeProgram -W gimp
 DescribeProgram -a
 """
			sys.exit(0)
	if len (args) >= 2:
		v = args[1]
	else:
		v = ''
	if len (args) >= 1:
		p = args[0]
	elif updateall:
		p = ''
	else:
		sys.exit(1)

	ret = DescribeProgram(p, v, [], mode, updateall, noWeb)
	if ret == '':
		sys.exit(1)
	print ret