##!/usr/bin/env python
#
#  Copyright (C) 2016 IT4Innovations
#
##

import json
import os
import re
import xmlrpclib


def software_list(class_path):
    """List software from given module class"""
    os.chdir(class_path)
    software_list = next(os.walk('.'))[1]
    # In case that there is 'all' module
    if 'all' in software_list:
        software_list.remove('all')
    return software_list


def get_software_versions(software_path):
    """List available versions of software"""
    os.chdir(software_path)
    return next(os.walk('.'))[2]


def get_module_description(module_path):
    """Return software homepage URL and description"""
    url = ""
    description = " "
    with open(module_path) as f:
        content = f.read()
    data = re.search(r"module-whatis\s{(Description: )?(.+)\s-\sHomepage:\s(\S+)}",
                     content, re.DOTALL)
    try:
        description = data.group(2)
        url = data.group(3)
    except AttributeError:
        pass
    return url, description

def push_to_portal(page):
    """Push HTML page to the user portal"""
    remote = 'https://admin_write_modules_table:IcifomHantyi@docs.it4i.cz/'
    server = xmlrpclib.ServerProxy(remote)
    xmlout = server.xmlrpc_salomon_list_of_modules(page)


if __name__ == "__main__":
    BASE_MODULES_DIR = '/apps/modules/'
    SKIP_DIRS = ['all']
    HTML_SOURCE_DATA = {}
    os.chdir(BASE_MODULES_DIR)
    subdirs = next(os.walk('.'))[1]
    # Delete unwanted directories
    for dir in SKIP_DIRS:
        subdirs.remove(dir)

    #print sorted(subdirs)
    #subdirs = ['base']
    # Create module class structure
    print "# List of Available Modules"
    for dir in sorted(subdirs):
        class_path = os.path.join(BASE_MODULES_DIR, dir)
        available_software = software_list(class_path)
        #print available_software
        print "\n###%s\n" % dir.title()
        print "|Module|Description|Available versions|"
        print "|--|--|--|"
        HTML_SOURCE_DATA[dir] = {}
        for soft in sorted(available_software, key=str.lower):
            software_path = os.path.join(class_path, soft)
            software_versions = get_software_versions(software_path)
            # In case that there's not any available software version
            if not software_versions:
                continue
            first_module_path = os.path.join(software_path, software_versions[0])
            software_url, software_description = get_module_description(first_module_path)
            #print software_description
            HTML_SOURCE_DATA[dir][soft] = {'versions': [],
                                           'url': software_url,
                                           'description': software_description}
            for version in software_versions:
                HTML_SOURCE_DATA[dir][soft]['versions'].append(version)
            #for version in software_versions:
            #    HTML_SOURCE_DATA[dir][soft]['versions'].append(version)
            if software_url=="":
              print "|**%s**|%s|<nobr>%s</nobr>|" % (soft," ".join(software_description.split()),'</br>'.join(software_versions))
            else:
              print "|**[%s](%s)**|%s|<nobr>%s</nobr>|" % (soft,software_url," ".join(software_description.split()),'</br>'.join(software_versions))
    #json_obj = json.dumps(HTML_SOURCE_DATA, sort_keys=True, indent=4)
    #push_to_portal(json_obj)
    #print json_obj