#!/usr/bin/python2
import csv
import optparse
import signal
import sys
import os
try:
    signal.signal(signal.SIGPIPE, signal.SIG_DFL)
except AttributeError:
    pass

path = os.path.dirname(os.path.realpath(__file__))
path = os.path.realpath(os.path.join(path, '..', 'lib', 'python'))
if path.startswith('/opt'):
    sys.path.append(path)

import confluent.client as client
import confluent.sortutil as sortutil


def lookupdata(data, key):
    ret = data.get(key, {}).get('value', '')
    if ret is None:
        ret = ''
    return ret

def main():
    argparser = optparse.OptionParser(
    usage='''\n       %prog noderange -o xcatnodes.def
             \n ''')
    argparser.add_option('-o', '--output',
                         help='xCAT stanza file')
    argparser.add_option('-m', '--macs',
                         help='xCAT macs.csv to write')
    (options, args) = argparser.parse_args()
    try:
        noderange = args[0]
    except IndexError:
        argparser.print_help()
        sys.exit(1)
    if not (options.output or options.macs):
        sys.stderr.write('Output file must be specified by -o or -m\n')
        sys.exit(1)
    sess = client.Command()
    databynode = {}
    for res in sess.read('/noderange/{0}/attributes/all'.format(noderange)):
        for node in res.get('databynode', {}):
            if node not in databynode:
                databynode[node] = {}
            databynode[node].update(res['databynode'][node])
    if options.output:
        with open(options.output, 'w') as importfile:
            for node in sortutil.natural_sort(databynode):
                xcatattrs = collect_attribute_data(databynode, node)
                importfile.write('{0}:\n'.format(node))
                importfile.write('   objtype=node\n')
                importfile.write('   arch=x86_64\n')
                importfile.write('   netboot=xnba\n')
                importfile.write('   mgt=ipmi\n')
                for attr in xcatattrs:
                    if xcatattrs[attr] is None:
                        continue
                    importfile.write('   {0}={1}\n'.format(attr,
                                                           xcatattrs[attr]))
                importfile.write('\n')
    if options.macs:
        with open(options.macs, 'w') as importfile:
            macsv = csv.writer(importfile)
            macsv.writerow(['#node', 'mac'])
            for node in sortutil.natural_sort(databynode):
                xcatattrs = collect_attribute_data(databynode, node)
                macsv.writerow([node, xcatattrs['mac']])



def collect_attribute_data(databynode, node):
    data = databynode[node]
    xcatattrs = {}
    xcatattrs['groups'] = ','.join(data.get('groups', []))
    xcatattrs['bmc'] = data.get('hardwaremanagement.manager', {}).get(
        'value', None)
    if xcatattrs['bmc']:
        xcatattrs['bmc'] = xcatattrs['bmc'].split('/', 1)[0]
    xcatattrs['mpa'] = data.get('enclosure.manager', {}).get(
        'value', None)
    xcatattrs['slotid'] = data.get('enclosure.bay', {}).get(
        'value', None)
    gotmac = False
    for key in data:
        if key.startswith('net.') and 'hwaddr' in key:
            currmac = data[key].get('value', None)
            if currmac:
                if gotmac:
                    sys.stderr.write(
                        'Ignoring {0} and using only {1} for mac, '
                        'multiple macs not supported by '
                        'confluent2xcat\n'.format(key, gotmac))
                    continue
                gotmac = key
                xcatattrs['mac'] = currmac
    return xcatattrs


if __name__ == '__main__':
    main()