# Export to Trade Dangerous

import time
from collections import defaultdict
from operator import itemgetter
from os.path import join
from platform import system
from sys import platform

from config import applongname, appversion, config

# These are specific to Trade Dangerous, so don't move to edmc_data.py
demandbracketmap = { 0: '?',
                     1: 'L',
                     2: 'M',
                     3: 'H', }
stockbracketmap =  { 0: '-',
                     1: 'L',
                     2: 'M',
                     3: 'H', }

def export(data):

    querytime = config.get_int('querytime', default=int(time.time()))

    #
    #  When this is refactored into multi-line CHECK IT WORKS, avoiding the
    #  brainfart we had with dangling commas in commodity.py:export() !!!
    #
    filename = join(config.get_str('outdir'), '%s.%s.%s.prices' % (data['lastSystem']['name'].strip(), data['lastStarport']['name'].strip(), time.strftime('%Y-%m-%dT%H.%M.%S', time.localtime(querytime))))
    #
    #  When this is refactored into multi-line CHECK IT WORKS, avoiding the
    #  brainfart we had with dangling commas in commodity.py:export() !!!
    #

    timestamp = time.strftime('%Y-%m-%d %H:%M:%S', time.strptime(data['timestamp'], '%Y-%m-%dT%H:%M:%SZ'))

    # Format described here: https://bitbucket.org/kfsone/tradedangerous/wiki/Price%20Data
    h = open(filename, 'wb')	# codecs can't automatically handle line endings, so encode manually where required
    h.write('#! trade.py import -\n# Created by {appname} {appversion} on {platform} for Cmdr {cmdr}.\n'
            '#\n#    <item name>             <sellCR> <buyCR>   <demand>   <stock>  <timestamp>\n\n'
            '@ {system}/{starport}\n'.format(
                appname=applongname,
                appversion=appversion(),
                platform=platform == 'darwin' and "Mac OS" or system(),
                cmdr=data['commander']['name'].strip(),
                system=data['lastSystem']['name'].strip(),
                starport=data['lastStarport']['name'].strip()
    ).encode('utf-8'))

    # sort commodities by category
    bycategory = defaultdict(list)
    for commodity in data['lastStarport']['commodities']:
        bycategory[commodity['categoryname']].append(commodity)

    for category in sorted(bycategory):
        h.write('   + {}\n'.format(category).encode('utf-8'))
        # corrections to commodity names can change the sort order
        for commodity in sorted(bycategory[category], key=itemgetter('name')):
            h.write('      {:<23} {:7d} {:7d} {:9}{:1} {:8}{:1}  {}\n'.format(
                commodity['name'],
                int(commodity['sellPrice']),
                int(commodity['buyPrice']),
                int(commodity['demand']) if commodity['demandBracket'] else '',
                demandbracketmap[commodity['demandBracket']],
                int(commodity['stock']) if commodity['stockBracket'] else '',
                stockbracketmap[commodity['stockBracket']],
                timestamp).encode('utf-8'))

    h.close()