# =============================================================================
# Copyright (C) 2014 Ryan Holmes
#
# This file is part of pyfa.
#
# pyfa is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# pyfa is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with pyfa.  If not, see <http://www.gnu.org/licenses/>.
# =============================================================================


from eos.db.gamedata.queries import getAttributeInfo, getDynamicItem
from gui.utils.numberFormatter import roundToPrec
from service.port.shared import fetchItem


def renderMutant(mutant, firstPrefix='', prefix=''):
    exportLines = []
    mutatedAttrs = {}
    for attrID, mutator in mutant.mutators.items():
        attrName = getAttributeInfo(attrID).name
        mutatedAttrs[attrName] = mutator.value
    exportLines.append('{}{}'.format(firstPrefix, mutant.baseItem.name))
    exportLines.append('{}{}'.format(prefix, mutant.mutaplasmid.item.name))
    # Round to 7th significant number to avoid exporting float errors
    customAttrsLine = ', '.join(
        '{} {}'.format(a, roundToPrec(mutatedAttrs[a], 7))
        for a in sorted(mutatedAttrs))
    exportLines.append('{}{}'.format(prefix, customAttrsLine))
    return '\n'.join(exportLines)


def parseMutant(lines):
    # Fetch base item type
    try:
        baseItemName = lines[0]
    except IndexError:
        return None
    baseItem = fetchItem(baseItemName.strip())
    if baseItem is None:
        return None, None, {}
    # Fetch mutaplasmid item type and actual item
    try:
        mutaplasmidName = lines[1]
    except IndexError:
        return baseItem, None, {}
    mutaplasmidItem = fetchItem(mutaplasmidName.strip())
    if mutaplasmidItem is None:
        return baseItem, None, {}
    mutaplasmidItem = getDynamicItem(mutaplasmidItem.ID)
    # Process mutated attribute values
    try:
        mutationsLine = lines[2]
    except IndexError:
        return baseItem, mutaplasmidItem, {}
    mutations = {}
    pairs = [p.strip() for p in mutationsLine.split(',')]
    for pair in pairs:
        try:
            attrName, value = pair.split(' ')
        except ValueError:
            continue
        try:
            value = float(value)
        except (ValueError, TypeError):
            continue
        attrInfo = getAttributeInfo(attrName.strip())
        if attrInfo is None:
            continue
        mutations[attrInfo.ID] = value
    return baseItem, mutaplasmidItem, mutations