# -*- coding: utf-8 -*-
# This file is part of the cashbook-module from m-ds for Tryton.
# The COPYRIGHT file at the top level of this repository contains the
# full copyright notices and license terms.

from trytond.pool import PoolMeta, Pool
from trytond.i18n import gettext
from decimal import Decimal


class InvestmentEvaluation(metaclass=PoolMeta):
    __name__ = 'cashbook_report.evaluation'

    @classmethod
    def get_sel_etype(cls):
        """ get list of evaluation-types
        """
        result = super(InvestmentEvaluation, cls).get_sel_etype()
        result.extend([
            ('cashbooks_gldiff', gettext('cashbook_report.msg_dtype_cashbook_gldiff')),
            ('cashbooks_glperc', gettext('cashbook_report.msg_dtype_cashbook_glperc')),
            ('cashbooks_glvalue', gettext('cashbook_report.msg_dtype_cashbooks_glvalue')),
            ('category_gldiff', gettext('cashbook_report.msg_dtype_category_gldiff')),
            ('category_glvalue', gettext('cashbook_report.msg_dtype_category_glvalue')),
            ('category_glperc',  gettext('cashbook_report.msg_dtype_category_glperc')),
            ('types_gldiff', gettext('cashbook_report.msg_dtype_types_gldiff')),
            ('types_glvalue', gettext('cashbook_report.msg_dtype_types_glvalue')),
            ('types_glperc',  gettext('cashbook_report.msg_dtype_types_glperc')),
            ])
        return result

# end InvestmentEvaluation


class InvestmentLine(metaclass=PoolMeta):
    __name__ = 'cashbook_report.eval_line'

    def get_value_types_glperc(self):
        """ get percent of profit/loss by type
        """
        if self.dtype is None:
            return None

        return self.get_percent_by_query([
            ('btype.id', '=', self.dtype.id),
            ])

    def get_value_category_glperc(self):
        """ get percent of profit/loss by category
        """
        if self.category is None:
            return None

        return self.get_percent_by_query([
            ('categories.id', '=', self.category.id),
            ])

    def get_percent_by_query(self, query):
        """ get percentual difference of bookings in categories
            converted to currency of evaluation
        """
        Book = Pool().get('cashbook.book')

        query2 = [('state', '=', 'open')]
        query2.extend(query)
        books = Book.search(query2)

        value = Decimal('0.0')
        amount = Decimal('0.0')

        if len(books) > 0:
            value = sum([x.current_value_ref for x in books
                if (x.current_value_ref is not None) and (x.feature == 'asset')])
            amount = sum([x.balance_ref for x in books
                if (x.balance_ref is not None) and (x.feature == 'asset')])
            if amount != Decimal('0.0'):
                return self.convert_to_evalcurrency(
                        books[0].company.currency,
                        Decimal('100.0') * value / amount - Decimal('100.0'),
                    )
        return Decimal('0.0')

    def get_value_types_glvalue(self):
        """ get current value by type
        """
        if self.dtype is None:
            return None

        return self.get_currentvalue_by_query([
            ('btype.id', '=', self.dtype.id),
            ])

    def get_value_category_glvalue(self):
        """ get current value by category
        """
        if self.category is None:
            return None

        return self.get_currentvalue_by_query([
            ('categories.id', '=', self.category.id),
            ])

    def get_currentvalue_by_query(self, query):
        """ get current value of bookings in categories
            converted to currency of evaluation
        """
        Book = Pool().get('cashbook.book')

        query2 = [('state', '=', 'open')]
        query2.extend(query)
        books = Book.search(query2)

        result = Decimal('0.0')
        if len(books) > 0:
            for book in books:
                if book.feature == 'asset':
                    if book.current_value_ref is not None:
                        result += book.current_value_ref
                else :
                    if book.balance_ref is not None:
                        result += book.balance_ref
            return self.convert_to_evalcurrency(
                    books[0].company.currency, result)
        return result

    def get_value_types_gldiff(self):
        """ get difference amount by type
        """
        if self.dtype is None:
            return None

        return self.get_difference_by_query([
            ('btype.id', '=', self.dtype.id),
            ])

    def get_value_category_gldiff(self):
        """ get difference amount by category
        """
        if self.category is None:
            return None

        return self.get_difference_by_query([
            ('categories.id', '=', self.category.id),
            ])

    def get_difference_by_query(self, query):
        """ get difference amount of bookings in categories
            converted to currency of evaluation
        """
        Book = Pool().get('cashbook.book')

        query2 = [('state', '=', 'open')]
        query2.extend(query)
        books = Book.search(query2)

        result = Decimal('0.0')
        if len(books) > 0:
            result = sum([x.current_value_ref - x.balance_ref for x in books
                if (x.current_value_ref is not None) and \
                    (x.balance_ref is not None) and \
                    (x.feature == 'asset')])
            result = self.convert_to_evalcurrency(
                    books[0].company.currency, result)
        return result

    def get_value_cashbooks_gldiff(self):
        """ amount of profit/loss of cashbooks
        """
        Currency = Pool().get('currency.currency')

        if self.cashbook:
            if self.cashbook.feature == 'asset':
                return self.convert_to_evalcurrency(
                        self.cashbook.currency,
                        self.cashbook.diff_amount)
            else :
                return Decimal('0.0')

    def get_value_cashbooks_glvalue(self):
        """ current value of cashbooks
        """
        Currency = Pool().get('currency.currency')

        if self.cashbook:
            if self.cashbook.feature == 'asset':
                return self.convert_to_evalcurrency(
                        self.cashbook.currency,
                        self.cashbook.current_value)
            else :
                return self.convert_to_evalcurrency(
                        self.cashbook.currency,
                        self.cashbook.balance_ref)

    def get_value_cashbooks_glperc(self):
        """ percent of profit/loss of cashbooks
        """
        if self.cashbook:
            if self.cashbook.feature == 'asset':
                return self.cashbook.diff_percent
            else :
                return Decimal('0.0')

# end InvestmentLine