# -*- coding: utf-8 -*-
#
# This file is part of SENAITE.CORE.
#
# SENAITE.CORE 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, version 2.
#
# This program 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
# this program; if not, write to the Free Software Foundation, Inc., 51
# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Copyright 2018-2020 by it's authors.
# Some rights reserved, see README and LICENSE.

from AccessControl import ClassSecurityInfo
from App.class_init import InitializeClass
from Products.Archetypes.Registry import registerField
from Products.Archetypes.Registry import registerPropertyType
from Products.PythonScripts.standard import html_quote
from senaite.core.browser.fields.record import RecordField
from senaite.core.browser.widgets.recordswidget import RecordsWidget


class RecordsField(RecordField):
    """A field that stores a 'record' (dictionary-like) construct

    This field is ported from Products.ATExtensions
    """
    _properties = RecordField._properties.copy()
    _properties.update({
        "type": "records",
        "default": [],
        "fixedSize": 0,
        "minimalSize": 0,
        "maximalSize": 9999,
        "innerJoin": " ",
        "outerJoin": ", ",
        "widget": RecordsWidget,
        })

    security = ClassSecurityInfo()

    def getSize(self, instance):
        """number of records to store"""
        return len(self.getRaw(instance))

    def isSizeFixed(self):
        """do we need an additional line of entry?"""
        return self.fixedSize

    def showMore(self, values):
        """
        return True if the 'More' button should be shown
        False otherwise
        """
        data_length = len(values)
        if data_length < self.maximalSize and not self.fixedSize:
            return True
        else:
            return False

    def getEditSize(self, instance):
        """
        number of record entries to offer in the form
        at least 'minimalSize' or length of the current
        list of records (+1 if 'more' is enabled)
        """
        data_length = len(self.getRaw(instance))
        minimum = max(self.minimalSize, data_length)
        if minimum >= self.maximalSize:
            return minimum  # not to lose data if uploads had added more
        if not self.fixedSize:
            return minimum + 1
        return minimum

    def getSubfieldValue(self, values, idx, subfield, default=None):
        """
        return values[idx].get(key) if existing
        'default' otherwise
        """
        try:
            return values[idx].get(subfield, default)
        except IndexError:
            return default

    def getViewFor(self, instance, idx, subfield, joinWith=', '):
        """
        formatted value of the subfield for display
        """
        raw = self.getRaw(instance)[idx].get(subfield, '')
        if type(raw) in (type(()), type([])):
            raw = joinWith.join(raw)
        # Prevent XSS attacks by quoting all user input
        raw = html_quote(str(raw))
        # this is now very specific
        if subfield == 'email':
            return self.hideEmail(raw, instance)
        if subfield == 'homepage':
            return '<a href="%s">%s</a>' % (raw, raw)
        return raw.strip()

    # store string type subfield values as unicode

    def _encode_strings(self, value, instance, **kwargs):
        new_value = []
        for entry in value:
            new_value.append(
                RecordField._encode_strings(self, entry, instance, **kwargs)
                )
        return new_value

    def _decode_strings(self, value, instance, **kwargs):
        new_value = []
        for entry in value:
            new_value.append(
                RecordField._decode_strings(self, entry, instance, **kwargs)
                )
        return new_value

    # convert the records to persistent dictionaries
    def _to_dict(self, value):
        if type(value) != list or type(value) !=tuple:
            if type(value) == dict:
                value = [value]
            elif type(value) == str:
                try:
                    value = eval(value.replace('}\n', '},'))
                except Exception:
                    pass
        return [RecordField._to_dict(self, entry) for entry in value]

    security.declarePublic('validate')

    def validate(self, value, instance, errors={}, **kwargs):
        """
        Validate passed-in value using all subfield validators.
        Return None if all validations pass; otherwise, return failed
        result returned by validator
        """
        name = self.getName()
        if errors and errors.has_key(name):
            return True

        result = None
        for record in value:
            result = RecordField.validate(self,
                                          record,
                                          instance,
                                          errors={},
                                          **kwargs
            )
            if result: return result
        return result


InitializeClass(RecordsField)

registerField(
    RecordsField,
    title="Records",
    description="Used for storing a list of records")

registerPropertyType("subfields", "lines", RecordsField)
registerPropertyType("required_subfields", "lines", RecordField)
registerPropertyType("subfield_validators", "mapping", RecordField)
registerPropertyType("subfield_types", "mapping", RecordsField)
registerPropertyType("subfield_vocabularies", "mapping", RecordsField)
registerPropertyType("subfield_labels", "mapping", RecordsField)
registerPropertyType("subfield_sizes", "mapping", RecordsField)
registerPropertyType("subfield_maxlength", "mapping", RecordsField)
registerPropertyType("innerJoin", "string", RecordsField)
registerPropertyType("fixedSize", "boolean", RecordsField)
registerPropertyType("minimalSize", "int", RecordsField)
registerPropertyType("maximalSize", "int", RecordsField)
