#!/usr/bin/env python3
"""
Silique (https://www.silique.fr)
Copyright (C) 2024

distribued with GPL-2 or later license

This program 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 2 of the License, or
(at your option) any later version.

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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
"""
from rougail.object_model import CONVERT_OPTION
from rougail.config import RougailConfig
from tiramisu.error import ValueOptionError

class RougailUserDataEnvironment:
    def __init__(self,
                 config: 'Config',
                 *,
                 rougailconfig: RougailConfig=None,
                 ):
        self.config = config
        if rougailconfig is None:
            rougailconfig = RougailConfig
            user_data = rougailconfig['step.user_data']
            if 'environment' not in user_data:
                user_data.append('environment')
                rougailconfig['step.user_data'] = user_data
        user_data = rougailconfig['step.user_data']
        if 'environment' not in user_data:
            raise Exception('environment is not set in step.user_data')
        self.rougailconfig = rougailconfig
        self.errors = []
        self.warnings = []

    def run(self):
        self.config.property.read_write()
        if self.rougailconfig['environment.mandatory']:
            current_titles = []
            while True:
                mandatories = self.config.value.mandatory()
                if not mandatories:
                    break
                mandatory = mandatories[0]
                path = mandatory.path()
                if '.' in path:
                    current_config = self.config
                    for idx, p in enumerate(path.split('.')[0:-1]):
                        current_config = current_config.option(p)
                        if idx < len(current_titles):
                            if current_titles[idx] == p:
                                continue
                            current_titles = current_titles[0:idx]
                        current_titles.append(p)
                        self.print(current_config.description(), idx)
                self.display_environment(mandatory)
        else:
            self.parse(self.config)
        self.config.property.read_only()

    def parse(self, config, title_level=0):
        for option in config:
            if option.isoptiondescription():
                self.print(option.description(), title_level)
                self.parse(option, title_level + 1)
            else:
                self.display_environment(option)

    def print(self, title, title_level):
        qprint(' ' * title_level + '📂 ' + title, 'bold')

    def display_environment(self, option):
        kwargs = {}
        option_type = option.information.get('type')
        isdefault = option.owner.isdefault()
        default = option.value.get()
        ismulti = option.ismulti()
        type_obj = None
        type_obj = CONVERT_OPTION.get(option_type, {}).get("func")
        RougailValidator.option = option
        RougailValidator.option_type = {'type': option_type,
                                        'func': type_obj,
                                        }
        RougailValidator.ismulti = ismulti
        if option_type == 'choice':
            question_funtion = select
            RougailValidator.default = default
            kwargs['choices'] = option.value.list()
        elif option_type == 'boolean':
            question_funtion = confirm
        elif option_type == 'secret' and not self.rougailconfig['environment.show_secrets']:
            question_funtion = password
        else:
            question_funtion = text
            kwargs['validate'] = RougailValidator
        args = ['📓 ' + option.description()]
        if ismulti:
            kwargs['multiline'] = True
            if default:
                kwargs['default'] = "\n".join(default)
        elif default is not None:
            kwargs['default'] = default
        value = RougailValidator().convert_value(question_funtion(*args, **kwargs).ask(), False)
        if isdefault and value == default:
            option.value.reset()
        else:
            option.value.set(value)


class RougailValidator(Validator):
    def validate(self, document):
        return self.convert_value(document.text)

    def convert_value(self,
                      document,
                      validate=True,
                      ):
        if not self.ismulti:
            value = self._convert_a_value(document, document, validate)
        else:
            value = []
            if document is not None:
                for val in document.strip().split('\n'):
                    val = self._convert_a_value(val, document, validate)
                    if val is not None:
                        value.append(val)
        if validate:
            try:
                self.option.value.set(value)
            except ValueOptionError as err:
                err.prefix = ''
                raise ValidationError(
                    message=str(err),
                    cursor_position=len(document),
                )
        return value

    def _convert_a_value(self, value, document, validate):
        if value is None:
            if self.option_type['type'] == 'choice':
                return self.default
            return
        if isinstance(value, str):
            value = value.strip()
        if value == '':
            if validate and "mandatory" in self.option.property.get():
                raise ValidationError(
                    message=f"Value must not be empty",
                    cursor_position=len(document),
                )
            return
        if self.option_type['func']:
            try:
                return self.option_type['func'](value)
            except:
                raise ValidationError(
                    message=f"Not a valid {self.option_type['type']}",
                    cursor_position=len(document),
                )
        return value