#!/usr/bin/python2
#
#    Copyright (C) 2015 vmware inc.
#
#    Author: Mahmoud Bassiouny <mbassiouny@vmware.com>

import json
import os
import curses
from sets import Set
from jsonwrapper import JsonWrapper
from menu import Menu
from window import Window
from actionresult import ActionResult

class PackageSelector(object):
    def __init__(self,  maxy, maxx, install_config, options_file):
        self.install_config = install_config
        self.maxx = maxx
        self.maxy = maxy
        self.win_width = 50
        self.win_height = 13

        self.win_starty = (self.maxy - self.win_height) / 2
        self.win_startx = (self.maxx - self.win_width) / 2

        self.menu_starty = self.win_starty + 3

        self.load_package_list(options_file)

        self.window = Window(self.win_height, self.win_width, self.maxy, self.maxx, 'Select Installation', True, self.package_menu)

    @staticmethod
    def get_packages_to_install(options, config_type, output_data_path):
        package_list = []
        for install_option in options:
            if install_option[0] == config_type:
                for include_type in install_option[1]["include"]:
                    package_list = package_list + PackageSelector.get_packages_to_install(options, include_type, output_data_path)
                json_wrapper_package_list = JsonWrapper(os.path.join(output_data_path, install_option[1]["file"]))
                package_list_json = json_wrapper_package_list.read()
                package_list = package_list + package_list_json["packages"]
                break
        return package_list

    @staticmethod
    def get_additional_files_to_copy_in_iso(options, base_path, config_type):
        additional_files = []
        for install_option in options:
            if install_option[0] == config_type:
                if install_option[1].has_key("additional-files"):
                    additional_files = install_option[1]["additional-files"]
                break
        return additional_files

    def load_package_list(self, options_file):
        json_wrapper_option_list = JsonWrapper(options_file)
        option_list_json = json_wrapper_option_list.read()
        options_sorted = option_list_json.items()

        self.package_menu_items = []
        base_path = os.path.dirname(options_file)
        package_list = []

        default_selected = 0
        visible_options_cnt = 0
        for install_option in options_sorted:
            if install_option[1]["visible"] == True:
                package_list = PackageSelector.get_packages_to_install(options_sorted, install_option[0], base_path)
                additional_files = PackageSelector.get_additional_files_to_copy_in_iso(options_sorted, base_path, install_option[0])
                self.package_menu_items.append((install_option[1]["title"], self.exit_function, [install_option[0], package_list, additional_files] ))
                if install_option[0] == 'minimal':
                    default_selected = visible_options_cnt
                visible_options_cnt = visible_options_cnt + 1


        self.package_menu = Menu(self.menu_starty,  self.maxx, self.package_menu_items, default_selected = default_selected)

    def exit_function(self,  selected_item_params):
        self.install_config['type'] = selected_item_params[0];
        self.install_config['packages'] = selected_item_params[1];
        self.install_config['additional-files'] = selected_item_params[2]
        return ActionResult(True, {'custom': False})

    def custom_packages(self, params):
        return ActionResult(True, {'custom': True})

    def display(self, params):
        return self.window.do_action()