import json
import os
from pathlib import Path

from PyInquirer import prompt

from AbstractModule import AbstractModule


def get_vim_root():
    # return Path().home().joinpath(".vim")
    return Path(os.getcwd()).joinpath("devenv", ".vim")


class VimModule(AbstractModule):
    def __init__(self):
        super().__init__()
        self.json_config = {}
        with open("modules/vim/vimrc_conf.json") as plugins:
            self.json_config = json.load(plugins)

        self.plugins = self.json_config['plugins']
        self.settings = self.json_config['settings']

    def do_plugin_selection(self):
        mapped_list = []
        for choice in self.plugins.keys():
            mapped_list.append({
                "name": choice
            })

        print("Available Plugins:")
        module_selection = [
            {
                'type': 'checkbox',
                'message': 'Select plugins',
                'name': 'modules',
                'choices': mapped_list
            }
        ]
        return prompt(module_selection)['modules']

    def run(self):

        # Create necessary folder structure for vim
        os.makedirs(str(get_vim_root().joinpath("autoload")), exist_ok=True)
        os.makedirs(str(get_vim_root().joinpath("plugged")), exist_ok=True)

        selected_plugins = self.do_plugin_selection()
        default_settings = list(self.settings.values())
        # print out selected plugins
        print("\033[4mYour selection:\033[0m")
        [print(x) for x in selected_plugins]
        print("\n\033[4mDefault settings:\033[0m")
        [print(i) for i in default_settings]

        # Create vimrc file
        vimrc_path = str(get_vim_root().joinpath(".vimrc"))
        try:
            with open(vimrc_path, "r") as vimrc_file:
                vimrc_content = vimrc_file.readlines()
        except FileNotFoundError:
            vimrc_content = []

        try:
            index = vimrc_content.index("call plug#begin('~/.vim/plugged')\n") + 1
            for plugin in selected_plugins:
                vimrc_content.insert(index, self.plugins[plugin] + "\n")

        except ValueError:
            vimrc_content.append("call plug#begin('~/.vim/plugged')\n")
            for element in selected_plugins:
                vimrc_content.append(self.plugins[element] + "\n")
            vimrc_content.append("call plug#end()\n")

        default_settings.reverse()
        for setting in default_settings:
            vimrc_content.insert(0, setting + "\n")

        seen = set()
        seen_add = seen.add
        vimrc_content = [x1 for x1 in vimrc_content if not (x1 in seen or seen_add(x1))]

        with open(vimrc_path, "w") as vimrc_file:
            for line in vimrc_content:
                vimrc_file.write(line)

        # TODO: check if existing plugin manager file
        # TODO: else download plugin manager