import os
import sys
import hashlib
import json
from pprint import pprint
from configparser import ConfigParser


def calculate_md5(file_path):
    hash_md5 = hashlib.md5()
    with open(file_path, "rb") as f:
        for chunk in iter(lambda: f.read(4096), b""):
            hash_md5.update(chunk)
    return hash_md5.hexdigest()

def get_file_size(file_path):

    return os.stat(file_path).st_size

def read_config(config_path):
    config = ConfigParser()
    config.read(config_path)
    return config


def temp_forge_json():
    with open('temp_forge.json') as json_file:
        data = json.load(json_file)
    return data

def temp_forge_libs_json():
    with open('temp_forge_libs.json') as json_file:
        data = json.load(json_file)
    return data


def generate_forge_list(forge_path, download_url):
    forge_jar = scan_forge_folder(forge_path)
    forge_full_path = os.path.join(forge_path, forge_jar)
    #forge_submodules_list = generate_lib_list(os.path.join(forge_path, 'libs'), download_url)
    forge_submodules_list = temp_forge_libs_json()
    forge_module = [{
        'id': 'net.minecraftForge:forge:' + forge_jar[:-4],
        'name': 'Minecraft Forge',
        'type': 'ForgeHosted',
        'artifact': {
            'size': get_file_size(forge_full_path),
            'MD5': calculate_md5(forge_full_path),
            'url': download_url + 'forge/' + forge_jar
        },
        'subModules': forge_submodules_list
    }]
    forge_module = [temp_forge_json()]
    return forge_module


def parse_servers_config(config: ConfigParser):
    servers = []

    for section in config.sections():
        if section.split(' ')[0] == 'Server' or section.split(' ')[0] == 'server':
            download_url = config.get(section, 'download_url')
            server_mods_path = os.path.join(config.get(section, 'path'), 'mods')
            server_client_mods_path = config.get(section, 'client_mods_path')
            forge_path = config.get(section, 'forge_reference_folder')

            forge_required_modules = generate_mod_list(server_mods_path, download_url, True)
            forge_optionals_modules = []# generate_mod_list(server_client_mods_path, download_url, False)
            forge_libs = generate_forge_list(forge_path, download_url)
            new_server_modules = forge_libs + forge_required_modules + forge_optionals_modules

            new_server = {'id': (config.get(section, 'id')),
                          'name': (config.get(section, 'name')),
                          'description': (config.get(section, 'description')),
                          'icon': (config.get(section, 'icon')),
                          'version': (config.get(section, 'version')),
                          'address': (config.get(section, 'address')),
                          'minecraftVersion': (config.get(section, 'minecraftVersion')),
                          'discord_shortId': (config.get(section, 'discord_shortId')),
                          'discord_largeImageText': (config.get(section, 'discord_largeImageText')),
                          'discord_largeImageKey': (config.get(section, 'discord_largeImageKey')),
                          'mainServer': (config.get(section, 'mainServer')),
                          'autoconnect': (config.get(section, 'autoconnect')),
                          #'_path': (config.get(section, 'path'))
                          #'_download_url': download_url,
                          'modules': new_server_modules
                          }
            servers.append(new_server)
    return servers


def scan_forge_folder(forge_path):
    forge_jar = list_files_in_folder(forge_path)[0]
    return forge_jar


def list_files_in_folder(path):
    f = []
    for (dirpath, dirnames, filenames) in os.walk(path):
        f.extend(filenames)
        break
    return f


def get_mod_name(mod_id):
    try:
        return config.get('Mods Names', mod_id)
    except:
        print("No mod name for " + mod_id)
        return mod_id


def generate_mod_list(mods_path, download_url, isRequired):
    mods_file_list = list_files_in_folder(os.path.join(mods_path))
    mod_list = []
    for mod_file_name in mods_file_list:
        path_to_mod = os.path.join(mods_path, mod_file_name)
        parsed_mod = mod_file_name[:-4]
        parsed_mod = parsed_mod.split(':')
        mod_id = parsed_mod[1]

        if parsed_mod[-1] is not None:
            if parsed_mod[-1] == 'ServerSide':
                continue
        new_mod = {
            'id': mod_file_name[:-4],
            'name': get_mod_name(parsed_mod[1]),
            'type': 'ForgeMod',
            'required': isRequired,
            'artifact': {'size': get_file_size(path_to_mod),
                         'MD5': calculate_md5(path_to_mod),
                         'url': download_url + 'mods/' + mod_file_name
                         }
        }
        mod_list.append(new_mod)
    return mod_list


def generate_lib_list(libs_path, download_url):
    libs_file_list = list_files_in_folder(os.path.join(libs_path))
    lib_list = []
    for lib_file_name in libs_file_list:
        path_to_lib = os.path.join(libs_path, lib_file_name)


        if lib_file_name[-2:] == 'xz':
            lib_name = lib_file_name[:-12] + "@jar.pack.xz"
        else:
            lib_name = lib_file_name[:-4]

        new_lib = {
            'id': lib_name,
            'name': lib_name,
            'type': 'Library',
            'artifact': {'size': get_file_size(path_to_lib),
                         'MD5': calculate_md5(path_to_lib),
                         'url': download_url + 'libs/' + lib_file_name
                         }
        }
        lib_list.append(new_lib)
    return lib_list


def generate_json(config: ConfigParser):
    new_distribution = {
        'version': (config.get('Basic', 'version')),
        'discord': {
            'clientId': (config.get('Basic', 'version')),
            'smallImageText': (config.get('Basic', 'discord_smallImageText')),
            'smallImageKey': (config.get('Basic', 'dicord_smallImageKey'))
        },
        'java': {
            'oracle': (config.get('Basic', 'java'))
        },
        'rss': (config.get('Basic', 'rss')),
        'servers': parse_servers_config(config)
    }
    return new_distribution


if __name__ == '__main__':
    temp_forge_json()
    config = read_config(sys.argv[1])
    distribution = generate_json(config)

    # pprint(distribution)

    with open('distribution.json', 'w', encoding='utf-8') as f:
        print("print distribution to " + f.name)
        json.dump(distribution, f, ensure_ascii=False, indent=4)