Create installation_wizard.py (#10)

* Create the installation wizard for Windows, MacOS and Linux.
* Added download and unziping latest release feature.

installation_wizard.py

@@ -0,0 +1,72 @@
+# -*- coding:utf-8 -*-
+from json import loads
+import os
+from time import time
+import urllib.request as dlurl
+from zipfile import ZipFile
+
+# Save the name of the directory and the path to it into variables
+directory = 'minecraft_datapacks_generator'
+folder = f'C:\\Users\\{os.getlogin()}\\AppData\\Local\\Programs\\Python\\Python39\\Lib' if os.name == 'nt' else '/usr/lib/python3.9'
+exist = os.path.exists(f'{folder}\\{directory}') and os.path.isdir(f'{folder}\\{directory}')
+
+def ask_user(querry):
+    return input(f'{querry}? [yes/no]: ')[0].lower() == 'y'
+
+# Scan the user computer
+if exist:
+    print(f'Found at: {folder}\\{directory}, replace this version with the latest release.')
+else:
+    print('Unable to find the library.')
+    if ask_user('Do you want to scan your computer to look for the folder'):
+        found = False
+        directory_list = str(folder + '\\site-packages').split('\\')
+        tree = ['\\'.join(directory_list[:i + 1]) for i in range(len(directory_list))][::-1]
+
+        try:
+            time0 = time()
+            HDDs = tree + [e + ':\\' for e in 'CDEFGHIJK' if os.path.exists(e + ':\\')]
+
+            for HDD in HDDs:
+                if not found:
+                    for path, dirs, files in os.walk(HDD):
+                        if folder + '\\' + directory in path:
+                            found = True
+                            print(f'Found at: {path} in {time() - time0:0.1} seconds.')
+                            break
+        except OSError as e:
+            print(e)
+        else:
+            print(f'Paste the "minecraft_datapack_generator" folder in here: {folder}\\{directory}.')
+
+# Download the latest version
+try:
+    resp = dlurl.urlopen(f'https://api.github.com/repos/Vianpyro/{directory}/releases')
+    data = loads(resp.read())[0]
+    version = data['tag_name']
+
+    if ask_user(f'Would you like to download the latest version ({version})'):
+        try:
+            print(f'Downloading {directory} {version}...')
+            dlurl.urlretrieve(f'https://github.com/Vianpyro/{directory}/archive/{version}.zip', f'{directory}.zip')
+            print(f'Successfully downloaded {directory} {version}.')
+
+            print(f'Unziping {directory} {version}...')
+            with ZipFile(f'{directory}.zip', 'r') as zipf:
+                zipf.extractall(f'{folder}')
+                zipf.close()
+                os.remove(f'{directory}.zip')
+                if exist:
+                    print(
+                        f'Successfully extracted {directory} {version} in "{folder}".',
+                        f'\nYou now have to delete the old version of the library and rename the most recent one "{directory}".'
+                    )
+                else:
+                    os.rename(f'{folder}\\{directory}-{version}', f'{folder}\\{directory}')
+                    print(f'Successfully extracted and installed {directory} {version} in "{folder}".')
+        except:
+            print(f'Unable to download and/or extract "https://github.com/Vianpyro/{directory}/archive/{version}.zip"')
+except:
+    print('Unable to resolve host name.')
+
+input('Press "enter" to close this window.')