Improve structure in main.py, create requirements.txt and update README.

main.py

@@ -10,42 +10,53 @@ headers = {
     'x-api-key': os.getenv("CURSEFORGE_API_KEY")
 }
 
-input_name = input("Enter modpack name: ")
-response = requests.get(f'https://api.curseforge.com/v1/mods/search?gameId=432&searchFilter={input_name}', headers=headers)
-data = response.json()
 
+
+modpack_names = []
 found = False
 selected_modpack_id = -1
 
-modpack_names = []
-for mod in data['data']:
-    modpack_url = mod['links']['websiteUrl']
-    if modpack_url.startswith("https://www.curseforge.com/minecraft/modpacks/"):
-        modpack_names.append(mod['name'])
-        found = True
-    else:
-        pass
 
-if not found:
-    print("No modpack found with that name.")
-else:
-    pass
+def search_modpacks(query):
+    global data
+    global found
 
-if found == True:
-    questions = [
-    inquirer.List('name',
-                  message="Select a modpack",
-                  choices=modpack_names,
-            ),
-]
+    response = requests.get(f'https://api.curseforge.com/v1/mods/search?gameId=432&searchFilter={query}', headers=headers)
+    data = response.json()
+    for mod in data['data']:
+        modpack_url = mod['links']['websiteUrl']
+        if modpack_url.startswith("https://www.curseforge.com/minecraft/modpacks/"):
+            modpack_names.append(mod['name'])
+            found = True
+    if not found:
+        print("No modpack found with that name.")
+
+    return modpack_names
+
+
+def select_modpacks(modpack_names):
+
+    if found == True:
+        questions = [
+        inquirer.List('name',
+            message="Select a modpack",
+            choices=modpack_names
+        ),
+    ]
 
     answers = inquirer.prompt(questions)
 
+
     selected_modpack_name = answers['name']
     for mod in data['data']:
         if mod['name'] == selected_modpack_name:
             selected_modpack_id = mod['id']
-            selected_url = mod['links']['websiteUrl']
+
+    return selected_modpack_name, selected_modpack_id
+
+
+
+def download_modpack(selected_modpack_name, selected_modpack_id):
 
     r = requests.get(f"https://api.curseforge.com/v1/mods/{selected_modpack_id}/files", headers = headers)
     file_data = r.json()
@@ -66,3 +77,16 @@ if found == True:
         break
     else:
         print("No server pack found for this modpack.")
+
+
+if __name__ == "__main__":
+    print("Serverpack Downloader")
+
+    query = input("Enter Search Query: ")
+    modpack_names = search_modpacks(query)
+
+    selected_modpack_name, selected_modpack_id = select_modpacks(modpack_names)
+
+    download_modpack(selected_modpack_name, selected_modpack_id)
+
+