From f3fafd67f085265a02881ca01474e2b4555495c2 Mon Sep 17 00:00:00 2001
From: Alexander Hayden <alexhayden25@gmail.com>
Date: Sat, 28 Nov 2020 02:11:49 -0500
Subject: add path generation

---
 modpackman.py |  2 +-
 util.py       | 24 ++++++++++++++++++------
 whitelist.txt |  1 -
 3 files changed, 19 insertions(+), 8 deletions(-)
 delete mode 100644 whitelist.txt

diff --git a/modpackman.py b/modpackman.py
index 6e23792..55ebea6 100755
--- a/modpackman.py
+++ b/modpackman.py
@@ -30,7 +30,7 @@ if __name__ == "__main__":
 
     # run the command
     if args.command == "install":
-        util.install("version.txt", pack["whitelist"], pack['location'])
+        util.install("version.txt", pack["whitelist"], os.path.join(pack['location'], 'mods'))
     elif args.command == "apply_updates":
         util.apply_updates(mods, "version.txt", pack["game_version"])
     elif args.command == "check_updates":
diff --git a/util.py b/util.py
index ed63631..3e9e918 100644
--- a/util.py
+++ b/util.py
@@ -7,6 +7,7 @@ import re
 import collections
 import urllib.parse
 import multiprocessing
+import pathlib
 from configparser import ConfigParser
 
 import requests
@@ -29,9 +30,16 @@ def load_config():
     
     config["pack"]["game_version"] = game_version_from_string(config["pack"]["game_version"])
 
-    #TODO generate a default pack location
     if "location" not in config["pack"]:
-        config["pack"]["location"] = f"/tmp/{config['pack']['sanitized_name']}"
+        if sys.platform == "linux":
+            config["pack"]["location"] = os.path.join(os.path.expanduser('~'), ".minecraft", config['pack']['sanitized_name'])
+        elif sys.platform == "win32":
+            config["pack"]["location"] = os.path.join(os.environ["APPDATA"], ".minecraft", config['pack']['sanitized_name'])
+        elif sys.platform == "darwin":
+            config["pack"]["location"] = os.path.join(os.path.expanduser('~'), "Library", "Application Support", "minecraft", config['pack']['sanitized_name'])
+        else:
+            raise RuntimeError(f"Unsupported operating system `{sys.platform}`. Please define a location for the pack in your `local-config.ini` file")
+
     # return the whole config file, pack configuration and modlist
     return config
 
@@ -80,10 +88,14 @@ def game_version_from_string(string):
 
 
 # Apply updates to the actual mod pack
-def install(version_file, whitelist, pack_location):
+def install(version_file, whitelist, mods_location):
     pack_version = get_version_from_file(version_file)
     print("Updating pack with version " + str(pack_version) + "...")
     print()
+
+    # create the mods folder if it doesn't already exist
+    pathlib.Path(mods_location).mkdir(parents=True, exist_ok=True)
+
     # (fname, checksum, url)
     mods = read_file(version_file)
     names = [mod[0] for mod in mods]
@@ -92,7 +104,7 @@ def install(version_file, whitelist, pack_location):
 
     i = 0
     for mod in mods:
-        mod_path = os.path.join(pack_location, mod[0])
+        mod_path = os.path.join(mods_location, mod[0])
         i += 1
         if os.path.exists(mod_path) and os.path.isfile(mod_path) and \
         hashlib.sha1(open(mod_path, 'rb').read()).hexdigest() == mod[1]:
@@ -107,9 +119,9 @@ def install(version_file, whitelist, pack_location):
 
     print()
     print("Removing old mods...")
-    for jar in os.listdir(pack_location):
+    for jar in os.listdir(mods_location):
         if jar not in names and os.path.splitext(jar)[1] == ".jar":
-            os.remove(os.path.join(pack_location, jar))
+            os.remove(os.path.join(mods_location, jar))
             print("Removing '{jar}'".format(jar=jar))
 
     print()
diff --git a/whitelist.txt b/whitelist.txt
deleted file mode 100644
index 76c8d1f..0000000
--- a/whitelist.txt
+++ /dev/null
@@ -1 +0,0 @@
-# file names in here are NOT removed from mods folder during 'install'
-- 
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