From 860be444d706c31e9e96c564fc0274806c9e2882 Mon Sep 17 00:00:00 2001
From: Charles Danesi <charles@charlesdanesi.net>
Date: Sun, 14 Dec 2025 07:57:39 -0500
Subject: [PATCH] initial commit

---
 .gitignore          |  2 +
 README.md           |  1 +
 example-config.json | 27 +++++++++++++
 mod_updater.py      | 92 +++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 122 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 README.md
 create mode 100644 example-config.json
 create mode 100644 mod_updater.py

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..75a29fb
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+.DS_Store
+downloads/**
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..15934cb
--- /dev/null
+++ b/README.md
@@ -0,0 +1 @@
+# mod-updater
diff --git a/example-config.json b/example-config.json
new file mode 100644
index 0000000..257268c
--- /dev/null
+++ b/example-config.json
@@ -0,0 +1,27 @@
+{
+  "server1": {
+    "mc_version": "1.21.10",
+    "loader": "fabric",
+    "mods": [
+      "fabric-api",
+      "lithium",
+      "placeholder-api",
+      "rei",
+      "spark",
+      "simple-voice-chat"
+    ]
+  },
+  "server2": {
+    "mc_version": "1.19.2",
+    "loader": "fabric",
+    "mods": [
+      "dynmap",
+      "fabric-api",
+      "lithium",
+      "phosphor",
+      "placeholder-api",
+      "spark",
+      "simple-voice-chat"
+    ]
+  }
+}
diff --git a/mod_updater.py b/mod_updater.py
new file mode 100644
index 0000000..59f122c
--- /dev/null
+++ b/mod_updater.py
@@ -0,0 +1,92 @@
+import json
+import os
+
+import requests
+
+CONFIG_FILE = "config.json"
+OUTPUT_DIR = "downloads"
+
+MODRINTH_API = "https://api.modrinth.com/v2"
+
+
+def load_config():
+    with open(CONFIG_FILE, "r") as f:
+        return json.load(f)
+
+
+def get_mod_project(mod_id):
+    """Fetch project info from Modrinth by slug or ID."""
+    url = f"{MODRINTH_API}/project/{mod_id}"
+    r = requests.get(url)
+    if r.status_code != 200:
+        print(f"[!] Failed to get project: {mod_id}")
+        return None
+    return r.json()
+
+
+def get_latest_version(project_id, mc_version, loader):
+    """Fetch latest version compatible with the MC version + loader."""
+    url = f"{MODRINTH_API}/project/{project_id}/version"
+    params = {"game_versions": f'["{mc_version}"]', "loaders": f'["{loader}"]'}
+    r = requests.get(url, params=params)
+    if r.status_code != 200 or len(r.json()) == 0:
+        print(f"[!] No compatible versions for {project_id}")
+        return None
+
+    # First entry is latest
+    return r.json()[0]
+
+
+def download_file(url, dest):
+    r = requests.get(url, stream=True)
+    if r.status_code != 200:
+        print(f"[!] Failed to download: {url}")
+        return
+    with open(dest, "wb") as f:
+        for chunk in r.iter_content(8192):
+            f.write(chunk)
+
+
+def update_server(name, settings):
+    mc_version = settings["mc_version"]
+    loader = settings["loader"]
+    mods = settings["mods"]
+
+    print(f"\n=== Updating {name} ===")
+    out_dir = os.path.join(OUTPUT_DIR, name)
+    os.makedirs(out_dir, exist_ok=True)
+
+    for mod in mods:
+        print(f"\n→ {mod}")
+
+        project = get_mod_project(mod)
+        if not project:
+            continue
+
+        project_id = project["id"]
+        version = get_latest_version(project_id, mc_version, loader)
+        if not version:
+            continue
+
+        file_info = version["files"][0]
+        filename = file_info["filename"]
+        url = file_info["url"]
+
+        dest = os.path.join(out_dir, filename)
+        print(f"   Downloading {filename}...")
+        download_file(url, dest)
+
+    print(f"\n✔ Finished {name}")
+
+
+def main():
+    config = load_config()
+
+    for server_name, settings in config.items():
+        update_server(server_name, settings)
+
+    print("\nAll mods updated!")
+
+
+if __name__ == "__main__":
+    main()