Add python skin update script (#48)

README.md

@@ -18,7 +18,9 @@ This Minetest mod offers changeable player skins with a graphical interface for
 
 ## Installing skins
 
-### Download from the database
+### Download from the [database](http://minetest.fensta.bplaced.net/)
+
+#### Ingame Downloader
 
 1) Get Minetest 5.1.0-dev-cb00632 or newer
 2) Start your world
@@ -28,6 +30,16 @@ This Minetest mod offers changeable player skins with a graphical interface for
 
 You might want to run `minetest` in a Terminal/Console window to check the log output instantly.
 
+#### Python Download script
+
+**Requirements:**
+
+ * Python 3
+ * `requests` library: `pip3 install requests`  
+ 
+Go to the updater folder of this mod and run `python3 update_skins.py`  
+The Script will download all the skins from the database for you.
+
 ### Manual addition
 
 1) Copy your skin textures to `textures` as documented in `textures/readme.txt`

updater/update_skins.py

@@ -0,0 +1,44 @@
+import sys, requests, base64
+
+print("Downloading skins from minetest.fensta.bplaced.net ...")
+# Requesting all skins and their raw texture using the API
+r = requests.get('http://minetest.fensta.bplaced.net/api/v2/get.json.php?getlist&page=1&per_page=999999999')
+
+if r.status_code != 200:
+    sys.exit("Request failed!")
+
+data = r.json()
+count = 0
+
+print("Writing to file and downloading previews ...")
+for json in data["skins"]:
+    id = str(json["id"])
+    # Downloading the preview of the skin
+    r2 = requests.get('http://minetest.fensta.bplaced.net/skins/1/' + id + ".png")
+    if r.status_code == 200:
+        preview = r2.content
+        # Read meta datas
+        name = str(json["name"])
+        author = str(json["author"])
+        license = str(json["license"])
+        # Texture file
+        raw_data = base64.b64decode(json["img"])
+        file = open("../textures/character_" + id + ".png", "wb")
+        file.write(bytearray(raw_data))
+        file.close()
+        # Preview file
+        file = open("../textures/character_" + id + "_preview.png", "wb")
+        file.write(bytearray(preview))
+        file.close()
+        # Meta file
+        file = open("../meta/character_" + id + ".txt", "w")
+        file.write(name + "\n" + author + "\n" + license + "\n")
+        file.close()
+        print("Added #%s Name: %s Author: %s License: %s" % (id, name, author, license))
+        count += 1
+
+    else:
+        print("Failed to download skin #" + id)
+
+
+print("Fetched " + str(count) + " skins!")