Merge pull request #9 from nwg-piotr/v2

nwg-shell v0.2.0

install.sh

@@ -1,3 +1,4 @@
 #!/usr/bin/env bash
 
 python3 setup.py install --optimize=1
+cp nwg-shell.jpg /usr/share/backgrounds/

nwg_shell/check_updates.py

@@ -0,0 +1,92 @@
+#!/usr/bin/python3
+
+import json
+import os
+import subprocess
+import time
+
+from nwg_shell.__about__ import __version__
+
+data_home = os.getenv('XDG_DATA_HOME') if os.getenv('XDG_DATA_HOME') else os.path.join(os.getenv("HOME"),
+                                                                                       ".local/share")
+
+
+def load_json(path):
+    try:
+        with open(path, 'r') as f:
+            return json.load(f)
+    except Exception as e:
+        print("Error loading json: {}".format(e))
+        return None
+
+
+def save_json(src_dict, path):
+    with open(path, 'w') as f:
+        json.dump(src_dict, f, indent=2)
+
+
+def is_newer(string_new, string_existing):
+    """
+    Compares versions in format 'major.minor.patch' (just numbers allowed).
+    :param string_new: new version to compare with existing one
+    :param string_existing: existing version
+    :return: True if new is newer then existing
+    """
+    new = major_minor_path(string_new)
+    existing = major_minor_path(string_existing)
+    if new and existing:
+        if new[0] > existing[0]:
+            return True
+        elif new[1] > existing[1]:
+            return True
+        elif new[2] > existing[2]:
+            return True
+        else:
+            return False
+    else:
+        return False
+
+
+def major_minor_path(string):
+    parts = string.split(".")
+    if len(parts) != 3:
+        return None
+    try:
+        return int(parts[0]), int(parts[1]), int(parts[2])
+    except:
+        return None
+
+
+def main():
+    shell_data_file = os.path.join(data_home, "nwg-shell/data")
+
+    shell_data = load_json(shell_data_file)
+    if not shell_data:
+        if not os.path.isdir(os.path.join(data_home, "nwg-shell/")):
+            os.makedirs(os.path.join(data_home, "nwg-shell"))
+
+        print("Shell data file not found, creating default.")
+        shell_data = {"last-upgrade": "0.0.0"}
+        save_json(shell_data, shell_data_file)
+
+    # Shell versions that need to trigger upgrade
+    need_upgrade = ["0.2.0"]
+
+    # last_upgrade = ver2int(shell_data["last-upgrade"])
+    # ver = ver2int(__version__)
+
+    if shell_data["last-upgrade"] and __version__:
+        if is_newer(__version__, shell_data["last-upgrade"]) and __version__ in need_upgrade:
+            print("Upgrade to {} needed. Run 'nwg-shell-installer -u'.".format(__version__))
+            time.sleep(5)
+            subprocess.Popen(
+                'exec {}'.format("notify-send -i /usr/share/pixmaps/nwg-shell.svg 'nwg-shell v{} available' "
+                                 "'Run \"nwg-shell-installer -u\" in terminal.'".format(__version__)), shell=True)
+        else:
+            print("No upgrade needed.")
+    else:
+        print("Couldn't check if upgrade needed.")
+
+
+if __name__ == '__main__':
+    main()