Add initial working version

README.md

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+```
+1. Copy the beets plugin into your plugin folder (e.g. /usr/lib64/python2.7/site-packages/beetsplug/)
+2. Deploy the virtual-env wrapper (auto_deploy.sh) e.g. to /opt/funkwhale/auto_deploy.sh and adjust paths in it
+3. Adjust your beets config for the plugin:
+
+plugins: funkwhaleimport
+funkwhale:
+  library_id: "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"
+  importer: "/opt/funkwhale/auto_import.sh"
+
+```

auto_import.sh

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+#!/bin/bash
+USER=$(id -un)
+if [ "$USER" != "funkwhale" ]; then
+  exec sudo -u funkwhale $0 "$@"
+elif [ "$USER" == "funkwhale" ]; then
+  echo "activating venv"
+  cd /opt/funkwhale
+  source virtualenv/bin/activate
+  export $(cat prod.env)
+  echo "venv activated. Importing now"
+  echo "$@"
+  exec /opt/funkwhale/api/manage.py "$@"
+fi

funkwhaleimport.py

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+# -*- coding: utf-8 -*-
+
+"""Updates an Funkwhale intance whenever the filesystem changes.
+
+Put something like the following in your config.yaml to configure:
+    funkwhale:
+        library_id: id_to_import_into
+        importer: path_to_importer_script
+"""
+from __future__ import division, absolute_import, print_function
+
+from beets.plugins import BeetsPlugin
+import os
+from beets import config
+from subprocess import call
+
+class FunkwhaleUpdatePlugin(BeetsPlugin):
+    def __init__(self):
+        super(FunkwhaleUpdatePlugin, self).__init__()
+        config['funkwhale'].add({
+            "library_id": "",
+            "importer": ""
+        })
+
+        self.register_listener('import_task_files', self.task_done)
+
+    def task_done(self, task, session):
+        self._log.info(u'Database updated.')
+        folders = []
+        for item in task.items:
+          path = os.path.dirname(item.path) #get path of every imported file
+          folders.append(path)
+        folders = list(set(folders))
+        folders = map(lambda f: os.path.join(f, "*"), folders)
+        command = [
+            str(config["funkwhale"]["importer"]),
+            "import_files",
+            str(config["funkwhale"]["library_id"]),
+            " ".join(map(lambda f: "{}".format(f),folders)),
+            "--recursive",
+            "--replace",
+            "--noinput"
+        ]
+        call(command)