FUCKING BIG SYNC UPDATE: caching, events, albums, documents, awards, news, schedules, teachers, other

utils/Sync/sync/__init__.py

@@ -1,9 +1,11 @@
 import re
-
 from datetime import datetime
 
 from markdown import markdown
 
+from db import db
+from utils.fn import lmap, key_mapper
+
 
 def create_date(date_str, date_formats=None):
     """
@@ -36,6 +38,18 @@ def create_date(date_str, date_formats=None):
 folder_name_pattern = re.compile('([\d.]+)(.*)')
 
 
+def untouched(documents, store):
+    return lmap(
+        lambda i: i[0],
+        filter(
+            lambda i: (i[1] is None) or ('hash' not in i[1]) or (i[0]['hash'] != i[1]['hash']),
+            map(
+                lambda i: (i, store.read(i)),
+                documents
+            )
+        ))
+
+
 def create_date_and_title_from_folder_name(folder_name, date_formats=None):
     m = folder_name_pattern.findall(folder_name)
     if not m:
@@ -56,4 +70,49 @@ create_post_from_image_list = lambda images: markdown(
         lambda i: '![]({img})'.format(img=i),
         images
     ))
-)
+)
+
+
+class Sync:
+    def __init__(self):
+        super().__init__()
+
+        self.collection = None
+
+    def read(self, document):
+        if isinstance(document, list):
+            return lmap(self.read, document)
+
+        q = {'id': document['id']}
+        try:
+            return self.collection.find_one(q)
+        except ValueError:
+            pass
+        return None
+
+    def update(self, document):
+        if isinstance(document, list):
+            return lmap(self.update, document)
+
+        q = {'id': document['id']}
+        try:
+            self.collection.update_one(q, {'$set': document}, upsert=True)
+            return self.read(document)
+        except ValueError:
+            pass
+        return None
+
+    def compile(self, document):
+        return document
+
+    def query(self, q):
+        return self.collection.find(q)
+
+    def delete(self, q):
+        return self.collection.find_one_and_delete(q)
+
+    def create_id(self, document):
+        return None
+
+    def create_hash(self, document):
+        return None