Move server code to this repo (#95)

move server code to this repo

app/serializer.py

@@ -0,0 +1,55 @@
+from datetime import datetime
+
+
+def date_string_to_time_passed(prev_date: str) -> str:
+    """
+    Converts a date string to time passed. eg. 2 minutes ago, 1 hour ago, yesterday, 2 days ago, 2 weeks ago, etc.
+    """
+
+    now = datetime.now()
+    then = datetime.strptime(prev_date, "%Y-%m-%d %H:%M:%S")
+
+    diff = now - then
+    days = diff.days
+
+    if days < 0:
+        return "in the future"
+
+    if days == 0:
+        seconds = diff.seconds
+
+        if seconds < 15:
+            return "now"
+
+        if seconds < 60:
+            return str(seconds) + " seconds ago"
+
+        if seconds < 3600:
+            return str(seconds // 60) + " minutes ago"
+
+        return str(seconds // 3600) + " hours ago"
+
+    if days == 1:
+        return "yesterday"
+
+    if days < 7:
+        return str(days) + " days ago"
+
+    if days < 30:
+        if days < 14:
+            return "1 week ago"
+
+        return str(days // 7) + " weeks ago"
+    if days < 365:
+        if days < 60:
+            return "1 month ago"
+
+        return str(days // 30) + " months ago"
+    if days > 365:
+        if days < 730:
+            return "1 year ago"
+
+        return str(days // 365) + " years ago"
+
+    return "I honestly don't know"
+