From f7b1e727ec447b1613a5e7e51a1afac1cc5b1741 Mon Sep 17 00:00:00 2001
From: Galen Guyer <galen@galenguyer.com>
Date: Thu, 19 Aug 2021 15:24:07 -0400
Subject: add after date query arg

---
 poller/models.py |  7 +++++++
 poller/routes.py | 15 +++++++++++++--
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/poller/models.py b/poller/models.py
index 4bcca06..3c45f2c 100644
--- a/poller/models.py
+++ b/poller/models.py
@@ -33,6 +33,13 @@ class Day(db.Model):
         """
         return cls.query.all()
 
+    @classmethod
+    def get_after(cls, after):
+        """
+        Helper to get all values after a given date
+        """
+        return cls.query.filter(cls.last_updated > after).all()
+
     def serialize(self):
         """
         used for json serialization
diff --git a/poller/routes.py b/poller/routes.py
index 6911fdd..676ba78 100644
--- a/poller/routes.py
+++ b/poller/routes.py
@@ -1,10 +1,21 @@
-from flask import Flask, jsonify
+from flask import Flask, jsonify, request
+from datetime import datetime
+from time import mktime, strptime
+
 from . import APP
 from .models import Day
 
 @APP.route('/api/v0/history')
 def _get_api_v0_history():
-    return jsonify([day.serialize() for day in Day.get_all()])
+    after_str = request.args.get("after")
+    if after_str == None: 
+        return jsonify([day.serialize() for day in Day.get_all()])
+    try:
+        after = datetime.fromtimestamp(mktime(strptime(after_str, "%Y-%m-%d")))
+        return jsonify([day.serialize() for day in Day.get_after(after)])
+    except:
+        return jsonify({"error": "bad request", "details": "error parsing query 'after'"}), 400
+
 
 @APP.route('/api/v0/latest')
 def _get_api_v0_latest():
-- 
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