migrate vtec_events_byugc json from php to python

config/mesonet.inc

@@ -263,6 +263,8 @@
     RewriteRule prism/([0-9\.\-]+)/([0-9\.\-]+)/([0-9\.\-]+)$ prism.py?lon=$1&lat=$2&valid=$3 [QSA]
     RewriteRule stage4/([0-9\.\-]+)/([0-9\.\-]+)/([0-9\.\-]+)$ stage4.py?lon=$1&lat=$2&valid=$3 [QSA]
     RewriteRule network/([0-9\.\-A-Z]+).geojson network.py?network=$1 [QSA]
+    # 15 Feb 2020 migration from PHP to python
+	RewriteRule vtec_events_byugc.php(.*) vtec_events_byugc.py$1 [QSA]
   </Directory>
 
   <Directory "/opt/iem/htdocs/kml">

htdocs/json/index.php

@@ -556,7 +556,7 @@
 
   $services[] = Array(
   		"title" => "Search for Warnings by UGC Code and Date Interval",
-  		"url" => "/json/vtec_events_byugc.php?ugc={ugc}&edate={edate}&sdate={sdate}",
+  		"url" => "/json/vtec_events_byugc.py?ugc={ugc}&edate={edate}&sdate={sdate}",
   		"desc" => "Provides a json response of archived warnings valid for the
   		given UGC code and date interval (UTC time, end date exclusive). The date
   		of product issuance is used for the date filtering.",

htdocs/json/vtec_events_byugc.py

@@ -0,0 +1,66 @@
+""" Find VTEC events by a given UGC code. """
+import json
+import datetime
+
+from paste.request import parse_formvars
+from pyiem.util import get_dbconn, html_escape
+from pandas.io.sql import read_sql
+
+
+def run(ugc, sdate, edate):
+    """ Answer the request! """
+    pgconn = get_dbconn("postgis")
+
+    df = read_sql(
+        """
+        SELECT
+        to_char(issue at time zone 'UTC',
+            'YYYY-MM-DDThh24:MI:SSZ') as iso_issued,
+        to_char(expire at time zone 'UTC',
+            'YYYY-MM-DDThh24:MI:SSZ') as iso_expired,
+        eventid, phenomena, significance, hvtec_nwsli, wfo
+        from warnings WHERE ugc = %s and issue > %s
+        and issue < %s ORDER by issue ASC
+        """,
+        pgconn,
+        params=(ugc, sdate, edate),
+    )
+
+    res = {"events": []}
+    for _, row in df.iterrows():
+        res["events"].append(
+            {
+                "issue": row["iso_issued"],
+                "expire": row["iso_expired"],
+                "eventid": row["eventid"],
+                "phenomena": row["phenomena"],
+                "hvtec_nwsli": row["hvtec_nwsli"],
+                "significance": row["significance"],
+                "wfo": row["wfo"],
+            }
+        )
+
+    return json.dumps(res)
+
+
+def application(environ, start_response):
+    """Answer request."""
+    fields = parse_formvars(environ)
+    ugc = fields.get("ugc", "IAC001")[:6]
+    sdate = datetime.datetime.strptime(
+        fields.get("sdate", "1986/1/1"), "%Y/%m/%d"
+    )
+    edate = datetime.datetime.strptime(
+        fields.get("edate", "2099/1/1"), "%Y/%m/%d"
+    )
+    cb = fields.get("callback", None)
+
+    res = run(ugc, sdate, edate)
+    if cb is None:
+        data = res
+    else:
+        data = "%s(%s)" % (html_escape(cb), res)
+
+    headers = [("Content-type", "application/json")]
+    start_response("200 OK", headers)
+    return [data.encode("ascii")]

htdocs/vtec/search.js

@@ -202,7 +202,7 @@ function setupUI() {
 		model : 'SBW',
 		proxy : {
 			type : 'ajax',
-			url : '/json/vtec_events_byugc.php',
+			url : '/json/vtec_events_byugc.py',
 	        reader: {
 	            type: 'json',
 	            rootProperty: 'events'
@@ -348,7 +348,7 @@ function setupUI() {
 			text : 'Load Grid with Settings Above',
 			handler : function(){
 
-				eventStore.getProxy().setUrl('/json/vtec_events_byugc.php');
+				eventStore.getProxy().setUrl('/json/vtec_events_byugc.py');
 
 				eventStore.load({
 					add : false,