From 29c3dc7199d27044cc3728aa3ba1fefa3e1569b3 Mon Sep 17 00:00:00 2001
From: Patrick McDonagh <pmcdonagh@henry-pump.com>
Date: Thu, 11 Feb 2016 14:11:04 -0600
Subject: [PATCH] ability to download all values in CSV format

---
 www/app.js              |  2 ++
 www/functions_SQLite.js | 30 ++++++++++++++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/www/app.js b/www/app.js
index 23e77c2..8756bd3 100644
--- a/www/app.js
+++ b/www/app.js
@@ -73,6 +73,7 @@ app.get('/json/tag',                                            fns.getAllTags);
 app.get('/json/val/:tag',                                       fns.latestValueSingleTag);      // Gets the latest value of a single tag
 app.get('/json/series/:tag/:hours',                             fns.seriesTagValues);           // Gets all the values of a tag for the last X hours
 app.get('/json/valBetween/:tag/:startDatetime/:endDatetime',    fns.seriesTagValuesBetween);    // Gets the values of a tag between the start time and end time
+app.get('/json/CSV/all',                                        fns.allDataCSV);                // Gets a CSV of all values stored
 app.get('/json/CSV/:tag/:startDatetime/:endDatetime',           fns.seriesCSV);                 // Gets a CSV of the values of a tag between the start time and end time
 app.get('/json/CSV/:tag/:hours',                                fns.seriesCSV);                 // Gets a CSV of the values of a tag for the last x hours
 app.get('/json/all',                                            fns.latestValueAllTags);        // Gets the latest values of all tags in the scan list
@@ -82,6 +83,7 @@ app.get('/json/logger/status',                                  fns.checkLoggerS
 app.get('/json/logger/restart',                                 fns.restartLogger);             // Restarts the data logger
 
 
+
 app.get('*', angular);
 
 /**
diff --git a/www/functions_SQLite.js b/www/functions_SQLite.js
index 096424d..ad5c6b9 100644
--- a/www/functions_SQLite.js
+++ b/www/functions_SQLite.js
@@ -177,6 +177,36 @@ exports.seriesTagValuesBetween = function(req, res){
 	});
 };
 
+exports.allDataCSV = function(req, res){
+	var sqlite3 = require('sqlite3').verbose();
+	var db = new sqlite3.Database(dbFile);
+
+	db.serialize(function(){
+		var query = "SELECT v.id, t.vanityName, v.val, v.dateAdded FROM tags t JOIN vals v ON t.id = v.tagID";
+		var prepQuery = db.prepare(query);
+		prepQuery.all( function(err, rows){
+			prepQuery.finalize();
+			db.close();
+			if (err){
+				console.log(err);
+				res.json({status:"error", message:err, query:query});
+			} else {
+				var csvString = "";
+				var h = ["ID", "Tag Name",  "Value", "DateAdded"];
+				csvString = csvString + h.join(",") + "\r";
+				for (var i= 0; i < rows.length; i++){
+					var r = [rows[i].id, rows[i].val, rows[i].dateAdded];
+					csvString = csvString + r.join(",") + "\r";
+				}
+
+				res.set('Content-Type', 'text/csv');
+				res.set('Content-Disposition', "attachment;filename=tagdata.csv");
+				res.send(csvString);
+			}
+		});
+	});
+};
+
 exports.seriesCSV = function(req, res){
 	var sqlite3 = require('sqlite3').verbose();
 	var db = new sqlite3.Database(dbFile);