# HG changeset patch
# User Michiel Broek <mbroek@mbse.eu>
# Date 1660138820 -7200
# Node ID ce5f39b66a517cca5466cd91463adb3a5a29428c
# Parent  b5e2ff72cc731873d3819b26576c26e796842ee6
Switch co2pressure graph to MySQL

diff -r b5e2ff72cc73 -r ce5f39b66a51 www/getco2pressurelog.php
--- a/www/getco2pressurelog.php	Wed Aug 10 15:33:11 2022 +0200
+++ b/www/getco2pressurelog.php	Wed Aug 10 15:40:20 2022 +0200
@@ -3,35 +3,9 @@
 require_once('config.php');
 
 if (isset($_GET["code"]))
-	$code = $_GET["code"] . ' ' . $_GET["name"];
+	$code = $_GET["code"];
 else
-	$code = "CB0080 Op stoom";
-
-$filename = 'log/co2pressure/' . $code . '.log';
-if (! file_exists($filename)) {
-	header("Content-type: application/json");
-	echo '{}';
-	exit;
-}
-
-
-/*
- * From Stackoverflow, the fastest way to count the lines in a file.
- */
-$file = new \SplFileObject($filename, 'r');
-$file->seek(PHP_INT_MAX);
-
-define ('MAX_INTERVALS', 10);
-$GRAPH_INTERVAL = array ( 0, 1, 5, 15, 30, 60, 120, 240, 480, 720 );
-$GRAPH_DATALINES = array ( 0, 800, 3200, 12000, 24000, 48000, 96000, 192000, 384000, 768000 );
-
-
-for ($graphstep = 1; $graphstep <= MAX_INTERVALS; $graphstep++) {
-	if ($file->key() < $GRAPH_DATALINES[$graphstep])
-		break;
-}
-if ($graphstep > MAX_INTERVALS)
-	$graphstep = MAX_INTERVALS;
+	$code = "CB0080";
 
 
 /*
@@ -43,38 +17,21 @@
  * unit uuid --------------------------------+
  */
 
-
-$handle = @fopen($filename, "r");
-if ($handle) {
-	$lines = 0;
-	while (($buffer = fgets($handle, 4096)) !== false) {
-
-		$buffer = preg_replace( "/\r|\n/", "", $buffer);
-		$row = explode(",", $buffer);
+$connect = mysqli_connect(DBASE_HOST, DBASE_USER, DBASE_PASS, DBASE_NAME);
+if (! $connect) {
+        die('Connect Error (' . mysqli_connect_errno() . ') ' . mysqli_connect_error());
+}
+mysqli_set_charset($connect, "utf8" );
 
-		$hr = intval(substr($buffer, 11, 2));
-		if ((($graphstep == 1)) ||
-		    (($graphstep == 2) && ((substr($buffer, 15, 1) == '0') || (substr($buffer, 15, 1) == '5'))) ||
-		    (($graphstep == 3) && ((substr($buffer, 14, 2) == '00') || (substr($buffer, 14, 2) == '15') ||
-					   (substr($buffer, 14, 2) == '30') || (substr($buffer, 14, 2) == '45'))) ||
-		    (($graphstep == 4) && ((substr($buffer, 14, 2) == '00') || (substr($buffer, 14, 2) == '30'))) ||
-		    (($graphstep == 5) && (substr($buffer, 14, 2) == '00')) ||
-		    (($graphstep == 6) && (substr($buffer, 14, 2) == '00') && (($hr % 2) == 0)) ||
-		    (($graphstep == 7) && (substr($buffer, 14, 2) == '00') && (($hr % 4) == 0)) ||
-		    (($graphstep == 8) && (substr($buffer, 14, 2) == '00') && (($hr % 8) == 0)) ||
-		    (($graphstep == 9) && (substr($buffer, 14, 2) == '00') && (($hr % 12) == 0))) {
-			$lines++;
-			$logs[] = array(
-				'date' => $row[0],
-				'temperature' => $row[1],
-				'pressure' => $row[2]
-			);
-		}
-	}
-	if (!feof($handle)) {
-		echo "Error: unexpected fgets() fail\n";
-	}
-	fclose($handle);
+$query = "SELECT * FROM log_co2pressure WHERE code='".$code."' ORDER BY datetime;";
+$result = mysqli_query($connect, $query) or die("SQL Error 1: " . mysqli_error($connect));
+while ($row = mysqli_fetch_array($result, MYSQLI_ASSOC)) {
+
+    $logs[] = array(
+	'date' => substr($row['datetime'],0,16),
+	'temperature' => $row['temperature'],
+	'pressure' => $row['pressure']
+    );
 }
 header("Content-type: application/json");
 echo json_encode($logs);