Finish project. Please read the readme.

Signed-off-by: Rick Hays <rhays@haysgang.com>

RX.php

@@ -0,0 +1,103 @@
+<?php
+/**
+ * RX - Main API to process in coming request for closest location.
+ * 2019-09-25
+ * Rick Hays
+ *
+ */
+
+include_once 'classes/geocode.php';
+
+	// Test Key before allowing access - No encryption, simple key test.
+	$key = GetParam('K');
+	if ($key !== 'RLH1234')
+	{
+		header("HTTP/1.0 405 Method Not Allowed");
+		exit;
+	}
+
+	$request_method = strtoupper($_SERVER["REQUEST_METHOD"]);
+	switch($request_method)
+	{
+		case 'GET':
+
+			$Lat = GetParam('Latitude');
+			$Lon = GetParam('Longitude');
+			try
+			{
+				$db = new PDO('sqlite:db/RX.db');
+				$geo = new geocode();
+				$shortest = 999999;                     // <-- Sets to a very high value to find shortest distance below.
+
+				$result = $db->query('SELECT rowid,* FROM pharmacies');
+				foreach ($result as $row) {
+					$distance = $geo->straight_line_distance($Lat, $Lon, $row['Latitude'], $row['Longitude'], 'N');
+					if ($distance < $shortest)
+					{
+						$pharmacy  = $row['Pharmacy'];
+						$address   = $row['Address'];
+						$city      = $row['City'];
+						$state     = $row['State'];
+						$zip       = $row['Zip'];
+						$latitude  = $row['Latitude'];
+						$longitude = $row['Longitude'];
+						$shortest  = $distance;
+					}
+				}
+				$db = NULL;
+			}
+			catch(PDOException $e)
+			{
+				echo 'PDO Exception: ' . $e-> getMessage();
+				exit;
+			}
+			break;
+//		case 'POST':
+//			break;
+//		case 'PUT':
+//			break;
+//		case 'DELETE':
+//			break;
+		default:
+			// Invalid Request Method
+			header("HTTP/1.0 405 Method Not Allowed");
+			exit;
+	}
+
+	// Output JSON back to HTML file.
+	echo 'Closest Pharmacy To you is: <br/><br/>';
+	echo  $pharmacy  . '<br/>';
+	echo  $address   . '<br/>';
+	echo  $city      . '<br/>';
+	echo  $state     . '<br/>';
+	echo  $zip       . '<br/>';
+	echo '<br/>';
+//	echo $latitude  . '<br/>';
+//	echo $longitude . '<br/>';
+	echo 'Distance of - ' . round($shortest, 1)  . ' mile(s) away.<br/>';
+	exit;
+
+// ##### END OF PROGRAM ################################################################################################
+
+	/**
+	 * GetParam - Returns the GET or POST values, and allows for defaults if not present.
+	 * @param      $param_name
+	 * @param null $default
+	 *
+	 * @return string|null
+	 */
+	function GetParam($param_name, $default=NULL)
+	{
+	global $_POST;
+	global $_GET;
+	$param_value = "";
+
+	if(isset($_POST[$param_name]))
+		$param_value = $_POST[$param_name];
+	else if(isset($_GET[$param_name]))
+		$param_value = $_GET[$param_name];
+	else if($param_value === '')
+		$param_value = $default;
+
+	return $param_value;
+	}

classes/geocode.php

@@ -0,0 +1,35 @@
+<?php
+
+	class geocode
+	{
+		/**
+		 * straight_line_distance - Returns Straight Line distance between two sets of (LAT/LONGS)
+		 * @param  real	   $lat1 - Latitude of Location #1
+		 * @param  real	   $lon1 - Longitude of Location #1
+		 * @param  real	   $lat2 - Latitude of Location #2
+		 * @param  real	   $lon2 - Longitude of Location #2
+		 * @param  string  $unit - Unit of measure [DEFAULT = statute miles] ('K'=kilometers, 'N'=nautical miles)
+		 * @return numeric - returns the distance in the desired unit of measure.
+		 */
+		public function straight_line_distance($lat1, $lon1, $lat2, $lon2, $unit='')
+		{
+			$theta = $lon1 - $lon2;
+			$dist = sin(deg2rad($lat1)) * sin(deg2rad($lat2)) +  cos(deg2rad($lat1)) * cos(deg2rad($lat2)) * cos(deg2rad($theta));
+			$dist = acos($dist);
+			$dist = rad2deg($dist);
+			$miles = $dist * 60 * 1.1515;
+			$unit = strtoupper($unit);
+			if ($unit == "K")
+			{
+				return ($miles * 1.609344);
+			}
+			else if ($unit == "N")
+			{
+				return ($miles * 0.8684);
+			}
+			else
+			{
+				return $miles;
+			}
+		}
+	}

css/system-min.css

@@ -1 +1 @@
-.clear{clear:both;float:none}body{background-color:lightgray;width:100%}body header div{margin:0 auto;width:80%}body header div p{text-align:left}body section form div#latitude_error{color:red;margin:0 auto;text-align:left;width:80%}body section form div#latitute_input{margin:10px auto;text-align:left;width:80%}body section form div#latitute_input div#latitute_input_label{float:left;text-align:right;width:80px}body section form div#latitute_input div#latitute_input_input{float:left;text-align:left;width:100px}body section form div#longitude_error{color:red;margin:0 auto;text-align:left;width:80%}body section form div#longitude_input{margin:10px auto;width:80%}body section form div#longitude_input div#longitude_input_label{float:left;text-align:right;width:80px}body section form div#longitude_input div#longitude_input_text{float:left;text-align:left;width:100px}body section form div#submit_button{padding:20px 0 20px 180px;width:80%}body section div#result_header{margin:0 auto;text-align:left;width:80%}body section div#results{background-color:aqua;margin:0 auto;text-align:left;width:80%}body footer p{margin:20px auto;text-align:left;width:80%}
+.clear{clear:both;float:none}body{background-color:lightgray;width:100%}body header div{margin:0 auto;width:80%}body header div p{text-align:left}body section div#request{margin:0 auto;width:80%}body section div#request p{text-align:left}body section form div#latitude_error{color:red;margin:0 auto;text-align:left;width:80%}body section form div#latitute_input{margin:10px auto;text-align:left;width:80%}body section form div#latitute_input div#latitute_input_label{float:left;text-align:right;width:80px}body section form div#latitute_input div#latitute_input_input{float:left;text-align:left;width:100px}body section form div#longitude_error{color:red;margin:0 auto;text-align:left;width:80%}body section form div#longitude_input{margin:10px auto;width:80%}body section form div#longitude_input div#longitude_input_label{float:left;text-align:right;width:80px}body section form div#longitude_input div#longitude_input_text{float:left;text-align:left;width:100px}body section form div#submit_button{padding:20px 0 20px 180px;width:80%}body section div#result_header{margin:0 auto;text-align:left;width:80%}body section div#results{background-color:white;margin:0 auto;text-align:left;width:80%}body footer p{margin:20px auto;text-align:left;width:80%}

css/system.css

@@ -10,6 +10,11 @@ body {
     width: 80%; }
     body header div p {
       text-align: left; }
+  body section div#request {
+    margin: 0 auto;
+    width: 80%; }
+    body section div#request p {
+      text-align: left; }
   body section form div#latitude_error {
     color: red;
     margin: 0 auto;
@@ -51,7 +56,7 @@ body {
     text-align: left;
     width: 80%; }
   body section div#results {
-    background-color: aqua;
+    background-color: white;
     margin: 0 auto;
     text-align: left;
     width: 80%; }

index.php → index.html

@@ -1,8 +1,3 @@
-<?php
-	opcache_reset();
-//	apc_clear_cache();
-?>
-
 <!DOCTYPE html>
 <html lang="en">
 	<head>
@@ -17,10 +12,13 @@
 	<body>
 		<header>
 			<div>
-				<p>Please enter a Latitude and Longitude</p>
+				<h2>Find the closest Pharmacy to you</h2>
 			</div>
 		</header>
 		<section>
+			<div id="request">
+				<p>Please enter a Latitude and Longitude</p>
+			</div>
 			<form action="" method="get">
 				<div id="latitude_error"></div>
 				<div id="latitute_input">
@@ -41,7 +39,7 @@
 					</div>
 				</div>
 				<div id="submit_button" class="clear">
-					<input type="button" onClick="submitForm()" value=" Save ">
+					<input type="button" onClick="submitForm()" value=" Find ">
 				</div>
 			</form>
 		</section>

js/system.js

@@ -1,7 +1,7 @@
 let value_error = false;    // Flag if Lat/Lon values are out of range.
 let latitude_low = 38.0;
 let latitude_high = 40.0;
-let longitude_low = -96.0;
+let longitude_low = -97.0;
 let longitude_high = -94.0;
 
 function submitForm()
@@ -29,9 +29,26 @@ function submitForm()
 	// if Lat or Lon values are out of range return to form.
 	if (value_error) { return; }
 
+	// Call to API
+	$.ajax(
+	{
+		url : 'https://rhays.us/Examples/RX_API_Call/RX.php',
+		type : 'GET',
+		dataType: 'html',
+		data :
+		{
+			'K'         : 'RLH1234',
+			'Latitude'  : nLatitude,
+			'Longitude' : nLongitude
+		},
+		success : function(data)
+		{
+			$("#results").html(data);
+		},
+		error : function(request,error)
+		{
+			alert("Request: "+JSON.stringify(request));
+		}
+	});
 
-
-
-
-	alert('Submit Form');
 }

scss/system.scss

@@ -25,6 +25,16 @@ body
 
 	section
 	{
+		div#request
+		{
+			margin: 0 auto;
+			width: 80%;
+
+			p
+			{
+				text-align: left;
+			}
+		}
 		form
 		{
 			div#latitude_error
@@ -99,7 +109,7 @@ body
 
 		div#results
 		{
-			background-color: aqua;
+			background-color: white;
 			margin: 0 auto;
 			text-align: left;
 			width: 80%;