Lab 9 Solution

README.md

@@ -83,15 +83,16 @@ Let's run a few queries against our database.
 phpapp=# \dt+
 ```
 
-We should see two tables, like
+We should see three tables, like
 
 ```
                             List of relations
  Schema |       Name        | Type  |  Owner   |    Size    | Description
 --------+-------------------+-------+----------+------------+-------------
  public | actions           | table | aforward | 8192 bytes |
+ public | clients           | table | aforward | 8192 bytes |
  public | schema_migrations | table | aforward | 8192 bytes |
-(2 rows)
+(3 rows)
 ```
 
 Let's look at the data within the `schema_migrations` table.
@@ -107,9 +108,39 @@ The output should look similar to:
 --------------------------------------+----------------------------
  20200202110100-create-migrations.sql | 2020-02-02 11:39:55.014702
  20200202110200-create-actions.sql    | 2020-02-02 11:39:55.014702
-(2 rows)
+ 20200322173700-create-clients.sql    | 2020-03-22 18:15:50.238449
+(3 rows)
 ```
 
+#### seeding database
+
+You can run the following to insert some sample data into your database.
+
+```sql
+INSERT INTO clients
+  (name, data)
+VALUES
+  ('Big Co.', '{"credits": 100}'::json),
+  ('Small Co.', '{"credits": 100}'::json);
+```
+
+You can verify the automatically generated tokens, for example:
+
+```sql
+SELECT name,
+       token,
+       data
+FROM clients;
+```
+
+Returning something similar to:
+
+   name    |              token               |       data
+-----------+----------------------------------+------------------
+ Big Co.   | d7d85f7eac7360d725b44d327445473e | {"credits": 100}
+ Small Co. | 9f8983a8494c8a003e064374ffb77cb6 | {"credits": 100}
+
+
 ## Running
 
 To start the PHP server, run the following from

db/migrations/20200322173700-create-clients.sql

@@ -0,0 +1,14 @@
+CREATE SEQUENCE clients_id_seq;
+CREATE TABLE clients (
+  id int DEFAULT nextval('clients_id_seq'),
+  name varchar(255),
+  token varchar(100) NOT NULL DEFAULT md5(random()::text),
+  data jsonb,
+  inserted_at timestamp DEFAULT NOW(),
+  updated_at timestamp DEFAULT NOW(),
+  PRIMARY KEY (id),
+  UNIQUE (token)
+);
+
+INSERT INTO schema_migrations (migration, migrated_at)
+VALUES ('20200322173700-create-clients.sql', NOW()::timestamp);

db/schema.sql

@@ -17,6 +17,18 @@ CREATE TABLE actions (
   PRIMARY KEY (id)
 );
 
+CREATE SEQUENCE clients_id_seq;
+CREATE TABLE clients (
+  id int DEFAULT nextval('clients_id_seq'),
+  name varchar(255),
+  token varchar(100) NOT NULL DEFAULT md5(random()::text),
+  data jsonb,
+  inserted_at timestamp DEFAULT NOW(),
+  updated_at timestamp DEFAULT NOW(),
+  PRIMARY KEY (id),
+  UNIQUE (token)
+);
+
 CREATE TABLE schema_migrations (
   migration varchar(255),
   migrated_at timestamp DEFAULT NOW(),
@@ -28,4 +40,5 @@ INSERT INTO schema_migrations
   (migration)
 VALUES
   ('20200202110100-create-migrations.sql'),
-  ('20200202110200-create-actions.sql');
+  ('20200202110200-create-actions.sql'),
+  ('20200322173700-create-clients.sql');

public/api.php

@@ -0,0 +1,57 @@
+<?php
+
+$headers = getallheaders();
+
+header("Content-Type: application/json");
+
+if (isset($headers["Authentication"])) {
+    list($type, $token) = explode(" ", $headers["Authentication"], 2);
+
+    $dbconn = pg_connect("host=localhost port=5432 dbname=phpapp");
+    $sql = 'SELECT name, data FROM clients WHERE token = $1';
+    $result = pg_query_params($dbconn, $sql, [$token]);
+    $data = pg_fetch_all($result);
+
+    if (empty($data)) {
+        http_response_code(401);
+        $reply = [
+            "error" => "Invalid token.",
+            "token" => $token,
+            "type" => $type,
+        ];
+        echo json_encode($reply);
+        exit;
+    }
+} else {
+    http_response_code(400);
+    $reply = [
+        "error" => "Please provide a valid Authentication header for this API.",
+        "headers" => $headers,
+    ];
+    echo json_encode($reply);
+    exit;
+}
+
+if (!isset($headers["X-Men"])) {
+    http_response_code(400);
+    $reply = [
+        "error" => "Please provide an X-Men mutant and reveal their human name.",
+        "headers" => $headers,
+    ];
+    echo json_encode($reply);
+    exit;
+}
+
+http_response_code(200);
+switch($mutant = $headers["X-Men"]) {
+case "Wolverine":
+    $name = "Logan";
+    break;
+case "Magento":
+    $name = "Eric";
+    break;
+default:
+    $name = "Unknown";
+}
+$reply = ["mutant" => $mutant, "name" => $name];
+echo json_encode($reply);