From 51d3b7fe05fac5d42445d73e7ec047d523bdfbb5 Mon Sep 17 00:00:00 2001
From: Sam Anthony <sam@samanthony.xyz>
Date: Mon, 2 Dec 2024 18:44:11 -0500
Subject: coordinator client

---
 src/main/java/derms/client/CoordinatorClient.java | 119 ++++++++++++++++++++++
 src/main/java/derms/client/ResponderClient.java   |   2 +-
 2 files changed, 120 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/derms/client/CoordinatorClient.java

diff --git a/src/main/java/derms/client/CoordinatorClient.java b/src/main/java/derms/client/CoordinatorClient.java
new file mode 100644
index 0000000..570d76b
--- /dev/null
+++ b/src/main/java/derms/client/CoordinatorClient.java
@@ -0,0 +1,119 @@
+package derms.client;
+
+import derms.frontend.DERMSInterface;
+
+import java.net.MalformedURLException;
+
+public class CoordinatorClient extends CLI {
+    public static final String usage = "Usage: java derms.client.CoordinatorClient <coordinator ID> <FE host>";
+
+    private final String coordinatorID;
+    private final DERMSInterface server;
+
+    private CoordinatorClient(String coordinatorID, String FEhost) throws MalformedURLException {
+        this.coordinatorID = coordinatorID;
+        this.server = Client.connectToServer(FEhost);
+
+        commands.put("request", new Request());
+        cmdDescriptions.add(new Description(
+                "request <resource ID> <duration>",
+                "Borrow a resource."));
+
+        commands.put("find", new Find());
+        cmdDescriptions.add(new Description(
+                "find <resource name>",
+                "List borrowed resources."));
+
+        commands.put("return", new Return());
+        cmdDescriptions.add(new Description(
+                "return <resource ID>",
+                "Return a borrowed resource."));
+
+        commands.put("swap", new Swap());
+        cmdDescriptions.add(new Description(
+                "swap <old resource ID> <old resource type> <new resource ID> <new resource type>",
+                "Return the old resource and borrow the new one."));
+    }
+
+    public static void main(String[] args) {
+        if (args.length < 2) {
+            System.err.println(usage);
+            System.exit(1);
+        }
+
+        String coordinatorID = args[0];
+        String FEhost = args[1];
+
+        try {
+            (new CoordinatorClient(coordinatorID, FEhost)).run();
+        } catch (MalformedURLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private class Request implements Command {
+        @Override
+        public void exec(String[] args) {
+            if (args.length < 2)
+                System.out.println("invalid arguments for 'request'");
+            else
+                request(args[0], args[1]);
+        }
+
+        private void request(String resourceID, String durationStr) {
+            try {
+                int duration = Integer.parseInt(durationStr);
+                if (duration < 0)
+                    throw new NumberFormatException("duration less than 0");
+                String response = server.requestResource(coordinatorID, resourceID, duration);
+                System.out.println(response);
+            } catch (NumberFormatException e) {
+                System.out.println("invalid duration: " + e.getMessage());
+            }
+        }
+    }
+
+    private class Find implements Command {
+        @Override
+        public void exec(String[] args) {
+            if (args.length < 1)
+                System.out.println("invalid arguments for 'find'");
+            else find(args[0]);
+        }
+
+        private void find(String resourceID) {
+            String response = server.findResource(coordinatorID, resourceID);
+            System.out.println(response);
+        }
+    }
+
+    private class Return implements Command {
+        @Override
+        public void exec(String[] args) {
+            if (args.length < 1)
+                System.out.println("invalid arguments for 'return'");
+            else
+                returnResource(args[0]);
+        }
+
+        private void returnResource(String resourceID) {
+            String response = server.returnResource(coordinatorID, resourceID);
+            System.out.println(response);
+        }
+    }
+
+    private class Swap implements Command {
+        @Override
+        public void exec(String[] args) {
+            if (args.length < 4)
+                System.out.println("invalid arguments for 'swap'");
+            else
+                swap(args[0], args[1], args[2], args[3]);
+        }
+
+        private void swap(String oldResourceID, String oldResourceType, String newResourceID, String newResourceType) {
+            String response = server.swapResource(coordinatorID, oldResourceID, oldResourceType, newResourceID, newResourceType);
+            System.out.println(response);
+        }
+    }
+}
diff --git a/src/main/java/derms/client/ResponderClient.java b/src/main/java/derms/client/ResponderClient.java
index 57bb132..23361d7 100644
--- a/src/main/java/derms/client/ResponderClient.java
+++ b/src/main/java/derms/client/ResponderClient.java
@@ -5,7 +5,7 @@ import derms.frontend.DERMSInterface;
 import java.net.MalformedURLException;
 
 public class ResponderClient extends CLI {
-    public static final String usage = "Usage: java derms.client.ResponderClientCLI <FE host>";
+    public static final String usage = "Usage: java derms.client.ResponderClient <FE host>";
 
     private final DERMSInterface server;
 
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