From 426fcf43c4eeb84628de759bfbb6469a73471d95 Mon Sep 17 00:00:00 2001
From: Tyler Perkins <tperki17@kent.edu>
Date: Thu, 28 Apr 2022 20:39:39 -0400
Subject: [PATCH] Add option parsing

---
 src/main.cpp         | 25 ++++++++++++++++---------
 src/opt/parseopt.cpp | 41 +++++++++++++++++++++++++++++++++++++++++
 src/opt/parseopt.hpp | 22 ++++++++++++++++++++++
 src/routes.cpp       | 17 +++++++++++++++++
 src/routes.hpp       | 11 +++++++++++
 5 files changed, 107 insertions(+), 9 deletions(-)
 create mode 100644 src/opt/parseopt.cpp
 create mode 100644 src/opt/parseopt.hpp
 create mode 100644 src/routes.hpp

diff --git a/src/main.cpp b/src/main.cpp
index 0c144f6..5172db6 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -6,18 +6,25 @@
 
 #include <iostream>
 #include <crow.h>
+#include "opt/parseopt.hpp"
+
+#include "routes.hpp"
 
 int main(int argc, char** argv){
+
+    option_flags* flags = parse_options(argc, argv);
+
     crow::SimpleApp app;
-    CROW_ROUTE(app, "/")([](){
-        return "Hello World";
-    });
 
-    CROW_ROUTE(app, "/json")([]{
-        crow::json::wvalue response({{ "message", "Hello world" }});
-        response["kek"] = "nay, cringe";
-        return response;
-    });
+    setRoutes(app);
 
-    app.port(5000).run();
+    std::cerr << "Setting up app" << std::endl;
+
+    app.port(flags->port)
+        .server_name("proc_api")
+        .multithreaded();
+
+    delete flags;
+
+    app.run();
 }
diff --git a/src/opt/parseopt.cpp b/src/opt/parseopt.cpp
new file mode 100644
index 0000000..478d4dd
--- /dev/null
+++ b/src/opt/parseopt.cpp
@@ -0,0 +1,41 @@
+///////////////////////////////////////////////////////////////////////////////
+// Tyler Perkins
+// 28-4-22
+// parseopt implementation
+//
+
+#include "parseopt.hpp"
+
+void help(char* progName){
+    std::cout << "Usage: " << progName << " [FLAGS]\n";
+    std::cout << "Options:\n";
+    std::cout << " [-p]          Port to listen on\n";
+    std::cout << " [-h]          Display this help message\n\n";
+    exit(1);
+}
+
+option_flags* parse_options(int argc, char** argv){
+    char c;
+
+    option_flags* ret = new option_flags;
+
+    ret->port = 5000;
+
+    while((c = getopt(argc, argv, optarg_string)) != -1){
+        switch(c){
+            case 'p':
+                std::cout << optarg << "\n";
+                ret->port = atoi(optarg);
+                break;
+            case '?':
+                std::cerr << "Unkown option: " << (char)optopt << "\n";
+            case 'h':
+                help(argv[0]);
+                break;
+            default:
+                abort();
+        }
+    }
+
+    return ret;
+}
diff --git a/src/opt/parseopt.hpp b/src/opt/parseopt.hpp
new file mode 100644
index 0000000..d833e48
--- /dev/null
+++ b/src/opt/parseopt.hpp
@@ -0,0 +1,22 @@
+///////////////////////////////////////////////////////////////////////////////
+// Tyler Perkins
+// 28-4-22
+// parseopt definitions
+//
+
+#pragma once
+
+#include <getopt.h>
+#include <iostream>
+
+///////////////////////////////////////
+// cli options
+
+constexpr char optarg_string[] = "p:h";
+
+struct option_flags {
+    uint16_t port;
+};
+
+void help(char*);
+option_flags* parse_options(int, char**);
diff --git a/src/routes.cpp b/src/routes.cpp
index e69de29..74dbbc0 100644
--- a/src/routes.cpp
+++ b/src/routes.cpp
@@ -0,0 +1,17 @@
+///////////////////////////////////////////////////////////////////////////////
+// Tyler Perkins
+// 28-4-22
+// Routes implementation
+//
+
+#include "routes.hpp"
+
+void setRoutes(crow::SimpleApp& app){
+    CROW_ROUTE(app, "/proc/meminfo")([]{
+        return "Meminfo";
+    });
+
+    CROW_ROUTE(app, "/mem")([]{
+        return "mem";
+    });
+}
diff --git a/src/routes.hpp b/src/routes.hpp
new file mode 100644
index 0000000..453f796
--- /dev/null
+++ b/src/routes.hpp
@@ -0,0 +1,11 @@
+///////////////////////////////////////////////////////////////////////////////
+// Tyler Perkins
+// 28-4-22
+// Routes definition
+//
+
+#pragma once
+
+#include <crow.h>
+
+void setRoutes(crow::SimpleApp&);