Created the config.cpp

src/api/config.cpp

@@ -0,0 +1,31 @@
+#include <fstream>
+#include <iostream>
+#include "config.h"
+
+#define CONFIG_FILE "config.json"
+
+bool config::is_valid_config(const json& config) {
+
+    if (!config.contains("token")) {
+        std::cout << "Config file is missing \"token\" field." << std::endl;
+        return false;
+    }
+
+    return true;
+}
+
+json config::read_config() {
+    json config;
+    std::ifstream config_file(CONFIG_FILE);
+
+    if (!config_file.is_open()) {
+        std::cout << "Failed to open config file. Please create a " << CONFIG_FILE << " file in the same directory as the executable." << std::endl;
+        exit(1);
+    }
+
+    config_file >> config;
+
+    if (!is_valid_config(config)) exit(1);
+
+    return config;
+}