Initial project structure. (#1)

src/main.cpp

@@ -0,0 +1,104 @@
+/**
+    Entry point for Sashimono
+**/
+#include "pchheader.hpp"
+#include "conf.hpp"
+#include "sqlite.hpp"
+#include "salog.hpp"
+
+/**
+ * Parses CLI args and extracts sashimono agent command and parameters given.
+ * @param argc Argument count.
+ * @param argv Arguments.
+ * @returns 0 on success, -1 on error.
+ */
+int parse_cmd(int argc, char **argv)
+{
+    conf::ctx.command = argv[1];
+    if (argc == 2 && //We get working dir as an arg anyway. So we need to check for ==2 args.
+        (conf::ctx.command == "new" || conf::ctx.command == "run" || conf::ctx.command == "version"))
+    {
+        // We populate the global contract ctx with the detected command.
+        conf::set_dir_paths(argv[0]);
+        return 0;
+    }
+
+    // If all extractions fail display help message.
+    std::cerr << "Arguments mismatch.\n";
+    std::cout << "Usage:\n";
+    std::cout << "sagent version\n";
+    std::cout << "sagent <command> (command = run | new | rekey)\n";
+    std::cout << "Example: sagent run\n";
+
+    return -1;
+}
+
+/**
+ * Performs any cleanup on graceful application termination.
+ */
+void deinit()
+{
+    conf::deinit();
+}
+
+int main(int argc, char **argv)
+{
+    // Extract the CLI args
+    // This call will populate conf::ctx
+    if (parse_cmd(argc, argv) != 0)
+        return -1;
+
+    if (conf::ctx.command == "new")
+    {
+        // This will create a new config.
+        if (conf::create() != 0)
+            return -1;
+    }
+    else
+    {
+        if (conf::init() != 0)
+            return -1;
+
+        salog::init(); // Initialize logger for SA.
+
+        if (conf::ctx.command == "run")
+        {
+            LOG_INFO << "Sashimono agent started. Version : " << conf::cfg.version << " Log level : " << conf::cfg.log.log_level;
+
+            // Run the program.
+
+            sqlite3 *db = NULL;
+            const char *path = "db.sqlite";
+
+            if (sqlite::open_db(path, &db, true) == -1)
+            {
+                LOG_ERROR << "Error opening database";
+                return -1;
+            }
+            LOG_INFO << "Database " << path << " opened successfully";
+
+            const std::vector<sqlite::table_column_info> column_info{
+                sqlite::table_column_info("VERSION", sqlite::COLUMN_DATA_TYPE::TEXT)};
+
+            if (create_table(db, "SA_VERSION", column_info) == -1)
+                return -1;
+
+            if (sqlite::insert_row(db, "SA_VERSION", "VERSION", "\"0.0.0\"") == -1)
+                return -1;
+
+            if (sqlite::close_db(&db) == -1)
+            {
+                LOG_ERROR << "Error closing database";
+                return -1;
+            }
+        }
+        else if (conf::ctx.command == "version")
+            // Print the version
+            LOG_INFO << "Sashimono Agent " << conf::cfg.version;
+
+        deinit();
+    }
+
+    LOG_INFO << "sashimono agent exited normally.";
+    return 0;
+}