draft basics

.gitignore

@@ -4,3 +4,5 @@ obj/
 .directory
 bin/Debug
 x64/Debug
+app/server/Libraries
+.vscode

app/server/CMakeLists.txt

@@ -2,5 +2,10 @@ cmake_minimum_required(VERSION 2.8)
 project( OnlineResourceWatcherServerApp )
 add_executable( OnlineResourceWatcherServerApp main.cpp )
 
+# SQLite3
+include_directories( /usr/include )
+link_directories( /usr/lib )
+target_link_libraries( OnlineResourceWatcherServerApp sqlite3 )
+
 # cmake -DCMAKE_BUILD_TYPE=Debug -DOMS_DEBUG=true
 # cmake -DCMAKE_BUILD_TYPE=Release -DOMS_DEMO=true

app/server/Models/Db.h

@@ -0,0 +1,26 @@
+/**
+ * Karaka
+ *
+ * @package   Models
+ * @copyright Dennis Eichhorn
+ * @license   OMS License 1.0
+ * @version   1.0.0
+ * @link      https://karaka.app
+ */
+#ifndef MODELS_DB_H
+#define MODELS_DB_H
+
+namespace Models {
+    class Db {
+        private:
+
+        public:
+            static inline
+            int setup_connection (char *cfg)
+            {
+                return 0;
+            }
+    };
+}
+
+#endif

app/server/build/install.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+sudo apt-get install sqlite3 libsqlite3-dev
+sudo apt install default-libmysqlclient-dev
+sudo apt-get install libxml2-dev
+
+# install maria db https://mariadb.com/docs/connect/programming-languages/cpp/install/

app/server/cOMS

@@ -1 +1 @@
-Subproject commit cd71fb74b146e1fffefafe6f8f053ec4ef4a1096
+Subproject commit 6f9f0c03aa5edab86b7c9eec9efa69367997b0d9

app/server/main.cpp

@@ -9,8 +9,17 @@
  */
 
 #include <stdio.h>
+#include <stdlib.h>
+
+#include <mysql.h>
+#include <curl/curl.h>
 
 #include "cOMS/Utils/ArrayUtils.h"
+#include "cOMS/Utils/FileUtils.h"
+#include "cOMS/Hash/MeowHash.h"
+#include "cOMS/Utils/Parser/Json.h"
+
+#include "Models/Db.h"
 
 #ifndef OMS_DEMO
     #define OMS_DEMO false
@@ -33,19 +42,74 @@ void printVersion()
     printf("Version: 1.0.0\n");
 }
 
+void parseConfigFile()
+{
+    FILE *fp = fopen("config.json");
+
+    nlohmann::json config = nlohmann::json::parse(fp);
+}
+
+bool isResourceModified(char *filename, time_t last_change)
+{
+    return oms_abs(Utils::FileUtils::last_modification(filename) - last_change) > 1;
+}
+
+bool hasResourceContentChanged(char *filename1, char *filename2)
+{
+    Utils::FileUtils::file_body f1 = Utils::FileUtils::read_file(filename1);
+    Utils::FileUtils::file_body f2 = Utils::FileUtils::read_file(filename2);
+
+    Hash::Meow::meow_u128 h1 = Hash::Meow::MeowHash(Hash::Meow::MeowDefaultSeed, f1.size, f1.content);
+    Hash::Meow::meow_u128 h2 = Hash::Meow::MeowHash(Hash::Meow::MeowDefaultSeed, f2.size, f2.content);
+
+    bool areHashesEqual = Hash::Meow::MeowHashesAreEqual(h1, h2);
+
+    free(f1.content);
+    free(f2.content);
+
+    return areHashesEqual;
+}
+
+void saveResourceChange()
+{
+
+}
+
+MYSQL *con = null;
+
 int main(int argc, char **argv)
 {
-    bool hasHelpCmd  = Utils::ArrayUtils::has_arg("-h", argv, argc);
+    bool hasHelpCmd = Utils::ArrayUtils::has_arg("-h", argv, argc);
     if (hasHelpCmd) {
         printHelp();
 
         return 0;
     }
 
-    bool hasVersionCmd  = Utils::ArrayUtils::has_arg("-v", argv, argc);
+    bool hasVersionCmd = Utils::ArrayUtils::has_arg("-v", argv, argc);
     if (hasVersionCmd) {
         printVersion();
 
         return 0;
     }
+
+    if (!Utils::FileUtils::file_exists("config.json")) {
+        printf("No config file available.");
+
+        return -1;
+    }
+
+    unsigned long resourceId = (unsigned long) Utils::ArrayUtils::get_arg("-r", argv, argc);
+
+
+    // read config file
+    // create database connection (either mariadb or sqlite)
+    // @todo create wrapper for sqlite, mysql and postgresql
+
+    con = mysql_init(NULL);
+    if (mysql_real_connect(con, "localhost", "root", "root_passwd", NULL, 0, NULL, 0) == NULL) {
+        fprintf(stderr, "%s\n", mysql_error(con));
+        mysql_close(con);
+        exit(1);
+    }
 }

app/web/Install/db.json

@@ -303,6 +303,11 @@
                 "type": "VARCHAR(255)",
                 "null": false
             },
+            "resource_xpath": {
+                "name": "resource_xpath",
+                "type": "VARCHAR(255)",
+                "null": false
+            },
             "resource_hash": {
                 "name": "resource_hash",
                 "type": "BLOB(64)",