diff --git a/.clang-format b/.clang-format
new file mode 100644
index 0000000..73da0c5
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,9 @@
+
+BasedOnStyle: LLVM
+IndentWidth: 4
+#-------------
+
+Language: Cpp
+
+PointerAlignment: Left
+ColumnLimit: 160
\ No newline at end of file
diff --git a/db.cpp b/db.cpp
index fc8dbbf..8792572 100644
--- a/db.cpp
+++ b/db.cpp
@@ -1,21 +1,55 @@
 #include "headers/db.h"
 
-namespace db 
-{
+namespace data {
 
+char* error_message; // no clue, prolly error message
 
-    static int callback(void *NotUsed, int argc, char **argv, char **azColName){
-	int i;
-	for(i=0; i<argc; i++)
-	{
-		std::cout<<azColName[i]<<" = " << (argv[i] ? argv[i] : "NULL")<<"\n";
-	}
-	std::cout<<"\n";
-	return 0;
+static int callback(void* NotUsed, int argc, char** argv, char** azColName) {
+    int i;
+    for (i = 0; i < argc; i++) {
+        std::cout << azColName[i] << " = " << (argv[i] ? argv[i] : "NULL") << "\n";
+    }
+    std::cout << "\n";
+    return 0;
 }
-  
 
+void open_db(sqlite3* db) {
+    int status = sqlite3_open("database.sqlite", &db);
+    if (!status) {
+        std::cout << "Can't open database: " << sqlite3_errmsg(db) << "\n";
+    }
+}
 
-	// sqlite3_close(db);
+void initialize_db(sqlite3* db) {
+    // ugh, sqlite3_exec doesn't accept const strings, so i have to use const
+    // char*
+    const char* customer_table = "create table Customer (id int, name "
+                                 "varchar(50), card_code varchar(20), "
+                                 "verhicle int)";
+    const char* parkspot_table = "create table Park_spot (id int, taken boolean, customer_id int)";
+    const char* parktime_table = "create table Park_time (id int, customer_id int, spot_id int, start "
+                                 "real, end real, duration real)";
+    int success;
 
-}
\ No newline at end of file
+    success = sqlite3_exec(db, customer_table, callback, 0, &error_message);
+    if (success != SQLITE_OK) {
+        std::cout << "SQL error: " << sqlite3_errmsg(db) << "\n";
+        sqlite3_free(error_message);
+        return; // TODO: error handling instead of just logging
+    }
+    success = sqlite3_exec(db, parkspot_table, callback, 0, &error_message);
+    if (success != SQLITE_OK) {
+        std::cout << "SQL error: " << sqlite3_errmsg(db) << "\n";
+        sqlite3_free(error_message);
+        return; // TODO: error handling instead of just logging
+    }
+
+    success = sqlite3_exec(db, parktime_table, callback, 0, &error_message);
+    if (success != SQLITE_OK) {
+        std::cout << "SQL error: " << sqlite3_errmsg(db) << "\n";
+        sqlite3_free(error_message);
+        return; // TODO: error handling instead of just logging
+    }
+}
+
+} // namespace data
\ No newline at end of file
diff --git a/headers/Customer.h b/headers/Customer.h
index 964c087..aa5ee14 100644
--- a/headers/Customer.h
+++ b/headers/Customer.h
@@ -2,14 +2,14 @@
 #define CUSTOMER_H
 #pragma once
 
-#include <vector>
-#include <string>
 #include "Park_time.h"
+#include <string>
+#include <vector>
 
-using std::vector;
 using std::string;
+using std::vector;
 
-// enum type is basically een manier om categories te representen als een integer in the background, maar om t in code 
+// enum type is basically een manier om categories te representen als een integer in the background, maar om t in code
 // aan te geven als de actual category.
 enum class Verhicle_type {
     small = 1,
@@ -22,16 +22,16 @@ db repr of Customer
 int id (not null, auto increment)
 string name (not nulll)
 string card_code (not null)
-Dit moet nog verandert worden. 
+Dit moet nog verandert worden.
 
-card code zou eigenlijk een randomly generated string moeten zijn, die je bv. op een ndf card zou opslaan en zo zou 
+card code zou eigenlijk een randomly generated string moeten zijn, die je bv. op een ndf card zou opslaan en zo zou
 authenticaten bij je parking spot. We kunnen dit ipv of samen met een password gebruiken.
 clock in en out creeert en compleet een park_time object. Voegt het toe aan een vector.
 
 */
 
 class Customer {
-public:
+  public:
     int id;
     string name;
     string card_code;
@@ -41,13 +41,10 @@ public:
     void gen_monthly();
     Customer(int id_, string name_, Verhicle_type verhicle_);
 
-private:
+  private:
     Verhicle_type verhicle;
     vector<Park_time> park_instances;
     string gen_cardcode();
-
 };
 
-
-
 #endif // CUSTOMER_H
\ No newline at end of file
diff --git a/headers/db.h b/headers/db.h
index ff0806d..b2c22ac 100644
--- a/headers/db.h
+++ b/headers/db.h
@@ -1,56 +1,16 @@
+#include <iostream>
 #include <sqlite3.h>
 #include <string>
-#include <iostream>
 
-namespace db 
-{
+namespace data {
 
-    static int callback(void *NotUsed, int argc, char **argv, char **azColName);
+static int callback(void* NotUsed, int argc, char** argv, char** azColName);
 
-    sqlite3* db;
-    char*  error_message;
+void open_db(sqlite3* db_);
 
+/*
+this initializes the table in the database.
+ */
+void initialize_db(sqlite3* db_);
 
-
-    void open_db(sqlite3* db_){
-        int success = sqlite3_open("sqlite.db", &db);
-        if (!success) {
-            std::cout << "Can't open database: "<<sqlite3_errmsg(db)<<"\n";
-        }
-    }
-    // stupid lib
-    void initialize_db(sqlite3* db_){
-        // ugh, sqlite3_exec doesn't accept const strings, so i have to use const char*
-        const char* customer_table = "create table Customer (id int, name varchar(50), card_code varchar(20), verhicle int)";
-        const char* parkspot_table = "create table Park_spot (id int, taken boolean, customer_id int)";
-        const char* parktime_table = "create table Park_time (id int, customer_id int, spot_id int, start real, end real, duration real)";
-        int success;
-
-		success = sqlite3_exec(db_, customer_table, callback, 0, &error_message);
-		if( success!=SQLITE_OK )
-		{
-			std::cout<<"SQL error: "<<sqlite3_errmsg(db)<<"\n";
-			sqlite3_free(error_message);
-            return; // TODO: error handling instead of just logging
-		}
-        success = sqlite3_exec(db_, parkspot_table, callback, 0, &error_message);
-		if( success!=SQLITE_OK )
-		{
-			std::cout<<"SQL error: "<<sqlite3_errmsg(db)<<"\n";
-			sqlite3_free(error_message);
-            return;  // TODO: error handling instead of just logging
-		}
-
-        success = sqlite3_exec(db_, parktime_table, callback, 0, &error_message);
-		if( success!=SQLITE_OK )
-		{
-			std::cout<<"SQL error: "<<sqlite3_errmsg(db)<<"\n";
-			sqlite3_free(error_message);
-            return;  // TODO: error handling instead of just logging
-		}
-
-    }
-
-
-
-}
\ No newline at end of file
+} // namespace data
\ No newline at end of file
diff --git a/main.cpp b/main.cpp
index c460fb5..5de74ad 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,22 +1,22 @@
 #include "headers/Park_spot.h"
+#include "headers/db.h"
 #include <iostream>
 #include <thread> // to make pausing work, not sure if i need chrono, or this, or both
 #include <vector>
 
-
-
 /*
 Code strucure like this:
-class declarations zijn in /headers/class_naam.h, en definitions van de member functs in /class_naam.cpp
-elke klas in zn eigen file omdat ik incomplete class declarations wilt tegengaan, omdat ik ze niet goed begrijp.
-En header/source split om multiple definition errors tegen te gaan.
+class declarations zijn in /headers/class_naam.h, en definitions van de member
+functs in /class_naam.cpp elke klas in zn eigen file omdat ik incomplete class
+declarations wilt tegengaan, omdat ik ze niet goed begrijp. En header/source
+split om multiple definition errors tegen te gaan.
 
 Park_spot representeert een parkeermeter bij elke parkeer spot.
-Een customer is een customer. 
-Park time is een object die reffereert naar parkspot en customer, basically een record die zegt dat
-een customer voor x tijd geparkeert heeft bij spot x, enz.
+Een customer is een customer.
+Park time is een object die reffereert naar parkspot en customer, basically een
+record die zegt dat een customer voor x tijd geparkeert heeft bij spot x, enz.
 
-De client clockt in en uit bij een spot. 
+De client clockt in en uit bij een spot.
  */
 
 void Wait(int sec)
@@ -24,42 +24,35 @@ void Wait(int sec)
 a wait function where 1 sec represents 1 hour irl.
  */
 {
-    std::this_thread::sleep_for(seconds { sec });
+    std::this_thread::sleep_for(seconds{sec});
 }
 
 using std::cout;
 
+int main() {
+    std::vector<Park_spot> spots{1, 2, 3, 4, 5};
+    std::vector<Customer> customers{
+        {1, "Sagar Ram", Verhicle_type::small}, {2, "Shaq", Verhicle_type::medium}, {3, "Josh", Verhicle_type::large}, {4, "Stefano", Verhicle_type::small}};
 
-int main()
-{
-    std::vector<Park_spot> spots {
-        1, 2, 3, 4, 5
-    };
-    std::vector<Customer> customers {
-        { 1, "Sagar Ram", Verhicle_type::small },
-        { 2, "Shaq", Verhicle_type::medium },
-        { 3, "Josh", Verhicle_type::large },
-        { 4, "Stefano", Verhicle_type::small }
-    };
+    // spots[1].clock(&customers[3]); // stefano parks at spot 2
+    // Wait(2);
+    // spots[3].clock(&customers[2]); // josh parks at spot 4
+    // Wait(1);
+    // spots[1].clock(&customers[3]); // stefano clocks out of spot 1
+    // Wait(5);
+    // spots[1].clock(&customers[1]); // shaq clocks in at spot 1
+    // Wait(6);
+    // spots[2].clock(&customers[0]); // sagar clocks in at spot 3. what the fuck
+    //                                // is he doing here?
+    // Wait(2);
+    // spots[2].clock(&customers[0]); // sagar clocks out from spot 2
+    // Wait(3);
+    // spots[3].clock(&customers[2]); // josh clocks out from spot 4
+    // spots[1].clock(&customers[1]); // shaq clocks out at spot 1
 
-    spots[1].clock(&customers[3]); // stefano parks at spot 2
-    Wait(2);
-    spots[3].clock(&customers[2]); // josh parks at spot 4
-    Wait(1);
-    spots[1].clock(&customers[3]); // stefano clocks out of spot 1
-    Wait(5);
-    spots[1].clock(&customers[1]); // shaq clocks in at spot 1
-    Wait(6);
-    spots[2].clock(&customers[0]); // sagar clocks in at spot 3. what the fuck is he doing here?
-    Wait(2);
-    spots[2].clock(&customers[0]); // sagar clocks out from spot 2
-    Wait(3);
-    spots[3].clock(&customers[2]); // josh clocks out from spot 4
-    spots[1].clock(&customers[1]); // shaq clocks out at spot 1
-
-    spots[2].clock(&customers[1]); // shaq clocks out at spot 3
-    Wait(4);
-    spots[2].clock(&customers[1]); // shaq clocks out at spot 2
+    // spots[2].clock(&customers[1]); // shaq clocks out at spot 3
+    // Wait(4);
+    // spots[2].clock(&customers[1]); // shaq clocks out at spot 2
 
     /*
     so:
@@ -68,8 +61,14 @@ int main()
     shaq parked  2 times, once for 4 and another for 11 secs
     sagar parked for 2 secs
     */
-   customers[0].gen_monthly();
-   customers[1].gen_monthly();
-   customers[2].gen_monthly();
-   customers[3].gen_monthly();
-}
\ No newline at end of file
+    customers[0].gen_monthly();
+    customers[1].gen_monthly();
+    customers[2].gen_monthly();
+    customers[3].gen_monthly();
+
+    // test
+    sqlite3* db;
+    data::open_db(db);
+    data::initialize_db(db);
+    sqlite3_close(db);
+}
diff --git a/readme.md b/readme.md
index b0a2f39..b8926fb 100644
--- a/readme.md
+++ b/readme.md
@@ -1,7 +1,7 @@
 
 use 
 ```
-g++ main.cpp Park_time.cpp Customer.cpp Park_spot.cpp -o test.exe
+g++ Park_time.cpp Customer.cpp Park_spot.cpp db.cpp main.cpp -lsqlite3  -o test.exe
 ```
 to build the project