simple parcel service finder

main.go

@@ -14,89 +14,25 @@ In this project i play around with go. This is my first time writing go, and im
 import (
 	"database/sql"
 	"log"
+	"errors"
 
 	_ "modernc.org/sqlite"
 )
 
-func executeQuery(db *sql.DB, query string) {
+
-	_, err := db.Exec(query)
+func findParcelProvider(code string, postal_code string)(string, error){
-	if err != nil {
+	providers := [4]string{"express", "parcel-nl", "ecommerce", "ecommerce-europe"}
-		log.Printf("%q: %s\n", err, query)
+	for _, v := range providers {
-		return
+		// do http api reqiest
+		success := false
+
+		if (success){
+			return v, nil
 		}
 	}
-
+	return "", errors.New("parcel not found!")
-func createTables(db *sql.DB) {
-	executeQuery(db, `
-		CREATE TABLE shipments (
-			id            INTEGER PRIMARY KEY AUTOINCREMENT,
-			tracking_number TEXT NOT NULL UNIQUE,
-			service       TEXT NOT NULL,
-			sender_name   TEXT,
-			receiver_name TEXT,
-			origin_country  TEXT,
-			origin_city     TEXT,
-			origin_postal   TEXT,
-			origin_address  TEXT,
-			destination_country TEXT,
-			destination_city    TEXT,
-			destination_postal  TEXT,
-			destination_address TEXT,
-			pickup_date   TEXT,
-			estimated_delivery_from TEXT,
-			estimated_delivery_to   TEXT,
-			current_status TEXT,
-			last_update   TEXT DEFAULT (datetime('now')),
-			created_at    TEXT DEFAULT (datetime('now'))
-		);
-
-		-- Status Events: history of status updates
-		CREATE TABLE shipment_events (
-			id            INTEGER PRIMARY KEY,
-			shipment_id   INTEGER NOT NULL,
-			event_time    TEXT NOT NULL,
-			status_code   TEXT NOT NULL,
-			status_desc   TEXT,
-			description   TEXT,
-			remark        TEXT,
-			next_steps    TEXT,
-			location_country TEXT,
-			location_city    TEXT,
-			location_postal  TEXT,
-			FOREIGN KEY (shipment_id) REFERENCES shipments(id)
-		);
-		CREATE INDEX idx_events_shipment_time ON shipment_events(shipment_id, event_time);
-
-		CREATE TABLE shipment_updates (
-			id            INTEGER PRIMARY KEY,
-			shipment_id   INTEGER NOT NULL,
-			update_time   TEXT DEFAULT (datetime('now')),
-			service       TEXT,
-			location_country TEXT,
-			location_city    TEXT,
-			status_code   TEXT,
-			status_desc   TEXT,
-			estimated_from TEXT,
-			estimated_to   TEXT,
-			FOREIGN KEY (shipment_id) REFERENCES shipments(id)
-		);
-		CREATE INDEX idx_updates_shipment_time ON shipment_updates(shipment_id, update_time);
-	`)
-
-	log.Printf("[Database] tables created")
-
 }
 
-func dropTables(db *sql.DB) {
-	executeQuery(db, `
-		DROP TABLE IF EXISTS shipments;
-		DROP TABLE IF EXISTS shipment_events;
-		DROP TABLE IF EXISTS shipment_updates;
-	`)
-
-	log.Printf("[Database] tables dropped")
-
-}
 
 func main() {
 	db, err := sql.Open("sqlite", "./dhl.db")
@@ -105,6 +41,14 @@ func main() {
 	}
 	defer db.Close()
 
-	dropTables(db) // temporarely for debugging
+	code := "blablbla"
-	createTables(db)
+	postal := "1234ab"
+	provider, err := findParcelProvider(code, postal)
+	if (err != nil){
+		log.Fatal(err)
+	}
+
+
+	log.Printf("Code: %s, Postal Code: %s, Tracking Service: %s", code, postal, provider)
+	
 }