adding revenue handlers and shell

internal/handlers/currency.go

@@ -0,0 +1,44 @@
+package handlers
+
+import (
+	"Portifolio/internal/model"
+	"Portifolio/internal/service"
+	"database/sql"
+	"encoding/json"
+	"net/http"
+
+	_ "github.com/mattn/go-sqlite3"
+)
+
+func AddCurrencyHandler(db *sql.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var input model.CurrencyInput
+		if err := json.NewDecoder(r.Body).Decode(&input); err != nil {
+			http.Error(w, "invalid json", http.StatusBadRequest)
+			return
+		}
+
+		id, err := service.InsertCurrency(db, input)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(http.StatusCreated)
+		json.NewEncoder(w).Encode(map[string]any{"status": "created", "id": id})
+	}
+}
+
+func GetCurrenciesHandler(db *sql.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		currencies, err := service.GetAllCurrencies(db)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		w.Header().Set("Content-Type", "application/json")
+		json.NewEncoder(w).Encode(currencies)
+	}
+}