commit inicial do projeto

internal/api/tx_handlers.go

@@ -0,0 +1,30 @@
+package api
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+	"dejo_node/internal/transactions"
+)
+
+func (h *Handler) SendTransaction(w http.ResponseWriter, r *http.Request) {
+	log.Println("📥 Nova transação recebida")
+	var tx transactions.Transaction
+	decoder := json.NewDecoder(r.Body)
+	if err := decoder.Decode(&tx); err != nil {
+		http.Error(w, "formato inválido", http.StatusBadRequest)
+		return
+	}
+
+	if tx.From == "" || tx.To == "" || tx.Value <= 0 {
+		http.Error(w, "transação inválida", http.StatusBadRequest)
+		return
+	}
+
+	h.Mempool.Add(&tx)
+	log.Printf("✅ Transação adicionada ao mempool: %+v\n", tx)
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusOK)
+	json.NewEncoder(w).Encode(map[string]string{"status": "ok"})
+}