✨ Pay for upload

pkg/internal/services/payment.go

@@ -0,0 +1,60 @@
+package services
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"git.solsynth.dev/hypernet/paperclip/pkg/internal/gap"
+	wproto "git.solsynth.dev/hypernet/wallet/pkg/proto"
+	"github.com/rs/zerolog/log"
+	"github.com/samber/lo"
+)
+
+const DiscountFileSize = 52428800 // 50 MiB
+
+// PlaceOrder create a transaction if needed for user
+// Pricing according here: https://kb.solsynth.dev/solar-network/wallet#file-uploads
+func PlaceOrder(user uint, filesize int64, withDiscount bool) error {
+	if filesize <= DiscountFileSize && withDiscount {
+		// Discount included
+		return nil
+	}
+
+	var amount float64
+	if withDiscount {
+		billableSize := filesize - DiscountFileSize
+		amount = float64(billableSize) / 1024 / 1024 * 1
+	} else if filesize > DiscountFileSize {
+		amount = 50 + float64(filesize-DiscountFileSize)/1024/1024*5
+	} else {
+		amount = float64(filesize) / 1024 / 1024 * 1
+	}
+
+	if !withDiscount {
+		amount += 10 // Service fee
+	}
+
+	conn, err := gap.Nx.GetClientGrpcConn("wa")
+	if err != nil {
+		return fmt.Errorf("unable to connect wallet: %v", err)
+	}
+
+	wc := wproto.NewPaymentServiceClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*3)
+	defer cancel()
+	resp, err := wc.MakeTransactionWithAccount(ctx, &wproto.MakeTransactionWithAccountRequest{
+		PayerAccountId: lo.ToPtr(uint64(user)),
+		Amount:         amount,
+		Remark:         "File Uploading Fee",
+	})
+	if err != nil {
+		return err
+	}
+
+	log.Info().
+		Uint64("transaction", resp.Id).Float64("amount", amount).Bool("discount", withDiscount).
+		Msg("Order placed for charge file uploading fee...")
+
+	return nil
+}