WIP Implementing core/ledger

cmd/chron-cli/main.go

@@ -1,4 +1,46 @@
 package main
 
+import (
+	"fmt"
+	"time"
+
+	"git.michelsen.id/chron/core"
+	"github.com/google/uuid"
+	"lukechampine.com/blake3"
+)
+
 func main() {
+	payload := []byte{0, 1, 0, 1}
+	payloadDigest := blake3.Sum256(payload)
+
+	entryID, err := uuid.NewV7()
+	entryIDBytes, err := entryID.MarshalBinary()
+	if err != nil {
+		return
+	}
+	ledgerID, err := uuid.NewV7()
+	ledgerIDBytes, err := ledgerID.MarshalBinary()
+	if err != nil {
+		return
+	}
+	payloadID, err := uuid.NewV7()
+	payloadIDBytes, err := payloadID.MarshalBinary()
+	if err != nil {
+		return
+	}
+
+	entry := core.Entry{
+		EntryID:       core.EntryID(entryIDBytes),
+		LedgerID:      core.LedgerID(ledgerIDBytes),
+		Seq:           1,
+		Timestamp:     time.Now(),
+		PayloadID:     core.PayloadID(payloadIDBytes),
+		PayloadDigest: payloadDigest,
+	}
+
+	entryHash := core.HashEntry(entry)
+	entry.EntryHash = entryHash
+
+	fmt.Printf("Entry: %+v\n", entry)
+	fmt.Printf("EntryHash: %x\n", entryHash)
 }