update hook

update hook

add test and validation

add estimate fee func

fix estimated fee error

add hook utils

packages/xrpl/src/models/transactions/setHook.ts

@@ -17,6 +17,7 @@ export interface SetHook extends BaseTransaction {
 }
 
 const MAX_HOOKS = 4
+const HEX_REGEX = /^[0-9A-Fa-f]{64}$/u
 
 /**
  * Verify the form and type of an SetHook at runtime.
@@ -27,21 +28,29 @@ const MAX_HOOKS = 4
 export function validateSetHook(tx: Record<string, unknown>): void {
   validateBaseTransaction(tx)
 
-  if (tx.Hooks === undefined) {
-    throw new ValidationError('SetHook: missing field Hooks')
-  }
-
   if (!Array.isArray(tx.Hooks)) {
     throw new ValidationError('SetHook: invalid Hooks')
   }
 
-  if (tx.Hooks.length === 0) {
-    throw new ValidationError('SetHook: need at least 1 hook in Hooks')
-  }
-
   if (tx.Hooks.length > MAX_HOOKS) {
     throw new ValidationError(
       `SetHook: maximum of ${MAX_HOOKS} hooks allowed in Hooks`,
     )
   }
+
+  for (const hook of tx.Hooks) {
+    // eslint-disable-next-line @typescript-eslint/consistent-type-assertions -- Should be a Hook
+    const hookObject = hook as Hook
+    const { HookOn, HookNamespace } = hookObject.Hook
+    if (HookOn !== undefined && !HEX_REGEX.test(HookOn)) {
+      throw new ValidationError(
+        `SetHook: HookOn in Hook must be a 256-bit (32-byte) hexadecimal value`,
+      )
+    }
+    if (HookNamespace !== undefined && !HEX_REGEX.test(HookNamespace)) {
+      throw new ValidationError(
+        `SetHook: HookNamespace in Hook must be a 256-bit (32-byte) hexadecimal value`,
+      )
+    }
+  }
 }