From da3ac99b134035a1616a50e229e5c9e602fc203a Mon Sep 17 00:00:00 2001
From: nujabes403 <nujabes403@gmail.com>
Date: Mon, 18 Dec 2023 21:18:49 +0900
Subject: [PATCH] fix: fix near-contract-standards event emission

---
 .../src/fungible_token/events.ts              | 21 ++++++++++++-------
 .../src/non_fungible_token/events.ts          | 11 +++++++---
 packages/near-contract-standards/src/util.ts  |  3 +++
 3 files changed, 24 insertions(+), 11 deletions(-)
 create mode 100644 packages/near-contract-standards/src/util.ts

diff --git a/packages/near-contract-standards/src/fungible_token/events.ts b/packages/near-contract-standards/src/fungible_token/events.ts
index 96a613c0..862d0ecb 100644
--- a/packages/near-contract-standards/src/fungible_token/events.ts
+++ b/packages/near-contract-standards/src/fungible_token/events.ts
@@ -18,19 +18,24 @@
 import { NearEvent } from "../event";
 import { Option } from "../non_fungible_token/utils";
 import { AccountId, Balance } from "near-sdk-js";
+import { toSnakeCase } from "../util";
 
 export type Nep141EventKind = FtMint[] | FtTransfer[] | FtBurn[];
 
 export class Nep141Event extends NearEvent {
-    version: string;
-    event_kind: Nep141EventKind;
-
-    constructor(version: string, event_kind: Nep141EventKind) {
-      super();
-      this.version = version;
-      this.event_kind = event_kind;
-    }
+  standard: string;
+  version: string;
+  event: string;
+  data: Nep141EventKind;
+
+  constructor(version: string, event_kind: Nep141EventKind) {
+    super();
+    this.standard = "nep141"
+    this.version = version
+    this.event = toSnakeCase(event_kind[0].constructor.name)
+    this.data = event_kind
   }
+}
 
 /** Data to log for an FT mint event. To log this event, call [`.emit()`](FtMint::emit). */
 export class FtMint {
diff --git a/packages/near-contract-standards/src/non_fungible_token/events.ts b/packages/near-contract-standards/src/non_fungible_token/events.ts
index f8d5e810..c94d374b 100644
--- a/packages/near-contract-standards/src/non_fungible_token/events.ts
+++ b/packages/near-contract-standards/src/non_fungible_token/events.ts
@@ -16,17 +16,22 @@
 import { AccountId } from "near-sdk-js";
 import { NearEvent } from "../event";
 import { TokenId } from "./token";
+import { toSnakeCase } from "../util";
 
 export type Nep171EventKind = NftMint[] | NftTransfer[] | NftBurn[];
 
 export class Nep171Event extends NearEvent {
+  standard: string;
   version: string;
-  event_kind: Nep171EventKind;
+  event: string;
+  data: Nep171EventKind;
 
   constructor(version: string, event_kind: Nep171EventKind) {
     super();
-    this.version = version;
-    this.event_kind = event_kind;
+    this.standard = "nep171"
+    this.version = version
+    this.event = toSnakeCase(event_kind[0].constructor.name)
+    this.data = event_kind
   }
 }
 
diff --git a/packages/near-contract-standards/src/util.ts b/packages/near-contract-standards/src/util.ts
new file mode 100644
index 00000000..6878f2d9
--- /dev/null
+++ b/packages/near-contract-standards/src/util.ts
@@ -0,0 +1,3 @@
+export const toSnakeCase = (str: string) => {
+  return str.replace(/[A-Z]/g, (letter, index) => { return index == 0 ? letter.toLowerCase() : '_'+ letter.toLowerCase();});
+}
\ No newline at end of file