From 0c72fae9a23d86ec5bf5bd4de42f48f72221b188 Mon Sep 17 00:00:00 2001
From: Claus-Peter Huebner <claus-peter.huebner@email.de>
Date: Thu, 17 Aug 2023 14:09:15 +0200
Subject: [PATCH] first steps of starting X-sendCoins

---
 .../src/graphql/arg/TransactionSendArgs.ts    |  3 ++
 .../graphql/resolver/TransactionResolver.ts   | 39 ++++++++++++-------
 .../src/graphql/resolver/util/communities.ts  | 19 +++++++++
 frontend/src/graphql/mutations.js             |  2 +-
 4 files changed, 47 insertions(+), 16 deletions(-)
 create mode 100644 backend/src/graphql/resolver/util/communities.ts

diff --git a/backend/src/graphql/arg/TransactionSendArgs.ts b/backend/src/graphql/arg/TransactionSendArgs.ts
index ecda848d1..010c71183 100644
--- a/backend/src/graphql/arg/TransactionSendArgs.ts
+++ b/backend/src/graphql/arg/TransactionSendArgs.ts
@@ -3,6 +3,9 @@ import { ArgsType, Field } from 'type-graphql'
 
 @ArgsType()
 export class TransactionSendArgs {
+  @Field(() => String)
+  communityIdentifier: string
+
   @Field(() => String)
   identifier: string
 
diff --git a/backend/src/graphql/resolver/TransactionResolver.ts b/backend/src/graphql/resolver/TransactionResolver.ts
index ba5d6e155..2cf6abb0d 100644
--- a/backend/src/graphql/resolver/TransactionResolver.ts
+++ b/backend/src/graphql/resolver/TransactionResolver.ts
@@ -34,6 +34,7 @@ import { virtualLinkTransaction, virtualDecayTransaction } from '@/util/virtualT
 
 import { BalanceResolver } from './BalanceResolver'
 import { MEMO_MAX_CHARS, MEMO_MIN_CHARS } from './const/const'
+import { isHomeCommunity } from './util/communities'
 import { findUserByIdentifier } from './util/findUserByIdentifier'
 import { getLastTransaction } from './util/getLastTransaction'
 import { getTransactionList } from './util/getTransactionList'
@@ -317,24 +318,32 @@ export class TransactionResolver {
   @Authorized([RIGHTS.SEND_COINS])
   @Mutation(() => Boolean)
   async sendCoins(
-    @Args() { identifier, amount, memo }: TransactionSendArgs,
+    @Args() { communityIdentifier, identifier, amount, memo }: TransactionSendArgs,
     @Ctx() context: Context,
   ): Promise<boolean> {
-    logger.info(`sendCoins(identifier=${identifier}, amount=${amount}, memo=${memo})`)
-    if (amount.lte(0)) {
-      throw new LogError('Amount to send must be positive', amount)
+    logger.info(
+      `sendCoins(communityIdentifier=${communityIdentifier}, identifier=${identifier}, amount=${amount}, memo=${memo})`,
+    )
+    if (!communityIdentifier || (await isHomeCommunity(communityIdentifier))) {
+      // processing a local sendCoins
+      if (amount.lte(0)) {
+        throw new LogError('Amount to send must be positive', amount)
+      }
+
+      const senderUser = getUser(context)
+
+      // validate recipient user
+      const recipientUser = await findUserByIdentifier(identifier)
+      if (!recipientUser) {
+        throw new LogError('The recipient user was not found', recipientUser)
+      }
+
+      await executeTransaction(amount, memo, senderUser, recipientUser)
+      logger.info('successful executeTransaction', amount, memo, senderUser, recipientUser)
+    } else {
+      // processing a x-community sendCoins
+      logger.debug('processing a x-community transaction...')
     }
-
-    const senderUser = getUser(context)
-
-    // validate recipient user
-    const recipientUser = await findUserByIdentifier(identifier)
-    if (!recipientUser) {
-      throw new LogError('The recipient user was not found', recipientUser)
-    }
-
-    await executeTransaction(amount, memo, senderUser, recipientUser)
-    logger.info('successful executeTransaction', amount, memo, senderUser, recipientUser)
     return true
   }
 }
diff --git a/backend/src/graphql/resolver/util/communities.ts b/backend/src/graphql/resolver/util/communities.ts
new file mode 100644
index 000000000..49a3f7744
--- /dev/null
+++ b/backend/src/graphql/resolver/util/communities.ts
@@ -0,0 +1,19 @@
+import { Community as DbCommunity } from '@entity/Community'
+
+export async function isHomeCommunity(communityIdentifier: string): Promise<boolean> {
+  const homeCommunity = await DbCommunity.findOneByOrFail({ foreign: false })
+  if (communityIdentifier === homeCommunity.name) {
+    return true
+  } else if (communityIdentifier === homeCommunity.communityUuid) {
+    return true
+  } else if (communityIdentifier === homeCommunity.url) {
+    return true
+  } else {
+    return false
+  }
+}
+
+export async function getCommunityUrl(communityIdentifier: string): Promise<string> {
+  const community = await DbCommunity.findOneByOrFail({ name: communityIdentifier })
+  return community.url
+}
diff --git a/frontend/src/graphql/mutations.js b/frontend/src/graphql/mutations.js
index 2f6b53ac9..2065d92a8 100644
--- a/frontend/src/graphql/mutations.js
+++ b/frontend/src/graphql/mutations.js
@@ -72,7 +72,7 @@ export const createUser = gql`
 
 export const sendCoins = gql`
   mutation($identifier: String!, $amount: Decimal!, $memo: String!) {
-    sendCoins(identifier: $identifier, amount: $amount, memo: $memo)
+    sendCoins(communityIdentifier: $communityIdentifier, identifier: $identifier, amount: $amount, memo: $memo)
   }
 `