From 36324f700e84c3ee33f1fcfecbf5d947fad5bdac Mon Sep 17 00:00:00 2001
From: Dust <dustr94@gmail.com>
Date: Wed, 18 Dec 2024 18:06:10 -0300
Subject: [PATCH] CU-86a5ypu8q - BS Lib - Fix issue that is limiting tokens we
 can swap FROM to just a couple options

---
 .../CU-86a5ypu8q_2024-12-18-20-59.json        | 10 ++++++++
 .../bs-swap/src/services/SimpleSwapService.ts | 24 +++++++++++++++++--
 2 files changed, 32 insertions(+), 2 deletions(-)
 create mode 100644 common/changes/@cityofzion/bs-swap/CU-86a5ypu8q_2024-12-18-20-59.json

diff --git a/common/changes/@cityofzion/bs-swap/CU-86a5ypu8q_2024-12-18-20-59.json b/common/changes/@cityofzion/bs-swap/CU-86a5ypu8q_2024-12-18-20-59.json
new file mode 100644
index 0000000..1435051
--- /dev/null
+++ b/common/changes/@cityofzion/bs-swap/CU-86a5ypu8q_2024-12-18-20-59.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@cityofzion/bs-swap",
+      "comment": "Remove mandatory decimals and fetch it in setTokenToUse function if it doesn't exist",
+      "type": "patch"
+    }
+  ],
+  "packageName": "@cityofzion/bs-swap"
+}
\ No newline at end of file
diff --git a/packages/bs-swap/src/services/SimpleSwapService.ts b/packages/bs-swap/src/services/SimpleSwapService.ts
index 61c5156..bf5b131 100644
--- a/packages/bs-swap/src/services/SimpleSwapService.ts
+++ b/packages/bs-swap/src/services/SimpleSwapService.ts
@@ -27,7 +27,7 @@ export class SimpleSwapService<BSName extends string = string> implements SwapSe
   #chainsByServiceName: Partial<Record<BSName, string[]>>
 
   #internalAvailableTokensToUse: SwapServiceLoadableValue<SimpleSwapApiCurrency<BSName>[]> = {
-    loading: true,
+    loading: false,
     value: null,
   }
   #internalTokenToUse: SwapServiceLoadableValue<SimpleSwapApiCurrency<BSName>> = { loading: false, value: null }
@@ -232,15 +232,18 @@ export class SimpleSwapService<BSName extends string = string> implements SwapSe
 
   async init() {
     try {
+      this.#availableTokensToUse = { loading: true }
+
       const tokens = await this.#api.getCurrencies({
         blockchainServicesByName: this.#blockchainServicesByName,
         chainsByServiceName: this.#chainsByServiceName,
       })
 
-      const filteredTokens = tokens.filter(token => token.blockchain && token.decimals !== undefined && token.hash)
+      const filteredTokens = tokens.filter(token => token.blockchain && token.hash)
 
       this.#availableTokensToUse = { loading: false, value: filteredTokens }
     } catch (error: any) {
+      this.#availableTokensToUse = { loading: false, value: [] }
       this.eventEmitter.emit('error', error.message)
       throw error
     }
@@ -249,6 +252,7 @@ export class SimpleSwapService<BSName extends string = string> implements SwapSe
   async setTokenToUse(token: SwapServiceToken<BSName> | null): Promise<void> {
     this.#amountToReceive = { loading: false, value: null }
     this.#amountToUseMinMax = { loading: false, value: null }
+    this.#tokenToUse = { loading: true }
 
     if (!this.#availableTokensToUse.value) throw new Error('Available tokens to use is not set')
 
@@ -259,6 +263,22 @@ export class SimpleSwapService<BSName extends string = string> implements SwapSe
       if (!simpleSwapCurrency) throw new Error('You are trying to use a token that is not available')
     }
 
+    if (!token?.blockchain || !token.hash) throw new Error('Token is not valid')
+
+    if (simpleSwapCurrency && simpleSwapCurrency.decimals === undefined) {
+      let decimals = 6
+
+      try {
+        const service = this.#blockchainServicesByName[token.blockchain]
+        const tokenInfo = await service.blockchainDataService.getTokenInfo(token.hash)
+        decimals = tokenInfo.decimals
+      } catch {
+        /* empty */
+      }
+
+      simpleSwapCurrency.decimals = decimals
+    }
+
     this.#tokenToUse = { loading: false, value: simpleSwapCurrency }
 
     if (this.#accountToUse.value?.blockchain !== simpleSwapCurrency?.blockchain) {