feat: add a CAL importer for casper

libs/ledgerjs/packages/cryptoassets/src/crypto-assets-importer/importers/casper/index.ts

@@ -0,0 +1,63 @@
+import fs from "fs";
+import path from "path";
+import { fetchTokensFromCALService } from "../../fetch";
+
+type CasperToken = [
+  string, // assetCode
+  string, // assetIssuer
+  "Casper", // assetType (note: only used in Receive asset message and always should be "Casper")
+  string, // name
+  number, // precision
+  boolean, // enableCountervalues
+];
+
+export const importCasperTokens = async (outputDir: string) => {
+  try {
+    console.log("importing casper tokens...");
+    const { tokens, hash } = await fetchTokensFromCALService({ blockchain_name: "casper" }, [
+      "ticker",
+      "contract_address",
+      "name",
+      "decimals",
+    ]);
+    const casperTokens: CasperToken[] = tokens.map(token => [
+      token.ticker.toLowerCase(),
+      token.contract_address.toLowerCase(),
+      "Casper",
+      token.name,
+      token.decimals,
+      true,
+    ]);
+
+    const filePath = path.join(outputDir, "casper");
+    const casperTypeStringified = `export type CasperToken = [
+  string, // assetCode
+  string, // assetIssuer
+  "Casper", // assetType (note: only used in Receive asset message and always should be "Casper")
+  string, // name
+  number, // precision
+  boolean, // enableCountervalues
+];`;
+
+    fs.writeFileSync(`${filePath}.json`, JSON.stringify(casperTokens));
+    if (hash) {
+      fs.writeFileSync(`${filePath}-hash.json`, JSON.stringify(hash));
+    }
+
+    fs.writeFileSync(
+      `${filePath}.ts`,
+      `${casperTypeStringified}
+
+import tokens from "./casper.json";
+
+${hash ? `export { default as hash } from "./casper-hash.json";` : ""}
+
+export default tokens as CasperToken[];
+`,
+    );
+
+    console.log("importing casper tokens sucess");
+  } catch (err) {
+    console.error(err);
+  }
+};

libs/ledgerjs/packages/cryptoassets/src/crypto-assets-importer/index.ts

@@ -2,6 +2,7 @@ import path from "path";
 
 import { importAsaTokens } from "./importers/asa";
 import { importCardanoNativeTokens } from "./importers/cardanoNative";
+import { importCasperTokens } from "./importers/casper";
 import { importEIP712, importEIP712v2 } from "./importers/eip712";
 import { importESDTTokens } from "./importers/esdt";
 import { importEVMTokens } from "./importers/evm";
@@ -28,6 +29,7 @@ const importTokens = async () => {
     importEVMTokens(outputFolder),
     importAsaTokens(outputFolder),
     importCardanoNativeTokens(outputFolder),
+    importCasperTokens(outputFolder),
     importESDTTokens(outputFolder),
     importSPLTokens(outputFolder),
     importStellarTokens(outputFolder),