Feat/dsdk 284 create CAL service loaders

libs/ledgerjs/packages/context-module/src/external-plugin/__tests__/abi.json

@@ -0,0 +1,92 @@
+[
+  {
+    "inputs": [
+      {
+        "internalType": "address[]",
+        "name": "fromToken",
+        "type": "address[]"
+      }
+    ],
+    "name": "arrayParam",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "components": [
+          {
+            "internalType": "address",
+            "name": "address1",
+            "type": "address"
+          },
+          {
+            "components": [
+              {
+                "components": [
+                  {
+                    "components": [
+                      {
+                        "internalType": "address[]",
+                        "name": "addresses",
+                        "type": "address[]"
+                      }
+                    ],
+                    "internalType": "struct SimpleContract.Struct3",
+                    "name": "param3",
+                    "type": "tuple"
+                  }
+                ],
+                "internalType": "struct SimpleContract.Struct2[]",
+                "name": "param2",
+                "type": "tuple[]"
+              }
+            ],
+            "internalType": "struct SimpleContract.Struct1",
+            "name": "param1",
+            "type": "tuple"
+          }
+        ],
+        "internalType": "struct SimpleContract.ComplexStruct",
+        "name": "complexStruct",
+        "type": "tuple"
+      }
+    ],
+    "name": "complexStructParam",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "fromToken",
+        "type": "address"
+      },
+      {
+        "internalType": "address",
+        "name": "toToken",
+        "type": "address"
+      }
+    ],
+    "name": "multipleParams",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "fromToken",
+        "type": "address"
+      }
+    ],
+    "name": "singleParam",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  }
+]

libs/ledgerjs/packages/context-module/src/external-plugin/__tests__/contract.sol

@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-3.0
+
+pragma solidity >=0.8.2 <0.9.0;
+
+contract SimpleContract {
+    struct Struct3 {
+        address[] addresses;
+    }
+
+    struct Struct2 {
+        Struct3 param3;
+    }
+
+    struct Struct1 {
+        Struct2[] param2;
+    }
+
+    struct ComplexStruct {
+        address address1;
+        Struct1 param1;
+    }
+
+    function singleParam(address fromToken) public {
+        // Do nothing
+    }
+
+    function multipleParams(address fromToken, address toToken) public {
+        // Do nothing
+    }
+
+    function arrayParam(address[] calldata fromToken) public {
+        // Do nothing
+    }
+
+    function complexStructParam(ComplexStruct calldata complexStruct) public {
+        // Do nothing
+    }
+}

libs/ledgerjs/packages/context-module/src/external-plugin/data/DappDTO.ts

@@ -0,0 +1,40 @@
+export interface DappDTO {
+  b2c: B2c;
+  abis: Abis;
+  b2c_signatures: B2cSignatures;
+}
+
+export interface B2c {
+  blockchainName: string;
+  chainId: number;
+  contracts: Contract[];
+  name: string;
+}
+
+interface Contract {
+  address: string;
+  contractName: string;
+  selectors: { [selector: string]: ContractSelector };
+}
+
+interface ContractSelector {
+  erc20OfInterest: string[];
+  method: string;
+  plugin: string;
+}
+
+export interface Abis {
+  [address: string]: object[];
+}
+
+export interface B2cSignatures {
+  [address: string]: {
+    [selector: string]: B2cSignature;
+  };
+}
+
+interface B2cSignature {
+  plugin: string;
+  serialized_data: string;
+  signature: string;
+}

libs/ledgerjs/packages/context-module/src/external-plugin/data/ExternalPluginDataSource.ts

@@ -0,0 +1,11 @@
+import { DappInfos } from "../model/DappInfos";
+
+export type GetDappInfos = {
+  address: string;
+  selector: `0x${string}`;
+  chainId: number;
+};
+
+export interface ExternalPluginDataSource {
+  getDappInfos(params: GetDappInfos): Promise<DappInfos | undefined>;
+}