@metamask/snaps-rpc-methods
Version:
MetaMask Snaps JSON-RPC method implementations
47 lines • 1.79 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getFileHandler = exports.GetFileArgsStruct = void 0;
const rpc_errors_1 = require("@metamask/rpc-errors");
const snaps_sdk_1 = require("@metamask/snaps-sdk");
const superstruct_1 = require("@metamask/superstruct");
const utils_1 = require("@metamask/utils");
exports.GetFileArgsStruct = (0, superstruct_1.object)({
path: (0, superstruct_1.string)(),
encoding: (0, superstruct_1.optional)((0, superstruct_1.union)([
(0, snaps_sdk_1.enumValue)(snaps_sdk_1.AuxiliaryFileEncoding.Base64),
(0, snaps_sdk_1.enumValue)(snaps_sdk_1.AuxiliaryFileEncoding.Hex),
(0, snaps_sdk_1.enumValue)(snaps_sdk_1.AuxiliaryFileEncoding.Utf8),
])),
});
const hookNames = {
getSnapFile: true,
};
exports.getFileHandler = {
methodNames: ['snap_getFile'],
implementation,
hookNames,
};
/**
* The `snap_getFile` method implementation.
*
* @param req - The JSON-RPC request object.
* @param res - The JSON-RPC response object.
* @param _next - The `json-rpc-engine` "next" callback. Not used by this
* function.
* @param end - The `json-rpc-engine` "end" callback.
* @param hooks - The RPC method hooks.
* @param hooks.getSnapFile - The function to load a static snap file.
* @returns Nothing.
*/
async function implementation(req, res, _next, end, { getSnapFile }) {
const { params } = req;
(0, utils_1.assertStruct)(params, exports.GetFileArgsStruct, 'Invalid "snap_getFile" parameters', rpc_errors_1.rpcErrors.invalidParams);
try {
res.result = await getSnapFile(params.path, params.encoding ?? snaps_sdk_1.AuxiliaryFileEncoding.Base64);
}
catch (error) {
return end(error);
}
return end();
}
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