@dfinity/agent
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JavaScript and TypeScript library to interact with the Internet Computer
69 lines • 2.83 kB
JavaScript
;
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Object.defineProperty(exports, "__esModule", { value: true });
exports.fetchCandid = fetchCandid;
const principal_1 = require("@dfinity/principal");
const CanisterStatus = __importStar(require("./canisterStatus/index.js"));
const index_ts_1 = require("./agent/http/index.js");
const actor_ts_1 = require("./actor.js");
/**
* Retrieves the Candid interface for the specified canister.
* @param canisterId A string corresponding to the canister ID
* @param agent The agent to use for the request (usually an `HttpAgent`)
* @returns Candid source code
*/
async function fetchCandid(canisterId, agent) {
if (!agent) {
// Create an anonymous `HttpAgent` (adapted from Candid UI)
agent = await index_ts_1.HttpAgent.create();
}
// Attempt to use canister metadata
const status = await CanisterStatus.request({
agent,
canisterId: principal_1.Principal.fromText(canisterId),
paths: ['candid'],
});
const candid = status.get('candid');
if (candid) {
return candid;
}
// Use `__get_candid_interface_tmp_hack` for canisters without Candid metadata
const tmpHackInterface = ({ IDL }) => IDL.Service({
__get_candid_interface_tmp_hack: IDL.Func([], [IDL.Text], ['query']),
});
const actor = actor_ts_1.Actor.createActor(tmpHackInterface, { agent, canisterId });
return (await actor.__get_candid_interface_tmp_hack());
}
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