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Add options for passing client's credentials with env variables #42

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36 changes: 34 additions & 2 deletions lib.js
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Original file line number Diff line number Diff line change
Expand Up @@ -6,9 +6,11 @@ import { connect } from '@ucanto/client'
import * as CAR from '@ucanto/transport/car'
import * as CBOR from '@ucanto/transport/cbor'
import * as HTTP from '@ucanto/transport/http'
import { derive } from "@ucanto/principal/ed25519";
import { parse } from '@ipld/dag-ucan/did'
import { create } from '@web3-storage/w3up-client'
import { Client, create } from '@web3-storage/w3up-client'
import { StoreConf } from '@web3-storage/access/stores/store-conf'
import { AgentData } from "@web3-storage/access";
import { CarReader } from '@ipld/car'

/**
Expand Down Expand Up @@ -42,8 +44,14 @@ export function filesize (bytes) {
* Get a new API client configured from env vars.
*/
export function getClient () {
if (process.env.W3_PRINCIPAL_KEY && process.env.W3_DELEGATION_PROOF) {
// use credentials from env variables
return createFromStatic(process.env.W3_PRINCIPAL_KEY, process.env.W3_DELEGATION_PROOF)
}

// use stored credentials
const store = new StoreConf({ profile: process.env.W3_STORE_NAME ?? 'w3cli' })

let serviceConf
if (
process.env.W3_ACCESS_SERVICE_DID &&
Expand Down Expand Up @@ -193,3 +201,27 @@ async function * filesFromDir (dir, filter) {
}
}
}

async function createFromStatic(principalKey, delegationProof) {
// create a client with the UCAN private key
const principal = await derive(
Buffer.from(principalKey, "base64")
);
const data = await AgentData.create({ principal });
const client = new Client(data);

// create a space with the delegation proof
const blocks = [];
const reader = await CarReader.fromBytes(
Buffer.from(delegationProof, "base64")
);
for await (const block of reader.blocks()) {
blocks.push(block);
}
const proof = importDAG(blocks);

const space = await client.addSpace(proof);
await client.setCurrentSpace(space.did());

return client;
}