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Status](https://david-dm.org/alanshaw/drand-client-twitter/status.svg)](https://david-dm.org/alanshaw/drand-client-twitter)\n[![JavaScript Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://standardjs.com)\n\nA client for the drand twitter relay.\n\n## Install\n\nIn [Deno](https://deno.land) you can grab and use the client from a CDN e.g. https://unpkg.com/@alanshaw/drand-client-twitter?module.\n\nIn [Node.js](https://nodejs.org), install with:\n\n```sh\nnpm i @alanshaw/drand-client-twitter\n```\n\n## Usage\n\nThe client uses the [user timeline API](https://developer.twitter.com/en/docs/tweets/timelines/api-reference/get-statuses-user_timeline) exclusively. It is best suited for watching or getting the latest randomness generated. It's possible to get historic randomness up to the API limits of around 3,200 tweets. In order to retrieve historic randomness the client will walk the chain of tweets (max 200 per page).\n\n**Deno**\n\n```js\nimport Client from 'https://unpkg.com/drand-client/drand.js'\nimport Twitter from 'https://unpkg.com/@alanshaw/drand-client-twitter?module'\n\nconst chainInfo = {\n  public_key: '868f005eb8e6e4ca0a47c8a77ceaa5309a47978a7c71bc5cce96366b5d7a569937c529eeda66c7293784a9402801af31',\n  period: 30,\n  genesis_time: 1595431050,\n  hash: '8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce'\n}\n\nasync function main () {\n  const c = await Client.wrap([\n    new Twitter({ screenName: 'loebot', bearerToken: 'AAAAAAAAAAAAAAAAAAAAAHJT...', chainInfo })\n  ], { chainInfo })\n\n  for await (const res of c.watch()) {\n    console.log(res)\n  }\n}\n\nmain()\n```\n\n**Node.js**\n\n```js\nimport Client from 'drand-client'\nimport Twitter from '@alanshaw/drand-client-twitter'\nimport fetch from 'node-fetch'\nimport AbortController from 'abort-controller'\n\nglobal.fetch = fetch\nglobal.AbortController = AbortController\n\nconst chainInfo = {\n  public_key: '868f005eb8e6e4ca0a47c8a77ceaa5309a47978a7c71bc5cce96366b5d7a569937c529eeda66c7293784a9402801af31',\n  period: 30,\n  genesis_time: 1595431050,\n  hash: '8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce'\n}\n\nasync function main () {\n  const c = await Client.wrap([\n    new Twitter({ screenName: 'loebot', bearerToken: 'AAAAAAAAAAAAAAAAAAAAAHJT...', chainInfo })\n  ], { chainInfo })\n\n  for await (const res of c.watch()) {\n    console.log(res)\n  }\n}\n\nmain()\n```\n\n### Running the examples\n\nAdd `credentials.json` to the `examples/` directory like:\n\n```json\n{\n  \"bearerToken\": \"AAAAAAAAAAAAAAAAAAAAAHJT...\"\n}\n```\n\nRun a client that watches for randomness and prints it to the console:\n\n```sh\nnode ./examples/node.js\n# or\ndeno run --allow-net --allow-read ./examples/deno.js\n```\n\n## API\n\n```js\nimport Twitter from '@alanshaw/drand-client-twitter'\n```\n\nSee the drand client [API Reference docs](https://github.com/drand/drand-client#api).\n\n### `new Twitter(config)`\n\nCreate a new drand Twitter client.\n\n* `config.screenName` - screen name of the twitter user that is relaying randomness (required).\n* `config.bearerToken` - access token for using the Twitter API (required).\n* `config.chainInfo` - information about the chain of randomness that is being relayed, for beacon verification (required).\n\nOptional configuration:\n\n* `config.latestRoundDelay` - expected delay in ms between randomness being generated and it being available on twitter, reduce this for faster latest randomness but more requests to twitter (default `650`ms).\n* `config.latestRoundRetries` - maximum retries for getting the latest round before it fails (default `5`).\n* `config.latestRoundRetryBackoff` - backoff interval in ms between retries - doubled each retry (default `50`).\n\n## Contribute\n\nFeel free to dive in! [Open an issue](https://github.com/alanshaw/drand-client-twitter/issues/new) or submit PRs.\n\n## License\n\n[MIT](LICENSE) © Alan Shaw\n","readmeFilename":"README.md"}