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import { useEffect, useState } from "react";
import "./App.css";
import { createDb } from "./duck";
import { Table } from "./table";
import { AsyncDuckDBConnection } from "@duckdb/duckdb-wasm";
const DEFAULT_DATASET_URL =
"https://huggingface.co/datasets/openai/openai_humaneval/resolve/main/openai_humaneval/test-00000-of-00001.parquet";
// https://duckdb.org/docs/api/wasm/query#arrow-table-to-json
// TODO: import the arrow lib and use the correct type
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const arrowResultToJson = (arrowResult: any) => {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
return arrowResult.toArray().map((row: any) => row.toJSON());
};
function App() {
const [loading, setLoading] = useState(false);
const [datasetUrl, setDatasetUrl] = useState("");
const [textField, setTextField] = useState("");
const [db, setDb] = useState<Awaited<ReturnType<typeof createDb>> | null>(
null
);
const [dataset, setDataset] = useState<null>(null);
const [error, setError] = useState<string | null>(null);
useEffect(() => {
const status = {
killed: false,
};
const initDb = async () => {
const db = await createDb();
if (status.killed) {
db.terminate();
return;
}
setDb(db);
};
initDb();
return () => {
status.killed = true;
setDb((db) => {
if (db) {
db.terminate();
}
return null;
});
};
}, []);
useEffect(() => {
if (db && datasetUrl) {
setLoading(true);
setDataset(null);
setError(null);
console.log("Loading", datasetUrl);
const status: { conn: AsyncDuckDBConnection | null; killed: boolean } = {
conn: null,
killed: false,
};
db.connect().then((conn) => {
if (status.killed) {
conn.close();
return;
}
status.conn = conn;
conn
// we get httpfs for free with cors restrictions
// we get parquet downloaded as we load it
// https://duckdb.org/docs/api/wasm/extensions
// https://duckdb.org/docs/api/wasm/data_ingestion#parquet
.query(
`LOAD parquet;LOAD httpfs;SELECT * FROM '${datasetUrl}' LIMIT 10`
)
.then((result) => setDataset(arrowResultToJson(result)))
.catch((err) => {
console.error(err);
setError(err.message);
setDataset(null);
})
.finally(() => {
conn.close();
setLoading(false);
});
});
return () => {
status.killed = true;
if (status.conn) {
console.log("Closing connection");
status.conn.close();
}
};
} else if (db) {
console.log("Resetting db");
db.reset();
}
}, [db, datasetUrl]);
const handleSubmit = (e: React.FormEvent<HTMLFormElement>) => {
e.preventDefault();
setDatasetUrl(textField);
};
return (
<>
<h1>Quack</h1>
<h2>Enter a hugging face dataset url</h2>
<form onSubmit={handleSubmit}>
<input
type="text"
name="textField"
onChange={(e) => setTextField(e.target.value)}
value={textField}
/>
<button type="submit" disabled={!textField || textField === datasetUrl}>
Load
</button>
<button
type="button"
onClick={() => {
setTextField(DEFAULT_DATASET_URL);
setDatasetUrl(DEFAULT_DATASET_URL);
}}
>
Load Default
</button>
<button
type="button"
onClick={() => {
setTextField("");
setDataset(null);
setDatasetUrl("");
}}
>
Clear
</button>
</form>
<div>
<h2>Dataset</h2>
{loading && <p>Loading...</p>}
{error && <p style={{ color: "red" }}>{error}</p>}
{dataset && <Table data={dataset} />}
</div>
</>
);
}
export default App;
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