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import { useEffect, useMemo, useState, useCallback } from 'react';
import { CircularProgress, LinearProgress, Typography } from '@mui/material';
import { useApolloClient } from '@apollo/client';
import {
useStream,
DataLoadFailed,
useWidgetRefreshRate
} from '@ska-octopus-widget-sdk/widget-sdk';
import { DATA_PIPELINE_STREAM_SUB, TRIGGER_DATA_PIPELINE_QUERY } from './graphql/pipeline';
import SunburstWidget, { SunburstData } from './SunburstWidget';
import styles from './DataPipelineWidget.module.css';
/* ---------- local types ----------------------------------------- */
interface Project {
name: string;
last_activity_at: string;
pipeline_status: string;
}
interface StreamMsg {
processed: number;
total: number;
project?: Project;
}
/* ---------- helpers --------------------------------------------- */
const norm = (s: string) => String(s).trim().toLowerCase().replace(/\s+/g, '_');
function buildSunburst(projects: Project[]): SunburstData {
const rootLabel = 'Data Pipeline';
const ids: string[] = ['root'];
const labels: string[] = [rootLabel];
const parents: string[] = [''];
const values: number[] = [projects.length];
// Count projects by status and keep per‑status project lists
const buckets = new Map<string, { label: string; projects: Project[] }>();
for (const p of projects) {
const key = norm(p.pipeline_status);
const entry = buckets.get(key) ?? { label: p.pipeline_status, projects: [] };
entry.projects.push(p);
buckets.set(key, entry);
}
// Add status nodes
for (const [key, entry] of buckets.entries()) {
const stateId = `state:${key}`;
ids.push(stateId);
labels.push(entry.label);
parents.push('root');
values.push(entry.projects.length);
// Add project leaves
for (const prj of entry.projects) {
const leafId = `project:${norm(prj.name)}@${stateId}`;
ids.push(leafId);
labels.push(prj.name);
parents.push(stateId);
values.push(1);
}
}
return { ids, labels, parents, values };
}
export interface DataPipelineWidgetProps {
instanceId?: string;
}
/* ---------- component ------------------------------------------- */
export default function DataPipelineWidget({ instanceId }: DataPipelineWidgetProps) {
/* one channel per widget instance (stable) */
const channel = useMemo(() => `DPP_${Math.random().toString(36).slice(2)}`, []);
const refresh = useWidgetRefreshRate(instanceId ?? 'dataPipeline');
const apollo = useApolloClient();
/* local state ------------------------------------------------- */
const [projects, setProjects] = useState<Project[]>([]);
const [processed, setProcessed] = useState(0);
const [total, setTotal] = useState(0);
/* helper: (re)trigger the backend job ------------------------- */
const callTrigger = useCallback(async () => {
setProjects([]);
setProcessed(0);
setTotal(0);
try {
const { data } = await apollo.query<{
dataPipeline: Project[];
}>({
query: TRIGGER_DATA_PIPELINE_QUERY,
variables: { progressChannel: channel },
fetchPolicy: 'network-only'
});
// Fast path: backend replied with the full list synchronously
Eif (Array.isArray(data?.dataPipeline)) {
setProjects(data.dataPipeline);
setProcessed(data.dataPipeline.length);
setTotal(data.dataPipeline.length);
}
} catch {
/* the stream will surface any meaningful backend errors */
}
}, [apollo, channel]);
/* first trigger + periodic retrigger -------------------------- */
useEffect(() => {
callTrigger(); // initial
if (refresh && refresh > 0) {
const id = window.setInterval(callTrigger, refresh * 1000);
return () => clearInterval(id);
}
}, [callTrigger, refresh]);
/* subscription – generic JSON payloads from pubsub ------------ */
const streamVariables = useMemo(() => ({ channel }), [channel]);
const mapFn = useCallback((d: any) => d.pubsub as StreamMsg, []);
const {
data: msg,
status: streamStatus,
error: streamError,
retry: retryStream
} = useStream<StreamMsg, { channel: string }>({
document: DATA_PIPELINE_STREAM_SUB,
variables: streamVariables,
map: mapFn
});
useEffect(() => {
if (!msg) return;
setProcessed(msg.processed);
setTotal(msg.total);
Iif (msg.project) setProjects((p) => [...p, msg.project]);
}, [msg]);
const sunburstData = useMemo(() => buildSunburst(projects), [projects]);
/* ---------- error ------------------------------------------- */
if (streamStatus === 'failed') {
return (
<DataLoadFailed message="Subscription failed" error={streamError} handleRetry={retryStream} />
);
}
/* ---------- UI ---------------------------------------------- */
const stillLoading = processed < total || total === 0;
return (
<div className={styles.container}>
{stillLoading && (
<>
<Typography gutterBottom className={styles.loadingText}>
🔄 Loading data pipeline…
</Typography>
{total > 0 ? (
<>
<LinearProgress
variant="determinate"
value={(processed / total) * 100}
className={styles.linearProgress}
/>
<Typography variant="caption" align="right" className={styles.progressCaption}>
{processed} / {total} projects
</Typography>
</>
) : (
<div className={styles.spinnerWrapper}>
<CircularProgress size={24} />
</div>
)}
</>
)}
<div className={`${styles.content} ${stillLoading ? styles.contentLoading : ''}`}>
<SunburstWidget title="Data Pipeline" data={sunburstData} />
</div>
</div>
);
}
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