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Background,
Controls,
Handle,
MarkerType,
Position,
ReactFlow,
useEdgesState,
useNodesState,
type Connection,
type Edge,
type NodeProps,
} from '@xyflow/react';
import { createContext, useCallback, useContext, useEffect, useMemo, useState } from 'react';
import { connectionToEdge, fromFlow, newNode, nodeSummary, toFlow, type FlowNode } from './flow';
import { isTrigger, validateGraph } from './graph';
import type { Client, EditorData, NodeTypeInfo, ParamInfo, SaveProblem } from './types';
interface Labels {
types: Map<string, NodeTypeInfo>;
strings: Record<string, string>;
marked: Set<string>;
}
const LabelsContext = createContext<Labels>({ types: new Map(), strings: {}, marked: new Set() });
/** A node on the canvas: its label, an input handle unless it is a trigger, and one output per branch. */
function NodeView({ id, data, selected }: NodeProps<FlowNode>) {
const { types, strings, marked } = useContext(LabelsContext);
const info = types.get(data.nodetype);
const branches = info?.branches ?? [];
const classes = ['tool_autoflow-node', selected ? 'is-selected' : '', marked.has(id) ? 'has-problem' : ''];
const summary = nodeSummary(info, data.params) || data.nodetype;
return (
<div data-testid={`node-${id}`} className={classes.filter(Boolean).join(' ')}>
{!isTrigger(data.nodetype) && <Handle type="target" position={Position.Top} />}
<div className="tool_autoflow-node-label">{info?.label ?? data.nodetype}</div>
<div className="tool_autoflow-node-type" title={summary}>{summary}</div>
{branches.length === 0 ? (
<Handle type="source" position={Position.Bottom} />
) : (
<div className="tool_autoflow-branches">
{branches.map((b) => (
<div key={b} className="tool_autoflow-branch">
<span>{strings[`branch:${b}`] ?? b}</span>
<Handle type="source" id={b} position={Position.Bottom} />
</div>
))}
</div>
)}
</div>
);
}
const nodeTypes = { autoflow: NodeView };
const isObject = (v: unknown): v is Record<string, unknown> => typeof v === 'object' && v !== null && !Array.isArray(v);
/**
* Function arguments: a JSON object. It is stored as an object once the text parses, so
* placeholders are filled value by value on the server. Until then the text is kept as is.
*/
function JsonField({ id, value, onChange, invalid, required }: {
id: string; value: unknown; onChange: (v: unknown) => void; invalid: string; required: boolean;
}) {
const [text, setText] = useState(isObject(value) ? JSON.stringify(value, null, 2) : String(value ?? ''));
let parsed: unknown;
try {
parsed = JSON.parse(text);
} catch {
parsed = undefined;
}
const valid = text.trim() === '' || isObject(parsed);
return (
<>
<textarea id={id} className="form-control font-monospace" rows={6} value={text} required={required}
onChange={(e) => {
setText(e.target.value);
let next: unknown = e.target.value;
try {
const candidate = JSON.parse(e.target.value);
next = isObject(candidate) ? candidate : e.target.value;
} catch {
// Keep the text until it is a JSON object.
}
onChange(next);
}} />
{!valid && <div className="form-text text-danger">{invalid}</div>}
</>
);
}
function ParamField({ param, value, onChange, strings }: {
param: ParamInfo; value: unknown; onChange: (v: unknown) => void; strings: Record<string, string>;
}) {
const id = `tool_autoflow-param-${param.name}`;
const text = value === undefined || value === null ? '' : String(value);
let input;
if (param.kind === 'json') {
input = <JsonField id={id} value={value} onChange={onChange} invalid={strings.invalidjson} required={param.required} />;
} else if (param.kind === 'textarea') {
input = <textarea id={id} className="form-control" rows={4} value={text} required={param.required} onChange={(e) => onChange(e.target.value)} />;
} else if (param.kind === 'select') {
input = (
<select id={id} className="form-select" value={text} required={param.required} onChange={(e) => onChange(e.target.value)}>
<option value="">{strings.choose}</option>
{param.options.map((o) => (
<option key={o} value={o}>{param.optionlabels[o] ?? o}</option>
))}
</select>
);
} else {
const lists: Record<string, string> = { event: 'tool_autoflow-events', function: 'tool_autoflow-functions' };
const list = lists[param.kind];
input = <input id={id} className="form-control" list={list} value={text} required={param.required}
onChange={(e) => onChange(e.target.value)} />;
}
return (
<div className="mb-2">
<label htmlFor={id} className={param.required ? 'form-label is-required' : 'form-label'}>{param.label}</label>
{input}
</div>
);
}
export interface AppProps {
client: Client;
workflowid: number;
}
/** The workflow editor: toolbar, palette, canvas, node settings and problems. */
export function App({ client, workflowid }: AppProps) {
const [data, setData] = useState<EditorData | null>(null);
const [loadError, setLoadError] = useState<string | null>(null);
const [nodes, setNodes, onNodesChange] = useNodesState<FlowNode>([]);
const [edges, setEdges, onEdgesChange] = useEdgesState<Edge>([]);
const [selected, setSelected] = useState<string | null>(null);
const [id, setId] = useState(workflowid);
const [name, setName] = useState('');
const [enabled, setEnabled] = useState(false);
const [runas, setRunas] = useState('');
const [runasname, setRunasname] = useState('');
const [status, setStatus] = useState('');
const [problems, setProblems] = useState<SaveProblem[]>([]);
useEffect(() => {
client.load(workflowid).then(
(loaded) => {
const flow = toFlow(loaded.graph);
setNodes(flow.nodes);
setEdges(flow.edges);
setName(loaded.name);
setEnabled(loaded.enabled);
setRunas(String(loaded.runasuserid));
setRunasname(loaded.runasname);
setData(loaded);
},
(e: Error) => setLoadError(e.message),
);
}, [client, workflowid, setNodes, setEdges]);
const types = useMemo(() => new Map((data?.nodetypes ?? []).map((t) => [t.type, t])), [data]);
const marked = useMemo(() => new Set(problems.flatMap((p) => p.nodeids)), [problems]);
const onConnect = useCallback((c: Connection) => setEdges((es) => [...es, connectionToEdge(c)]), [setEdges]);
if (loadError !== null) {
return <div role="alert" className="alert alert-danger">{loadError}</div>;
}
if (data === null) {
return <div className="tool_autoflow-loading" aria-busy="true" />;
}
const strings = data.strings;
const graph = fromFlow(nodes, edges);
const clientProblems = validateGraph(graph);
const current = nodes.find((n) => n.id === selected);
const currentType = current ? types.get(current.data.nodetype) : undefined;
const categories = [...new Set(data.nodetypes.map((t) => t.category))];
const add = (type: string) => {
const node = newNode(type, nodes.map((n) => n.id), nodes.length);
setNodes((ns) => [...ns, node]);
setSelected(node.id);
};
const remove = (nodeid: string) => {
setNodes((ns) => ns.filter((n) => n.id !== nodeid));
setEdges((es) => es.filter((e) => e.source !== nodeid && e.target !== nodeid));
setSelected(null);
};
const setParam = (nodeid: string, key: string, value: unknown) =>
setNodes((ns) => ns.map((n) => (n.id === nodeid ? { ...n, data: { ...n.data, params: { ...n.data.params, [key]: value } } } : n)));
const save = async () => {
setStatus(strings.saving);
try {
const runasuserid = data.canchooserunas ? Number(runas) || 0 : 0;
const result = await client.save({ id, name, enabled, graph, runasuserid });
if (id === 0) {
// Keep the new workflow on reload.
window.history.replaceState(null, '', `?id=${result.id}`);
}
setId(result.id);
setEnabled(result.enabled);
setProblems(result.errors);
if (result.runasuserid !== undefined) {
setRunas(String(result.runasuserid));
setRunasname(result.runasname ?? '');
}
setStatus(strings.saved);
} catch (e) {
setStatus(`${strings.savefailed}: ${(e as Error).message}`);
}
};
const run = async () => {
await client.run(id);
setStatus(strings.runqueued);
};
return (
<LabelsContext.Provider value={{ types, strings, marked }}>
<div className="tool_autoflow-editor">
<div className="tool_autoflow-toolbar">
<label htmlFor="tool_autoflow-name" className="visually-hidden sr-only">{strings.workflowname}</label>
<input id="tool_autoflow-name" className="form-control" placeholder={strings.workflowname} value={name}
onChange={(e) => setName(e.target.value)} />
<div className="form-check">
<input id="tool_autoflow-enabled" type="checkbox" className="form-check-input" checked={enabled}
onChange={(e) => setEnabled(e.target.checked)} />
<label htmlFor="tool_autoflow-enabled" className="form-check-label">{strings.enabled}</label>
</div>
{data.canchooserunas && (
<div className="tool_autoflow-runas-field">
<label htmlFor="tool_autoflow-runas" className="visually-hidden sr-only">{strings.runasuserid}</label>
<input id="tool_autoflow-runas" type="number" min="1" className="form-control" value={runas}
placeholder={strings.runasuserid} onChange={(e) => setRunas(e.target.value)} />
</div>
)}
<span className="tool_autoflow-runas text-muted" data-testid="runas">{strings.runsas} {runasname}</span>
<button type="button" className="btn btn-primary" onClick={save}>{strings.save}</button>
<button type="button" className="btn btn-secondary" onClick={run} disabled={id === 0}>{strings.runnow}</button>
<span className="tool_autoflow-status" role="status">{status}</span>
</div>
<div className="tool_autoflow-body">
<section className="tool_autoflow-palette" aria-label={strings.palette}>
{categories.map((category) => (
<div key={category}>
<h4>{strings[`cat:${category}`] ?? category}</h4>
{data.nodetypes.filter((t) => t.category === category).map((t) => (
<button key={t.type} type="button" className="btn btn-outline-secondary btn-sm" title={t.description}
data-testid={`palette-${t.type}`} onClick={() => add(t.type)}>{t.label}</button>
))}
</div>
))}
</section>
<div className="tool_autoflow-canvas">
<ReactFlow nodes={nodes.map((n) => ({ ...n, selected: n.id === selected }))} edges={edges} nodeTypes={nodeTypes}
onNodesChange={onNodesChange} onEdgesChange={onEdgesChange} onConnect={onConnect}
onNodeClick={(_, n) => setSelected(n.id)} onPaneClick={() => setSelected(null)} fitView
defaultEdgeOptions={{ markerEnd: { type: MarkerType.ArrowClosed } }}
fitViewOptions={{ maxZoom: 1 }}>
<Background />
<Controls />
</ReactFlow>
</div>
<aside className="tool_autoflow-inspector" aria-label={strings.nodesettings}>
{current && currentType ? (
<>
<h4>{currentType.label}</h4>
{currentType.params.map((p) => (
<ParamField key={`${current.id}:${p.name}`} param={p} value={current.data.params[p.name]} strings={strings}
onChange={(v) => setParam(current.id, p.name, v)} />
))}
<button type="button" className="btn btn-link text-danger" onClick={() => remove(current.id)}>{strings.deletenode}</button>
</>
) : (
<p>{strings.selectnode}</p>
)}
</aside>
</div>
{(clientProblems.length > 0 || problems.length > 0) && (
<section className="tool_autoflow-problems" aria-label={strings.problems}>
<h4>{strings.problems}</h4>
<ul>
{/* Stryker disable next-line StringLiteral: list keys never change what renders. */}
{problems.map((p) => <li key={`s-${p.code}`}>{p.message}</li>)}
{/* Stryker disable next-line StringLiteral: list keys never change what renders. */}
{clientProblems.map((p) => <li key={`c-${p.code}`}>{strings[`error:${p.code}`] ?? p.code}</li>)}
</ul>
</section>
)}
<datalist id="tool_autoflow-events">
{data.events.map((e) => <option key={e} value={e} />)}
</datalist>
<datalist id="tool_autoflow-functions">
{data.functions.map((f) => <option key={f} value={f} />)}
</datalist>
</div>
</LabelsContext.Provider>
);
}
|