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import { edcClient, EDC_CONTEXT } from "@/lib/edc";
import { requireAuth, isAuthError } from "@/lib/auth-guard";
import { promises as fs } from "fs";
import path from "path";
export const dynamic = "force-dynamic";
/* ── Helpers ── */
/** Read a field from an EDC object that may be edc:-prefixed or unprefixed */
function f(obj: Record<string, unknown>, field: string): string {
return (obj[field] ?? obj[`edc:${field}`] ?? "") as string;
}
/**
* Approved fictional participants — DID slug → display name.
* Matches the lookup in participants/route.ts and negotiate/page.tsx.
*/
const SLUG_NAMES: Record<string, string> = {
"alpha-klinik": "AlphaKlinik Berlin",
pharmaco: "PharmaCo Research AG",
medreg: "MedReg DE",
lmc: "Limburg Medical Centre",
irs: "Institut de Recherche Santé",
};
function didToName(did: string): string {
const slug = decodeURIComponent(did).split(":").pop()?.toLowerCase() ?? "";
return SLUG_NAMES[slug] || slug || did.slice(0, 16);
}
function assetLabel(id: string): string {
return id.replace(/-/g, " ").replace(/\b\w/g, (c) => c.toUpperCase());
}
/* ── Types ── */
interface Task {
id: string;
type: "negotiation" | "transfer";
participant: string; // human-readable participant name
participantId: string; // UUID context ID
asset: string; // human-readable asset name
assetId: string; // raw asset ID
state: string; // DSP state (REQUESTED, STARTED, FINALIZED, COMPLETED, etc.)
counterParty: string; // human-readable counter-party name
timestamp: number; // last state update
contractId?: string; // contract agreement ID (if available)
transferType?: string; // e.g. HttpData-PULL
edrAvailable?: boolean; // DPS: true when contentDataAddress has an endpoint (transfer STARTED)
}
interface EdcParticipant {
"@id": string;
participantId?: string;
identity?: string;
[key: string]: unknown;
}
/**
* GET /api/tasks — Aggregate all negotiations and transfers across
* all participant contexts into a unified task list.
*
* Aligns with the EDC Data Plane Signaling (DPS) framework:
* - Negotiations follow DSP: REQUESTED → OFFERED → ACCEPTED → AGREED → VERIFIED → FINALIZED
* - Transfers follow DSP: REQUESTED → STARTED → SUSPENDED → COMPLETED
* - EDR availability is checked for STARTED transfers via contentDataAddress
*
* Returns: { tasks: Task[], counts: { total, negotiations, transfers, active } }
*/
export async function GET() {
const auth = await requireAuth();
Iif (isAuthError(auth)) return auth;
try {
// 1. List all participant contexts
const participants = await edcClient.management<EdcParticipant[]>(
"/v5alpha/participants",
);
if (!Array.isArray(participants) || participants.length === 0) {
// No participant contexts in EDC-V — fall through to mock data
throw new Error("No participant contexts in EDC-V");
}
const tasks: Task[] = [];
// 2. For each participant, fetch negotiations + transfers in parallel
// (all participants included — HDABs can have negotiations too)
await Promise.all(
participants.map(async (p) => {
const ctxId = p["@id"];
const did = (p.participantId || p.identity || ctxId) as string;
const pName = didToName(did);
const [negotiations, transfers] = await Promise.all([
edcClient
.management<Record<string, unknown>[]>(
`/v5alpha/participants/${ctxId}/contractnegotiations/request`,
"POST",
{
"@context": [EDC_CONTEXT],
"@type": "QuerySpec",
filterExpression: [],
},
)
.catch(() => []),
edcClient
.management<Record<string, unknown>[]>(
`/v5alpha/participants/${ctxId}/transferprocesses/request`,
"POST",
{
"@context": [EDC_CONTEXT],
"@type": "QuerySpec",
filterExpression: [],
},
)
.catch(() => []),
]);
// Map negotiations → tasks
Eif (Array.isArray(negotiations)) {
for (const n of negotiations) {
const state = f(n, "state");
const assetId = f(n, "assetId");
const counterPartyId = f(n, "counterPartyId");
const ts = (n.stateTimestamp ??
n["edc:stateTimestamp"] ??
0) as number;
tasks.push({
id: n["@id"] as string,
type: "negotiation",
participant: pName,
participantId: ctxId,
asset: assetId ? assetLabel(assetId) : "Unknown Asset",
assetId,
state,
counterParty: counterPartyId ? didToName(counterPartyId) : "—",
timestamp: ts,
contractId: f(n, "contractAgreementId") || undefined,
});
}
}
// Map transfers → tasks (with DPS EDR indicator)
Eif (Array.isArray(transfers)) {
for (const t of transfers) {
const state = f(t, "state");
const assetId = (t.assetId as string) || f(t, "assetId");
const ts = (t.stateTimestamp ??
t["edc:stateTimestamp"] ??
0) as number;
const contractId = f(t, "contractId");
// Resolve counter-party from the transfer's counterPartyAddress or correlationId
const counterPartyAddr = f(t, "counterPartyAddress");
const counterPartyId = f(t, "counterPartyId");
let counterParty = "—";
if (counterPartyId) {
counterParty = didToName(counterPartyId);
I} else if (counterPartyAddr) {
// Extract DID-like slug from DSP address
const match = counterPartyAddr.match(/\/([^/]+)\/dsp/);
if (match) counterParty = match[1];
}
// DPS: Check contentDataAddress for EDR availability
// When the Control Plane signals the Data Plane via DPS /api/control/v1/dataflows,
// the Data Plane writes back an EDR with endpoint + authorization token
const cda = t.contentDataAddress as
| Record<string, unknown>
| undefined;
const edrEndpoint =
cda?.["https://w3id.org/edc/v0.0.1/ns/endpoint"] ??
cda?.["edc:endpoint"] ??
cda?.endpoint;
const edrAvailable =
!!edrEndpoint && state?.toUpperCase() === "STARTED";
tasks.push({
id: t["@id"] as string,
type: "transfer",
participant: pName,
participantId: ctxId,
asset: assetId ? assetLabel(assetId) : "Unknown Asset",
assetId,
state,
counterParty,
timestamp: ts,
contractId: contractId || undefined,
transferType: f(t, "transferType") || "HttpData-PULL",
edrAvailable,
});
}
}
}),
);
// 3. Sort by timestamp descending (newest first)
tasks.sort((a, b) => b.timestamp - a.timestamp);
// 4. Sync tasks to persistent storage (neo4j-proxy → PostgreSQL)
const NEO4J_PROXY = process.env.NEO4J_PROXY_URL ?? "http://localhost:9090";
try {
await fetch(`${NEO4J_PROXY}/tasks/sync`, {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
tasks: tasks.map((t) => ({
id: t.id,
type: t.type,
participant: t.participant,
participant_id: t.participantId,
asset: t.asset,
asset_id: t.assetId,
state: t.state,
counter_party: t.counterParty,
timestamp_ms: t.timestamp,
contract_id: t.contractId ?? null,
transfer_type: t.transferType ?? null,
edr_available: t.edrAvailable ?? false,
})),
}),
signal: AbortSignal.timeout(5000),
});
} catch {
// Sync best-effort — don't fail the request
}
// 5. Compute counts
const active = tasks.filter(
(t) =>
!["FINALIZED", "COMPLETED", "TERMINATED", "ERROR"].includes(
t.state?.toUpperCase() || "",
),
).length;
return NextResponse.json({
tasks,
counts: {
total: tasks.length,
negotiations: tasks.filter((t) => t.type === "negotiation").length,
transfers: tasks.filter((t) => t.type === "transfer").length,
active,
},
});
} catch (err) {
console.error("Failed to aggregate tasks from EDC-V:", err);
// Fall back to persistent task storage (PostgreSQL via neo4j-proxy)
const NEO4J_PROXY = process.env.NEO4J_PROXY_URL ?? "http://localhost:9090";
try {
const fallbackRes = await fetch(`${NEO4J_PROXY}/tasks`, {
signal: AbortSignal.timeout(5000),
});
if (fallbackRes.ok) {
const data = await fallbackRes.json();
return NextResponse.json(data);
}
} catch {
// Both EDC-V and persistent storage unavailable
}
// Fall back to bundled mock data so the UI works offline
try {
const mockPath = path.join(process.cwd(), "public", "mock", "tasks.json");
const raw = await fs.readFile(mockPath, "utf-8");
const mock = JSON.parse(raw);
console.warn("EDC-V offline — serving mock tasks");
return NextResponse.json(mock);
} catch {
// Mock file not available either
}
return NextResponse.json(
{
error: "Failed to aggregate tasks",
tasks: [],
counts: { total: 0, negotiations: 0, transfers: 0, active: 0 },
},
{ status: 502 },
);
}
}
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