/**
 * Network module — community relationship graph viewer.
 *
 * Visualizes CRM data as interactive force-directed graphs.
 * Nodes: people, companies, opportunities. Edges: relationships.
 * Syncs from Twenty CRM via GraphQL API proxy.
 */

import { Hono } from "hono";
import { renderShell } from "../../server/shell";
import { getModuleInfoList } from "../../shared/module";
import type { RSpaceModule } from "../../shared/module";

const routes = new Hono();

const TWENTY_API_URL = process.env.TWENTY_API_URL || "https://rnetwork.online";
const TWENTY_API_TOKEN = process.env.TWENTY_API_TOKEN || "";

// ── GraphQL helper ──
async function twentyQuery(query: string, variables?: Record<string, unknown>) {
	if (!TWENTY_API_TOKEN) return null;
	const res = await fetch(`${TWENTY_API_URL}/api`, {
		method: "POST",
		headers: {
			"Content-Type": "application/json",
			Authorization: `Bearer ${TWENTY_API_TOKEN}`,
		},
		body: JSON.stringify({ query, variables }),
		signal: AbortSignal.timeout(10000),
	});
	if (!res.ok) return null;
	const json = await res.json() as { data?: unknown };
	return json.data ?? null;
}

// ── Cache layer (60s TTL) ──
let graphCache: { data: unknown; ts: number } | null = null;
const CACHE_TTL = 60_000;

// ── API: Health ──
routes.get("/api/health", (c) => {
	return c.json({ ok: true, module: "network", twentyConfigured: !!TWENTY_API_TOKEN });
});

// ── API: Info ──
routes.get("/api/info", (c) => {
	return c.json({
		module: "network",
		description: "Community relationship graph visualization",
		entityTypes: ["person", "company", "opportunity"],
		features: ["force-directed layout", "CRM sync", "real-time collaboration"],
		twentyConfigured: !!TWENTY_API_TOKEN,
	});
});

// ── API: People ──
routes.get("/api/people", async (c) => {
	const data = await twentyQuery(`{
		people(first: 200) {
			edges {
				node {
					id
					name { firstName lastName }
					email { primaryEmail }
					phone { primaryPhoneNumber }
					city
					company { id name { firstName lastName } }
					createdAt
				}
			}
		}
	}`);
	if (!data) return c.json({ people: [], error: TWENTY_API_TOKEN ? "Twenty API error" : "Twenty not configured" });
	const people = ((data as any).people?.edges || []).map((e: any) => e.node);
	c.header("Cache-Control", "public, max-age=60");
	return c.json({ people });
});

// ── API: Companies ──
routes.get("/api/companies", async (c) => {
	const data = await twentyQuery(`{
		companies(first: 200) {
			edges {
				node {
					id
					name
					domainName { primaryLinkUrl }
					employees
					address { addressCity addressCountry }
					createdAt
				}
			}
		}
	}`);
	if (!data) return c.json({ companies: [], error: TWENTY_API_TOKEN ? "Twenty API error" : "Twenty not configured" });
	const companies = ((data as any).companies?.edges || []).map((e: any) => e.node);
	c.header("Cache-Control", "public, max-age=60");
	return c.json({ companies });
});

// ── API: Graph — transform entities to node/edge format ──
routes.get("/api/graph", async (c) => {
	// Check cache
	if (graphCache && Date.now() - graphCache.ts < CACHE_TTL) {
		c.header("Cache-Control", "public, max-age=60");
		return c.json(graphCache.data);
	}

	if (!TWENTY_API_TOKEN) {
		return c.json({
			nodes: [
				{ id: "demo-1", label: "Alice", type: "person", data: {} },
				{ id: "demo-2", label: "Bob", type: "person", data: {} },
				{ id: "demo-3", label: "Acme Corp", type: "company", data: {} },
			],
			edges: [
				{ source: "demo-1", target: "demo-3", type: "works_at" },
				{ source: "demo-2", target: "demo-3", type: "works_at" },
				{ source: "demo-1", target: "demo-2", type: "contact_of" },
			],
			demo: true,
		});
	}

	try {
		const data = await twentyQuery(`{
			people(first: 200) {
				edges {
					node {
						id
						name { firstName lastName }
						email { primaryEmail }
						company { id name { firstName lastName } }
					}
				}
			}
			companies(first: 200) {
				edges {
					node {
						id
						name
						domainName { primaryLinkUrl }
						employees
					}
				}
			}
			opportunities(first: 200) {
				edges {
					node {
						id
						name
						stage
						amount { amountMicros currencyCode }
						company { id name }
						pointOfContact { id name { firstName lastName } }
					}
				}
			}
		}`);

		if (!data) return c.json({ nodes: [], edges: [], error: "Twenty API error" });

		const d = data as any;
		const nodes: Array<{ id: string; label: string; type: string; data: unknown }> = [];
		const edges: Array<{ source: string; target: string; type: string }> = [];
		const nodeIds = new Set<string>();

		// People → nodes
		for (const { node: p } of d.people?.edges || []) {
			const label = [p.name?.firstName, p.name?.lastName].filter(Boolean).join(" ") || "Unknown";
			nodes.push({ id: p.id, label, type: "person", data: { email: p.email?.primaryEmail } });
			nodeIds.add(p.id);

			// Person → Company edge
			if (p.company?.id) {
				edges.push({ source: p.id, target: p.company.id, type: "works_at" });
			}
		}

		// Companies → nodes
		for (const { node: co } of d.companies?.edges || []) {
			nodes.push({ id: co.id, label: co.name || "Unknown", type: "company", data: { domain: co.domainName?.primaryLinkUrl, employees: co.employees } });
			nodeIds.add(co.id);
		}

		// Opportunities → nodes + edges
		for (const { node: opp } of d.opportunities?.edges || []) {
			nodes.push({ id: opp.id, label: opp.name || "Opportunity", type: "opportunity", data: { stage: opp.stage, amount: opp.amount } });
			nodeIds.add(opp.id);

			if (opp.company?.id && nodeIds.has(opp.company.id)) {
				edges.push({ source: opp.id, target: opp.company.id, type: "involves" });
			}
			if (opp.pointOfContact?.id && nodeIds.has(opp.pointOfContact.id)) {
				edges.push({ source: opp.pointOfContact.id, target: opp.id, type: "involved_in" });
			}
		}

		const result = { nodes, edges, demo: false };
		graphCache = { data: result, ts: Date.now() };
		c.header("Cache-Control", "public, max-age=60");
		return c.json(result);
	} catch (e) {
		console.error("[Network] Graph fetch error:", e);
		return c.json({ nodes: [], edges: [], error: "Graph fetch failed" });
	}
});

// ── API: Workspaces ──
routes.get("/api/workspaces", (c) => {
	return c.json([
		{ slug: "demo", name: "Demo Network", nodeCount: 0, edgeCount: 0 },
	]);
});

// ── Page route ──
routes.get("/", (c) => {
	const space = c.req.param("space") || "demo";
	return c.html(renderShell({
		title: `${space} — Network | rSpace`,
		moduleId: "network",
		spaceSlug: space,
		modules: getModuleInfoList(),
		theme: "light",
		styles: `<link rel="stylesheet" href="/modules/network/network.css">`,
		body: `<folk-graph-viewer space="${space}"></folk-graph-viewer>`,
		scripts: `<script type="module" src="/modules/network/folk-graph-viewer.js"></script>`,
	}));
});

export const networkModule: RSpaceModule = {
	id: "network",
	name: "rNetwork",
	icon: "\u{1F310}",
	description: "Community relationship graph visualization with CRM sync",
	routes,
	standaloneDomain: "rnetwork.online",
};