// A fake world for the agents tests (module, XRPC service, web page): the user's PDS (records,
// describeRepo, chat.atirc.* behind atproto-proxy), two bidders with compute offerings (hat-7 bids free, hat-9
// refuses the rfp) whose receipt and reports land after one miss each, and the guest's ssh. No network.
import { createHash } from "node:crypto";

export const T = "com.publicdomainrelay.temp";
export const HAT7 = "did:plc:7q5lnitxv4meizdon5fmhzrq";
export const HAT9 = "did:plc:4vcig7s43z3nyqrnepmcfzqt";
export const ATIRC = "did:web:irc.fedfork.com#atirc";
export const LAUNCH = "com.fedfork.agents.launch";
const ENDPOINT7 = "https://hat7.example";
const ENDPOINT9 = "https://hat9.example";
// A bidder as the requester reaches it: its DID's market service, at its offering's endpoints.
const PEER7 = `${HAT7}#pdr_temp_market`;
const OFFERINGS = { [HAT7]: ENDPOINT7, [HAT9]: ENDPOINT9 };
const hex = (key) => createHash("sha256").update(key).digest("hex").slice(0, 32);
const report = (collection, prefix, key) => `at://${HAT7}/${T}.compute.events.${collection}/${prefix}-payload-${hex(key)}`;

// respond(call) -> { ok: true, output } | { ok: false, error }; calls: every call seen; repo: the user's records.
export function world({ did, handle = "bob.test", shellOutput = "agent unit active\natlibs-agents: started\n", token = "eyJhbGciOi.tok", mint = true } = {}) {
	const repo = new Map();
	const calls = [];
	const misses = new Map();
	let n = 0;
	let released = false;
	const later = (key, value) => {
		const seen = misses.get(key) ?? 0;
		misses.set(key, seen + 1);
		return seen === 0 ? { ok: false, error: "RecordNotFound" } : { ok: true, output: value };
	};
	const keys = [{ type: "ssh-ed25519", publicKey: "ssh-ed25519 AAAA", fingerprint: "SHA256:x" }];
	function answer(call) {
		const { nsid, params = {}, input = {} } = call;
		switch (nsid) {
			case "com.fedfork.exec.attest":
				return { ok: true, output: { key: "did:key:zQ3sh", ...(input.record && { record: { ...input.record, signatures: [{ $type: "network.attested.signature", issuer: did }] } }) } };
			case "com.atproto.repo.describeRepo":
				return { ok: true, output: { did, handle } };
			case "com.atproto.repo.createRecord":
			case "com.atproto.repo.putRecord": {
				const rkey = input.rkey ?? `3mzzaaaaaa${(++n).toString(36).padStart(3, "a")}`;
				const uri = `at://${input.repo}/${input.collection}/${rkey}`;
				repo.set(uri, { uri, cid: `bafy${rkey}`, value: input.record });
				if (input.collection === `${T}.market.event`) released = true;
				return { ok: true, output: { uri, cid: `bafy${rkey}` } };
			}
			case "com.atproto.repo.deleteRecord": {
				const uri = `at://${input.repo}/${input.collection}/${input.rkey}`;
				repo.delete(uri);
				return { ok: true, output: {} };
			}
			case `${T}.market.submitRfp`:
				return call.service === PEER7 ? { ok: true, output: { ok: true, name: "bid-7" } } : { ok: false, error: "submitRfp failed with 503" };
			case `${T}.market.submitEvent`:
				released = true;
				return call.service === PEER7 ? { ok: true, output: { ok: true } } : { ok: false, error: "submitEvent failed with 404" };
			case `${T}.market.submitAccept`:
				return { ok: true, output: { ok: true, id: "accept-1" } };
			case "chat.atirc.mint":
				if (call.proxy !== ATIRC) return { ok: false, error: "mint must go through the PDS to atirc" };
				if (!mint) return { ok: false, error: "403 Forbidden subhandle must be below bob.test" };
				return { ok: true, output: { token, subhandle: input.subhandle, nick: input.subhandle.split(".")[0], handle } };
			case "chat.atirc.revoke":
				if (call.proxy !== ATIRC) return { ok: false, error: "revoke must go through the PDS to atirc" };
				return { ok: true, output: { subhandle: input.subhandle, revokedAt: 1 } };
			case "com.fedfork.exec.iroh.connect":
				return { ok: true, output: { output: shellOutput, exitCode: 0 } };
			case "com.fedfork.exec.webrtc.connect":
				return { ok: true, output: { tag: input.tag, fingerprint: "sha-256 29:D7", output: shellOutput } };
			case "com.atproto.repo.getRecord":
				break;
			default:
				return { ok: false, error: `unexpected ${nsid}` };
		}
		const uri = `at://${params.repo}/${params.collection}/${params.rkey}`;
		if (params.repo === did) return repo.has(uri) ? { ok: true, output: repo.get(uri) } : { ok: false, error: "RecordNotFound" };
		if (params.collection === `${T}.market.offering` && params.rkey === "self" && OFFERINGS[params.repo]) {
			return { ok: true, output: { uri, cid: "bafyoffer", value: { appliesTo: [`${T}.compute.vm`], endpoints: [{ kind: "https", address: OFFERINGS[params.repo] }] } } };
		}
		const find = (collection) => [...repo.values()].find((r) => r.uri.includes(`/${T}.${collection}/`));
		const rfp = find("market.rfp");
		if (uri === `at://${HAT7}/${T}.market.bid/bid-7`) {
			return later(uri, { uri, cid: "bafybid", value: { rfp: { uri: rfp?.uri }, payload: { $type: "com.atproto.repo.strongRef", uri: `at://${HAT7}/${T}.market.bids.free/x` }, submitAccept: ENDPOINT7 } });
		}
		const accept = find("market.accept");
		const receipt = accept && `at://${HAT7}/${T}.market.receipt/receipt-${hex(`${accept.uri}\n${accept.cid}`)}`;
		if (uri === receipt) return later(uri, { uri, cid: "bafyrc", value: { accept: { uri: accept.uri } } });
		const reports = receipt && {
			[report("vm.onNetwork", "onnetwork", `onNetwork:${receipt}`)]: { address: "iroh://endpointaabm6" },
			[report("vm.onNetwork", "onnetwork", `onNetwork:ssh:${receipt}`)]: { address: "sha-256 29:D7", kind: "webrtc", tag: "ssh" },
			[report("vm.hostKeys", "hostkeys", `hostKeys:${receipt}`)]: { keys },
			[report("vm.terminated", "termination", `terminated:${receipt}`)]: { reason: "deleted_on_request" },
		};
		if (reports?.[uri]) {
			if (uri.includes("vm.terminated") && !released) return { ok: false, error: "RecordNotFound" };
			return later(uri, { uri, cid: "c", value: reports[uri] });
		}
		return { ok: false, error: "RecordNotFound" };
	}
	const respond = (call) => {
		calls.push(call);
		return answer(call);
	};
	// The run-module host `call` shape: throws for ok: false.
	const call = async (nsid, request) => {
		const out = respond({ nsid, ...request });
		if (!out.ok) throw new Error(out.error);
		return out.output;
	};
	return { calls, repo, respond, call };
}