import { assert } from "@std/assert";
import { TempDir } from "./helpers/temp.ts";
import { initSettingsFile, applyP2pSettings, applyP2pTestTweaks } from "./helpers/settings.ts";
import { startCliInBackground } from "./helpers/backgroundCli.ts";
import { discoverPeer, maybeStartLocalRelay, stopLocalRelayIfStarted } from "./helpers/p2p.ts";

Deno.test("p2p-peers: discovers host through local relay", async () => {
    const relay = Deno.env.get("RELAY") ?? "ws://localhost:4000/";
    const roomId = Deno.env.get("ROOM_ID") ?? `room-${Date.now()}`;
    const passphrase = Deno.env.get("PASSPHRASE") ?? "test";
    const timeoutSeconds = Number(Deno.env.get("TIMEOUT_SECONDS") ?? "8");

    await using workDir = await TempDir.create("livesync-cli-p2p-peers-local-relay");
    const hostVault = workDir.join("vault-host");
    const hostSettings = workDir.join("settings-host.json");
    const clientVault = workDir.join("vault");
    const clientSettings = workDir.join("settings.json");
    await Deno.mkdir(hostVault, { recursive: true });
    await Deno.mkdir(clientVault, { recursive: true });

    const relayStarted = await maybeStartLocalRelay(relay);
    try {
        await initSettingsFile(hostSettings);
        await initSettingsFile(clientSettings);
        await applyP2pSettings(hostSettings, roomId, passphrase, "self-hosted-livesync-cli-tests", relay);
        await applyP2pSettings(clientSettings, roomId, passphrase, "self-hosted-livesync-cli-tests", relay);
        await applyP2pTestTweaks(hostSettings, "p2p-host", passphrase);
        await applyP2pTestTweaks(clientSettings, "p2p-client", passphrase);

        const host = startCliInBackground(hostVault, "--settings", hostSettings, "p2p-host");
        try {
            await host.waitUntilContains("P2P host is running", 20000);
            const peer = await discoverPeer(clientVault, clientSettings, timeoutSeconds);
            assert(peer.id.length > 0);
            assert(peer.name.length > 0);
        } finally {
            await host.stop();
        }
    } finally {
        await stopLocalRelayIfStarted(relayStarted);
    }
});