/**
 * @file Tests server/lib/quota.js: a rollout's `rate_limits`
 * window mapped to the status bar's label/percent/reset, and a window that has
 * reset since Codex last wrote reading as empty, and the Codex login's
 * account + expiry read from `auth.json`; and a saved Claude profile asked
 * with its own token only while it is valid, never refreshed, and never shown
 * with the usage of a token that belongs to a different account; each
 * tool's plan name; the Cursor CLI's login asked of cursor.com only while
 * valid; Antigravity's `agy --print /usage` pools, never on an old agy; and
 * the Grok, Kimi Code and OpenCode Go logins, each sent only to its own host
 * while valid, never refreshed.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

const { test } = require("node:test");
const assert = require("node:assert");
const { codexWindow, windowLabel } = require("../lib/quota");

// No test may read (or send) the machine's real Cursor login.
process.env.XDG_CONFIG_HOME = require("node:fs").mkdtempSync(
  require("node:path").join(require("node:os").tmpdir(), "quota-xdg-")
);
// Nor run the machine's real agy: only the Antigravity test's fake one runs.
process.env.AGENTHUB_AGY_USAGE = "0";
// Nor its real Grok, Kimi or OpenCode logins.
for (const k of ["GROK_HOME", "KIMI_CODE_HOME", "XDG_DATA_HOME"]) {
  process.env[k] = require("node:fs").mkdtempSync(
    require("node:path").join(require("node:os").tmpdir(), "quota-home-")
  );
}

test("windowLabel names the plan windows", () => {
  assert.strictEqual(windowLabel(300), "5h");
  assert.strictEqual(windowLabel(10080), "wk");
  assert.strictEqual(windowLabel(43200), "mo");
  assert.strictEqual(windowLabel(2880), "2d");
});

test("codexWindow keeps a live window and empties a reset one", () => {
  const future = Math.floor(Date.now() / 1000) + 3600;
  assert.deepStrictEqual(
    codexWindow({ used_percent: 27, window_minutes: 300, resets_at: future }, Date.now()),
    { label: "5h", usedPercent: 27, resetsAt: new Date(future * 1000).toISOString() }
  );
  const past = codexWindow(
    { used_percent: 92, window_minutes: 10080, resets_in_seconds: 60 },
    Date.now() - 120_000
  );
  assert.strictEqual(past.usedPercent, 0);
  assert.strictEqual(codexWindow(null, 0), null);
});

test("codexAccount reads the email and access-token expiry, never a token", () => {
  const fs = require("node:fs");
  const os = require("node:os");
  const path = require("node:path");
  const { codexAccount } = require("../lib/quota");
  const jwt = (claims) => `h.${Buffer.from(JSON.stringify(claims)).toString("base64url")}.s`;
  const home = fs.mkdtempSync(path.join(os.tmpdir(), "quota-codex-"));
  const prev = process.env.CODEX_HOME;
  process.env.CODEX_HOME = home;
  try {
    assert.deepStrictEqual(codexAccount(), {});
    fs.writeFileSync(
      path.join(home, "auth.json"),
      JSON.stringify({
        tokens: {
          id_token: jwt({
            email: "a@b.c",
            "https://api.openai.com/auth": { chatgpt_plan_type: "plus" },
          }),
          access_token: jwt({ exp: 1_800_000_000 }),
        },
      })
    );
    assert.deepStrictEqual(codexAccount(), {
      account: "a@b.c",
      plan: "plus",
      expiresAt: new Date(1_800_000_000_000).toISOString(),
    });
  } finally {
    if (prev === undefined) delete process.env.CODEX_HOME;
    else process.env.CODEX_HOME = prev;
    fs.rmSync(home, { recursive: true, force: true });
  }
});

test("a saved profile is asked with its own token only while valid, never refreshed", async () => {
  const fs = require("node:fs");
  const os = require("node:os");
  const path = require("node:path");
  const { quotas, __resetCache } = require("../lib/quota");
  const home = fs.mkdtempSync(path.join(os.tmpdir(), "quota-claude-"));
  const dir = path.join(home, "agenthub-profiles");
  fs.mkdirSync(dir);
  const profile = (name, token, expiresAt) =>
    fs.writeFileSync(
      path.join(dir, `${name}.json`),
      JSON.stringify({
        label: name,
        account: { accountUuid: name, emailAddress: `${name}@x.y` },
        credentials: { accessToken: token, refreshToken: "r", expiresAt },
      })
    );
  profile("fresh", "tok-fresh", Date.now() + 3600_000);
  profile("stale", "tok-stale", Date.now() - 1000);
  const prev = { home: process.env.CLAUDE_HOME, fetch: global.fetch };
  const asked = [];
  process.env.CLAUDE_HOME = home;
  global.fetch = async (url, opts) => {
    if (url.endsWith("/profile")) {
      // The fresh profile's token is its own account's.
      return { ok: true, json: async () => ({ account: { uuid: "fresh" } }) };
    }
    asked.push(`${url} ${opts.headers.Authorization}`);
    return {
      status: 200,
      ok: true,
      json: async () => ({ five_hour: { utilization: 40, resets_at: null } }),
    };
  };
  try {
    __resetCache();
    const claude = (await quotas()).tools.filter((t) => t.id === "claude");
    assert.deepStrictEqual(asked, ["https://api.anthropic.com/api/oauth/usage Bearer tok-fresh"]);
    const by = Object.fromEntries(claude.map((t) => [t.label, t]));
    assert.strictEqual(by.fresh.active, false);
    assert.strictEqual(by.fresh.windows[0].usedPercent, 40);
    assert.strictEqual(by.stale.error, "EPROFILEEXPIRED");
    assert.strictEqual(by.stale.account, "stale@x.y");
  } finally {
    if (prev.home === undefined) delete process.env.CLAUDE_HOME;
    else process.env.CLAUDE_HOME = prev.home;
    global.fetch = prev.fetch;
    __resetCache();
    fs.rmSync(home, { recursive: true, force: true });
  }
});

test("a profile holding another account's token shows EWRONGACCOUNT, not that account's usage", async () => {
  const fs = require("node:fs");
  const os = require("node:os");
  const path = require("node:path");
  const { quotas, __resetCache } = require("../lib/quota");
  const home = fs.mkdtempSync(path.join(os.tmpdir(), "quota-owner-"));
  const dir = path.join(home, "agenthub-profiles");
  fs.mkdirSync(dir);
  fs.writeFileSync(
    path.join(dir, "victor.json"),
    JSON.stringify({
      label: "Victor",
      account: { accountUuid: "victor", emailAddress: "victor@x.y" },
      credentials: { accessToken: "tok", refreshToken: "r", expiresAt: Date.now() + 3600_000 },
    })
  );
  const prev = { home: process.env.CLAUDE_HOME, fetch: global.fetch };
  process.env.CLAUDE_HOME = home;
  global.fetch = async (url) => ({
    status: 200,
    ok: true,
    json: async () =>
      url.endsWith("/profile")
        ? { account: { uuid: "thang" } }
        : { five_hour: { utilization: 30, resets_at: null } },
  });
  try {
    __resetCache();
    const [victor] = (await quotas()).tools.filter((t) => t.id === "claude");
    assert.strictEqual(victor.label, "Victor");
    assert.strictEqual(victor.error, "EWRONGACCOUNT");
    assert.deepStrictEqual(victor.windows, []);
  } finally {
    if (prev.home === undefined) delete process.env.CLAUDE_HOME;
    else process.env.CLAUDE_HOME = prev.home;
    global.fetch = prev.fetch;
    __resetCache();
    fs.rmSync(home, { recursive: true, force: true });
  }
});

test("the live row is the account its token belongs to, not the one .claude.json names", async () => {
  const fs = require("node:fs");
  const os = require("node:os");
  const path = require("node:path");
  const { quotas, __resetCache } = require("../lib/quota");
  const root = fs.mkdtempSync(path.join(os.tmpdir(), "quota-live-"));
  const home = path.join(root, ".claude");
  const dir = path.join(home, "agenthub-profiles");
  fs.mkdirSync(dir, { recursive: true });
  const save = (name, label, uuid) =>
    fs.writeFileSync(
      path.join(dir, `${name}.json`),
      JSON.stringify({
        label,
        account: { accountUuid: uuid, emailAddress: `${name}@x.y` },
        credentials: { accessToken: `tok-${name}`, refreshToken: "r", expiresAt: 1 },
      })
    );
  save("thang", "Thắng", "uuid-t");
  save("victor", "Victor", "uuid-v");
  // Thắng's identity, Victor's token.
  fs.writeFileSync(
    path.join(home, ".credentials.json"),
    JSON.stringify({
      claudeAiOauth: {
        accessToken: "live-v",
        expiresAt: Date.now() + 3600_000,
        subscriptionType: "max",
      },
    })
  );
  fs.writeFileSync(
    `${home}.json`,
    JSON.stringify({ oauthAccount: { accountUuid: "uuid-t", emailAddress: "thang@x.y" } })
  );
  const prev = { home: process.env.CLAUDE_HOME, fetch: global.fetch };
  process.env.CLAUDE_HOME = home;
  global.fetch = async (url) => ({
    status: 200,
    ok: true,
    json: async () =>
      url.endsWith("/profile")
        ? { account: { uuid: "uuid-v", email: "victor@x.y" } }
        : { five_hour: { utilization: 82, resets_at: null } },
  });
  try {
    __resetCache();
    const claude = (await quotas()).tools.filter((t) => t.id === "claude");
    const live = claude.find((t) => t.active);
    assert.strictEqual(live.label, "Victor");
    assert.strictEqual(live.account, "victor@x.y");
    assert.strictEqual(live.ownerUuid, undefined);
    assert.strictEqual(live.plan, "max");
    assert.deepStrictEqual(
      claude.filter((t) => !t.active).map((t) => t.label),
      ["Thắng"]
    );
  } finally {
    if (prev.home === undefined) delete process.env.CLAUDE_HOME;
    else process.env.CLAUDE_HOME = prev.home;
    global.fetch = prev.fetch;
    __resetCache();
    fs.rmSync(root, { recursive: true, force: true });
  }
});

test("Cursor: the CLI's own login asks cursor.com for its plan + cycle usage, never past expiry", async () => {
  const fs = require("node:fs");
  const os = require("node:os");
  const path = require("node:path");
  const { quotas, __resetCache } = require("../lib/quota");
  const jwt = (claims) => `h.${Buffer.from(JSON.stringify(claims)).toString("base64url")}.s`;
  const root = fs.mkdtempSync(path.join(os.tmpdir(), "quota-cursor-"));
  const auth = path.join(root, "config", "cursor", "auth.json");
  fs.mkdirSync(path.dirname(auth), { recursive: true });
  fs.mkdirSync(path.join(root, "cursor"));
  fs.writeFileSync(
    path.join(root, "cursor", "cli-config.json"),
    JSON.stringify({ authInfo: { email: "c@d.e", authId: "auth0|user_1" } })
  );
  const prev = {
    xdg: process.env.XDG_CONFIG_HOME,
    dir: process.env.AGENTHUB_CURSOR_DIR,
    fetch: global.fetch,
  };
  process.env.XDG_CONFIG_HOME = path.join(root, "config");
  process.env.AGENTHUB_CURSOR_DIR = path.join(root, "cursor");
  const asked = [];
  global.fetch = async (url, opts) => {
    if (!url.includes("cursor.com")) return { ok: false, status: 401, json: async () => ({}) };
    asked.push(`${url} ${opts.headers.Cookie}`);
    return {
      ok: true,
      status: 200,
      json: async () => ({
        billingCycleEnd: "2099-01-01T00:00:00.000Z",
        membershipType: "pro",
        individualUsage: { plan: { totalPercentUsed: 9.5 } },
      }),
    };
  };
  const cursor = async () => (await quotas()).tools.find((t) => t.id === "cursor");
  try {
    __resetCache();
    assert.strictEqual(await cursor(), undefined); // not logged in: no row
    const token = jwt({ sub: "auth0|user_1", exp: Math.floor(Date.now() / 1000) + 3600 });
    fs.writeFileSync(auth, JSON.stringify({ accessToken: token, refreshToken: "r" }));
    __resetCache();
    assert.deepStrictEqual(await cursor(), {
      id: "cursor",
      active: true,
      account: "c@d.e",
      plan: "pro",
      expiresAt: new Date(
        JSON.parse(Buffer.from(token.split(".")[1], "base64url")).exp * 1000
      ).toISOString(),
      windows: [{ label: "mo", usedPercent: 9.5, resetsAt: "2099-01-01T00:00:00.000Z" }],
    });
    assert.deepStrictEqual(asked, [
      `https://cursor.com/api/usage-summary WorkosCursorSessionToken=user_1::${token}`,
    ]);
    fs.writeFileSync(auth, JSON.stringify({ accessToken: jwt({ sub: "auth0|user_1", exp: 1 }) }));
    __resetCache();
    assert.strictEqual((await cursor()).error, "ETOKENEXPIRED");
    assert.strictEqual(asked.length, 1);
  } finally {
    for (const [k, v] of [
      ["XDG_CONFIG_HOME", prev.xdg],
      ["AGENTHUB_CURSOR_DIR", prev.dir],
    ]) {
      if (v === undefined) delete process.env[k];
      else process.env[k] = v;
    }
    global.fetch = prev.fetch;
    __resetCache();
    fs.rmSync(root, { recursive: true, force: true });
  }
});

test("Antigravity: `agy --print /usage` in an empty dir, one row per pool window, never on an old agy", async () => {
  const fs = require("node:fs");
  const os = require("node:os");
  const path = require("node:path");
  const aiTools = require("../lib/ai-tools");
  const { quotas, __resetCache } = require("../lib/quota");
  const bin = fs.mkdtempSync(path.join(os.tmpdir(), "quota-agy-"));
  const log = path.join(bin, "calls");
  const version = path.join(bin, "version");
  fs.writeFileSync(version, "1.2.17");
  const bucket = (id, window, rf) => ({
    id,
    window,
    remaining_fraction: rf,
    reset_time: "2099-01-01T00:00:00Z",
  });
  fs.writeFileSync(
    path.join(bin, "out.json"),
    JSON.stringify({
      status: "SUCCESS",
      num_turns: 0,
      command: {
        name: "usage",
        data: {
          groups: [
            {
              name: "Gemini Models",
              buckets: [bucket("g-w", "weekly", 0.75), bucket("g-5", "5h", 1)],
            },
            { name: "Claude and GPT models", buckets: [bucket("c-5", "5h", 0.5)] },
          ],
        },
      },
    })
  );
  fs.writeFileSync(
    path.join(bin, "agy"),
    `#!/bin/sh\necho "$PWD $*" >> '${log}'\n[ "$1" = --version ] && { cat '${version}'; exit 0; }\ncat '${path.join(bin, "out.json")}'\n`,
    { mode: 0o755 }
  );
  const prevPath = process.env.PATH;
  process.env.PATH = `${bin}:${prevPath}`;
  delete process.env.AGENTHUB_AGY_USAGE;
  const agy = async () => (await quotas()).tools.find((t) => t.id === "antigravity");
  try {
    aiTools.refresh();
    __resetCache();
    const row = await agy();
    assert.strictEqual(row.active, true);
    assert.deepStrictEqual(row.windows, [
      { group: "Gemini Models", label: "5h", usedPercent: 0, resetsAt: "2099-01-01T00:00:00.000Z" },
      {
        group: "Gemini Models",
        label: "wk",
        usedPercent: 25,
        resetsAt: "2099-01-01T00:00:00.000Z",
      },
      {
        group: "Claude and GPT models",
        label: "5h",
        usedPercent: 50,
        resetsAt: "2099-01-01T00:00:00.000Z",
      },
    ]);
    const calls = fs.readFileSync(log, "utf8").trim().split("\n");
    assert.strictEqual(calls[0].split(" ").slice(1).join(" "), "--version");
    const [cwd, ...args] = calls[1].split(" ");
    assert.deepStrictEqual(args, ["--print", "/usage", "--output-format", "json"]);
    assert.notStrictEqual(cwd, process.cwd());
    assert.strictEqual(fs.existsSync(cwd), false); // the private dir is gone again
    // An agy older than 1.1.11 may bill /usage as a model request: never asked.
    fs.writeFileSync(version, "1.1.10");
    fs.writeFileSync(log, "");
    __resetCache();
    assert.strictEqual(await agy(), undefined);
    assert.match(fs.readFileSync(log, "utf8"), /^\S+ --version\n$/);
  } finally {
    process.env.PATH = prevPath;
    process.env.AGENTHUB_AGY_USAGE = "0";
    aiTools.refresh();
    __resetCache();
    fs.rmSync(bin, { recursive: true, force: true });
  }
});

/** A fetch stub answering per host, recording every `url auth` it was asked. */
function stubFetch(answers) {
  const asked = [];
  const prev = global.fetch;
  global.fetch = async (url, opts = {}) => {
    asked.push(`${url} ${opts.headers?.Authorization || ""}`.trim());
    const hit = Object.entries(answers).find(([k]) => url.startsWith(k));
    if (!hit) return { ok: false, status: 404, json: async () => ({}) };
    const [status, body] = hit[1];
    return { ok: status < 300, status, json: async () => body };
  };
  return { asked, restore: () => (global.fetch = prev) };
}

test("Grok: the CLI's own auth.x.ai session asks cli-chat-proxy for credits + plan, never past expiry", async () => {
  const fs = require("node:fs");
  const path = require("node:path");
  const { quotas, __resetCache } = require("../lib/quota");
  const auth = path.join(process.env.GROK_HOME, "auth.json");
  const f = stubFetch({
    "https://cli-chat-proxy.grok.com/v1/billing?format=credits": [
      200,
      {
        config: {
          creditUsagePercent: 12,
          currentPeriod: { end: "2099-01-08T00:00:00Z" },
          subscriptionTier: "SuperGrok",
          monthlyLimit: { val: "200" },
          used: { val: "50" },
          billingPeriodEnd: "2099-02-01T00:00:00Z",
        },
      },
    ],
  });
  const grok = async () => (await quotas()).tools.find((t) => t.id === "grok");
  try {
    __resetCache();
    assert.strictEqual(await grok(), undefined);
    const later = new Date(Date.now() + 3600_000).toISOString();
    fs.writeFileSync(
      auth,
      JSON.stringify({
        "https://other.example": { key: "tok-other", expires_at: later },
        "https://auth.x.ai": { key: "tok-x", user_id: "u1", email: "g@x.ai", expires_at: later },
      })
    );
    __resetCache();
    assert.deepStrictEqual(await grok(), {
      id: "grok",
      active: true,
      account: "g@x.ai",
      plan: "SuperGrok",
      expiresAt: later,
      windows: [
        { label: "wk", usedPercent: 12, resetsAt: "2099-01-08T00:00:00.000Z" },
        { label: "mo", usedPercent: 25, resetsAt: "2099-02-01T00:00:00.000Z" },
      ],
    });
    assert.deepStrictEqual(
      f.asked.filter((a) => a.includes("grok.com")),
      ["https://cli-chat-proxy.grok.com/v1/billing?format=credits Bearer tok-x"]
    );
    fs.writeFileSync(
      auth,
      JSON.stringify({ "https://auth.x.ai": { key: "tok-x", expires_at: "2000-01-01T00:00:00Z" } })
    );
    __resetCache();
    assert.strictEqual((await grok()).error, "ETOKENEXPIRED");
    assert.strictEqual(f.asked.filter((a) => a.includes("grok.com")).length, 1);
  } finally {
    f.restore();
    fs.rmSync(auth, { force: true });
    __resetCache();
  }
});

test("Kimi Code: the CLI's own token asks api.kimi.com/coding for 5h, week and month", async () => {
  const fs = require("node:fs");
  const path = require("node:path");
  const { quotas, __resetCache } = require("../lib/quota");
  const dir = path.join(process.env.KIMI_CODE_HOME, "credentials");
  fs.mkdirSync(dir, { recursive: true });
  const file = path.join(dir, "kimi-code.json");
  const f = stubFetch({
    "https://api.kimi.com/coding/v1/usages": [
      200,
      {
        usages: {
          limit_5h: { used_ratio: 0.3, reset_time: "2099-01-01T05:00:00Z" },
          limit_7d: { used_ratio: "0.2", reset_time: "2099-01-07T00:00:00Z" },
          limit_month_total: { used_ratio: 0.4, reset_time: "2099-02-01T00:00:00Z" },
          limit_month_code: { used_ratio: 0.25, reset_time: "2099-02-01T00:00:00Z" },
        },
      },
    ],
  });
  const kimi = async () => (await quotas()).tools.find((t) => t.id === "kimi");
  try {
    __resetCache();
    assert.strictEqual(await kimi(), undefined);
    const exp = Math.floor(Date.now() / 1000) + 600;
    fs.writeFileSync(
      file,
      JSON.stringify({ access_token: "tok-k", refresh_token: "r", expires_at: exp })
    );
    __resetCache();
    const row = await kimi();
    assert.strictEqual(row.expiresAt, new Date(exp * 1000).toISOString());
    assert.deepStrictEqual(
      row.windows.map((w) => [w.label, Math.round(w.usedPercent)]),
      [
        ["5h", 30],
        ["wk", 20],
        ["mo", 40],
      ]
    );
    assert.deepStrictEqual(
      f.asked.filter((a) => a.includes("kimi")),
      ["https://api.kimi.com/coding/v1/usages Bearer tok-k"]
    );
    fs.writeFileSync(file, JSON.stringify({ access_token: "tok-k", expires_at: 1 }));
    __resetCache();
    assert.strictEqual((await kimi()).error, "ETOKENEXPIRED");
    assert.strictEqual(f.asked.filter((a) => a.includes("kimi")).length, 1);
  } finally {
    f.restore();
    fs.rmSync(file, { force: true });
    __resetCache();
  }
});

test("OpenCode Go: opencode's own `opencode-go` key asks opencode.ai for its meters", async () => {
  const fs = require("node:fs");
  const path = require("node:path");
  const { quotas, __resetCache } = require("../lib/quota");
  const dir = path.join(process.env.XDG_DATA_HOME, "opencode");
  fs.mkdirSync(dir, { recursive: true });
  const file = path.join(dir, "auth.json");
  const f = stubFetch({
    "https://opencode.ai/zen/go/v1/usage": [
      200,
      {
        usage: {
          rolling: { percent: 10, resetsAt: "2099-01-01T05:00:00Z" },
          weekly: { percent: 55.5, resetsAt: "2099-01-07T00:00:00Z" },
        },
      },
    ],
  });
  const go = async () => (await quotas()).tools.find((t) => t.id === "opencode");
  try {
    __resetCache();
    // A login with no Go key (Copilot through opencode, say) is no row.
    fs.writeFileSync(file, JSON.stringify({ "github-copilot": { type: "oauth", access: "a" } }));
    assert.strictEqual(await go(), undefined);
    fs.writeFileSync(
      file,
      JSON.stringify({
        "opencode-go": { type: "api", key: "sk-go" },
        other: { type: "api", key: "x" },
      })
    );
    __resetCache();
    assert.deepStrictEqual(await go(), {
      id: "opencode",
      active: true,
      plan: "Go",
      windows: [
        { label: "5h", usedPercent: 10, resetsAt: "2099-01-01T05:00:00.000Z" },
        { label: "wk", usedPercent: 55.5, resetsAt: "2099-01-07T00:00:00.000Z" },
      ],
    });
    assert.deepStrictEqual(
      f.asked.filter((a) => a.includes("opencode")),
      ["https://opencode.ai/zen/go/v1/usage Bearer sk-go"]
    );
  } finally {
    f.restore();
    fs.rmSync(file, { force: true });
    __resetCache();
  }
});