/**
 * @file Tests for named Claude Code auth profiles — snapshotting the logged-in
 * account, switching between accounts, and the guards that keep a switch from
 * destroying the only copy of a credential.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

const os = require("node:os");
const path = require("node:path");
const fs = require("node:fs");

const SUITE_ROOT = fs.mkdtempSync(path.join(os.tmpdir(), "agenthub-cc-profiles-"));
process.env.CLAUDE_HOME = path.join(SUITE_ROOT, ".claude");

const { describe, it, beforeEach, after } = require("node:test");
const assert = require("node:assert/strict");

const profiles = require("../lib/cc-profiles");

const HOME = process.env.CLAUDE_HOME;
const CREDS = path.join(HOME, ".credentials.json");
const CONFIG = `${HOME}.json`;

after(() => fs.rmSync(SUITE_ROOT, { recursive: true, force: true }));

/** Put one account on disk the way the `claude` CLI would leave it. */
function login(uuid, email, { mcp = true, extras = {} } = {}) {
  fs.mkdirSync(HOME, { recursive: true });
  fs.writeFileSync(
    CREDS,
    JSON.stringify({
      ...(mcp ? { mcpOAuth: { "some:server": { accessToken: "mcp-token" } } } : {}),
      claudeAiOauth: { accessToken: `at-${uuid}`, refreshToken: `rt-${uuid}`, expiresAt: 111 },
    })
  );
  fs.writeFileSync(
    CONFIG,
    JSON.stringify({
      numStartups: 7,
      projects: { "/tmp/x": { allowedTools: [] } },
      userID: `uid-${uuid}`,
      oauthAccount: { accountUuid: uuid, emailAddress: email, organizationName: "Org" },
      ...extras,
    })
  );
}

beforeEach(() => {
  fs.rmSync(HOME, { recursive: true, force: true });
  fs.rmSync(CONFIG, { force: true });
});

describe("cc-profiles", () => {
  it("reports the live account and no profiles before anything is saved", () => {
    login("uuid-a", "a@example.com");
    const { items, active } = profiles.listProfiles();
    assert.deepEqual(items, []);
    assert.equal(active.email, "a@example.com");
    assert.equal(active.accountUuid, "uuid-a");
  });

  it("saves the current account and marks it active in the list", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    const { items } = profiles.listProfiles();
    assert.equal(items.length, 1);
    assert.equal(items[0].name, "work");
    assert.equal(items[0].email, "a@example.com");
    assert.equal(items[0].active, true);
  });

  it("never exposes token material in the list", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    const json = JSON.stringify(profiles.listProfiles());
    assert.ok(!json.includes("at-uuid-a"), "access token leaked into the list response");
    assert.ok(!json.includes("rt-uuid-a"), "refresh token leaked into the list response");
  });

  it("stores profiles 0600 in a 0700 dir", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    const dir = profiles.profilesDir();
    assert.equal(fs.statSync(dir).mode & 0o777, 0o700);
    assert.equal(fs.statSync(path.join(dir, "work.json")).mode & 0o777, 0o600);
  });

  it("rejects names that are not filename-safe", () => {
    login("uuid-a", "a@example.com");
    for (const bad of ["../escape", "has/slash", "", "a".repeat(41), ".dotfirst"]) {
      assert.throws(() => profiles.saveProfile(bad), { code: "EBADNAME" }, `accepted ${bad}`);
    }
  });

  it("refuses to save when nobody is logged in", () => {
    fs.mkdirSync(HOME, { recursive: true });
    assert.throws(() => profiles.saveProfile("work"), { code: "ENOAUTH" });
  });

  it("switches the account and keeps everything else in the config", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    login("uuid-b", "b@example.com");
    profiles.saveProfile("personal");

    const result = profiles.activateProfile("work");
    assert.equal(result.savedOutgoing, "personal");

    const creds = JSON.parse(fs.readFileSync(CREDS, "utf8"));
    assert.equal(creds.claudeAiOauth.accessToken, "at-uuid-a");
    assert.equal(creds.claudeAiOauth.refreshToken, "rt-uuid-a");
    // MCP server tokens belong to the machine, not the account.
    assert.equal(creds.mcpOAuth["some:server"].accessToken, "mcp-token");

    const cfg = JSON.parse(fs.readFileSync(CONFIG, "utf8"));
    assert.equal(cfg.oauthAccount.accountUuid, "uuid-a");
    assert.equal(cfg.userID, "uid-uuid-a");
    // Untouched: everything that is not the account identity.
    assert.equal(cfg.numStartups, 7);
    assert.deepEqual(cfg.projects, { "/tmp/x": { allowedTools: [] } });

    const { items } = profiles.listProfiles();
    assert.deepEqual(
      items.map((p) => [p.name, p.active]),
      [
        ["personal", false],
        ["work", true],
      ]
    );
  });

  it("re-snapshots the outgoing account so refreshed tokens survive a round trip", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    login("uuid-b", "b@example.com");
    profiles.saveProfile("personal");
    profiles.activateProfile("work");

    // Simulate Claude Code refreshing the now-active account's token.
    const creds = JSON.parse(fs.readFileSync(CREDS, "utf8"));
    creds.claudeAiOauth.accessToken = "at-refreshed";
    fs.writeFileSync(CREDS, JSON.stringify(creds));

    profiles.activateProfile("personal");
    profiles.activateProfile("work");
    assert.equal(
      JSON.parse(fs.readFileSync(CREDS, "utf8")).claudeAiOauth.accessToken,
      "at-refreshed"
    );
  });

  it("refuses to switch away from an account that was never saved", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    login("uuid-b", "b@example.com"); // logged in, but not snapshotted
    assert.throws(() => profiles.activateProfile("work"), { code: "EUNSAVED" });
    // Nothing moved.
    assert.equal(JSON.parse(fs.readFileSync(CREDS, "utf8")).claudeAiOauth.accessToken, "at-uuid-b");
  });

  it("rewrites a second stale .claude.json so it cannot contradict the switch", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    login("uuid-b", "b@example.com");
    profiles.saveProfile("personal");
    const inner = path.join(HOME, ".claude.json");
    fs.writeFileSync(
      inner,
      JSON.stringify({ oauthAccount: { accountUuid: "uuid-stale" }, firstStartTime: "x" })
    );

    profiles.activateProfile("work");
    const cfg = JSON.parse(fs.readFileSync(inner, "utf8"));
    assert.equal(cfg.oauthAccount.accountUuid, "uuid-a");
    assert.equal(cfg.firstStartTime, "x");
  });

  it("does not create a .claude.json that was not there", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    login("uuid-b", "b@example.com");
    profiles.saveProfile("personal");
    profiles.activateProfile("work");
    assert.equal(fs.existsSync(path.join(HOME, ".claude.json")), false);
  });

  it("deletes an inactive profile and refuses the active one", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    login("uuid-b", "b@example.com");
    profiles.saveProfile("personal");

    assert.throws(() => profiles.deleteProfile("personal"), { code: "EACTIVE" });
    assert.deepEqual(profiles.deleteProfile("work"), { ok: true, name: "work" });
    assert.throws(() => profiles.deleteProfile("work"), { code: "ENOTFOUND" });
  });

  it("refuses to save an account that is already saved under another name", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    assert.throws(() => profiles.saveProfile("work-again"), { code: "EDUPLICATE" });
    // The rejected name left no file behind.
    assert.deepEqual(
      profiles.listProfiles().items.map((p) => p.name),
      ["work"]
    );
  });

  it("names the profile that already holds the account, so the error is actionable", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    assert.throws(() => profiles.saveProfile("dup"), /work/);
  });

  it("still re-snapshots an account into its own existing profile", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    assert.equal(profiles.saveProfile("work").name, "work");
  });

  it("derives a filename-safe slug and a readable label when no name is given", () => {
    login("uuid-a", "trí.vĩ@example.com");
    const saved = profiles.saveProfile();
    assert.match(saved.name, /^[a-zA-Z0-9][a-zA-Z0-9._-]*$/);
    const item = profiles.listProfiles().items[0];
    assert.equal(item.name, saved.name);
    assert.ok(item.label, "a saved profile always has a label to show");
  });

  it("labels an existing profile by its name when the file predates labels", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    const file = path.join(profiles.profilesDir(), "work.json");
    const stored = JSON.parse(fs.readFileSync(file, "utf8"));
    delete stored.label;
    fs.writeFileSync(file, JSON.stringify(stored));
    assert.equal(profiles.listProfiles().items[0].label, "work");
  });

  it("renames a profile's label, keeping its credentials and its identifier", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    const result = profiles.renameProfile("work", "Tài khoản chính");
    assert.equal(result.name, "work");
    assert.equal(result.label, "Tài khoản chính");

    const item = profiles.listProfiles().items[0];
    assert.equal(item.name, "work", "the identifier must not change under a rename");
    assert.equal(item.label, "Tài khoản chính");
    assert.equal(item.email, "a@example.com");
    // Switching still works, so the credentials survived the rewrite.
    login("uuid-b", "b@example.com");
    profiles.saveProfile("personal");
    profiles.activateProfile("work");
    assert.equal(JSON.parse(fs.readFileSync(CREDS, "utf8")).claudeAiOauth.accessToken, "at-uuid-a");
  });

  it("accepts spaces and diacritics in a label but not control characters", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    for (const good of ["Tài khoản chính", "Work / Personal", "công ty ⭐", "a b"]) {
      assert.equal(profiles.renameProfile("work", good).label, good);
    }
    for (const bad of ["", "   ", "a\nb", "a\tb", "x".repeat(61), 5, null]) {
      assert.throws(
        () => profiles.renameProfile("work", bad),
        { code: "EBADLABEL" },
        `took ${bad}`
      );
    }
  });

  it("trims a label rather than storing the padding", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    assert.equal(profiles.renameProfile("work", "  Chính  ").label, "Chính");
  });

  it("refuses a label another profile already uses, case-insensitively", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    login("uuid-b", "b@example.com");
    profiles.saveProfile("personal");

    profiles.renameProfile("work", "Chính");
    assert.throws(() => profiles.renameProfile("personal", "chính"), { code: "ELABELTAKEN" });
    // Renaming a profile to the label it already has is not a conflict.
    assert.equal(profiles.renameProfile("work", "Chính").label, "Chính");
  });

  it("refuses to rename a profile that does not exist", () => {
    login("uuid-a", "a@example.com");
    assert.throws(() => profiles.renameProfile("nope", "X"), { code: "ENOTFOUND" });
  });

  it("deletes a duplicate of the live account while another copy still holds it", () => {
    // The state a pre-EDUPLICATE save could leave behind: two profiles, one
    // account, both flagged active — and with a blanket active-guard, neither
    // deletable. Cleanup has to be possible.
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    const dup = path.join(profiles.profilesDir(), "work-copy.json");
    fs.copyFileSync(path.join(profiles.profilesDir(), "work.json"), dup);

    assert.deepEqual(
      profiles.listProfiles().items.map((p) => [p.name, p.active]),
      [
        ["work", true],
        ["work-copy", true],
      ]
    );
    assert.deepEqual(profiles.deleteProfile("work-copy"), { ok: true, name: "work-copy" });
    // The last copy of the live account is still protected.
    assert.throws(() => profiles.deleteProfile("work"), { code: "EACTIVE" });
  });

  it("skips corrupt profile files instead of failing the whole list", () => {
    login("uuid-a", "a@example.com");
    profiles.saveProfile("work");
    fs.writeFileSync(path.join(profiles.profilesDir(), "broken.json"), "{not json");
    const { items } = profiles.listProfiles();
    assert.deepEqual(
      items.map((p) => p.name),
      ["work"]
    );
  });

  it("reports a corrupt live credentials file rather than guessing", () => {
    fs.mkdirSync(HOME, { recursive: true });
    fs.writeFileSync(CREDS, "{nope");
    assert.throws(() => profiles.listProfiles(), { code: "EBADJSON" });
  });
});