import { mkdtempSync, rmSync } from "node:fs";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { describe, it, expect, beforeEach, afterEach } from "vitest";
import { createDatabase, type BotDatabase, type BotInstance, type PlayHistoryEntry } from "./database.js";
import { createUserStore, GUEST_USER_ID } from "./users.js";

describe("database", () => {
  let botDb: BotDatabase;

  beforeEach(() => {
    botDb = createDatabase(":memory:");
  });

  afterEach(() => {
    botDb.close();
  });

  it("creates tables on init", () => {
    const tables = botDb.db
      .prepare(
        "SELECT name FROM sqlite_master WHERE type='table' ORDER BY name"
      )
      .all() as Array<{ name: string }>;
    const names = tables.map((t) => t.name);
    expect(names).toContain("play_history");
    expect(names).toContain("bot_instances");
  });

  it("creates users and sessions tables on init", () => {
    const tables = botDb.db
      .prepare("SELECT name FROM sqlite_master WHERE type='table' ORDER BY name")
      .all() as Array<{ name: string }>;
    const names = tables.map((t) => t.name);
    expect(names).toContain("users");
    expect(names).toContain("sessions");

    const userCols = botDb.db.prepare("PRAGMA table_info(users)").all() as Array<{ name: string }>;
    const userColNames = userCols.map((c) => c.name).sort();
    expect(userColNames).toEqual(["createdAt", "id", "passwordHash", "role", "updatedAt", "username"]);

    const sessionCols = botDb.db.prepare("PRAGMA table_info(sessions)").all() as Array<{ name: string }>;
    const sessionColNames = sessionCols.map((c) => c.name).sort();
    expect(sessionColNames).toEqual(["createdAt", "expiresAt", "id", "lastSeenAt", "userId"]);
  });

  it("creates user_audit table on init", () => {
    const tables = botDb.db
      .prepare("SELECT name FROM sqlite_master WHERE type='table' ORDER BY name")
      .all() as Array<{ name: string }>;
    expect(tables.map((t) => t.name)).toContain("user_audit");
  });

  it("records and retrieves play history", () => {
    botDb.addPlayHistory({
      botId: "bot1",
      songId: "song1",
      songName: "Test Song",
      artist: "Test Artist",
      album: "Test Album",
      platform: "netease",
      coverUrl: "https://example.com/cover.jpg",
    });

    botDb.addPlayHistory({
      botId: "bot1",
      songId: "song2",
      songName: "Another Song",
      artist: "Another Artist",
      album: "Another Album",
      platform: "qq",
      coverUrl: "https://example.com/cover2.jpg",
    });

    const history = botDb.getPlayHistory("bot1", 10);
    expect(history).toHaveLength(2);
    expect(history[0].songName).toBe("Another Song");
    expect(history[1].songName).toBe("Test Song");
  });

  it("saves and loads bot instances", () => {
    const instance: BotInstance = {
      id: "bot1",
      name: "Music Bot",
      serverAddress: "localhost",
      serverPort: 9987,
      nickname: "MusicBot",
      defaultChannel: "Music",
      channelId: "",
      channelPassword: "",
      autoStart: true,
      serverProtocol: "",
      ts6ApiKey: "",
      serverPassword: "",
    };

    botDb.saveBotInstance(instance);
    const instances = botDb.getBotInstances();
    expect(instances).toHaveLength(1);
    expect(instances[0]).toMatchObject(instance);
    expect(instances[0].autoStart).toBe(true);

    // Test upsert
    botDb.saveBotInstance({ ...instance, nickname: "UpdatedBot", autoStart: false });
    const updated = botDb.getBotInstances();
    expect(updated).toHaveLength(1);
    expect(updated[0].nickname).toBe("UpdatedBot");
    expect(updated[0].autoStart).toBe(false);
  });

  it("deletes bot instance", () => {
    botDb.saveBotInstance({
      id: "bot1",
      name: "Music Bot",
      serverAddress: "localhost",
      serverPort: 9987,
      nickname: "MusicBot",
      defaultChannel: "Music",
      channelId: "",
      channelPassword: "",
      autoStart: false,
      serverProtocol: "",
      ts6ApiKey: "",
      serverPassword: "",
    });

    expect(botDb.deleteBotInstance("bot1")).toBe(true);
    expect(botDb.getBotInstances()).toHaveLength(0);
    expect(botDb.deleteBotInstance("nonexistent")).toBe(false);
  });

  it("persists and clears customAvatarPath on a bot instance", () => {
    const inst = {
      id: "bot-1",
      name: "B",
      serverAddress: "x",
      serverPort: 9987,
      nickname: "n",
      defaultChannel: "",
      channelId: "",
      channelPassword: "",
      autoStart: false,
      serverProtocol: "",
      ts6ApiKey: "",
      serverPassword: "",
    };
    botDb.saveBotInstance(inst);
    expect(botDb.getCustomAvatarPath("bot-1")).toBeNull();
    botDb.setCustomAvatarPath("bot-1", "avatars/bot-1.png");
    expect(botDb.getCustomAvatarPath("bot-1")).toBe("avatars/bot-1.png");
    botDb.setCustomAvatarPath("bot-1", null);
    expect(botDb.getCustomAvatarPath("bot-1")).toBeNull();
  });
});

describe("guest principal migration", () => {
  it("creates exactly one reserved guest row, idempotently", () => {
    const dir = mkdtempSync(join(tmpdir(), "tsmb-db-"));
    const p = join(dir, "t.db");
    const a = createDatabase(p); a.db.close();
    const b = createDatabase(p); // run again — must not duplicate
    const row = b.db.prepare("SELECT id, role FROM users WHERE id = ?").get(GUEST_USER_ID) as { id: string; role: string } | undefined;
    expect(row?.role).toBe("guest");
    const n = (b.db.prepare("SELECT COUNT(*) AS n FROM users WHERE role='guest'").get() as { n: number }).n;
    expect(n).toBe(1);
    b.db.close();
    rmSync(dir, { recursive: true, force: true });
  });

  it("guest row does not break first-run detection (countUsers excludes it)", () => {
    const dir = mkdtempSync(join(tmpdir(), "tsmb-db2-"));
    const p = join(dir, "t.db");
    const d = createDatabase(p);
    const users = createUserStore(d.db);
    expect(users.countUsers()).toBe(0); // guest excluded → still needs setup
    d.db.close();
    rmSync(dir, { recursive: true, force: true });
  });
});