import { describe, expect, it } from "vitest";
import { existsSync, mkdtempSync, readFileSync, rmSync } from "node:fs";
import { spawnSync } from "node:child_process";
import { tmpdir } from "node:os";
import path from "node:path";
import Database from "better-sqlite3";

const root = path.resolve(process.cwd());
const cli = path.join(root, "server", "cli", "admin-init.ts");
const tsx = path.join(root, "node_modules", "tsx", "dist", "cli.mjs");

function runAdmin(dataDir: string, args: string[]) {
  return spawnSync(process.execPath, [tsx, cli, ...args], {
    cwd: root,
    env: {
      ...process.env,
      NODE_ENV: "test",
      TALLYNOTE_DATA_DIR: dataDir,
      TALLYNOTE_PUBLIC_ORIGIN: "http://127.0.0.1:3999",
      TALLYNOTE_COOKIE_SECURE: "false",
      TALLYNOTE_UPDATE_STRATEGY: "disabled",
    },
    encoding: "utf8",
  });
}

describe("生产管理员初始化 CLI", () => {
  it("--check 是只读的，空数据目录不会被创建", () => {
    const parent = mkdtempSync(path.join(tmpdir(), "tallynote-admin-check-"));
    const dataDir = path.join(parent, "data");
    try {
      const result = runAdmin(dataDir, ["--check"]);
      expect(result.status).toBe(0);
      expect(result.stdout.trim()).toBe("empty");
      expect(existsSync(dataDir)).toBe(false);
      expect(existsSync(path.join(dataDir, "tallynote.db"))).toBe(false);
    } finally {
      rmSync(parent, { recursive: true, force: true });
    }
  });

  it("--check 不会执行迁移或创建 schema_migrations", () => {
    const dataDir = mkdtempSync(path.join(tmpdir(), "tallynote-admin-check-"));
    const database = new Database(path.join(dataDir, "tallynote.db"));
    database.exec("CREATE TABLE admins (id TEXT PRIMARY KEY)");
    database.close();
    try {
      const result = runAdmin(dataDir, ["--check"]);
      expect(result.status).toBe(0);
      expect(result.stdout.trim()).toBe("empty");
      const verify = new Database(path.join(dataDir, "tallynote.db"), { readonly: true });
      const schemaMigrations = verify
        .prepare("SELECT name FROM sqlite_master WHERE type = 'table' AND name = 'schema_migrations'")
        .get();
      expect(schemaMigrations).toBeUndefined();
      verify.close();
    } finally {
      rmSync(dataDir, { recursive: true, force: true });
    }
  });

  it("只允许初始化首位管理员，并写入一次性密码和审计记录", () => {
    const dataDir = mkdtempSync(path.join(tmpdir(), "tallynote-admin-init-"));
    try {
      const first = runAdmin(dataDir, ["--username", "admin", "--display-name", "管理员", "--generate"]);
      expect(first.status).toBe(0);
      expect(first.stdout).toMatch(/已创建首位管理员。一次性密码：\S+/);

      const database = new Database(path.join(dataDir, "tallynote.db"));
      const admin = database.prepare("SELECT username, display_name, must_change_password FROM admins").get() as { username: string; display_name: string; must_change_password: number };
      const audit = database.prepare("SELECT action, actor_username FROM audit_events ORDER BY occurred_at DESC LIMIT 1").get() as { action: string; actor_username: string };
      expect(admin).toEqual({ username: "admin", display_name: "管理员", must_change_password: 1 });
      expect(audit).toEqual({ action: "admin.initialized", actor_username: "cli" });
      database.close();

      const check = runAdmin(dataDir, ["--check"]);
      expect(check.status).toBe(0);
      expect(check.stdout.trim()).toBe("initialized");

      const second = runAdmin(dataDir, ["--username", "other", "--display-name", "其他", "--generate"]);
      expect(second.status).not.toBe(0);
      expect(`${second.stdout}${second.stderr}`).toContain("INITIAL_ADMIN_EXISTS");
    } finally {
      rmSync(dataDir, { recursive: true, force: true });
    }
  }, 15_000);

  it("交互式输入正式密码后不会强制首次改密", () => {
    const dataDir = mkdtempSync(path.join(tmpdir(), "tallynote-admin-init-"));
    try {
      const expectScript = [
        "set timeout 15",
        `spawn ${process.execPath} ${tsx} ${cli}`,
        'expect "用户名: "',
        'send "manual-admin\\r"',
        'expect "显示名称: "',
        'send "手动管理员\\r"',
        'expect "密码（至少 12 个字符）: "',
        'send "Strong-password-2026!\\r"',
        'expect "再次输入密码: "',
        'send "Strong-password-2026!\\r"',
        'expect eof',
      ].join("\n");
      const result = spawnSync("expect", ["-c", expectScript], {
        cwd: root,
        env: {
          ...process.env,
          NODE_ENV: "test",
          TALLYNOTE_DATA_DIR: dataDir,
          TALLYNOTE_PUBLIC_ORIGIN: "http://127.0.0.1:3999",
          TALLYNOTE_COOKIE_SECURE: "false",
          TALLYNOTE_UPDATE_STRATEGY: "disabled",
        },
        encoding: "utf8",
      });
      expect(result.status).toBe(0);
      expect(`${result.stdout}${result.stderr}`).toContain("已创建首位管理员");
      expect(`${result.stdout}${result.stderr}`).toContain("Strong-password-2026!");

      const database = new Database(path.join(dataDir, "tallynote.db"));
      const admin = database.prepare("SELECT username, must_change_password FROM admins").get() as { username: string; must_change_password: number };
      expect(admin).toEqual({ username: "manual-admin", must_change_password: 0 });
      database.close();
    } finally {
      rmSync(dataDir, { recursive: true, force: true });
    }
  }, 30_000);

  it("可以验证当前密码并清除旧版本遗留的首次改密标志", () => {
    const dataDir = mkdtempSync(path.join(tmpdir(), "tallynote-admin-init-"));
    try {
      const first = runAdmin(dataDir, ["--username", "legacy-admin", "--display-name", "旧版管理员", "--generate"]);
      expect(first.status).toBe(0);
      const generated = first.stdout.match(/一次性密码：([^\s]+)/)?.[1];
      expect(generated).toBeTruthy();

      const expectScript = [
        "set timeout 15",
        `spawn ${process.execPath} ${tsx} ${cli} --mark-password-configured --username legacy-admin`,
        'expect "当前密码: "',
        `send "${generated}\\r"`,
        'expect eof',
      ].join("\n");
      const result = spawnSync("expect", ["-c", expectScript], {
        cwd: root,
        env: {
          ...process.env,
          NODE_ENV: "test",
          TALLYNOTE_DATA_DIR: dataDir,
          TALLYNOTE_PUBLIC_ORIGIN: "http://127.0.0.1:3999",
          TALLYNOTE_COOKIE_SECURE: "false",
          TALLYNOTE_UPDATE_STRATEGY: "disabled",
        },
        encoding: "utf8",
      });
      expect(result.status).toBe(0);
      expect(`${result.stdout}${result.stderr}`).toContain("已确认当前密码为正式密码");

      const database = new Database(path.join(dataDir, "tallynote.db"));
      const admin = database.prepare("SELECT must_change_password FROM admins WHERE username_norm='legacy-admin'").get() as { must_change_password: number };
      expect(admin.must_change_password).toBe(0);
      database.close();
    } finally {
      rmSync(dataDir, { recursive: true, force: true });
    }
  }, 30_000);

  it("密码输入不是 TTY 时明确拒绝通过管道传入", () => {
    const dataDir = mkdtempSync(path.join(tmpdir(), "tallynote-admin-init-"));
    try {
      const result = spawnSync(process.execPath, [tsx, cli], {
        cwd: root,
        input: "admin\n管理员\npassword-password\npassword-password\n",
        env: {
          ...process.env,
          NODE_ENV: "test",
          TALLYNOTE_DATA_DIR: dataDir,
          TALLYNOTE_PUBLIC_ORIGIN: "http://127.0.0.1:3999",
          TALLYNOTE_COOKIE_SECURE: "false",
          TALLYNOTE_UPDATE_STRATEGY: "disabled",
        },
        encoding: "utf8",
      });
      expect(result.status).not.toBe(0);
      expect(`${result.stdout}${result.stderr}`).toContain("交互式 TTY");
      expect(readFileSync(path.join(dataDir, "tallynote.db"))).toBeTruthy();
    } finally {
      rmSync(dataDir, { recursive: true, force: true });
    }
  });
});