'use strict';

const test = require('node:test');
const assert = require('node:assert');

const { ScheduledMessenger, normalizeTasks, clampInterval, MIN_INTERVAL_SECONDS, MAX_TASKS } = require('../src/bot/scheduledMessenger');

/** 造一个可控的假 BotManager */
function fakeManager(options) {
  const opts = options || {};
  const sent = [];
  return {
    connection: { username: 'BotA' },
    canSendChat: () => opts.canSend !== false,
    sendChat: (content) => {
      sent.push(content);
      return true;
    },
    sent
  };
}

test('normalizeTasks 丢弃空内容、补齐默认值、按 / 前缀判定类型', () => {
  const tasks = normalizeTasks([
    { id: 'a', content: '/u restore confirm', intervalSeconds: 300, label: '恢复民心' },
    { content: '大家好', intervalSeconds: 60 },
    { content: '   ' },
    null,
    { intervalSeconds: 10 }
  ]);
  assert.strictEqual(tasks.length, 2);
  assert.strictEqual(tasks[0].kind, 'command', '以 / 开头应识别为指令');
  assert.strictEqual(tasks[0].enabled, true, '默认启用');
  assert.strictEqual(tasks[1].kind, 'chat');
  assert.ok(tasks[1].id, '缺 id 时应自动生成');
});

test('normalizeTasks 钳制间隔到合理范围并限制条数', () => {
  assert.strictEqual(clampInterval(1), MIN_INTERVAL_SECONDS, '间隔不能小于下限，否则等同刷屏');
  assert.strictEqual(clampInterval(999999), 86400);
  assert.strictEqual(clampInterval('abc'), 300, '非法值回退到 5 分钟');
  const many = [];
  for (let i = 0; i < MAX_TASKS + 10; i++) many.push({ content: 'm' + i, intervalSeconds: 60 });
  assert.strictEqual(normalizeTasks(many).length, MAX_TASKS);
});

test('id 重复时自动改名，保证每个任务独立计时', () => {
  const tasks = normalizeTasks([
    { id: 'x', content: 'a', intervalSeconds: 60 },
    { id: 'x', content: 'b', intervalSeconds: 60 }
  ]);
  assert.strictEqual(tasks.length, 2);
  assert.notStrictEqual(tasks[0].id, tasks[1].id);
});

test('到点才发送，且按间隔重复', () => {
  const manager = fakeManager();
  const messenger = new ScheduledMessenger(manager, null);
  const t0 = 1_000_000;
  messenger.setTasks([{ id: 'restore', content: '/u restore confirm', intervalSeconds: 300 }], t0);

  assert.strictEqual(messenger.tick(t0), 0, '刚设置完不应立即发送');
  assert.strictEqual(messenger.tick(t0 + 299_000), 0, '未到间隔不发');
  assert.strictEqual(messenger.tick(t0 + 300_000), 1, '到点应发送');
  assert.deepStrictEqual(manager.sent, ['/u restore confirm']);
  assert.strictEqual(messenger.tick(t0 + 599_000), 0);
  assert.strictEqual(messenger.tick(t0 + 600_000), 1, '第二个周期应再发一次');
  assert.strictEqual(manager.sent.length, 2);
});

test('未连接 / 未通过登录验证时跳过本次并顺延，不补发', () => {
  const manager = fakeManager({ canSend: false });
  const messenger = new ScheduledMessenger(manager, null);
  const t0 = 1_000_000;
  messenger.setTasks([{ id: 'a', content: 'hi', intervalSeconds: 60 }], t0);
  assert.strictEqual(messenger.tick(t0 + 60_000), 0, '未就绪时不发送');
  assert.deepStrictEqual(manager.sent, []);
  // 顺延一个周期：即使中间恢复也不会把漏掉的补发出来
  manager.canSendChat = () => true;
  assert.strictEqual(messenger.tick(t0 + 61_000), 0, '不能补发上一周期的内容');
  assert.strictEqual(messenger.tick(t0 + 120_000), 1);
  assert.deepStrictEqual(manager.sent, ['hi']);
});

test('禁用的任务不发送', () => {
  const manager = fakeManager();
  const messenger = new ScheduledMessenger(manager, null);
  messenger.setTasks([{ id: 'a', content: 'hi', intervalSeconds: 60, enabled: false }], 1_000_000);
  assert.strictEqual(messenger.tick(1_000_000 + 120_000), 0);
  assert.deepStrictEqual(manager.sent, []);
});

test('多个任务各自独立计时', () => {
  const manager = fakeManager();
  const messenger = new ScheduledMessenger(manager, null);
  const t0 = 1_000_000;
  messenger.setTasks([
    { id: 'fast', content: 'A', intervalSeconds: 30 },
    { id: 'slow', content: 'B', intervalSeconds: 300 }
  ], t0);
  assert.strictEqual(messenger.tick(t0 + 30_000), 1);
  assert.strictEqual(messenger.tick(t0 + 60_000), 1);
  assert.strictEqual(messenger.tick(t0 + 300_000), 2, '两个任务在同一时刻都到点');
  assert.deepStrictEqual(manager.sent, ['A', 'A', 'A', 'B']);
});

test('snapshot 暴露剩余秒数供控制台展示', () => {
  const manager = fakeManager();
  const messenger = new ScheduledMessenger(manager, null);
  messenger.setTasks([{ id: 'a', label: '恢复', content: '/u restore confirm', intervalSeconds: 300 }], Date.now());
  const snap = messenger.snapshot();
  assert.strictEqual(snap.length, 1);
  assert.strictEqual(snap[0].label, '恢复');
  assert.strictEqual(snap[0].kind, 'command');
  assert.ok(snap[0].nextDueAt > 0);
  assert.ok(snap[0].nextInSeconds <= 300 && snap[0].nextInSeconds >= 0);
});

test('setTasks 整体替换并重置计时', () => {
  const manager = fakeManager();
  const messenger = new ScheduledMessenger(manager, null);
  const t0 = 1_000_000;
  messenger.setTasks([{ id: 'a', content: 'A', intervalSeconds: 60 }], t0);
  messenger.tick(t0 + 60_000);
  assert.strictEqual(manager.sent.length, 1);

  messenger.setTasks([{ id: 'b', content: 'B', intervalSeconds: 60 }], t0 + 60_000);
  assert.strictEqual(messenger.snapshot().length, 1);
  assert.strictEqual(messenger.tick(t0 + 61_000), 0, '替换后重新计时，不应立刻发送');
  assert.strictEqual(messenger.tick(t0 + 200_000), 1);
  assert.deepStrictEqual(manager.sent, ['A', 'B']);
});

test('start / stop 控制心跳定时器', () => {
  const messenger = new ScheduledMessenger(fakeManager(), null);
  messenger.start();
  assert.ok(messenger._timer, 'start 后应有定时器');
  const timer = messenger._timer;
  messenger.start();
  assert.strictEqual(messenger._timer, timer, '重复 start 不应叠加定时器');
  messenger.stop();
  assert.strictEqual(messenger._timer, null);
});