// tab-filters.test.mjs — TDD tests for new tab filter functions
//
// Run with: node --test web/test/tab-filters.test.mjs

import { describe, it } from 'node:test';
import assert from 'node:assert/strict';
import { filterQueueTasks, filterReadyTasks, filterAllDoneTasks } from '../app.js';

// ── Helpers ────────────────────────────────────────────────────────────────────

function makeTask(state, created_at = null) {
  return { id: state, name: `task-${state}`, state, created_at };
}

const ALL_STATES = [
  'PENDING', 'QUEUED', 'RUNNING', 'READY', 'BLOCKED',
  'COMPLETED', 'FAILED', 'TIMED_OUT', 'CANCELLED', 'BUDGET_EXCEEDED',
];

// ── filterQueueTasks ──────────────────────────────────────────────────────────

describe('filterQueueTasks', () => {
  it('includes QUEUED tasks', () => {
    const tasks = ALL_STATES.map(s => makeTask(s));
    const result = filterQueueTasks(tasks);
    assert.ok(result.some(t => t.state === 'QUEUED'), 'QUEUED should be included');
  });

  it('includes PENDING tasks', () => {
    const tasks = ALL_STATES.map(s => makeTask(s));
    const result = filterQueueTasks(tasks);
    assert.ok(result.some(t => t.state === 'PENDING'), 'PENDING should be included');
  });

  it('excludes all other states', () => {
    const tasks = ALL_STATES.map(s => makeTask(s));
    const result = filterQueueTasks(tasks);
    for (const state of ['RUNNING', 'READY', 'BLOCKED', 'COMPLETED', 'FAILED', 'TIMED_OUT', 'CANCELLED', 'BUDGET_EXCEEDED']) {
      assert.ok(!result.some(t => t.state === state), `${state} should be excluded`);
    }
  });

  it('returns only QUEUED and PENDING (length 2 from all states)', () => {
    const tasks = ALL_STATES.map(s => makeTask(s));
    const result = filterQueueTasks(tasks);
    assert.equal(result.length, 2);
  });

  it('returns empty array for empty input', () => {
    assert.deepEqual(filterQueueTasks([]), []);
  });
});

// ── filterReadyTasks ──────────────────────────────────────────────────────────

describe('filterReadyTasks', () => {
  it('includes READY tasks', () => {
    const tasks = ALL_STATES.map(s => makeTask(s));
    const result = filterReadyTasks(tasks);
    assert.ok(result.some(t => t.state === 'READY'), 'READY should be included');
  });

  it('excludes all non-READY states', () => {
    const tasks = ALL_STATES.map(s => makeTask(s));
    const result = filterReadyTasks(tasks);
    for (const state of ['PENDING', 'QUEUED', 'RUNNING', 'BLOCKED', 'COMPLETED', 'FAILED', 'TIMED_OUT', 'CANCELLED', 'BUDGET_EXCEEDED']) {
      assert.ok(!result.some(t => t.state === state), `${state} should be excluded`);
    }
  });

  it('returns only READY tasks (length 1 from all states)', () => {
    const tasks = ALL_STATES.map(s => makeTask(s));
    const result = filterReadyTasks(tasks);
    assert.equal(result.length, 1);
  });

  it('returns empty array for empty input', () => {
    assert.deepEqual(filterReadyTasks([]), []);
  });
});

// ── filterAllDoneTasks ────────────────────────────────────────────────────────

describe('filterAllDoneTasks', () => {
  it('includes COMPLETED tasks within 24h', () => {
    const now = new Date().toISOString();
    const result = filterAllDoneTasks([makeTask('COMPLETED', now)]);
    assert.equal(result.length, 1);
  });

  it('includes TIMED_OUT tasks within 24h', () => {
    const now = new Date().toISOString();
    const result = filterAllDoneTasks([makeTask('TIMED_OUT', now)]);
    assert.equal(result.length, 1);
  });

  it('includes BUDGET_EXCEEDED tasks within 24h', () => {
    const now = new Date().toISOString();
    const result = filterAllDoneTasks([makeTask('BUDGET_EXCEEDED', now)]);
    assert.equal(result.length, 1);
  });

  it('excludes non-done states', () => {
    const now = new Date().toISOString();
    const tasks = ALL_STATES.map(s => makeTask(s, now));
    const result = filterAllDoneTasks(tasks);
    for (const state of ['PENDING', 'QUEUED', 'RUNNING', 'READY', 'BLOCKED', 'FAILED', 'CANCELLED']) {
      assert.ok(!result.some(t => t.state === state), `${state} should be excluded`);
    }
  });

  it('excludes COMPLETED tasks older than 24h by default', () => {
    const longAgo = new Date(Date.now() - 25 * 60 * 60 * 1000).toISOString();
    const result = filterAllDoneTasks([makeTask('COMPLETED', longAgo)]);
    assert.equal(result.length, 0, 'should hide tasks older than 24h');
  });

  it('includes tasks with null created_at by default (defensive)', () => {
    const result = filterAllDoneTasks([makeTask('COMPLETED', null)]);
    assert.equal(result.length, 1);
  });

  it('returns empty array for empty input', () => {
    assert.deepEqual(filterAllDoneTasks([]), []);
  });
});