<?php
namespace nulib\cache;

use nulib\db\Capacitor;
use nulib\db\sqlite\Sqlite;
use nulib\db\sqlite\SqliteStorage;
use nulib\output\msg;
use nulib\output\std\StdMessenger;
use nulib\tests\TestCase;
use Traversable;

class SourceTest extends TestCase {
  static function setUpBeforeClass(): void {
    msg::set_messenger_class(StdMessenger::class);
  }

  /** @param Traversable|iterable $dest */
  protected static function assertSource($dest): void {
    self::assertSame([
      ["pk" => 1, "s" => null, "i" => null, "b" => null],
      ["pk" => 2, "s" => "false", "i" => 0, "b" => 0],
      ["pk" => 3, "s" => "first", "i" => 1, "b" => 1],
      ["pk" => 4, "s" => "second", "i" => 2, "b" => 1],
    ], iterator_to_array($dest));
  }

  function testDirect() {
    $destStorage = new SqliteStorage(new Sqlite(__DIR__.'/dest.db'));
    new Capacitor($destStorage, $dest = new CursorChannel("source"));

    $sourceDb = new SourceDb();
    $dest->rechargeAll($sourceDb->all("select * from source"));

    $this->assertSource($dest);
  }

  function testCache() {
    $getSource = function() {
      $db = new SourceDb();
      msg::info("query source");
      yield from $db->all("select * from source");
    };

    $params = [
      "duration" => 2,
      "override_duration" => true,
    ];

    msg::info("initial");
    cache::nc();
    $dest = cache::all("source", $getSource(), $params);
    $this->assertSource($dest);

    msg::info("cached");
    $dest = cache::all("source", $getSource(), $params);
    $this->assertSource($dest);

    sleep(4);
    msg::info("expired");
    $dest = cache::all("source", $getSource(), $params);
    $this->assertSource($dest);

    sleep(4);
    msg::info("end");
  }
}