<?php

use PHPUnit\Framework\TestCase;
use App\Api\PorkbunAPI;
use App\Command\UpdateDnsCommand;
use App\Config\Config;
use App\Util\Logger;

class UpdateDnsCommandTest extends TestCase
{
	private $config;
	private $logger;

	protected function setUp(): void
	{
		$this->config = $this->createMock(Config::class);
		$this->logger = $this->createMock(Logger::class);
	}

	// Scenario: DNS already matches public IP, so no update should occur:
	public function testNoChangesNeeded()
	{
		$api = $this->createMock(PorkbunAPI::class);

		// ping() must return yourIp or the command returns STATUS_ERROR immediately:
		$api->method('ping')->willReturn('{"status":"SUCCESS","yourIp":"1.2.3.4"}');

		// retrieve() must return JSON with a records array, otherwise json_decode() fails:
		$api->method('retrieve')->willReturn(json_encode(
			[
				"records" => [
				[
					"name"	  => "test.example.com",
					"type"	  => "A",
					"content" => "1.2.3.4",
					"id"	  => "123"
				]
			]
		]));

		$cmd = new UpdateDnsCommand($this->config, $this->logger);
		$status = $cmd->run(["script.php", "example.com"], $api, "1.2.3.4");

		$this->assertSame(UpdateDnsCommand::STATUS_NOTHING_TO_CHANGE, $status);
	}

	// Scenario: DNS is outdated, so edit() should be called and STATUS_UPDATED returned:
	public function testDnsIsUpdated()
	{
		$api = $this->createMock(PorkbunAPI::class);

		// ping() must return yourIp or the command returns STATUS_ERROR immediately:
		$api->method('ping')->willReturn('{"status":"SUCCESS","yourIp":"1.2.3.4"}');

		// retrieve() must return JSON with a records array, otherwise json_decode() fails:
		$api->method('retrieve')->willReturn(json_encode(
			[
				"records" => [
				[
					"name"	  => "test.example.com",
					"type"	  => "A",
					"content" => "5.6.7.8",
					"id"	  => "123"
				]
			]
		]));

		// edit() must return a SUCCESS status or the command returns STATUS_ERROR:
		$api->method('edit')->willReturn(json_encode(["status" => "SUCCESS"]));
		
		// When DNS is updated, the command must record the change in the log exactly once:
		$this->logger->expects($this->once())->method('log')->with($this->stringContains("Updated DNS"));

		$cmd = new UpdateDnsCommand($this->config, $this->logger);
		$status = $cmd->run(["script.php", "example.com"], $api, "1.2.3.4");

		$this->assertSame(UpdateDnsCommand::STATUS_UPDATED, $status);
	}
}