<?php
/**
 * Webhook 单元测试
 */
require_once __DIR__ . '/../application/common/library/WebhookHandler.php';

class WebhookTest
{
    private $passed = 0;
    private $failed = 0;

    public function run()
    {
        echo "=== 开始执行 Webhook 单元测试 (TDD) ===\n";
        $this->testInvalidTokenRejection();
        $this->testUrlTokenAllowed();
        $this->testHeaderTokenAllowed();
        $this->testHmacSha256SignatureAllowed();
        $this->testHubSignature256Allowed();
        $this->testNonPostMethodRejection();
        $this->testPingEventSuccess();
        $this->testIgnoredBranchSkipped();
        $this->testTargetBranchTriggersDeploy();

        echo "\n测试结果: {$this->passed} 通过, {$this->failed} 失败\n";
        if ($this->failed > 0) {
            exit(1);
        }
    }

    private function assert($condition, $message)
    {
        if ($condition) {
            echo "  [PASS] {$message}\n";
            $this->passed++;
        } else {
            echo "  [FAIL] {$message}\n";
            $this->failed++;
        }
    }

    /**
     * 测试非法 Token 被拦截
     */
    public function testInvalidTokenRejection()
    {
        $handler = new \app\common\library\WebhookHandler('test_secret_123');
        $server = ['REQUEST_METHOD' => 'POST', 'HTTP_X_GITEA_TOKEN' => 'wrong_token'];
        $res = $handler->handle($server, [], '{}');

        $this->assert($res['code'] === 403, "非法 Token 应返回 HTTP 403");
        $this->assert($res['data']['status'] === 'error', "非法 Token 应返回 error 状态");
    }

    /**
     * 测试通过 URL 参数传递 Token 允许通过
     */
    public function testUrlTokenAllowed()
    {
        $handler = new \app\common\library\WebhookHandler('test_secret_123');
        $server = ['REQUEST_METHOD' => 'POST'];
        $get = ['token' => 'test_secret_123'];
        $res = $handler->handle($server, $get, json_encode(['ref' => 'refs/heads/master']));

        $this->assert($res['code'] === 200, "合法 URL Token 应返回 HTTP 200");
    }

    /**
     * 测试通过 Header 传递 Token 允许通过
     */
    public function testHeaderTokenAllowed()
    {
        $handler = new \app\common\library\WebhookHandler('test_secret_123');
        $server = ['REQUEST_METHOD' => 'POST', 'HTTP_X_GITEA_TOKEN' => 'test_secret_123'];
        $res = $handler->handle($server, [], json_encode(['ref' => 'refs/heads/master']));

        $this->assert($res['code'] === 200, "合法 Header Token 应返回 HTTP 200");
    }

    /**
     * 测试通过 Gitea HMAC-SHA256 签名校验
     */
    public function testHmacSha256SignatureAllowed()
    {
        $handler = new \app\common\library\WebhookHandler('test_secret_123');
        $body = json_encode(['ref' => 'refs/heads/master']);
        $sig = hash_hmac('sha256', $body, 'test_secret_123');
        $server = ['REQUEST_METHOD' => 'POST', 'HTTP_X_GITEA_SIGNATURE' => $sig];
        $res = $handler->handle($server, [], $body);

        $this->assert($res['code'] === 200, "合法 HMAC-SHA256 签名应返回 HTTP 200");
    }

    /**
     * 测试通过 GitHub/Gitea sha256= 前缀签名校验
     */
    public function testHubSignature256Allowed()
    {
        $handler = new \app\common\library\WebhookHandler('test_secret_123');
        $body = json_encode(['ref' => 'refs/heads/master']);
        $sig = 'sha256=' . hash_hmac('sha256', $body, 'test_secret_123');
        $server = ['REQUEST_METHOD' => 'POST', 'HTTP_X_HUB_SIGNATURE_256' => $sig];
        $res = $handler->handle($server, [], $body);

        $this->assert($res['code'] === 200, "合法 X-Hub-Signature-256 签名应返回 HTTP 200");
    }

    /**
     * 测试非 POST 请求被拒绝
     */
    public function testNonPostMethodRejection()
    {
        $handler = new \app\common\library\WebhookHandler('test_secret_123');
        $server = ['REQUEST_METHOD' => 'GET'];
        $get = ['token' => 'test_secret_123'];
        $res = $handler->handle($server, $get, '');

        $this->assert($res['code'] === 405, "非 POST 请求应返回 HTTP 405");
    }

    /**
     * 测试 Gitea Ping / Test 事件直接响应成功
     */
    public function testPingEventSuccess()
    {
        $handler = new \app\common\library\WebhookHandler('test_secret_123');
        $server = [
            'REQUEST_METHOD' => 'POST',
            'HTTP_X_GITEA_EVENT' => 'ping',
            'HTTP_X_GITEA_TOKEN' => 'test_secret_123'
        ];
        $res = $handler->handle($server, [], '{}');

        $this->assert($res['code'] === 200, "Ping 事件应返回 HTTP 200");
        $this->assert($res['data']['message'] === 'pong', "Ping 事件应返回 pong 响应");
    }

    /**
     * 测试非目标分支推送被跳过
     */
    public function testIgnoredBranchSkipped()
    {
        $handler = new \app\common\library\WebhookHandler('test_secret_123', 'master');
        $server = ['REQUEST_METHOD' => 'POST', 'HTTP_X_GITEA_TOKEN' => 'test_secret_123'];
        $body = json_encode(['ref' => 'refs/heads/feature_test']);
        $res = $handler->handle($server, [], $body);

        $this->assert($res['code'] === 200, "非目标分支应返回 HTTP 200");
        $this->assert($res['data']['status'] === 'skipped', "非目标分支状态应为 skipped");
    }

    /**
     * 测试目标分支推送正确触发部署回调
     */
    public function testTargetBranchTriggersDeploy()
    {
        $triggered = false;
        $handler = new \app\common\library\WebhookHandler('test_secret_123', 'master', function () use (&$triggered) {
            $triggered = true;
            return "Deploy OK";
        });

        $server = ['REQUEST_METHOD' => 'POST', 'HTTP_X_GITEA_TOKEN' => 'test_secret_123'];
        $body = json_encode(['ref' => 'refs/heads/master']);
        $res = $handler->handle($server, [], $body);

        $this->assert($res['code'] === 200, "目标分支应返回 HTTP 200");
        $this->assert($triggered === true, "目标分支必须触发部署回调");
        $this->assert($res['data']['status'] === 'success', "部署状态应为 success");
        $this->assert($res['data']['output'] === 'Deploy OK', "返回内容应包含部署输出");
    }
}

$test = new WebhookTest();
$test->run();