<?php

/* Copyright (C) 2026 Moko Consulting <hello@mokoconsulting.tech>
 * SPDX-License-Identifier: GPL-3.0-or-later
 */

declare(strict_types=1);

namespace MokoStandards\Tests\Unit;

use MokoEnterprise\CliFramework;
use PHPUnit\Framework\TestCase;

/**
 * Unit tests for CliFramework base class.
 *
 * @covers \MokoEnterprise\CliFramework
 */
class CliFrameworkTest extends TestCase
{
    // ── Exit code constants ──────────────────────────────────────────────

    public function testExitCodeConstants(): void
    {
        $this->assertSame(0, CliFramework::EXIT_SUCCESS);
        $this->assertSame(1, CliFramework::EXIT_FAILURE);
        $this->assertSame(2, CliFramework::EXIT_USAGE);
        $this->assertSame(3, CliFramework::EXIT_NOT_FOUND);
        $this->assertSame(4, CliFramework::EXIT_PERMISSION);
    }

    // ── JSON output ─────────────────────────────────────────────────────

    public function testJsonOutputProducesValidJson(): void
    {
        $tool = $this->createTool(function ($self) {
            return $self->jsonOutput('pass', ['key' => 'value'], [], ['soft warning']);
        });

        $output = $this->captureOutput($tool);

        $decoded = json_decode($output, true);
        $this->assertNotNull($decoded, 'jsonOutput must produce valid JSON');
        $this->assertSame('pass', $decoded['status']);
        $this->assertSame(0, $decoded['exit_code']);
        $this->assertSame(['key' => 'value'], $decoded['data']);
        $this->assertSame([], $decoded['errors']);
        $this->assertSame(['soft warning'], $decoded['warnings']);
        $this->assertArrayHasKey('duration_ms', $decoded['metadata']);
        $this->assertArrayHasKey('timestamp', $decoded['metadata']);
    }

    public function testJsonOutputFailStatus(): void
    {
        $tool = $this->createTool(function ($self) {
            return $self->jsonOutput('fail', null, ['something broke']);
        });

        $output = $this->captureOutput($tool);
        $decoded = json_decode($output, true);

        $this->assertSame('fail', $decoded['status']);
        $this->assertSame(1, $decoded['exit_code']);
        $this->assertSame(['something broke'], $decoded['errors']);
    }

    public function testJsonOutputCustomExitCode(): void
    {
        $tool = $this->createTool(function ($self) {
            return $self->jsonOutput('error', null, ['not found'], [], 3);
        });

        $output = $this->captureOutput($tool);
        $decoded = json_decode($output, true);

        $this->assertSame(3, $decoded['exit_code']);
    }

    // ── Table rendering ─────────────────────────────────────────────────

    public function testTableRendersHeadersAndRows(): void
    {
        $tool = $this->createTool(function ($self) {
            $self->table(['Name', 'Status'], [
                ['foo', 'ok'],
                ['bar', 'fail'],
            ]);
            return 0;
        });

        // Table output is suppressed by --quiet, so run without it.
        $_SERVER['argv'] = ['test', '--no-color'];
        ob_start();
        $tool->execute();
        $output = ob_get_clean() ?: '';

        $this->assertStringContainsString('Name', $output);
        $this->assertStringContainsString('Status', $output);
        $this->assertStringContainsString('foo', $output);
        $this->assertStringContainsString('bar', $output);
        $this->assertStringContainsString('+', $output); // separator
    }

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

    /**
     * Create a testable CliFramework subclass with a custom run() callback.
     */
    private function createTool(callable $runCallback): CliFramework
    {
        return new class ($runCallback) extends CliFramework {
            private $callback;

            public function __construct(callable $callback)
            {
                $this->callback = $callback;
                parent::__construct('test-tool', '1.0.0');
            }

            protected function configure(): void
            {
                $this->setDescription('Test tool');
            }

            protected function run(): int
            {
                return ($this->callback)($this);
            }

            // Expose protected methods for testing.
            public function jsonOutput(
                string $status,
                mixed $data = null,
                array $errors = [],
                array $warnings = [],
                int $exitCode = -1
            ): int {
                return parent::jsonOutput($status, $data, $errors, $warnings, $exitCode);
            }

            public function table(array $headers, array $rows): void
            {
                parent::table($headers, $rows);
            }
        };
    }

    /**
     * Capture stdout from a tool's run method via execute().
     *
     * The banner and other output is included, so JSON tests should
     * extract the JSON portion (last complete JSON object) from the output.
     */
    private function captureOutput(CliFramework $tool): string
    {
        // Suppress banner by simulating --quiet, but jsonOutput still writes.
        $_SERVER['argv'] = ['test', '--quiet'];
        ob_start();
        $tool->execute();
        $output = ob_get_clean() ?: '';
        // Extract JSON object from output (may have log lines before it).
        if (preg_match('/\{[\s\S]*\}\s*$/m', $output, $m)) {
            return $m[0];
        }
        return $output;
    }
}