<?php

declare(strict_types=1);

namespace App\Framework\Queue\Commands;

use App\Framework\Console\Attributes\ConsoleCommand;
use App\Framework\Queue\Contracts\JobChainManagerInterface;
use App\Framework\Queue\ValueObjects\JobChain;
use App\Framework\Queue\ValueObjects\ChainExecutionMode;
use App\Framework\Queue\Services\JobChainExecutionCoordinator;
use App\Framework\Queue\Services\DependencyResolutionEngine;

final readonly class JobChainCommands
{
    public function __construct(
        private JobChainManagerInterface $chainManager,
        private JobChainExecutionCoordinator $coordinator,
        private DependencyResolutionEngine $resolutionEngine
    ) {}

    #[ConsoleCommand(name: 'queue:chain:create', description: 'Create a new job chain')]
    public function createChain(
        string $chainId,
        string $name,
        string $jobIds,
        string $executionMode = 'sequential',
        bool $stopOnFailure = true
    ): void {
        $jobIdArray = array_map('trim', explode(',', $jobIds));
        $mode = ChainExecutionMode::from($executionMode);

        $jobChain = JobChain::create(
            chainId: $chainId,
            name: $name,
            jobIds: $jobIdArray,
            executionMode: $mode,
            stopOnFailure: $stopOnFailure
        );

        $this->chainManager->createChain($jobChain);

        echo "✅ Job chain created: {$name} ({$chainId})\n";
        echo "   Jobs: " . implode(' → ', $jobIdArray) . "\n";
        echo "   Mode: {$executionMode}\n";
        echo "   Stop on failure: " . ($stopOnFailure ? 'Yes' : 'No') . "\n";
    }

    #[ConsoleCommand(name: 'queue:chain:start', description: 'Start execution of a job chain')]
    public function startChain(string $chainId): void
    {
        try {
            $this->coordinator->startChainExecution($chainId);
            echo "🚀 Chain execution started: {$chainId}\n";
        } catch (\Exception $e) {
            echo "❌ Failed to start chain: {$e->getMessage()}\n";
        }
    }

    #[ConsoleCommand(name: 'queue:chain:status', description: 'Get status of a job chain')]
    public function getChainStatus(string $chainId): void
    {
        try {
            $status = $this->coordinator->getChainExecutionStatus($chainId);

            echo "📋 Chain Status: {$status['name']} ({$chainId})\n\n";

            $statusIcon = match($status['status']) {
                'pending' => '⏳',
                'running' => '🔄',
                'completed' => '✅',
                'failed' => '❌',
                default => '❓'
            };

            echo "   Status: {$statusIcon} {$status['status']}\n";
            echo "   Execution Mode: {$status['execution_mode']}\n";
            echo "   Stop on Failure: " . ($status['progress']['stop_on_failure'] ? 'Yes' : 'No') . "\n";

            if ($status['started_at']) {
                echo "   Started: {$status['started_at']}\n";
            }

            if ($status['completed_at']) {
                echo "   Completed: {$status['completed_at']}\n";
            }

            echo "\n📊 Progress:\n";
            echo "   {$status['progress']['completed_jobs']}/{$status['progress']['total_jobs']} jobs completed ({$status['progress']['percentage']}%)\n\n";

            echo "🔗 Job Status:\n";
            foreach ($status['job_statuses'] as $jobStatus) {
                $canExecute = $jobStatus['can_execute'] ? '✅' : '⏳';
                $depStatus = "{$jobStatus['dependencies_satisfied']}/{$jobStatus['dependencies_total']} deps";
                $position = $jobStatus['position'] + 1;

                echo "   {$canExecute} Job {$position}: {$jobStatus['job_id']} ({$depStatus})\n";
            }

        } catch (\Exception $e) {
            echo "❌ Failed to get chain status: {$e->getMessage()}\n";
        }
    }

    #[ConsoleCommand(name: 'queue:chain:list', description: 'List job chains by status')]
    public function listChains(string $status = 'all'): void
    {
        $chains = match($status) {
            'active' => $this->chainManager->getActiveChains(),
            'pending' => $this->chainManager->getPendingChains(),
            default => array_merge(
                $this->chainManager->getPendingChains(),
                $this->chainManager->getActiveChains()
            )
        };

        echo "📋 Job Chains ({$status}):\n\n";

        if (empty($chains)) {
            echo "   No chains found\n";
            return;
        }

        foreach ($chains as $chain) {
            $statusIcon = match($chain->status) {
                'pending' => '⏳',
                'running' => '🔄',
                'completed' => '✅',
                'failed' => '❌',
                default => '❓'
            };

            $jobCount = count($chain->getJobIdsArray());
            echo "   {$statusIcon} {$chain->name} ({$chain->chainId})\n";
            echo "      Status: {$chain->status} | Jobs: {$jobCount} | Mode: {$chain->executionMode}\n";

            if ($chain->startedAt) {
                echo "      Started: {$chain->startedAt}\n";
            }

            echo "\n";
        }
    }

    #[ConsoleCommand(name: 'queue:chain:analyze', description: 'Analyze job chains for a specific job')]
    public function analyzeChains(string $jobId): void
    {
        $analysis = $this->resolutionEngine->analyzeChains($jobId);

        echo "🔍 Chain Analysis for job: {$jobId}\n\n";

        if (empty($analysis['chains'])) {
            echo "   Job is not part of any chains\n";
            return;
        }

        echo "📊 Total chains: {$analysis['total_chains']}\n\n";

        foreach ($analysis['chains'] as $chain) {
            $statusIcon = match($chain['status']) {
                'pending' => '⏳',
                'running' => '🔄',
                'completed' => '✅',
                'failed' => '❌',
                default => '❓'
            };

            echo "🔗 {$statusIcon} {$chain['name']} ({$chain['chain_id']})\n";
            echo "   Status: {$chain['status']}\n";
            echo "   Mode: {$chain['execution_mode']}\n";
            $position = $chain['job_position'] + 1;
            echo "   Position: {$position}/{$chain['total_jobs']}\n";

            if ($chain['next_job_after_current']) {
                echo "   Next job: {$chain['next_job_after_current']}\n";
            }

            echo "   Progress: {$chain['progress']['completed_jobs']}/{$chain['progress']['total_jobs']} ({$chain['progress']['percentage']}%)\n\n";
        }
    }

    #[ConsoleCommand(name: 'queue:chain:delete', description: 'Delete a job chain')]
    public function deleteChain(string $chainId): void
    {
        $chain = $this->chainManager->getChain($chainId);

        if (!$chain) {
            echo "❌ Chain not found: {$chainId}\n";
            return;
        }

        if ($chain->isRunning()) {
            echo "❌ Cannot delete running chain. Chain must be completed or failed.\n";
            return;
        }

        $this->chainManager->deleteChain($chainId);
        echo "✅ Chain deleted: {$chainId}\n";
    }

    #[ConsoleCommand(name: 'queue:chain:cleanup', description: 'Clean up old completed chains')]
    public function cleanupOldChains(int $olderThanDays = 30): void
    {
        $deletedCount = $this->chainManager->cleanupOldChains($olderThanDays);

        echo "🧹 Cleaned up old chains\n";
        echo "   Deleted: {$deletedCount} completed/failed chains older than {$olderThanDays} days\n";
    }

    #[ConsoleCommand(name: 'queue:chain:progress', description: 'Show detailed progress of a chain')]
    public function showProgress(string $chainId): void
    {
        try {
            $progress = $this->chainManager->getChainProgress($chainId);

            echo "📊 Chain Progress: {$progress['name']} ({$chainId})\n\n";

            $statusIcon = match($progress['status']) {
                'pending' => '⏳',
                'running' => '🔄',
                'completed' => '✅',
                'failed' => '❌',
                default => '❓'
            };

            echo "   Status: {$statusIcon} {$progress['status']}\n";
            echo "   Mode: {$progress['execution_mode']}\n";
            echo "   Progress: {$progress['completed_jobs']}/{$progress['total_jobs']} jobs ({$progress['percentage']}%)\n";

            if ($progress['started_at']) {
                echo "   Started: {$progress['started_at']}\n";
            }

            if ($progress['completed_at']) {
                echo "   Completed: {$progress['completed_at']}\n";
            }

            // Progress bar
            $barLength = 30;
            $filledLength = (int) (($progress['percentage'] / 100) * $barLength);
            $bar = str_repeat('█', $filledLength) . str_repeat('░', $barLength - $filledLength);
            echo "\n   [{$bar}] {$progress['percentage']}%\n";

        } catch (\Exception $e) {
            echo "❌ Failed to get chain progress: {$e->getMessage()}\n";
        }
    }
}