<?php

declare(strict_types=1);

namespace App\Jobs;

use App\Models\ManagedEnvironment;
use App\Models\OperationRun;
use App\Models\ReviewPack;
use App\Models\StoredReport;
use App\Models\User;
use App\Services\Audit\WorkspaceAuditLogger;
use App\Services\OperationRunService;
use App\Services\ReviewPacks\ManagementReportPdfRenderer;
use App\Support\Audit\AuditActionId;
use App\Support\OperationRunOutcome;
use App\Support\OperationRunStatus;
use App\Support\ReviewPacks\ManagementReportPdfPayloadBuilder;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Queue\Queueable;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Storage;
use InvalidArgumentException;
use Throwable;

class GenerateManagementReportPdfJob implements ShouldQueue
{
    use Queueable;

    public int $timeout = 240;

    public bool $failOnTimeout = true;

    public function __construct(
        public int $storedReportId,
        public int $operationRunId,
    ) {}

    public function handle(
        OperationRunService $operationRunService,
        ManagementReportPdfPayloadBuilder $payloadBuilder,
        ManagementReportPdfRenderer $renderer,
        WorkspaceAuditLogger $auditLogger,
    ): void {
        $report = StoredReport::query()
            ->with(['tenant.workspace', 'sourceReviewPack.environmentReview.sections', 'operationRun', 'generatedBy'])
            ->find($this->storedReportId);
        $operationRun = OperationRun::query()->find($this->operationRunId);

        if (! $report instanceof StoredReport || ! $operationRun instanceof OperationRun) {
            Log::warning('GenerateManagementReportPdfJob: missing records', [
                'stored_report_id' => $this->storedReportId,
                'operation_run_id' => $this->operationRunId,
            ]);

            return;
        }

        $tenant = $report->tenant;
        $reviewPack = $report->sourceReviewPack;

        if (! $tenant instanceof ManagedEnvironment || ! $reviewPack instanceof ReviewPack) {
            $this->markFailed($report, $operationRun, $operationRunService, $auditLogger, 'source_missing', 'Management PDF source records are unavailable.');

            return;
        }

        $operationRun = $operationRunService->updateRun($operationRun, OperationRunStatus::Running->value, OperationRunOutcome::Pending->value, [
            'total' => 1,
            'processed' => 0,
            'succeeded' => 0,
            'failed' => 0,
        ]);

        $report->update([
            'status' => StoredReport::STATUS_GENERATING,
            'payload' => array_replace_recursive(is_array($report->payload) ? $report->payload : [], [
                'state' => StoredReport::STATUS_GENERATING,
                'started_at' => now()->toIso8601String(),
            ]),
        ]);

        try {
            try {
                $payload = $payloadBuilder->build($reviewPack);
            } catch (InvalidArgumentException $exception) {
                $this->markBlocked(
                    report: $report,
                    operationRun: $operationRun,
                    operationRunService: $operationRunService,
                    auditLogger: $auditLogger,
                    code: $this->blockedReasonCode($reviewPack, $exception),
                    message: $exception->getMessage(),
                );

                return;
            }

            $result = $renderer->render($payload, $this->correlationId($report, $operationRun));

            if ($result->failed() || $result->pdfBytes === null) {
                $this->markFailed(
                    report: $report,
                    operationRun: $operationRun,
                    operationRunService: $operationRunService,
                    auditLogger: $auditLogger,
                    code: $result->failureCode ?? 'renderer_failed',
                    message: $result->safeMessage ?? 'PDF renderer failed to create the document.',
                    payload: $payload,
                );

                return;
            }

            $this->storePdf($report, $operationRun, $tenant, $payload, $result->pdfBytes, $operationRunService, $auditLogger);
        } catch (Throwable $exception) {
            $this->markFailed(
                report: $report,
                operationRun: $operationRun,
                operationRunService: $operationRunService,
                auditLogger: $auditLogger,
                code: 'generation_exception',
                message: 'Management report PDF generation failed.',
            );

            throw $exception;
        }
    }

    /**
     * @param  array<string, mixed>  $payload
     */
    private function storePdf(
        StoredReport $report,
        OperationRun $operationRun,
        ManagedEnvironment $tenant,
        array $payload,
        string $pdfBytes,
        OperationRunService $operationRunService,
        WorkspaceAuditLogger $auditLogger,
    ): void {
        $filePath = sprintf(
            'management-reports/%s/review-pack-%d-%s-%d.pdf',
            $this->safePathSegment((string) ($tenant->external_id ?: $tenant->getKey())),
            (int) $report->source_review_pack_id,
            now()->format('YmdHis'),
            (int) $report->getKey(),
        );

        try {
            $stored = Storage::disk('exports')->put($filePath, $pdfBytes);
        } catch (Throwable $exception) {
            $this->markFailed(
                report: $report,
                operationRun: $operationRun,
                operationRunService: $operationRunService,
                auditLogger: $auditLogger,
                code: 'storage_failed',
                message: 'Management report PDF storage failed.',
                payload: $payload,
            );

            throw $exception;
        }

        if (! $stored) {
            $this->markFailed(
                report: $report,
                operationRun: $operationRun,
                operationRunService: $operationRunService,
                auditLogger: $auditLogger,
                code: 'storage_failed',
                message: 'Management report PDF storage failed.',
                payload: $payload,
            );

            return;
        }

        $sha256 = hash('sha256', $pdfBytes);

        $report->update([
            'status' => StoredReport::STATUS_READY,
            'payload' => array_replace_recursive($payload, [
                'state' => StoredReport::STATUS_READY,
                'artifact' => [
                    'file_disk' => 'exports',
                    'file_path' => $filePath,
                    'file_size' => strlen($pdfBytes),
                    'sha256' => $sha256,
                ],
            ]),
            'file_disk' => 'exports',
            'file_path' => $filePath,
            'file_size' => strlen($pdfBytes),
            'sha256' => $sha256,
            'generated_at' => now(),
        ]);

        $operationRunService->updateRun(
            $operationRun,
            status: OperationRunStatus::Completed->value,
            outcome: OperationRunOutcome::Succeeded->value,
            summaryCounts: [
                'total' => 1,
                'processed' => 1,
                'succeeded' => 1,
                'failed' => 0,
                'report_created' => 1,
            ],
        );

        $this->audit($report->refresh(), $operationRun, $auditLogger, AuditActionId::ManagementReportPdfGenerated, 'success', 'Management report PDF generated.');
    }

    /**
     * @param  array<string, mixed>|null  $payload
     */
    private function markFailed(
        StoredReport $report,
        OperationRun $operationRun,
        OperationRunService $operationRunService,
        WorkspaceAuditLogger $auditLogger,
        string $code,
        string $message,
        ?array $payload = null,
    ): void {
        $report->update([
            'status' => StoredReport::STATUS_FAILED,
            'payload' => array_replace_recursive($payload ?? (is_array($report->payload) ? $report->payload : []), [
                'state' => StoredReport::STATUS_FAILED,
                'failure' => [
                    'code' => $code,
                    'message' => $message,
                ],
            ]),
        ]);

        $operationRunService->updateRun(
            $operationRun,
            status: OperationRunStatus::Completed->value,
            outcome: OperationRunOutcome::Failed->value,
            summaryCounts: [
                'total' => 1,
                'processed' => 1,
                'succeeded' => 0,
                'failed' => 1,
            ],
            failures: [
                [
                    'code' => 'management_report_pdf.'.$code,
                    'message' => $message,
                ],
            ],
        );

        $this->audit($report->refresh(), $operationRun, $auditLogger, AuditActionId::ManagementReportPdfGenerationFailed, 'failed', $message, [
            'failure_code' => $code,
        ]);
    }

    private function blockedReasonCode(ReviewPack $reviewPack, InvalidArgumentException $exception): string
    {
        try {
            $decision = ManagementReportPdfPayloadBuilder::customerExecutiveDisclosureDecision($reviewPack);

            if ((bool) ($decision['is_blocked'] ?? false) && filled($decision['reason_code'] ?? null)) {
                return (string) $decision['reason_code'];
            }
        } catch (Throwable) {
            // Fall through to message-based source blockers below.
        }

        $message = $exception->getMessage();

        return match (true) {
            str_contains($message, 'current review pack') => 'review_pack_not_current',
            str_contains($message, 'tenant, workspace, and released review') => 'source_missing',
            str_contains($message, 'customer executive profile') => 'management_report_pdf_profile_invalid',
            str_contains($message, 'disclosure policy') => 'disclosure_blocked',
            default => 'generation_blocked',
        };
    }

    /**
     * @param  array<string, mixed>|null  $payload
     */
    private function markBlocked(
        StoredReport $report,
        OperationRun $operationRun,
        OperationRunService $operationRunService,
        WorkspaceAuditLogger $auditLogger,
        string $code,
        string $message,
        ?array $payload = null,
    ): void {
        $report->update([
            'status' => StoredReport::STATUS_FAILED,
            'payload' => array_replace_recursive($payload ?? (is_array($report->payload) ? $report->payload : []), [
                'state' => StoredReport::STATUS_FAILED,
                'blocked' => true,
                'failure' => [
                    'code' => $code,
                    'message' => $message,
                ],
            ]),
        ]);

        $operationRunService->updateRun(
            $operationRun,
            status: OperationRunStatus::Completed->value,
            outcome: OperationRunOutcome::Blocked->value,
            summaryCounts: [
                'total' => 1,
                'processed' => 1,
                'succeeded' => 0,
                'failed' => 0,
            ],
            failures: [
                [
                    'code' => 'management_report_pdf.'.$code,
                    'reason_code' => $code,
                    'message' => $message,
                ],
            ],
        );

        $this->audit($report->refresh(), $operationRun, $auditLogger, AuditActionId::ManagementReportPdfGenerationBlocked, 'blocked', $message, [
            'failure_code' => $code,
            'reason_code' => $code,
        ]);
    }

    /**
     * @param  array<string, mixed>  $extraContext
     */
    private function audit(
        StoredReport $report,
        OperationRun $operationRun,
        WorkspaceAuditLogger $auditLogger,
        AuditActionId $action,
        string $status,
        string $summary,
        array $extraContext = [],
    ): void {
        $tenant = $report->tenant;

        if (! $tenant instanceof ManagedEnvironment) {
            return;
        }

        $actor = $report->generatedBy;

        $auditLogger->log(
            workspace: $tenant->workspace,
            action: $action,
            context: array_replace_recursive([
                'metadata' => [
                    'stored_report_id' => (int) $report->getKey(),
                    'review_pack_id' => $report->source_review_pack_id !== null ? (int) $report->source_review_pack_id : null,
                    'environment_review_id' => $report->source_environment_review_id !== null ? (int) $report->source_environment_review_id : null,
                    'profile' => (string) $report->profile,
                    'sha256' => $report->sha256,
                ],
            ], $extraContext),
            actor: $actor instanceof User ? $actor : null,
            status: $status,
            resourceType: 'stored_report',
            resourceId: (string) $report->getKey(),
            targetLabel: sprintf('Management report PDF #%d', (int) $report->getKey()),
            summary: $summary,
            operationRunId: (int) $operationRun->getKey(),
            tenant: $tenant,
        );
    }

    private function correlationId(StoredReport $report, OperationRun $operationRun): string
    {
        return sprintf('management-report-pdf-%d-run-%d', (int) $report->getKey(), (int) $operationRun->getKey());
    }

    private function safePathSegment(string $value): string
    {
        $value = preg_replace('/[^A-Za-z0-9._-]+/', '-', trim($value)) ?? '';

        return trim($value, '-') !== '' ? trim($value, '-') : 'unknown';
    }
}