<?php

namespace Modules\IndustrialEngineering\Services;

use Illuminate\Support\Facades\Log;
use Modules\IndustrialEngineering\Models\Bom;
use Modules\IndustrialEngineering\Models\ItemMaster;
use Modules\IndustrialEngineering\Models\LineRevision;
use Modules\IndustrialEngineering\Models\LineTemplate;
use Modules\IndustrialEngineering\Models\ProductPlatform;
use Modules\IndustrialEngineering\Support\CmmsAvailability;

/**
 * Establishes cross-module links automatically at creation time.
 */
class AutoIntegrationService
{
    public function __construct(
        protected ErpItemLinkService $erpItemLink,
        protected IntegrationBridgeService $integrationBridge,
        protected CodeGeneratorService $codeGenerator
    ) {
    }

    public function afterProductCreated(ProductPlatform $platform): array
    {
        $messages = [];
        $messages[] = ['type' => 'success', 'text' => __('industrialengineering::lang.auto_product_ready')];

        return $messages;
    }

    public function afterLineCreated(LineTemplate $line, LineRevision $revision, Bom $mbom): array
    {
        $messages = [];

        try {
            if (CmmsAvailability::isReady() && ! $line->maintenance_equipment_id) {
                $sync = $this->integrationBridge->syncLineBomToMaintenance($line, $mbom);
                $messages[] = ['type' => 'success', 'text' => __('industrialengineering::lang.cmms_synced_parts', [
                    'code' => $line->effectiveCode(),
                    'count' => $sync['parts_count'] ?? 0,
                ])];
            }
        } catch (\Throwable $e) {
            Log::warning('IE auto CMMS on line create: '.$e->getMessage());
            $messages[] = ['type' => 'warning', 'text' => __('industrialengineering::lang.auto_cmms_skipped')];
        }

        if (! CmmsAvailability::isReady()) {
            $messages[] = ['type' => 'warning', 'text' => __('industrialengineering::lang.cmms_not_installed')];
        }

        $messages[] = ['type' => 'info', 'text' => __('industrialengineering::lang.auto_mbom_revision_created')];

        return $messages;
    }

    public function afterItemCreated(ItemMaster $item, array $input = []): array
    {
        $messages = [];

        if (! empty($input['variation_id']) || ! empty($input['product_id'])) {
            $this->erpItemLink->linkItem($item, $input);
            $messages[] = ['type' => 'success', 'text' => __('industrialengineering::lang.auto_erp_linked')];

            return $messages;
        }

        $match = $this->erpItemLink->autoMatchProduct($item);
        if ($match['linked']) {
            $messages[] = ['type' => 'success', 'text' => $match['message']];

            return $messages;
        }

        if (in_array($item->item_type, ['part', 'consumable', 'tool'], true)) {
            $provision = app(ConnectionResolutionService::class)->provisionErpProduct($item);
            if ($provision['action'] === 'created') {
                $messages[] = ['type' => 'success', 'text' => $provision['message']];
            } else {
                $messages[] = ['type' => 'warning', 'text' => $provision['message'] ?? $match['message']];
            }

            return $messages;
        }

        $messages[] = ['type' => 'warning', 'text' => $match['message']];

        return $messages;
    }

    public function afterBomNodeCreated(ItemMaster $item, array $input = []): array
    {
        return $this->afterItemCreated($item, $input);
    }

    public function ensureLineMbom(LineTemplate $line): array
    {
        $revision = $line->revisions()->latest('id')->first();

        if (! $revision) {
            $revision = LineRevision::create([
                'business_id' => $line->business_id,
                'line_template_id' => $line->id,
                'revision_code' => 'A',
                'auto_code' => $this->codeGenerator->suggest('revision', $line->business_id),
                'name' => $line->name,
                'status' => 'draft',
            ]);
        }

        $mbom = $revision->boms()->where('bom_type', 'mbom')->first();
        if (! $mbom) {
            $bomCodes = $this->codeGenerator->resolveCode('bom', $line->business_id, null, new Bom(), 'bom_code');
            $mbom = Bom::create(array_merge($bomCodes, [
                'business_id' => $line->business_id,
                'line_revision_id' => $revision->id,
                'bom_type' => 'mbom',
                'name' => $line->name.' — MBOM',
                'revision_code' => $revision->revision_code,
                'status' => 'draft',
            ]));

            return ['revision' => $revision, 'mbom' => $mbom, 'created' => true];
        }

        return ['revision' => $revision, 'mbom' => $mbom, 'created' => false];
    }
}