<?php

namespace Modules\IndustrialEngineering\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Routing\Controller;
use InvalidArgumentException;
use Modules\IndustrialEngineering\Http\Controllers\Concerns\AuthorizesIndustrialEngineering;
use Modules\IndustrialEngineering\Http\Controllers\Concerns\ResolvesIeCodes;
use Modules\IndustrialEngineering\Models\Bom;
use Modules\IndustrialEngineering\Models\BomLine;
use Modules\IndustrialEngineering\Models\BomStructureTemplate;
use Modules\IndustrialEngineering\Models\ItemMaster;
use Modules\IndustrialEngineering\Services\BomTemplateService;
use Modules\IndustrialEngineering\Services\BomTreeService;
use Modules\IndustrialEngineering\Services\ErpItemLinkService;
use Modules\IndustrialEngineering\Services\AutoIntegrationService;

class BomStructureController extends Controller
{
    use AuthorizesIndustrialEngineering;
    use ResolvesIeCodes;

    public function __construct(
        protected BomTreeService $bomTreeService,
        protected BomTemplateService $bomTemplateService,
        protected ErpItemLinkService $erpItemLink,
        protected AutoIntegrationService $autoIntegration
    ) {
    }

    public function tree($bomId)
    {
        $this->authorizeIe('ie.bom.view');
        $bom = Bom::forBusiness($this->businessId())->findOrFail($bomId);

        return response()->json([
            'success' => true,
            'tree' => $this->bomTreeService->buildEditorTree($bom),
        ]);
    }

    public function storeNode(Request $request, $bomId)
    {
        $this->authorizeIe('ie.bom.create');
        $bom = Bom::forBusiness($this->businessId())->findOrFail($bomId);

        $data = $request->validate([
            'parent_line_id' => 'nullable|exists:ie_bom_lines,id',
            'item_master_id' => 'nullable|exists:ie_item_masters,id',
            'item_code' => 'nullable|string|max:100',
            'name' => 'required_without:item_master_id|string|max:255',
            'item_type' => 'nullable|string',
            'quantity' => 'nullable|numeric|min:0.0001',
            'position_code' => 'nullable|string|max:100',
            'find_number' => 'nullable|string|max:100',
            'variation_id' => 'nullable|integer',
            'product_id' => 'nullable|integer',
            'standard_cost' => 'nullable|numeric|min:0',
            'is_serviceable' => 'nullable|boolean',
            'notes' => 'nullable|string',
        ]);

        try {
            $line = $this->bomTreeService->addNode(
                $bom,
                $data['parent_line_id'] ?? null,
                $data
            );
        } catch (InvalidArgumentException $e) {
            return response()->json([
                'success' => false,
                'msg' => $e->getMessage(),
            ], 422);
        }

        $integrationMessages = $this->autoIntegration->afterBomNodeCreated($line->itemMaster, $data);

        return response()->json([
            'success' => true,
            'msg' => __('industrialengineering::lang.node_added'),
            'integration_messages' => $integrationMessages,
            'node' => $this->bomTreeService->lineToEditorNode($line->load(['itemMaster', 'children'])),
        ]);
    }

    public function updateNode(Request $request, $lineId)
    {
        $this->authorizeIe('ie.bom.create');
        $line = BomLine::forBusiness($this->businessId())->findOrFail($lineId);

        $data = $request->validate([
            'quantity' => 'nullable|numeric|min:0.0001',
            'position_code' => 'nullable|string|max:100',
            'find_number' => 'nullable|string|max:100',
            'standard_cost' => 'nullable|numeric|min:0',
            'is_serviceable' => 'nullable|boolean',
            'notes' => 'nullable|string',
            'variation_id' => 'nullable|integer',
            'product_id' => 'nullable|integer',
        ]);

        $line = $this->bomTreeService->updateNode($line, $data);

        return response()->json([
            'success' => true,
            'msg' => __('industrialengineering::lang.saved'),
            'node' => $this->bomTreeService->lineToEditorNode($line),
        ]);
    }

    public function move(Request $request, $bomId)
    {
        $this->authorizeIe('ie.bom.create');
        $bom = Bom::forBusiness($this->businessId())->findOrFail($bomId);

        $data = $request->validate([
            'nestable' => 'required|array',
        ]);

        try {
            $this->bomTreeService->applyNestable($bom, $data['nestable']);
        } catch (InvalidArgumentException $e) {
            return response()->json([
                'success' => false,
                'msg' => $e->getMessage(),
            ], 422);
        }

        return response()->json([
            'success' => true,
            'msg' => __('industrialengineering::lang.tree_saved'),
            'tree' => $this->bomTreeService->buildEditorTree($bom->fresh()),
        ]);
    }

    public function destroyNode($lineId)
    {
        $this->authorizeIe('ie.bom.create');
        $line = BomLine::forBusiness($this->businessId())->findOrFail($lineId);
        $this->bomTreeService->deleteNode($line);

        return response()->json([
            'success' => true,
            'msg' => __('industrialengineering::lang.node_deleted'),
        ]);
    }

    public function duplicateBranch(Request $request, $bomId)
    {
        $this->authorizeIe('ie.bom.create');
        $bom = Bom::forBusiness($this->businessId())->findOrFail($bomId);

        $data = $request->validate([
            'source_line_id' => 'required|exists:ie_bom_lines,id',
            'target_parent_line_id' => 'nullable|exists:ie_bom_lines,id',
        ]);

        $sourceLine = BomLine::forBusiness($this->businessId())->findOrFail($data['source_line_id']);

        try {
            $result = $this->bomTreeService->duplicateSubtree(
                $bom,
                $sourceLine,
                $data['target_parent_line_id'] ?? null
            );
        } catch (InvalidArgumentException $e) {
            return response()->json(['success' => false, 'msg' => $e->getMessage()], 422);
        }

        return response()->json([
            'success' => true,
            'msg' => __('industrialengineering::lang.branch_pasted', ['count' => $result['created_count']]),
            'created_count' => $result['created_count'],
            'tree' => $this->bomTreeService->buildEditorTree($bom->fresh()),
        ]);
    }

    public function listTemplates($bomId)
    {
        $this->authorizeIe('ie.bom.view');
        Bom::forBusiness($this->businessId())->findOrFail($bomId);

        return response()->json([
            'success' => true,
            'templates' => $this->bomTemplateService->listForBusiness($this->businessId()),
        ]);
    }

    public function applyTemplate(Request $request, $bomId)
    {
        $this->authorizeIe('ie.bom.create');
        $bom = Bom::forBusiness($this->businessId())->findOrFail($bomId);

        $data = $request->validate([
            'parent_line_id' => 'nullable|exists:ie_bom_lines,id',
            'template_key' => 'required|string|max:100',
        ]);

        try {
            $result = $this->bomTemplateService->apply(
                $bom,
                $data['parent_line_id'] ?? null,
                $data['template_key']
            );
        } catch (InvalidArgumentException $e) {
            return response()->json(['success' => false, 'msg' => $e->getMessage()], 422);
        }

        return response()->json([
            'success' => true,
            'msg' => __('industrialengineering::lang.bulk_nodes_added', ['count' => $result['created_count']]),
            'created_count' => $result['created_count'],
            'tree' => $this->bomTreeService->buildEditorTree($bom->fresh()),
        ]);
    }

    public function bulkAddNodes(Request $request, $bomId)
    {
        $this->authorizeIe('ie.bom.create');
        $bom = Bom::forBusiness($this->businessId())->findOrFail($bomId);

        $data = $request->validate([
            'parent_line_id' => 'nullable|exists:ie_bom_lines,id',
            'nodes' => 'required|array|min:1',
            'nodes.*.name' => 'required|string|max:255',
            'nodes.*.item_type' => 'nullable|string',
            'nodes.*.quantity' => 'nullable|numeric|min:0.0001',
            'nodes.*.position_code' => 'nullable|string|max:100',
            'nodes.*.find_number' => 'nullable|string|max:100',
            'nodes.*.children' => 'nullable|array',
        ]);

        try {
            $result = $this->bomTemplateService->bulkAddNodes(
                $bom,
                $data['parent_line_id'] ?? null,
                $data['nodes']
            );
        } catch (InvalidArgumentException $e) {
            return response()->json(['success' => false, 'msg' => $e->getMessage()], 422);
        }

        return response()->json([
            'success' => true,
            'msg' => __('industrialengineering::lang.bulk_nodes_added', ['count' => $result['created_count']]),
            'created_count' => $result['created_count'],
            'tree' => $this->bomTreeService->buildEditorTree($bom->fresh()),
        ]);
    }

    public function saveTemplate(Request $request)
    {
        $this->authorizeIe('ie.bom.create');

        $data = $request->validate([
            'bom_line_id' => 'required|exists:ie_bom_lines,id',
            'name' => 'required|string|max:255',
            'description' => 'nullable|string|max:1000',
            'category' => 'nullable|string|max:50',
        ]);

        $line = BomLine::forBusiness($this->businessId())->findOrFail($data['bom_line_id']);
        $template = $this->bomTemplateService->saveFromBomLine(
            $line,
            $data['name'],
            $data['description'] ?? null,
            $data['category'] ?? 'custom'
        );

        return response()->json([
            'success' => true,
            'msg' => __('industrialengineering::lang.template_saved'),
            'template' => [
                'id' => $template->id,
                'key' => 'saved:'.$template->id,
                'name' => $template->name,
            ],
        ]);
    }

    public function destroyTemplate($id)
    {
        $this->authorizeIe('ie.bom.create');
        $template = BomStructureTemplate::forBusiness($this->businessId())->findOrFail($id);
        $template->delete();

        return response()->json([
            'success' => true,
            'msg' => __('industrialengineering::lang.template_deleted'),
        ]);
    }

    public function quickCreateItem(Request $request)
    {
        $this->authorizeIe('ie.items.create');

        $data = $request->validate([
            'item_code' => 'nullable|string|max:100',
            'name' => 'required|string|max:255',
            'item_type' => 'required|string',
            'variation_id' => 'nullable|integer',
            'product_id' => 'nullable|integer',
            'standard_cost' => 'nullable|numeric|min:0',
        ]);

        $codes = $this->resolveCodes('item', $data['item_code'] ?? null, new ItemMaster(), 'item_code');
        $item = ItemMaster::create(array_merge($data, $codes, [
            'business_id' => $this->businessId(),
            'is_serviceable' => true,
        ]));
        $this->erpItemLink->linkItem($item, $data);

        return response()->json([
            'success' => true,
            'item' => [
                'id' => $item->id,
                'item_code' => $item->item_code,
                'name' => $item->name,
                'item_type' => $item->item_type,
            ],
        ]);
    }
}