<?php

namespace App\Modules\Taxonomy\Http;

use App\Http\Controllers\Controller;
use App\Modules\Taxonomy\Application\TaxonomyHierarchy;
use App\Modules\Taxonomy\Domain\Enums\TaxonomyStatus;
use App\Modules\Taxonomy\Domain\TaxonomyNode;
use App\Modules\Taxonomy\Domain\TaxonomyType;
use App\Modules\Taxonomy\Http\Requests\StoreTaxonomyNodeRequest;
use App\Modules\Taxonomy\Http\Requests\UpdateTaxonomyNodeRequest;
use App\Modules\Taxonomy\Policies\TaxonomyPolicy;
use App\Modules\Tenancy\Application\TenantContext;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

final class TaxonomyNodeController extends Controller
{
    public function __construct(
        private readonly TenantContext $tenant,
        private readonly TaxonomyPolicy $policy,
        private readonly TaxonomyHierarchy $hierarchy,
    ) {}

    public function index(Request $request): JsonResponse
    {
        abort_unless($this->policy->view($request->user()), 403);

        $nodes = TaxonomyNode::query()
            ->with('type:id,key,name')
            ->where('organization_id', $this->tenant->id())
            ->when($request->string('taxonomyTypeId')->isNotEmpty(), fn ($query) => $query->where('taxonomy_type_id', $request->string('taxonomyTypeId')))
            ->when($request->string('status')->isNotEmpty(), fn ($query) => $query->where('status', $request->string('status')))
            ->when($request->string('search')->isNotEmpty(), function ($query) use ($request) {
                $search = '%'.str_replace(['%', '_'], ['\\%', '\\_'], $request->string('search')).'%';
                $query->where(fn ($nested) => $nested->where('name', 'like', $search)->orWhere('code', 'like', $search));
            })
            ->orderBy('name')
            ->limit(500)
            ->get()
            ->map(fn (TaxonomyNode $node) => $this->payload($node));

        return response()->json(['data' => $nodes]);
    }

    public function store(StoreTaxonomyNodeRequest $request): JsonResponse
    {
        abort_unless($this->policy->manage($request->user()), 403);
        $data = $request->validated();
        $type = TaxonomyType::query()->where('organization_id', $this->tenant->id())->findOrFail($data['taxonomyTypeId']);
        $this->hierarchy->assertValidParent($this->tenant->id(), $type->getKey(), $data['parentId'] ?? null);

        $node = TaxonomyNode::query()->create([
            'organization_id' => $this->tenant->id(),
            'taxonomy_type_id' => $type->getKey(),
            'parent_id' => $data['parentId'] ?? null,
            'name' => $data['name'],
            'description' => $data['description'] ?? null,
            'code' => $data['code'] ?? null,
            'metadata' => $data['metadata'] ?? null,
            'status' => TaxonomyStatus::Active,
            'created_by' => $request->user()->getKey(),
        ]);

        return response()->json(['data' => $this->payload($node->load('type:id,key,name'))], 201);
    }

    public function update(UpdateTaxonomyNodeRequest $request, string $node): JsonResponse
    {
        abort_unless($this->policy->manage($request->user()), 403);
        $taxonomyNode = TaxonomyNode::query()->where('organization_id', $this->tenant->id())->findOrFail($node);
        $data = $request->validated();

        if (array_key_exists('parentId', $data)) {
            $this->hierarchy->assertValidParent($this->tenant->id(), $taxonomyNode->taxonomy_type_id, $data['parentId'], $taxonomyNode->getKey());
            $taxonomyNode->parent_id = $data['parentId'];
        }

        foreach (['name', 'description', 'code', 'status', 'metadata'] as $attribute) {
            if (array_key_exists($attribute, $data)) {
                $taxonomyNode->{$attribute} = $data[$attribute];
            }
        }

        $taxonomyNode->save();

        return response()->json(['data' => $this->payload($taxonomyNode->load('type:id,key,name'))]);
    }

    private function payload(TaxonomyNode $node): array
    {
        return [
            'id' => $node->getKey(),
            'taxonomyType' => $node->type ? ['id' => $node->type->getKey(), 'key' => $node->type->key, 'name' => $node->type->name] : null,
            'parentId' => $node->parent_id,
            'name' => $node->name,
            'description' => $node->description,
            'code' => $node->code,
            'status' => $node->status->value,
            'metadata' => $node->metadata,
        ];
    }
}