<?php

namespace App\Http\Resources\API;

use App\Models\Enums\ApprovalObjectType;
use App\Models\Enums\ObjectApprovalStatus;
use App\Models\File;
use App\Models\User;
use Illuminate\Http\Request;
use Illuminate\Http\Resources\Json\ResourceCollection;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Auth;

class ApprovalCollection extends ResourceCollection
{
    public function __construct($resource)
    {
        parent::__construct($resource);
    }

    /**
     * Transform the resource collection into an array.
     *
     * @return array<int|string, mixed>
     */
    public function toArray(Request $request): array
    {
        $groupObjects = $this->getGroupObjects();

        $containerFiles = $this->getContainerFiles();

        $items = [];
        foreach ($this->resource as $approval) {
            $usersId=make_array_list($approval->users??'');
            $approvalUsers=User::query()->whereIn('id', $usersId)->get();

            $items[] = [
                'id' => $approval->id,
                'status' => $approval->status,
                'object_type' => $approval->object_type,
                'object_id' => $approval->object_id,
                'node_level' => $approval->node_level,
                'created_by' => new UserProfileResource($approval->createdBy),
                'display_id' => $approval->display_id,
                'approval_user' => UserProfileResource::collection($approvalUsers),
                'object' => [
                    'id' => $approval->object_id,
                    'name' => data_get($groupObjects, sprintf("%s.%s", $approval->object_type, $approval->object_id)),
                ],
                'sub_objects' => $this->getSubContainerFiles($containerFiles, $approval->sub_object_ids),
                'file_copied' => $approval->file_copied,
                'copy_file_permission' => $approval->object_type == ApprovalObjectType::CONTAINER_FILE->value
                    && $approval->last_action_user_id == Auth::id()
                    && $approval->status == ObjectApprovalStatus::APPROVED->value,
            ];
        }

        return $items;
    }

    protected function getSubContainerFiles(Collection $files, ?array $fileIds = null)
    {
        if (! $fileIds) {
            return [];
        }

        $items = [];
        foreach ($fileIds as $fileId) {
            if ($files->has($fileId)) {
                $items[] = $files->get($fileId);
            }
        }

        return FileSimpleResource::collection($items);
    }

    protected function getContainerFiles(): \Illuminate\Database\Eloquent\Collection|\Illuminate\Support\Collection|array
    {
        $result = $this->resource->where("object_type", ApprovalObjectType::CONTAINER_FILE->value)->pluck("sub_object_ids");

        $files = collect([]);
        $fileIds = [];
        foreach ($result as $item) {
            if (is_array($item)) {
                $fileIds = [...$fileIds, ...$item];
            }
        }

        if (! $fileIds) {
            return $files;
        }

        return File::query()->whereIn("id", $fileIds)->get()->keyBy("id");
    }

    protected function getGroupObjects(): array
    {
        $groupObjects = [];

        foreach(collect($this->resource->items())->groupBy("object_type") as $objectType => $items) {
            $approvalObjectType = ApprovalObjectType::from($objectType);
            $groupObjects[$objectType] = $approvalObjectType
                ->modelBuilder()
                ->whereIn("id", array_column($items->toArray(), "object_id"))
                ->pluck($approvalObjectType->nameField(), "id");
        };

        return $groupObjects;
    }
}