<?php
/*
 * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
 *
 *  Copyright (C) 2019 - 2023 Jan Böhmer (https://github.com/jbtronics)
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as published
 *  by the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

declare(strict_types=1);

namespace App\Entity;

use App\Entity\Base\AbstractDBElement;
use App\Entity\Parts\Part;
use App\Entity\UserSystem\User;
use App\Services\InfoProviderSystem\DTOs\SearchResultDTO;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\DBAL\Types\Types;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\ORM\EntityManagerInterface;

#[ORM\Entity]
#[ORM\Table(name: 'bulk_info_provider_import_jobs')]
class BulkInfoProviderImportJob extends AbstractDBElement
{
    #[ORM\Column(type: Types::TEXT)]
    private string $name = '';

    #[ORM\Column(type: Types::JSON)]
    private array $fieldMappings = [];

    #[ORM\Column(type: Types::JSON)]
    private array $searchResults = [];

    #[ORM\Column(type: Types::STRING, length: 20, enumType: BulkImportJobStatus::class)]
    private BulkImportJobStatus $status = BulkImportJobStatus::PENDING;

    #[ORM\Column(type: Types::DATETIME_IMMUTABLE)]
    private \DateTimeImmutable $createdAt;

    #[ORM\Column(type: Types::DATETIME_IMMUTABLE, nullable: true)]
    private ?\DateTimeImmutable $completedAt = null;

    #[ORM\Column(type: Types::BOOLEAN)]
    private bool $prefetchDetails = false;

    #[ORM\ManyToOne(targetEntity: User::class)]
    #[ORM\JoinColumn(nullable: false)]
    private ?User $createdBy = null;

    /** @var Collection<int, BulkInfoProviderImportJobPart> */
    #[ORM\OneToMany(targetEntity: BulkInfoProviderImportJobPart::class, mappedBy: 'job', cascade: ['persist', 'remove'], orphanRemoval: true)]
    private Collection $jobParts;

    public function __construct()
    {
        $this->createdAt = new \DateTimeImmutable();
        $this->jobParts = new ArrayCollection();
    }

    public function getName(): string
    {
        return $this->name;
    }

    public function getDisplayNameKey(): string
    {
        return 'info_providers.bulk_import.job_name_template';
    }

    public function getDisplayNameParams(): array
    {
        return ['%count%' => $this->getPartCount()];
    }

    public function getFormattedTimestamp(): string
    {
        return $this->createdAt->format('Y-m-d H:i:s');
    }

    public function setName(string $name): self
    {
        $this->name = $name;
        return $this;
    }

    public function getJobParts(): Collection
    {
        return $this->jobParts;
    }

    public function addJobPart(BulkInfoProviderImportJobPart $jobPart): self
    {
        if (!$this->jobParts->contains($jobPart)) {
            $this->jobParts->add($jobPart);
            $jobPart->setJob($this);
        }
        return $this;
    }

    public function removeJobPart(BulkInfoProviderImportJobPart $jobPart): self
    {
        if ($this->jobParts->removeElement($jobPart)) {
            if ($jobPart->getJob() === $this) {
                $jobPart->setJob(null);
            }
        }
        return $this;
    }

    public function getPartIds(): array
    {
        return $this->jobParts->map(fn($jobPart) => $jobPart->getPart()->getId())->toArray();
    }

    public function setPartIds(array $partIds): self
    {
        // This method is kept for backward compatibility but should be replaced with addJobPart
        // Clear existing job parts
        $this->jobParts->clear();

        // Add new job parts (this would need the actual Part entities, not just IDs)
        // This is a simplified implementation - in practice, you'd want to pass Part entities
        return $this;
    }

    public function addPart(Part $part): self
    {
        $jobPart = new BulkInfoProviderImportJobPart($this, $part);
        $this->addJobPart($jobPart);
        return $this;
    }

    public function getFieldMappings(): array
    {
        return $this->fieldMappings;
    }

    public function setFieldMappings(array $fieldMappings): self
    {
        $this->fieldMappings = $fieldMappings;
        return $this;
    }

    public function getSearchResults(): array
    {
        return $this->searchResults;
    }

    public function setSearchResults(array $searchResults): self
    {
        $this->searchResults = $searchResults;
        return $this;
    }

    public function getStatus(): BulkImportJobStatus
    {
        return $this->status;
    }

    public function setStatus(BulkImportJobStatus $status): self
    {
        $this->status = $status;
        return $this;
    }

    public function getCreatedAt(): \DateTimeImmutable
    {
        return $this->createdAt;
    }

    public function getCompletedAt(): ?\DateTimeImmutable
    {
        return $this->completedAt;
    }

    public function setCompletedAt(?\DateTimeImmutable $completedAt): self
    {
        $this->completedAt = $completedAt;
        return $this;
    }

    public function isPrefetchDetails(): bool
    {
        return $this->prefetchDetails;
    }

    public function setPrefetchDetails(bool $prefetchDetails): self
    {
        $this->prefetchDetails = $prefetchDetails;
        return $this;
    }

    public function getCreatedBy(): User
    {
        return $this->createdBy;
    }

    public function setCreatedBy(User $createdBy): self
    {
        $this->createdBy = $createdBy;
        return $this;
    }

    public function getProgress(): array
    {
        $progress = [];
        foreach ($this->jobParts as $jobPart) {
            $progressData = [
                'status' => $jobPart->getStatus()->value
            ];

            // Only include completed_at if it's not null
            if ($jobPart->getCompletedAt() !== null) {
                $progressData['completed_at'] = $jobPart->getCompletedAt()->format('c');
            }

            // Only include reason if it's not null
            if ($jobPart->getReason() !== null) {
                $progressData['reason'] = $jobPart->getReason();
            }

            $progress[$jobPart->getPart()->getId()] = $progressData;
        }
        return $progress;
    }

    public function setProgress(array $progress): self
    {
        // This method is kept for backward compatibility
        // The progress is now managed through the jobParts relationship
        return $this;
    }

    public function markAsCompleted(): self
    {
        $this->status = BulkImportJobStatus::COMPLETED;
        $this->completedAt = new \DateTimeImmutable();
        return $this;
    }

    public function markAsFailed(): self
    {
        $this->status = BulkImportJobStatus::FAILED;
        $this->completedAt = new \DateTimeImmutable();
        return $this;
    }

    public function markAsStopped(): self
    {
        $this->status = BulkImportJobStatus::STOPPED;
        $this->completedAt = new \DateTimeImmutable();
        return $this;
    }

    public function markAsInProgress(): self
    {
        $this->status = BulkImportJobStatus::IN_PROGRESS;
        return $this;
    }

    public function isPending(): bool
    {
        return $this->status === BulkImportJobStatus::PENDING;
    }

    public function isInProgress(): bool
    {
        return $this->status === BulkImportJobStatus::IN_PROGRESS;
    }

    public function isCompleted(): bool
    {
        return $this->status === BulkImportJobStatus::COMPLETED;
    }

    public function isFailed(): bool
    {
        return $this->status === BulkImportJobStatus::FAILED;
    }

    public function isStopped(): bool
    {
        return $this->status === BulkImportJobStatus::STOPPED;
    }

    public function canBeStopped(): bool
    {
        return $this->status === BulkImportJobStatus::PENDING || $this->status === BulkImportJobStatus::IN_PROGRESS;
    }

    public function getPartCount(): int
    {
        return $this->jobParts->count();
    }

    public function getResultCount(): int
    {
        $count = 0;
        foreach ($this->searchResults as $partResult) {
            $count += count($partResult['search_results'] ?? []);
        }
        return $count;
    }

    public function markPartAsCompleted(int $partId): self
    {
        $jobPart = $this->findJobPartByPartId($partId);
        if ($jobPart) {
            $jobPart->markAsCompleted();
        }
        return $this;
    }

    public function markPartAsSkipped(int $partId, string $reason = ''): self
    {
        $jobPart = $this->findJobPartByPartId($partId);
        if ($jobPart) {
            $jobPart->markAsSkipped($reason);
        }
        return $this;
    }

    public function markPartAsPending(int $partId): self
    {
        $jobPart = $this->findJobPartByPartId($partId);
        if ($jobPart) {
            $jobPart->markAsPending();
        }
        return $this;
    }

    public function isPartCompleted(int $partId): bool
    {
        $jobPart = $this->findJobPartByPartId($partId);
        return $jobPart ? $jobPart->isCompleted() : false;
    }

    public function isPartSkipped(int $partId): bool
    {
        $jobPart = $this->findJobPartByPartId($partId);
        return $jobPart ? $jobPart->isSkipped() : false;
    }

    public function getCompletedPartsCount(): int
    {
        return $this->jobParts->filter(fn($jobPart) => $jobPart->isCompleted())->count();
    }

    public function getSkippedPartsCount(): int
    {
        return $this->jobParts->filter(fn($jobPart) => $jobPart->isSkipped())->count();
    }

    private function findJobPartByPartId(int $partId): ?BulkInfoProviderImportJobPart
    {
        foreach ($this->jobParts as $jobPart) {
            if ($jobPart->getPart()->getId() === $partId) {
                return $jobPart;
            }
        }
        return null;
    }

    public function getProgressPercentage(): float
    {
        $total = $this->getPartCount();
        if ($total === 0) {
            return 100.0;
        }

        $completed = $this->getCompletedPartsCount() + $this->getSkippedPartsCount();
        return round(($completed / $total) * 100, 1);
    }

    public function isAllPartsCompleted(): bool
    {
        $total = $this->getPartCount();
        if ($total === 0) {
            return true;
        }

        $completed = $this->getCompletedPartsCount() + $this->getSkippedPartsCount();
        return $completed >= $total;
    }

    /**
     * @param  array  $searchResults
     * @return array{part_id: int, search_results: array{dto: array{provider_key: string, provider_id: string, name: string, description: string, manufacturer: string, mpn: string, provider_url: string, preview_image_url: string, _source_field: string|null, _source_keyword: string|null}, localPart: int|null}[], errors: string[]}[]
     */
    public function serializeSearchResults(array $searchResults): array
    {
        $serialized = [];

        foreach ($searchResults as $partResult) {
            $partData = [
                'part_id' => $partResult['part']->getId(),
                'search_results' => [],
                'errors' => $partResult['errors'] ?? []
            ];

            foreach ($partResult['search_results'] as $result) {
                $dto = $result['dto'];
                $partData['search_results'][] = [
                    'dto' => [
                        'provider_key' => $dto->provider_key,
                        'provider_id' => $dto->provider_id,
                        'name' => $dto->name,
                        'description' => $dto->description,
                        'manufacturer' => $dto->manufacturer,
                        'mpn' => $dto->mpn,
                        'provider_url' => $dto->provider_url,
                        'preview_image_url' => $dto->preview_image_url,
                        '_source_field' => $result['source_field'] ?? null,
                        '_source_keyword' => $result['source_keyword'] ?? null,
                    ],
                    'localPart' => $result['localPart'] ? $result['localPart']->getId() : null
                ];
            }

            $serialized[] = $partData;
        }

        return $serialized;
    }

    /**
     * @param  EntityManagerInterface|null  $entityManager
     * @return array{part: Part, search_results: array{dto: SearchResultDTO, localPart: Part|null, source_field: string|null, source_keyword: string|null}[], errors: string[]}[]
     */
    public function deserializeSearchResults(?EntityManagerInterface $entityManager = null): array
    {
        if (empty($this->searchResults)) {
            return [];
        }

        $parts = $this->jobParts->map(fn($jobPart) => $jobPart->getPart())->toArray();
        $partsById = [];
        foreach ($parts as $part) {
            $partsById[$part->getId()] = $part;
        }

        $searchResults = [];

        foreach ($this->searchResults as $partData) {
            $part = $partsById[$partData['part_id']] ?? null;
            if (!$part) {
                continue;
            }

            $partResult = [
                'part' => $part,
                'search_results' => [],
                'errors' => $partData['errors'] ?? []
            ];

            foreach ($partData['search_results'] as $resultData) {
                $dtoData = $resultData['dto'];

                $dto = new SearchResultDTO(
                    provider_key: $dtoData['provider_key'],
                    provider_id: $dtoData['provider_id'],
                    name: $dtoData['name'],
                    description: $dtoData['description'],
                    manufacturer: $dtoData['manufacturer'],
                    mpn: $dtoData['mpn'],
                    provider_url: $dtoData['provider_url'],
                    preview_image_url: $dtoData['preview_image_url']
                );

                $localPart = null;
                if ($resultData['localPart'] && $entityManager) {
                    $localPart = $entityManager->getRepository(Part::class)->find($resultData['localPart']);
                }

                $partResult['search_results'][] = [
                    'dto' => $dto,
                    'localPart' => $localPart,
                    'source_field' => $dtoData['_source_field'] ?? null,
                    'source_keyword' => $dtoData['_source_keyword'] ?? null
                ];
            }

            $searchResults[] = $partResult;
        }

        return $searchResults;
    }
}