<?php

namespace App\Actions\Tickets;

use App\Enums\TicketWorklogEntryType;
use App\Models\Project;
use App\Models\Ticket;
use App\Models\TicketLink;
use App\Models\User;
use Illuminate\Support\Arr;
use Illuminate\Support\Facades\DB;

class StoreProjectTicketLink
{
    public function __construct(
        private readonly CreateTicketWorklogEntry $createTicketWorklogEntry,
    ) {}

    /**
     * @param  array{linked_ticket_id: int, ticket_link_type_id: int}  $validated
     */
    public function handle(Project $project, Ticket $ticket, User $user, array $validated): TicketLink
    {
        $linkedTicketId = Arr::get($validated, 'linked_ticket_id');
        $ticketLinkTypeId = Arr::get($validated, 'ticket_link_type_id');

        $linkedTicket = Ticket::query()
            ->where('project_id', $project->id)
            ->findOrFail($linkedTicketId);

        [$sourceTicketId, $targetTicketId] = $this->normalizeTicketPair($ticket->id, $linkedTicket->id);

        return DB::transaction(function () use ($linkedTicket, $user, $ticketLinkTypeId, $sourceTicketId, $targetTicketId, $ticket): TicketLink {
            $ticketLink = TicketLink::query()->updateOrCreate(
                [
                    'source_ticket_id' => $sourceTicketId,
                    'target_ticket_id' => $targetTicketId,
                ],
                [
                    'ticket_link_type_id' => $ticketLinkTypeId,
                ],
            );

            $ticketLink->load('ticketLinkType');

            $this->createTicketWorklogEntry->handle(
                $ticket,
                $user,
                TicketWorklogEntryType::LinkUpdated,
                "Linked {$linkedTicket->ticket_key} as {$ticketLink->ticketLinkType->label}.",
                [
                    'linked_ticket_key' => $linkedTicket->ticket_key,
                    'ticket_link_type' => $ticketLink->ticketLinkType->label,
                ],
            );

            $this->createTicketWorklogEntry->handle(
                $linkedTicket,
                $user,
                TicketWorklogEntryType::LinkUpdated,
                "Linked {$ticket->ticket_key} as {$ticketLink->ticketLinkType->label}.",
                [
                    'linked_ticket_key' => $ticket->ticket_key,
                    'ticket_link_type' => $ticketLink->ticketLinkType->label,
                ],
            );

            return $ticketLink;
        });
    }

    /**
     * @return array{0: int, 1: int}
     */
    private function normalizeTicketPair(int $firstTicketId, int $secondTicketId): array
    {
        return [
            min($firstTicketId, $secondTicketId),
            max($firstTicketId, $secondTicketId),
        ];
    }
}