<?php

namespace App\Actions\Interview;

use App\DTOs\Interview\ScheduleInterviewDto;
use App\Models\Interview;
use Carbon\Carbon;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Str;

class ScheduleInterviewAction
{
    public function __construct(
        protected SendInterviewInvitationsAction $sendInvitationsAction
    ) {}

    /**
     * Provision and schedule an interview assessment session, then trigger calendar invitations.
     */
    public function execute(ScheduleInterviewDto $dto, ?int $creatorId = null): Interview
    {
        $tempPassword = 'Pass-'.rand(100000, 999999);
        $cleanPhone = preg_replace('/[^0-9]/', '', $dto->candidatePhone);
        $cleanName = Str::slug($dto->candidateName);
        $submissionUniqueId = $cleanName.'_'.$cleanPhone.'_'.time();

        $scheduledAt = $dto->scheduledAt ? Carbon::parse($dto->scheduledAt) : now();
        $expiresAt = $scheduledAt->copy()->addHours($dto->validHours);

        $resumePath = null;
        if ($dto->resume) {
            $resumePath = $dto->resume->store('interview_resumes', 'public');
        } elseif ($dto->resumePath) {
            $resumePath = $dto->resumePath;
        }

        $interview = DB::transaction(function () use ($dto, $tempPassword, $submissionUniqueId, $scheduledAt, $expiresAt, $creatorId, $resumePath) {
            return Interview::create([
                'candidate_name' => $dto->candidateName,
                'candidate_email' => $dto->candidateEmail,
                'candidate_phone' => $dto->candidatePhone,
                'job_title' => $dto->jobTitle,
                'round' => $dto->round,
                'description' => $dto->description,
                'resume_path' => $resumePath,
                'temp_password' => $tempPassword,
                'scheduled_at' => $scheduledAt,
                'expires_at' => $expiresAt,
                'language' => $dto->language,
                'status' => 'scheduled',
                'assigned_interviewers' => $dto->assignedInterviewers,
                'proctor_logs' => [],
                'submission_unique_id' => $submissionUniqueId,
                'created_by' => $creatorId,
            ]);
        });

        // Trigger iCalendar generation & queued emails
        $this->sendInvitationsAction->execute($interview);

        return $interview;
    }
}