<?php

namespace App\DTOs\Interview;

use App\Http\Requests\Interview\StoreInterviewRequest;
use Carbon\Carbon;
use Illuminate\Contracts\Support\Arrayable;
use Illuminate\Http\UploadedFile;
use JsonSerializable;

class ScheduleInterviewDto implements Arrayable, JsonSerializable
{
    /**
     * @param  array<int>  $assignedInterviewers
     */
    public function __construct(
        public readonly string $candidateName,
        public readonly string $candidateEmail,
        public readonly string $candidatePhone,
        public readonly string $jobTitle,
        public readonly string $round,
        public readonly ?Carbon $scheduledAt,
        public readonly int $validHours,
        public readonly string $language,
        public readonly array $assignedInterviewers = [],
        public readonly ?string $description = null,
        public readonly ?UploadedFile $resume = null,
        public readonly ?string $resumePath = null,
    ) {}

    public static function fromRequest(StoreInterviewRequest $request): self
    {
        $scheduledAt = $request->filled('scheduled_at')
            ? Carbon::parse($request->input('scheduled_at'))
            : now();

        return new self(
            candidateName: trim($request->input('candidate_name')),
            candidateEmail: strtolower(trim($request->input('candidate_email'))),
            candidatePhone: trim($request->input('candidate_phone')),
            jobTitle: trim($request->input('job_title', 'Software Engineer')),
            round: trim($request->input('round', 'R1')) ?: 'R1',
            scheduledAt: $scheduledAt,
            validHours: (int) $request->input('valid_hours', 2),
            language: $request->input('language', 'python'),
            assignedInterviewers: array_map('intval', (array) $request->input('assigned_interviewers', [])),
            description: $request->filled('description') ? trim($request->input('description')) : null,
            resume: $request->file('resume'),
        );
    }

    public static function fromArray(array $data): self
    {
        $scheduledAt = isset($data['scheduled_at'])
            ? ($data['scheduled_at'] instanceof Carbon ? $data['scheduled_at'] : Carbon::parse($data['scheduled_at']))
            : now();

        return new self(
            candidateName: trim($data['candidate_name'] ?? ''),
            candidateEmail: strtolower(trim($data['candidate_email'] ?? '')),
            candidatePhone: trim($data['candidate_phone'] ?? ''),
            jobTitle: trim($data['job_title'] ?? 'Software Engineer'),
            round: trim($data['round'] ?? 'R1') ?: 'R1',
            scheduledAt: $scheduledAt,
            validHours: (int) ($data['valid_hours'] ?? 2),
            language: $data['language'] ?? 'python',
            assignedInterviewers: array_map('intval', (array) ($data['assigned_interviewers'] ?? [])),
            description: isset($data['description']) && filled($data['description']) ? trim($data['description']) : null,
        );
    }

    public function toArray(): array
    {
        return [
            'candidate_name' => $this->candidateName,
            'candidate_email' => $this->candidateEmail,
            'candidate_phone' => $this->candidatePhone,
            'job_title' => $this->jobTitle,
            'round' => $this->round,
            'scheduled_at' => $this->scheduledAt?->toDateTimeString(),
            'valid_hours' => $this->validHours,
            'language' => $this->language,
            'assigned_interviewers' => $this->assignedInterviewers,
            'description' => $this->description,
        ];
    }

    public function jsonSerialize(): array
    {
        return $this->toArray();
    }
}