<?php

namespace App\Models;

use App\Models\Concerns\BelongsToOwner;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasOne;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Support\Str;

class Employee extends Model
{
    use BelongsToOwner, SoftDeletes;

    protected $table = 'frontdesk_employees';

    protected $fillable = [
        'owner_ref', 'organization_id', 'branch_id', 'employee_code', 'qr_token', 'full_name',
        'department', 'email', 'phone', 'pin_hash', 'host_id', 'user_ref', 'active',
    ];

    protected $hidden = ['pin_hash'];

    protected function casts(): array
    {
        return ['active' => 'boolean'];
    }

    public function organization(): BelongsTo
    {
        return $this->belongsTo(Organization::class, 'organization_id');
    }

    public function branch(): BelongsTo
    {
        return $this->belongsTo(Branch::class, 'branch_id');
    }

    public function host(): BelongsTo
    {
        return $this->belongsTo(Host::class, 'host_id');
    }

    public function presence(): HasOne
    {
        return $this->hasOne(EmployeePresence::class, 'employee_id');
    }

    protected static function booted(): void
    {
        static::creating(function (Employee $employee) {
            if (! $employee->qr_token) {
                $employee->qr_token = Str::random(32);
            }
        });
    }

    public static function findByQrLookup(string $lookup, int $organizationId): ?self
    {
        $token = self::parseQrLookup($lookup);

        if ($token === null) {
            return null;
        }

        return self::query()
            ->where('organization_id', $organizationId)
            ->where('qr_token', $token)
            ->where('active', true)
            ->first();
    }

    public static function parseQrLookup(string $lookup): ?string
    {
        $lookup = trim($lookup);

        if ($lookup === '') {
            return null;
        }

        if (preg_match('#/eq/([A-Za-z0-9]+)#', $lookup, $matches)) {
            return $matches[1];
        }

        if (preg_match('/^[A-Za-z0-9]{16,64}$/', $lookup)) {
            return $lookup;
        }

        return null;
    }
}