<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Notifications\Notifiable;

class Worker extends Model
{
    use HasFactory, SoftDeletes, Notifiable;

    protected static function booted()
    {
        static::updated(function ($worker) {
            if ($worker->wasChanged('status')) {
                $oldStatus = $worker->getOriginal('status');
                $newStatus = $worker->status;

                $worker->notify(new \App\Notifications\GenericNotification(
                    "Profile Status Update",
                    "Your profile status has changed from '" . ucfirst($oldStatus) . "' to '" . ucfirst($newStatus) . "'.",
                    [
                        'type' => 'worker_status_change',
                        'worker_id' => $worker->id,
                        'old_status' => $oldStatus,
                        'new_status' => $newStatus,
                    ]
                ));
            }
        });
    }

    protected $fillable = [
        'name',
        'email',
        'phone',
        'language',
        'password',
        'nationality',
        'country',
        'city',
        'area',
        'preferred_location',
        'live_in_out',
        'age',
        'gender',
        'salary',
        'availability',
        'experience',
        'religion',
        'bio',
        'verified',
        'status',
        'api_token',
        'in_country',
        'visa_status',
        'preferred_job_type',
        'main_profession',
        'fcm_token',
    ];

    protected $hidden = [
        'password',
        'api_token', // Hide from public serialization, returned only during auth endpoints specifically
    ];

    protected $casts = [
        'verified' => 'boolean',
        'in_country' => 'boolean',
        'salary' => 'decimal:2',
        'password' => 'hashed',
    ];

    protected $appends = [
        'passport_status',
        'visa_status',
        'emirates_id_status',
        'document_expiry_days',
        'document_expiry_status',
        'visa_expiry_date',
        'rating',
        'reviews_count',
    ];

    public function getPassportStatusAttribute()
    {
        $passport = $this->documents->where('type', 'passport')->first();
        if (!$passport) {
            return 'Passport Pending';
        }
        return $this->verified ? 'Passport Verified' : 'Passport Pending';
    }

    public function getVisaStatusAttribute()
    {
        if ($this->attributes['visa_status'] ?? null) {
            $val = $this->attributes['visa_status'];
            $normalized = strtolower(trim($val));
            if (str_contains($normalized, 'residence')) {
                return 'Residence Visa';
            } elseif (str_contains($normalized, 'employment')) {
                return 'Employment Visa';
            } else {
                return 'Tourist Visa';
            }
        }
        $visa = $this->documents->where('type', 'visa')->first();
        if (!$visa) {
            return 'Residence Visa';
        }
        $ocrData = $visa->ocr_data;
        $vType = $ocrData['visa_type'] ?? null;
        if ($vType) {
            $normalized = strtolower(trim($vType));
            if (str_contains($normalized, 'residence')) {
                return 'Residence Visa';
            } elseif (str_contains($normalized, 'employment')) {
                return 'Employment Visa';
            }
        }
        return 'Tourist Visa';
    }

    public function setVisaStatusAttribute($value)
    {
        if (empty($value)) {
            $this->attributes['visa_status'] = null;
            return;
        }

        $normalized = strtolower(trim($value));
        if (str_contains($normalized, 'residence')) {
            $this->attributes['visa_status'] = 'Residence Visa';
        } elseif (str_contains($normalized, 'employment')) {
            $this->attributes['visa_status'] = 'Employment Visa';
        } else {
            $this->attributes['visa_status'] = 'Tourist Visa';
        }
    }

    public function getEmiratesIdStatusAttribute()
    {
        return $this->passport_status;
    }

    public function getVisaExpiryDateAttribute()
    {
        $visa = $this->documents->where('type', 'visa')->first();
        return $visa ? $visa->expiry_date : null;
    }

    public function getDocumentExpiryDaysAttribute()
    {
        $visa = $this->documents->where('type', 'visa')->first();
        $doc = $visa;
        if (!$doc || !$doc->expiry_date) {
            $passport = $this->documents->where('type', 'passport')->first();
            $doc = $passport;
        }

        if ($doc && $doc->expiry_date) {
            $expiry = \Carbon\Carbon::parse($doc->expiry_date);
            return (int)now()->startOfDay()->diffInDays(\Carbon\Carbon::parse($expiry)->startOfDay(), false);
        }

        return null;
    }

    public function getDocumentExpiryStatusAttribute()
    {
        $visa = $this->documents->where('type', 'visa')->first();
        $doc = $visa;
        $typeLabel = 'Visa';
        if (!$doc || !$doc->expiry_date) {
            $passport = $this->documents->where('type', 'passport')->first();
            $doc = $passport;
            $typeLabel = 'Passport';
        }

        if ($doc && $doc->expiry_date) {
            $expiry = \Carbon\Carbon::parse($doc->expiry_date);
            $days = (int)now()->startOfDay()->diffInDays(\Carbon\Carbon::parse($expiry)->startOfDay(), false);
            if ($days < 0) {
                return "$typeLabel Expired";
            }
            return "$typeLabel expires in $days days";
        }

        return 'No Documents';
    }


    public function skills()
    {
        return $this->belongsToMany(Skill::class, 'worker_skills');
    }

    public function documents()
    {
        return $this->hasMany(WorkerDocument::class);
    }

    // Relationship for job offers received
    public function offers()
    {
        return $this->hasMany(JobOffer::class, 'worker_id');
    }

    public function reviews()
    {
        return $this->hasMany(Review::class);
    }

    public function employerReviews()
    {
        return $this->hasMany(EmployerReview::class, 'worker_id');
    }

    public function getRatingAttribute()
    {
        // Prevent infinite recursion by not using relationships if we want to avoid eager load loops,
        // but typically $this->reviews is safe as long as we don't eager load recursively.
        $dbReviews = $this->reviews;
        $count = $dbReviews->count();
        return $count > 0 ? round($dbReviews->avg('rating'), 1) : 0.0;
    }

    public function getReviewsCountAttribute()
    {
        return $this->reviews()->count();
    }

    public function profileViews()
    {
        return $this->hasMany(ProfileView::class);
    }
}