<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\Relations\HasMany;

class Thanatopractitioner extends Model
{
    use HasFactory;

    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [
        'employee_id',
        'diploma_number',
        'diploma_date',
        'authorization_number',
        'authorization_issue_date',
        'authorization_expiry_date',
        'notes',
    ];

    /**
     * The attributes that should be cast.
     *
     * @var array<string, string>
     */
    protected $casts = [
        'diploma_date' => 'date',
        'authorization_issue_date' => 'date',
        'authorization_expiry_date' => 'date',
        'created_at' => 'datetime',
        'updated_at' => 'datetime',
    ];

    /**
     * Get the employee that owns the thanatopractitioner.
     */
    public function employee(): BelongsTo
    {
        return $this->belongsTo(Employee::class);
    }

    /**
     * Get all documents associated with the thanatopractitioner.
     */
    public function documents(): HasMany
    {
        return $this->hasMany(PractitionerDocument::class, 'practitioner_id');
    }

    /**
     * Get the interventions assigned to the thanatopractitioner.
     */
    public function interventions(): BelongsToMany
    {
        return $this->belongsToMany(Intervention::class, 'intervention_practitioner')
                    ->withPivot('role', 'assigned_at')
                    ->withTimestamps();
    }

    /**
     * Get the interventions where this practitioner is the principal.
     */
    public function principalInterventions(): BelongsToMany
    {
        return $this->belongsToMany(Intervention::class, 'intervention_practitioner')
                    ->wherePivot('role', 'principal')
                    ->withPivot('role', 'assigned_at')
                    ->withTimestamps();
    }

    /**
     * Get the interventions where this practitioner is an assistant.
     */
    public function assistantInterventions(): BelongsToMany
    {
        return $this->belongsToMany(Intervention::class, 'intervention_practitioner')
                    ->wherePivot('role', 'assistant')
                    ->withPivot('role', 'assigned_at')
                    ->withTimestamps();
    }

    /**
     * Scope a query to only include practitioners with valid authorization.
     */
    public function scopeWithValidAuthorization($query)
    {
        return $query->where('authorization_expiry_date', '>=', now());
    }

    /**
     * Scope a query to only include practitioners with expired authorization.
     */
    public function scopeWithExpiredAuthorization($query)
    {
        return $query->where('authorization_expiry_date', '<', now());
    }

    /**
     * Check if the authorization is still valid.
     */
    public function getIsAuthorizationValidAttribute(): bool
    {
        if (!$this->authorization_expiry_date) {
            return false;
        }

        return $this->authorization_expiry_date >= now();
    }
}