<?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 Intervention extends Model
{
    use HasFactory;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'client_id',
        'deceased_id',
        'order_giver',
        'location_id',
        'type',
        'scheduled_at',
        'duration_min',
        'status',
        'attachments_count',
        'notes',
        'created_by'
    ];

    /**
     * The attributes that should be cast.
     *
     * @var array
     */
    protected $casts = [
        'scheduled_at' => 'datetime',
        'attachments_count' => 'integer'
    ];

    /**
     * Get the client associated with the intervention.
     */
    public function client(): BelongsTo
    {
        return $this->belongsTo(Client::class);
    }

    /**
     * Get the deceased associated with the intervention.
     */
    public function deceased(): BelongsTo
    {
        return $this->belongsTo(Deceased::class);
    }

    /**
     * Get the location associated with the intervention.
     */
    public function location(): BelongsTo
    {
        return $this->belongsTo(ClientLocation::class);
    }

    /**
     * Get the practitioners assigned to the intervention.
     */
    public function practitioners(): BelongsToMany
    {
        return $this->belongsToMany(Thanatopractitioner::class, 'intervention_practitioner', 'intervention_id', 'practitioner_id')
                    ->withPivot('role', 'assigned_at')
                    ->withTimestamps();
    }

    /**
     * Alias for practitioners relationship (for backward compatibility).
     */
    public function assignedPractitioner(): BelongsToMany
    {
        return $this->practitioners();
    }

    /**
     * Get the principal practitioner assigned to the intervention.
     */
    public function principalPractitioner(): BelongsToMany
    {
        return $this->belongsToMany(Thanatopractitioner::class, 'intervention_practitioner', 'intervention_id', 'practitioner_id')
                    ->wherePivot('role', 'principal')
                    ->withPivot('role', 'assigned_at')
                    ->withTimestamps();
    }

    /**
     * Get the assistant practitioners assigned to the intervention.
     */
    public function assistantPractitioners(): BelongsToMany
    {
        return $this->belongsToMany(Thanatopractitioner::class, 'intervention_practitioner', 'intervention_id', 'practitioner_id')
                    ->wherePivot('role', 'assistant')
                    ->withPivot('role', 'assigned_at')
                    ->withTimestamps();
    }

    /**
     * Get the user who created the intervention.
     */
    public function creator(): BelongsTo
    {
        return $this->belongsTo(User::class, 'created_by');
    }

    /**
     * Get the attachments for the intervention (legacy support).
     */
    public function attachments(): HasMany
    {
        return $this->hasMany(InterventionAttachment::class);
    }

    /**
     * Get the file attachments for the intervention (polymorphic).
     */
    public function fileAttachments()
    {
        return $this->morphMany(FileAttachment::class, 'attachable')->orderBy('sort_order');
    }

    /**
     * Get the files attached to this intervention.
     */
    public function attachedFiles()
    {
        return $this->fileAttachments()->with('file');
    }

    /**
     * Get the notifications for the intervention.
     */
    public function notifications(): HasMany
    {
        return $this->hasMany(InterventionNotification::class);
    }
}