<?php

namespace App\Models;

use App\Models\Concerns\BelongsToCompany;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\MorphTo;

class Document extends Model
{
    use BelongsToCompany;
    use HasFactory;

    protected $table = 'documents';

    protected $fillable = [
        'company_id', 'name', 'type', 'path',
        'documentable_type', 'documentable_id', 'uploaded_by',
        'category', 'document_number', 'issued_on', 'expires_on',
        'status', 'visibility', 'is_mandatory', 'notes',
    ];

    protected $casts = [
        'issued_on' => 'date',
        'expires_on' => 'date',
        'is_mandatory' => 'boolean',
    ];

    public function documentable(): MorphTo
    {
        return $this->morphTo();
    }

    public function uploader(): BelongsTo
    {
        return $this->belongsTo(User::class, 'uploaded_by');
    }

    public function scopeSearch(Builder $query, ?string $term): Builder
    {
        $term = trim((string) $term);
        if ($term === '') {
            return $query;
        }

        return $query->where(function (Builder $inner) use ($term): void {
            $inner->where('name', 'like', "%{$term}%")
                ->orWhere('document_number', 'like', "%{$term}%")
                ->orWhereHas('uploader', fn (Builder $q) => $q->where('name', 'like', "%{$term}%"));
        });
    }

    public function scopeFilterStatus(Builder $query, ?string $status): Builder
    {
        $status = trim((string) $status);
        if ($status === '') {
            return $query;
        }

        if (in_array($status, ['active', 'archived'], true)) {
            return $query->where('status', $status);
        }

        if ($status === 'expired') {
            return $query->whereDate('expires_on', '<', now()->toDateString());
        }

        if ($status === 'expiring_soon') {
            return $query->whereDate('expires_on', '>=', now()->toDateString())
                ->whereDate('expires_on', '<=', now()->addDays(30)->toDateString());
        }

        return $query;
    }

    public function scopeFilterCategory(Builder $query, ?string $category): Builder
    {
        $category = trim((string) $category);
        return $category === '' ? $query : $query->where('category', $category);
    }

    public function scopeFilterVisibility(Builder $query, ?string $visibility): Builder
    {
        $visibility = trim((string) $visibility);
        return $visibility === '' ? $query : $query->where('visibility', $visibility);
    }

    public function getComputedStatusAttribute(): string
    {
        if ($this->status === 'archived') {
            return 'archived';
        }

        if ($this->expires_on) {
            if ($this->expires_on->isPast()) {
                return 'expired';
            }

            if ($this->expires_on->lte(now()->addDays(30))) {
                return 'expiring_soon';
            }
        }

        return $this->status ?: 'active';
    }
}