<?php

namespace App\Models\Tenant;

use App\Models\Concerns\BelongsToTenant;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\SoftDeletes;

class WorkOrder extends Model
{
    use BelongsToTenant, SoftDeletes;

    public const STATUSES = [
        'new' => 'Nou',
        'diagnosis' => 'Diagnosticare',
        'agreement' => 'Aprobare client',
        'approved' => 'Aprobat',
        'in_work' => 'În lucru',
        'awaiting_parts' => 'Așteaptă piese',
        'ready' => 'Gata de ridicare',
        'done' => 'Predat',
        'cancelled' => 'Anulat',
    ];

    public const PAY_STATUSES = [
        'unpaid' => 'Neplătit',
        'partial' => 'Parțial',
        'paid' => 'Plătit',
    ];

    protected $fillable = [
        'company_id', 'number',
        'client_id', 'vehicle_id', 'master_id', 'deal_id', 'appointment_id',
        'opened_at', 'closed_at', 'mileage_in', 'mileage_out',
        'complaint', 'diagnosis', 'recommendations',
        'status', 'pay_status', 'approved', 'approved_at',
        'discount_pct', 'total',
    ];

    protected $casts = [
        'opened_at' => 'date',
        'closed_at' => 'date',
        'approved_at' => 'datetime',
        'approved' => 'boolean',
        'discount_pct' => 'decimal:2',
        'total' => 'decimal:2',
    ];

    public function client(): BelongsTo
    {
        return $this->belongsTo(Client::class);
    }

    public function vehicle(): BelongsTo
    {
        return $this->belongsTo(Vehicle::class);
    }

    public function master(): BelongsTo
    {
        return $this->belongsTo(User::class, 'master_id');
    }

    public function works(): HasMany
    {
        return $this->hasMany(WorkOrderWork::class);
    }

    public function parts(): HasMany
    {
        return $this->hasMany(WorkOrderPart::class);
    }

    public function payments(): HasMany
    {
        return $this->hasMany(Payment::class);
    }

    public function paidAmount(): float
    {
        return (float) $this->payments()->sum('amount');
    }

    public function balanceDue(): float
    {
        return max(0.0, (float) $this->total - $this->paidAmount());
    }

    public function recalcTotal(): void
    {
        $worksTotal = $this->works()->sum('total');
        $partsTotal = $this->parts()->sum('total');
        $sub = (float) $worksTotal + (float) $partsTotal;
        $disc = (float) $this->discount_pct;
        $this->total = round($sub * (1 - $disc / 100), 2);
        $this->save();
    }

    public static function generateNumber(int $companyId): string
    {
        $year = date('y');
        $count = static::withoutGlobalScopes()
            ->where('company_id', $companyId)
            ->whereYear('created_at', date('Y'))
            ->count();
        return sprintf('WO-%s-%04d', $year, $count + 1);
    }
}