<?php

namespace Modules\MaterialLogistics\Models;
use Modules\MasterData\Models\Material;
use Modules\MasterData\Models\MaterialGroup;

use App\Models\User;
use App\Traits\HasPublicIdentifier;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Modules\MaterialLogistics\Enums\DeploymentStatus;
use Modules\ApprovalWorkflow\Traits\HasApprovable;
use Modules\ProjectManagement\Models\Project;

class MaterialDeployment extends Model
{
    use HasApprovable, HasPublicIdentifier;

    protected $fillable = [
        'project_id', 'material_requisition_id', 'material_id', 'requested_by',
        'quantity', 'status', 'notes',
        'dispatched_at', 'delivered_at', 'consumed_at',
    ];

    protected function casts(): array
    {
        return [
            'status' => DeploymentStatus::class,
            'quantity' => 'decimal:2',
            'dispatched_at' => 'datetime',
            'delivered_at' => 'datetime',
            'consumed_at' => 'datetime',
        ];
    }

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

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

    public function requisition(): BelongsTo
    {
        return $this->belongsTo(MaterialRequisition::class, 'material_requisition_id');
    }

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

    public function transitionTo(DeploymentStatus $newStatus): void
    {
        $allowed = $this->status->allowedTransitions();
        if (!in_array($newStatus, $allowed)) {
            throw new \InvalidArgumentException(
                "Cannot transition deployment from {$this->status->label()} to {$newStatus->label()}"
            );
        }

        $updates = ['status' => $newStatus];
        match ($newStatus) {
            DeploymentStatus::InTransit => $updates['dispatched_at'] = now(),
            DeploymentStatus::Delivered => $updates['delivered_at'] = now(),
            DeploymentStatus::Consumed => $updates['consumed_at'] = now(),
            default => null,
        };

        $this->update($updates);
    }
}