<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class MutationDetail extends Model
{
    use HasFactory;

    protected $fillable = [
        'mutation_id',
        'product_id',
        'quantity_requested',
        'quantity_approved',
        'notes'
    ];

    protected $casts = [
        'quantity_requested' => 'decimal:2',
        'quantity_approved' => 'decimal:2'
    ];

    public function mutation()
    {
        return $this->belongsTo(Mutation::class);
    }

    public function product()
    {
        return $this->belongsTo(Product::class);
    }

    // Helper methods
    public function getQuantityDifferenceAttribute()
    {
        return $this->quantity_approved - $this->quantity_requested;
    }

    public function isFullyApproved()
    {
        return $this->quantity_approved !== null && $this->quantity_approved == $this->quantity_requested;
    }

    public function isPartiallyApproved()
    {
        return $this->quantity_approved !== null && $this->quantity_approved > 0 && $this->quantity_approved < $this->quantity_requested;
    }

    public function isRejected()
    {
        // Hanya dianggap ditolak jika mutasi sudah di-approve/reject dan quantity_approved = 0
        $mutationStatus = $this->mutation->status->value ?? null;
        return in_array($mutationStatus, ['approved', 'completed', 'rejected']) && $this->quantity_approved == 0;
    }

    public function getApprovalStatusAttribute()
    {
        $mutationStatus = $this->mutation->status->value ?? null;
        
        // Jika mutasi belum di-approve, semua detail statusnya "Menunggu"
        if (!in_array($mutationStatus, ['approved', 'completed', 'rejected'])) {
            return 'Menunggu';
        }
        
        // Jika mutasi sudah di-approve/complete, baru cek quantity_approved
        if ($this->isFullyApproved()) {
            return 'Disetujui Penuh';
        } elseif ($this->isPartiallyApproved()) {
            return 'Disetujui Sebagian';
        } elseif ($this->isRejected()) {
            return 'Ditolak';
        } else {
            return 'Menunggu';
        }
    }

    public function getApprovalStatusColorAttribute()
    {
        $mutationStatus = $this->mutation->status->value ?? null;
        
        // Jika mutasi belum di-approve, semua detail statusnya "info" (menunggu)
        if (!in_array($mutationStatus, ['approved', 'completed', 'rejected'])) {
            return 'info';
        }
        
        // Jika mutasi sudah di-approve/complete, baru cek quantity_approved
        if ($this->isFullyApproved()) {
            return 'success';
        } elseif ($this->isPartiallyApproved()) {
            return 'warning';
        } elseif ($this->isRejected()) {
            return 'danger';
        } else {
            return 'info';
        }
    }

    // Scope untuk filter berdasarkan status approval
    public function scopeFullyApproved($query)
    {
        return $query->whereColumn('quantity_approved', '=', 'quantity_requested');
    }

    public function scopePartiallyApproved($query)
    {
        return $query->where('quantity_approved', '>', 0)
                    ->whereColumn('quantity_approved', '<', 'quantity_requested');
    }

    public function scopeRejected($query)
    {
        return $query->where('quantity_approved', '=', 0);
    }
}