<?php

namespace App\Models;

use App\Traits\LogsActivity;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Support\Facades\Storage;
use App\Traits\HasUuid;

class Transaction extends Model
{
    use HasFactory, SoftDeletes, HasUuid, LogsActivity;
    protected $table = 'transactions';

    protected $fillable = [
        'uuid',
        'public_code',
        'trans',
        'amount',
        'customer_id',
        'user_id',
        'note',
        'status',
        'type',
        'proof_image',
    ];

    protected $appends = ['direction', 'proof_image_urls'];

    public function customer()
    {
        return $this->belongsTo(Customer::class, 'customer_id');
    }

    public function user()
    {
        return $this->belongsTo(User::class, 'user_id');
    }

    /**
     * Whether this transaction added ('credit'), removed ('debit') or left
     * ('neutral') the customer's balance untouched. `amount` is always stored
     * positive, so the direction has to be derived from `type` (and, for
     * 'invoice', from the note) to mirror the actual balance mutation logic
     * in InvoicePaymentService / CustomerController / AdminTransactionController.
     */
    public function getDirectionAttribute(): string
    {
        return match ($this->type) {
            'admin_add_total', 'admin_add_credit', 'manual', 'refund' => 'credit',
            'admin_deduct_credit' => 'debit',
            'balance' => 'debit',
            'transfer' => 'neutral',
            'invoice' => str_starts_with((string) $this->note, 'Admin xác nhận')
                ? 'neutral'
                : 'debit',
            default => 'credit',
        };
    }

    /**
     * `proof_image` stores either a single relative storage path, or a
     * JSON-encoded array of paths (admin-created service with multiple
     * proofs). Resolve both shapes into absolute, browsable URLs so the
     * raw path string never leaks into the frontend as a literal href.
     */
    public function getProofImageUrlsAttribute(): array
    {
        if (! $this->proof_image) {
            return [];
        }

        $paths = json_decode($this->proof_image, true);
        if (! is_array($paths)) {
            $paths = [$this->proof_image];
        }

        return array_values(array_map(
            fn (string $path) => Storage::disk('public')->url($path),
            array_filter($paths, fn ($path) => is_string($path) && $path !== '')
        ));
    }
}