<?php

namespace App\Modules\Inventory\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use App\Modules\Core\Models\User;

use Spatie\Activitylog\Traits\LogsActivity;
use Spatie\Activitylog\LogOptions;

class InventoryAdjustDoc extends Model
{
    use HasFactory, LogsActivity;

    protected $fillable = [
        'doc_no',
        'count_doc_id',
        'warehouse_id',
        'status',
        'reason',
        'remarks',
        'posted_at',
        'created_by',
        'updated_by',
        'posted_by',
    ];

    protected $casts = [
        'posted_at' => 'datetime',
    ];

    protected static function boot()
    {
        parent::boot();

        static::creating(function ($model) {
            if (empty($model->doc_no)) {
                $today = date('Ymd');
                $prefix = 'ADJ-' . $today . '-';
                
                $lastDoc = static::where('doc_no', 'like', $prefix . '%')
                    ->orderBy('doc_no', 'desc')
                    ->first();

                if ($lastDoc) {
                    $lastNumber = substr($lastDoc->doc_no, -2);
                    $nextNumber = str_pad((int)$lastNumber + 1, 2, '0', STR_PAD_LEFT);
                } else {
                    $nextNumber = '01';
                }

                $model->doc_no = $prefix . $nextNumber;
            }
        });
    }

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

    public function countDoc(): BelongsTo
    {
        return $this->belongsTo(InventoryCountDoc::class, 'count_doc_id');
    }

    public function items(): HasMany
    {
        return $this->hasMany(InventoryAdjustItem::class, 'adjust_doc_id');
    }

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

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

    public function getActivitylogOptions(): LogOptions
    {
        return LogOptions::defaults()
            ->logFillable()
            ->dontSubmitEmptyLogs();
    }

    public function tapActivity(\Spatie\Activitylog\Contracts\Activity $activity, string $eventName)
    {
        // 確保為陣列以進行修改
        $properties = $activity->properties instanceof \Illuminate\Support\Collection 
            ? $activity->properties->toArray() 
            : $activity->properties;

        $snapshot = $properties['snapshot'] ?? [];

        // Snapshot key information
        $snapshot['doc_no'] = $this->doc_no;
        $snapshot['warehouse_name'] = $this->warehouse ? $this->warehouse->name : null;
        $snapshot['posted_at'] = $this->posted_at ? $this->posted_at->format('Y-m-d H:i:s') : null;
        $snapshot['status'] = $this->status;
        $snapshot['created_by_name'] = $this->createdBy ? $this->createdBy->name : null;
        $snapshot['posted_by_name'] = $this->postedBy ? $this->postedBy->name : null;

        $properties['snapshot'] = $snapshot;

        // 全域 ID 轉名稱邏輯 (用於 attributes 與 old)
        $convertIdsToNames = function (&$data) {
            if (empty($data) || !is_array($data)) return;

            // 倉庫 ID 轉換
            if (isset($data['warehouse_id']) && is_numeric($data['warehouse_id'])) {
                $warehouse = \App\Modules\Inventory\Models\Warehouse::find($data['warehouse_id']);
                if ($warehouse) {
                    $data['warehouse_id'] = $warehouse->name;
                }
            }

            // 使用者 ID 轉換
            $userFields = ['created_by', 'updated_by', 'posted_by'];
            foreach ($userFields as $field) {
                if (isset($data[$field]) && is_numeric($data[$field])) {
                    $user = \App\Modules\Core\Models\User::find($data[$field]);
                    if ($user) {
                        $data[$field] = $user->name;
                    }
                }
            }
        };

        if (isset($properties['attributes'])) {
            $convertIdsToNames($properties['attributes']);
        }
        if (isset($properties['old'])) {
            $convertIdsToNames($properties['old']);
        }

        $activity->properties = $properties;
    }
}
