<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Casts\Attribute;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Support\Facades\Storage;
use Spatie\Translatable\HasTranslations;
use App\Models\News;

class NewsParagraph extends Model
{
    use HasFactory, HasTranslations;
    CONST IMAGE = 1;
    CONST TEXT = 2;
    CONST VIDEO = 3;

    protected $guarded = ['id'];
    public $timestamps = false;
    protected $appends = ['paragraph_video_img', 'paragraph_video_type', 'paragraph_video_url'];
    public $translatable = ['video_img_alt', 'link'];
    protected $casts = [
        'text_content' => 'array',         // JSON 轉陣列
    ];

    public function news(){
        return $this->belongsTo(News::class);
    }

    public function contentType()
    {
        switch ($this->paragraph_type){
            case 1:
                return "image";
            case 2:
                return "text";
            case 3:
                return "video";
            default:
                return "";
        }
    }

    public function photos(){
        return $this->hasMany(NewsPhoto::class)->orderBy("order");
    }

    protected function paragraphVideoType(): Attribute
    {
        return Attribute::make(
            get: fn ($value) => ($this->paragraph_type == 3 && !is_null($this->video_type)) ? ($this->video_type == 1 ? "url" : "upload") : null,
        );

    }
    protected function paragraphVideoImg(): Attribute
    {
        return Attribute::make(
            get: fn ($value) => is_null($this->video_img) ? null :Storage::disk('public')->url($this->video_img),
        );
    }
    protected function paragraphVideoUrl(): Attribute
    {
        return Attribute::make(
            get: fn ($value) => ($this->video_type == 2) ? Storage::disk('public')->url($this->video_url) : $this->link,
        );
    }
    /**
     * 取得特定語言的文字內容
     */
    public function getTextContent($locale = 'zh_TW'): string
    {
        if ($this->paragraph_type != 2) {
            return '';
        }

        $content = $this->text_content;

        if (is_array($content)) {
            return $content[$locale] ?? '';
        }

        if (is_string($content)) {
            $decoded = json_decode($content, true);
            return $decoded[$locale] ?? '';
        }

        return '';
    }



}
