<?php

namespace Modules\SystemConfig\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class SystemConfig extends Model
{
    /**
     * The table associated with the model.
     *
     * @var string
     */
    protected $table = 'system_config';

    /**
     * The primary key associated with table.
     *
     * @var string
     */
    protected $primaryKey = 'system_config_id';

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'system_config_key',
        'system_config_value',
        'system_config_type',
        'system_config_description',
        'system_config_is_public',
        'system_config_updated_by'
    ];

    /**
     * The attributes that should be cast.
     *
     * @var array
     */
    protected $casts = [
        'system_config_is_public' => 'boolean',
        'created_at' => 'datetime',
        'updated_at' => 'datetime'
    ];

    /**
     * The attributes that should be mutated to dates.
     *
     * @var array
     */
    protected $dates = [
        'created_at',
        'updated_at'
    ];

    /**
     * Indicates if the model should be timestamped.
     *
     * @var bool
     */
    public $timestamps = true;

    /**
     * Get the user who updated the config.
     */
    public function updatedByUser(): BelongsTo
    {
        // Check if Auth module exists before relating
        if (class_exists('\Modules\Auth\Models\User')) {
            return $this->belongsTo(\Modules\Auth\Models\User::class, 'system_config_updated_by');
        }
        // Fallback or return empty relation if Auth module is missing (unlikely but safe)
        return $this->belongsTo(self::class, 'system_config_updated_by')->whereNull('system_config_id');
    }

    /**
     * Get config value by key.
     *
     * @param string $key
     * @param mixed $default
     * @return mixed
     */
    public static function get(string $key, $default = null)
    {
        $config = self::where('system_config_key', $key)->first();

        if (!$config) {
            return $default;
        }

        // Handle type casting if needed based on system_config_type
        // For now, return value directly
        return $config->system_config_value;
    }

    /**
     * Set config value.
     *
     * @param string $key
     * @param mixed $value
     * @param string $type
     * @param string|null $description
     * @param bool $isPublic
     * @return self
     */
    public static function set(string $key, $value, string $type = 'string', ?string $description = null, bool $isPublic = false): self
    {
        $config = self::firstOrNew(['system_config_key' => $key]);

        $config->system_config_value = $value;
        $config->system_config_type = $type;

        if ($description !== null) {
            $config->system_config_description = $description;
        }

        $config->system_config_is_public = $isPublic;

        if (isset($_SESSION['user_id'])) {
            $config->system_config_updated_by = $_SESSION['user_id'];
        }

        $config->save();

        return $config;
    }
}