<?php

namespace App\Models;

use App\Support\PortalLocale;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Support\Facades\Schema;

class CompetitionPortalLocale extends Model
{
    protected $fillable = [
        'user_id',
        'competition_id',
        'portal',
        'locale',
    ];

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

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

    public static function lockOrGet(int $userId, int $competitionId, string $portal, string $requested): string
    {
        if (! Schema::hasTable((new static)->getTable())) {
            return PortalLocale::isValid($requested) ? $requested : PortalLocale::ZH;
        }

        $locale = PortalLocale::isValid($requested) ? $requested : PortalLocale::ZH;

        $row = static::query()->firstOrCreate(
            [
                'user_id' => $userId,
                'competition_id' => $competitionId,
                'portal' => $portal,
            ],
            ['locale' => $locale]
        );

        return PortalLocale::isValid((string) $row->locale) ? (string) $row->locale : PortalLocale::ZH;
    }

    /** 未提交时跟随本次请求语言，可覆盖草稿语言。 */
    public static function remember(int $userId, int $competitionId, string $portal, string $requested): string
    {
        if (! Schema::hasTable((new static)->getTable())) {
            return PortalLocale::isValid($requested) ? $requested : PortalLocale::ZH;
        }

        $locale = PortalLocale::isValid($requested) ? $requested : PortalLocale::ZH;

        $row = static::query()->updateOrCreate(
            [
                'user_id' => $userId,
                'competition_id' => $competitionId,
                'portal' => $portal,
            ],
            ['locale' => $locale]
        );

        return PortalLocale::isValid((string) $row->locale) ? (string) $row->locale : PortalLocale::ZH;
    }

    public static function resolveForLogin(int $userId, int $competitionId, string $portal, string $requested, bool $locked): string
    {
        if ($locked) {
            return static::lockOrGet($userId, $competitionId, $portal, $requested);
        }

        return static::remember($userId, $competitionId, $portal, $requested);
    }
}