<?php

namespace app\service;

use app\model\UserDailyStat;
use think\exception\HttpResponseException;

class PermissionService
{
    public static function checkDailyLimit(array $user): void
    {
        $today = date('Y-m-d');
        $stats = UserDailyStat::where('user_id', $user['id'])
            ->where('stat_date', $today)
            ->find();

        $count = (int) ($stats->message_count ?? 0);
        if ($count >= (int) $user['max_messages_per_day']) {
            self::abort('今日消息数量已达上限', 429);
        }
    }

    public static function incrementDailyCount(int $userId): void
    {
        $today = date('Y-m-d');
        $stats = UserDailyStat::where('user_id', $userId)
            ->where('stat_date', $today)
            ->find();

        if ($stats) {
            $stats->inc('message_count')->save();
        } else {
            UserDailyStat::create([
                'user_id'       => $userId,
                'stat_date'     => $today,
                'message_count' => 1,
            ]);
        }
    }

    public static function checkConversationLimit(array $user): void
    {
        $count = \app\model\Conversation::where('user_id', $user['id'])
            ->whereNull('deleted_at')
            ->count();

        if ($count >= (int) $user['max_conversations']) {
            self::abort('会话数量已达上限', 429);
        }
    }

    public static function canUpload(array $user, string $type): bool
    {
        $permissions = $user['membership_permissions'] ?? [];
        $map = [
            'image'    => ['upload_image', 'can_upload_image'],
            'video'    => ['upload_video', 'can_upload_video'],
            'document' => ['upload_file', 'can_upload_file'],
            'audio'    => ['voice', 'can_use_voice'],
        ];

        if (!isset($map[$type])) {
            return false;
        }

        [$featureKey, $permKey] = $map[$type];
        if (!SettingsService::isFeatureEnabled($featureKey)) {
            return false;
        }

        return !empty($permissions[$permKey]);
    }

    public static function getMaxUploadSizeMb(array $user): int
    {
        return min((int) $user['max_upload_size_mb'], (int) config('upload.max_size_mb'));
    }

    private static function abort(string $message, int $httpCode = 400): void
    {
        throw new HttpResponseException(json([
            'code'    => 1,
            'message' => $message,
            'data'    => null,
        ], $httpCode));
    }
}