<?php

namespace App\Http\Controllers\Api;

use App\Enums\AppOs;
use App\Enums\AppUpdateStrategy;
use App\Http\Resources\AppVersionResource;
use App\Models\AppVersion;
use Illuminate\Http\Request;

class AppVersionController extends Controller
{
    public function latest(Request $request): array
    {
        // 客户端系统
        $os = AppOs::tryFrom((string) $request->header('app-cli-os'));
        // 客户端版本
        $version = (int) $request->header('app-cli-version', 0);

        $android = AppVersion::onlyReleased()
            ->where('os', AppOs::Android)
            ->latest('version')
            ->first();

        $ios = AppVersion::onlyReleased()
            ->where('os', AppOs::Ios)
            ->latest('version')
            ->first();

        switch ($os) {
            case AppOs::Android:
                if ($android->version > $version + 1) {
                    if (! $android->isApkUpdate()) {
                        $apkUpdateVersion = AppVersion::onlyReleased()
                            ->where('os', AppOs::Android)
                            ->where('version', '>', $version)
                            ->where('update_strategy', AppUpdateStrategy::Apk)
                            ->latest('version')
                            ->first();

                        // 全量包更新
                        if ($apkUpdateVersion) {
                            if ((string) $android->apk_url !== '') {
                                $android->update_strategy = AppUpdateStrategy::Apk;
                            } else {
                                $android = $apkUpdateVersion;
                            }
                        }
                    }
                }
                break;

            case AppOs::Ios:
                if ($ios->version > $version + 1) {
                    if (! $ios->isApkUpdate()) {
                        $apkUpdateVersion = AppVersion::onlyReleased()
                            ->where('os', AppOs::Ios)
                            ->where('version', '>', $version)
                            ->where('update_strategy', AppUpdateStrategy::Apk)
                            ->latest('version')
                            ->first();

                        // 全量包更新
                        if ($apkUpdateVersion) {
                            if ((string) $ios->apk_url !== '') {
                                $ios->update_strategy = AppUpdateStrategy::Apk;
                            } else {
                                $ios = $apkUpdateVersion;
                            }
                        }
                    }
                }
                break;
        }

        return [
            'android' => $android ? AppVersionResource::make($android) : null,
            'ios' => $ios ? AppVersionResource::make($ios) : null,
        ];
    }
}