<?php

/**
 * 文件功能：后台用户大盘管理控制器
 * (替代原版 gl/ 下的各种管理面)
 *
 * @author   ChatRoom Laravel
 *
 * @version  1.0.0
 */

namespace App\Http\Controllers\Admin;

use App\Enums\CurrencySource;
use App\Http\Controllers\Controller;
use App\Models\User;
use App\Services\UserCurrencyService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Hash;
use Illuminate\View\View;

class UserManagerController extends Controller
{
    /**
     * 注入统一积分服务（用于管理员调整经验/金币/魅力时记录流水）
     */
    public function __construct(
        private readonly UserCurrencyService $currencyService,
    ) {}

    /**
     * 显示用户列表及搜索（支持按等级/经验/金币/魅力排序）
     */
    public function index(Request $request): View
    {
        $query = User::query();

        if ($request->filled('username')) {
            $query->where('username', 'like', '%'.$request->input('username').'%');
        }

        // 排序：允许的字段白名单，防止 SQL 注入
        $sortable = ['user_level', 'exp_num', 'jjb', 'meili', 'id'];
        $sortBy = in_array($request->input('sort_by'), $sortable) ? $request->input('sort_by') : 'id';
        $sortDir = $request->input('sort_dir') === 'asc' ? 'asc' : 'desc';

        $users = $query
            ->with(['activePosition.position.department', 'vipLevel'])
            ->orderBy($sortBy, $sortDir)
            ->paginate(20)
            ->withQueryString();

        // VIP 等级选项列表（供编辑弹窗使用）
        $vipLevels = \App\Models\VipLevel::orderBy('sort_order')->get();

        return view('admin.users.index', compact('users', 'vipLevels', 'sortBy', 'sortDir'));
    }

    /**
     * 修改用户资料、等级或密码 (AJAX 或表单)
     *
     * @param  User  $user  路由模型自动注入
     */
    public function update(Request $request, User $user): JsonResponse|RedirectResponse
    {
        $targetUser = $user;
        $currentUser = Auth::user();

        // 越权防护：不能修改 等级大于或等于自己 的目标（除非修改自己）
        if ($targetUser->id !== $currentUser->id && $targetUser->user_level >= $currentUser->user_level) {
            return response()->json(['status' => 'error', 'message' => '权限不足：您无法修改同级或高级管理人员资料。'], 403);
        }

        $validated = $request->validate([
            'sex' => 'sometimes|integer|in:0,1,2',
            'exp_num' => 'sometimes|integer|min:0',
            'jjb' => 'sometimes|integer|min:0',
            'meili' => 'sometimes|integer|min:0',
            'qianming' => 'sometimes|nullable|string|max:255',
            'headface' => 'sometimes|string|max:50',
            'password' => 'nullable|string|min:6',
            'vip_level_id' => 'sometimes|nullable|integer|exists:vip_levels,id',
            'hy_time' => 'sometimes|nullable|date',
        ]);

        if (isset($validated['sex'])) {
            $targetUser->sex = $validated['sex'];
        }
        if (isset($validated['exp_num'])) {
            // 计算差值并通过统一服务记录流水（管理员手动调整）
            $expDiff = $validated['exp_num'] - ($targetUser->exp_num ?? 0);
            if ($expDiff !== 0) {
                $this->currencyService->change(
                    $targetUser, 'exp', $expDiff, CurrencySource::ADMIN_ADJUST,
                    "管理员 {$currentUser->username} 手动调整经验",
                );
                $targetUser->refresh();
            }
        }
        if (isset($validated['jjb'])) {
            $jjbDiff = $validated['jjb'] - ($targetUser->jjb ?? 0);
            if ($jjbDiff !== 0) {
                $this->currencyService->change(
                    $targetUser, 'gold', $jjbDiff, CurrencySource::ADMIN_ADJUST,
                    "管理员 {$currentUser->username} 手动调整金币",
                );
                $targetUser->refresh();
            }
        }
        if (isset($validated['meili'])) {
            $meiliDiff = $validated['meili'] - ($targetUser->meili ?? 0);
            if ($meiliDiff !== 0) {
                $this->currencyService->change(
                    $targetUser, 'charm', $meiliDiff, CurrencySource::ADMIN_ADJUST,
                    "管理员 {$currentUser->username} 手动调整魅力",
                );
                $targetUser->refresh();
            }
        }
        if (array_key_exists('qianming', $validated)) {
            $targetUser->qianming = $validated['qianming'];
        }
        if (isset($validated['headface'])) {
            $targetUser->headface = $validated['headface'];
        }

        // VIP 会员等级设置
        if (array_key_exists('vip_level_id', $validated)) {
            $targetUser->vip_level_id = $validated['vip_level_id'] ?: null;
        }
        if (array_key_exists('hy_time', $validated)) {
            $targetUser->hy_time = $validated['hy_time'] ?: null;
        }

        if (! empty($validated['password'])) {
            $targetUser->password = Hash::make($validated['password']);
        }

        $targetUser->save();

        if ($request->wantsJson()) {
            return response()->json(['status' => 'success', 'message' => '用户资料已强行更新完毕！']);
        }

        return back()->with('success', '用户资料已更新！');
    }

    /**
     * 物理删除杀封用户
     *
     * @param  User  $user  路由模型自动注入
     */
    public function destroy(Request $request, User $user): RedirectResponse
    {
        $targetUser = $user;
        $currentUser = Auth::user();

        // 越权防护：不允许删除同级或更高等级的账号
        if ($targetUser->id !== $currentUser->id && $targetUser->user_level >= $currentUser->user_level) {
            abort(403, '权限不足：无法删除同级或高级账号！');
        }

        // 管理员保护：达到踢人等级(level_kick)的用户视为管理员，不可被强杀
        $levelKick = (int) \App\Models\Sysparam::getValue('level_kick', '10');
        if ($targetUser->user_level >= $levelKick) {
            abort(403, '该用户为管理员，不允许强杀！请先在用户编辑中降低其等级。');
        }

        $targetUser->delete();

        return back()->with('success', '目标已被物理删除。');
    }
}