<?php

/**
 * 文件功能：后台职务管理控制器
 * 提供职务的 CRUD 功能，包含任命权限白名单（多选 position_appoint_limits）的同步
 * 职务属于部门，包含等级、图标、人数上限、奖励上限等配置
 *
 * @author   ChatRoom Laravel
 *
 * @version  1.0.0
 */

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\Department;
use App\Models\Position;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class PositionController extends Controller
{
    /**
     * 职务列表页
     */
    public function index(): View
    {
        // 按部门分组展示
        $departments = Department::with([
            'positions' => fn ($q) => $q->withCount(['activeUserPositions'])->ordered(),
        ])->ordered()->get();

        // 全部职务（供任命白名单多选框使用）
        $allPositions = Position::with('department')->orderByDesc('rank')->get();

        return view('admin.positions.index', compact('departments', 'allPositions'));
    }

    /**
     * 创建职务（同时同步任命白名单）
     */
    public function store(Request $request): RedirectResponse
    {
        $data = $request->validate([
            'department_id' => 'required|exists:departments,id',
            'name' => 'required|string|max:50',
            'icon' => 'nullable|string|max:10',
            'rank' => 'required|integer|min:0|max:99',
            'level' => 'required|integer|min:1|max:100',
            'max_persons' => 'nullable|integer|min:1',
            'max_reward' => 'nullable|integer|min:0',
            'sort_order' => 'required|integer|min:0',
            'appointable_ids' => 'nullable|array',
            'appointable_ids.*' => 'exists:positions,id',
        ]);

        $appointableIds = $data['appointable_ids'] ?? [];
        unset($data['appointable_ids']);

        $position = Position::create($data);

        // 同步任命白名单（有选则写，没选则清空=无任命权）
        $position->appointablePositions()->sync($appointableIds);

        return redirect()->route('admin.positions.index')->with('success', "职务【{$data['name']}】创建成功！");
    }

    /**
     * 更新职务（含任命白名单同步）
     */
    public function update(Request $request, Position $position): RedirectResponse
    {
        $data = $request->validate([
            'department_id' => 'required|exists:departments,id',
            'name' => 'required|string|max:50',
            'icon' => 'nullable|string|max:10',
            'rank' => 'required|integer|min:0|max:99',
            'level' => 'required|integer|min:1|max:100',
            'max_persons' => 'nullable|integer|min:1',
            'max_reward' => 'nullable|integer|min:0',
            'sort_order' => 'required|integer|min:0',
            'appointable_ids' => 'nullable|array',
            'appointable_ids.*' => 'exists:positions,id',
        ]);

        $appointableIds = $data['appointable_ids'] ?? [];
        unset($data['appointable_ids']);

        $position->update($data);
        $position->appointablePositions()->sync($appointableIds);

        return redirect()->route('admin.positions.index')->with('success', "职务【{$data['name']}】更新成功！");
    }

    /**
     * 删除职务（有在职人员时拒绝）
     */
    public function destroy(Position $position): RedirectResponse
    {
        if ($position->isFull() || $position->activeUserPositions()->exists()) {
            return redirect()->route('admin.positions.index')
                ->with('error', "职务【{$position->name}】尚有在职人员，请先撤销后再删除。");
        }

        $position->delete();

        return redirect()->route('admin.positions.index')->with('success', "职务【{$position->name}】已删除！");
    }
}