<?php

namespace App\Http\Controllers\Admin;

use App\Exports\BaseExport;
use App\Exports\CommonExport;
use App\Helpers\ResponseCode;
use App\Models\CustomForm;
use App\Models\CustomFormField;
use App\Models\Teacher;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Validator;
use Maatwebsite\Excel\Facades\Excel;

class TeacherController extends BaseController
{

    /**
     * 构造函数
     */
    public function __construct()
    {
        parent::__construct(new Teacher());
    }

    /**
     * @OA\Get(
     *     path="/api/admin/teachers/index",
     *     tags={"老师管理"},
     *     summary="列表",
     *     description="",
     *     @OA\Parameter(name="is_export", in="query", @OA\Schema(type="string"), required=false, description="是否导出0否1是"),
     *     @OA\Parameter(name="export_fields", in="query", @OA\Schema(type="string"), required=false, description="需要导出的字段数组"),
     *     @OA\Parameter(name="filter", in="query", @OA\Schema(type="string"), required=false, description="查询条件。数组"),
     *     @OA\Parameter(name="show_relation", in="query", @OA\Schema(type="string"), required=false, description="需要输出的关联关系数组，包括：teacher，courseSettings，coursePeriods"),
     *     @OA\Parameter(name="page_size", in="query", @OA\Schema(type="string"), required=false, description="每页显示的条数"),
     *     @OA\Parameter(name="page", in="query", @OA\Schema(type="string"), required=false, description="页码"),
     *     @OA\Parameter(name="sort_name", in="query", @OA\Schema(type="string"), required=false, description="排序字段名字"),
     *     @OA\Parameter(name="sort_type", in="query", @OA\Schema(type="string"), required=false, description="排序类型"),
     *     @OA\Parameter(name="theme", in="query", @OA\Schema(type="string"), required=false, description="主题"),
     *     @OA\Parameter(name="direction", in="query", @OA\Schema(type="string"), required=false, description="方向"),
     *     @OA\Parameter(name="keyword", in="query", @OA\Schema(type="string"), required=true, description="搜索关键词"),
     *     @OA\Parameter(name="token", in="query", @OA\Schema(type="string"), required=true, description="token"),
     *     @OA\Response(
     *      response="200",
     *      description="暂无"
     *     )
     * )
     */
    public function index()
    {
        $all = request()->all();
        $list = $this->model->with('courseContents.course', 'courseContents')->where(function ($query) use ($all) {
            if (isset($all['filter']) && !empty($all['filter'])) {
                foreach ($all['filter'] as $condition) {
                    $key = $condition['key'] ?? null;
                    $op = $condition['op'] ?? null;
                    $value = $condition['value'] ?? null;
                    if (!isset($key) || !isset($op) || !isset($value)) {
                        continue;
                    }
                    // 等于
                    if ($op == 'eq') {
                        $query->where($key, $value);
                    }
                    // 不等于
                    if ($op == 'neq') {
                        $query->where($key, '!=', $value);
                    }
                    // 大于
                    if ($op == 'gt') {
                        $query->where($key, '>', $value);
                    }
                    // 大于等于
                    if ($op == 'egt') {
                        $query->where($key, '>=', $value);
                    }
                    // 小于
                    if ($op == 'lt') {
                        $query->where($key, '<', $value);
                    }
                    // 小于等于
                    if ($op == 'elt') {
                        $query->where($key, '<=', $value);
                    }
                    // 模糊搜索
                    if ($op == 'like') {
                        $query->where($key, 'like', '%' . $value . '%');
                    }
                    // 否定模糊搜索
                    if ($op == 'notlike') {
                        $query->where($key, 'not like', '%' . $value . '%');
                    }
                    // null搜索
                    if ($op == 'null') {
                        $query->whereNull($key);
                    }
                    // notnull搜索
                    if ($op == 'notnull') {
                        $query->whereNotNull($key);
                    }
                    // 范围搜索
                    if ($op == 'range') {
                        list($from, $to) = explode(',', $value);
                        if (empty($from) || empty($to)) {
                            continue;
                        }
                        $query->whereBetween($key, [$from, $to]);
                    }
                }
            }
        })->orderBy($all['sort_name'] ?? 'id', $all['sort_type'] ?? 'desc');
        // 应用与列表一致的筛选
        if (isset($all['theme']) || isset($all['direction'])) {
            $list = $list->whereHas('courseContents', function ($query) use ($all) {
                if (isset($all['theme'])) {
                    $query->where('theme', $all['theme']);
                }
                if (isset($all['direction'])) {
                    $query->where('direction', $all['direction']);
                }
            });
        }
        if (isset($all['keyword'])) {
            $list = $list->where(function ($query) use ($all) {
                $query->whereHas('courseContents', function ($query) use ($all) {
                    $query->where('direction', 'like', '%' . $all['keyword'] . '%');
                })->orWhere('name', 'like', '%' . $all['keyword'] . '%');
            });
        }
        if (isset($all['is_export']) && !empty($all['is_export'])) {
            // 导出
            // 取数并展开为“老师 x 课程”的多行
            $teachers = $list->limit(5000)->get();
            $rows = [];
            foreach ($teachers as $teacher) {
                $hasCourses = $teacher->courseContents && $teacher->courseContents->count() > 0;
                if ($hasCourses) {
                    foreach ($teacher->courseContents as $content) {
                        $rows[] = [
                            'teacher_name' => $teacher->name ?? '',
                            'introduce' => $teacher->introduce ?? '',
                            'sex' => $teacher->sex ?? '',
                            'mobile' => $teacher->mobile ?? '',
                            'course_name' => optional($content->course)->name ?? '',
                            'theme' => $content->theme ?? '',
                            'direction' => $content->direction ?? '',
                        ];
                    }
                } else {
                    // 无课程时也导出一行，课程相关列留空
                    $rows[] = [
                        'teacher_name' => $teacher->name ?? '',
                        'introduce' => $teacher->introduce ?? '',
                        'sex' => $teacher->sex ?? '',
                        'mobile' => $teacher->mobile ?? '',
                        'course_name' => '',
                        'theme' => '',
                        'direction' => '',
                    ];
                }
            }
            // 列映射与顺序
            $exportFields = [
                'teacher_name' => '授课老师',
                'introduce' => '老师简介',
                'sex' => '性别',
                'mobile' => '联系方式',
                'course_name' => '课程名称',
                'theme' => '课程主题',
                'direction' => '课程方向',
            ];
            $fileName = ($all['file_name'] ?? '老师课程_') . date('YmdHis') . '.xlsx';
            return Excel::download(new CommonExport($rows, $exportFields), $fileName);
        } else {
            // 输出
            $list = $list->paginate($all['page_size'] ?? 20);
        }
        return $this->success($list);
    }

    /**
     * @OA\Get(
     *     path="/api/admin/teachers/show",
     *     tags={"老师管理"},
     *     summary="详情",
     *     description="",
     *     @OA\Parameter(name="id", in="query", @OA\Schema(type="string"), required=true, description="id"),
     *     @OA\Parameter(name="show_relation", in="query", @OA\Schema(type="string"), required=false, description="需要输出的关联关系数组，填写输出指定数据"),
     *     @OA\Parameter(name="token", in="query", @OA\Schema(type="string"), required=true, description="token"),
     *     @OA\Response(
     *      response="200",
     *      description="暂无"
     *     )
     * )
     */
    public function show()
    {
        return parent::show();
    }

    /**
     * @OA\Post(
     *     path="/api/admin/teachers/save",
     *     tags={"时间段设置"},
     *     summary="更新或新增",
     *     @OA\Parameter(name="id", in="query", @OA\Schema(type="integer"), required=true, description="课程ID（存在则更新，不存在则新增）"),
     *     @OA\Parameter(name="token", in="query", @OA\Schema(type="string"), required=true, description="访问令牌"),
     *     @OA\Parameter(name="name", in="query", @OA\Schema(type="integer"), description="名字"),
     *     @OA\Parameter(name="sex", in="query", @OA\Schema(type="string"), description="性别"),
     *     @OA\Parameter(name="remark", in="query", @OA\Schema(type="string"), description="备注"),
     *     @OA\Parameter(name="introduce", in="query", @OA\Schema(type="string"), description="介绍"),
     *     @OA\Response(
     *         response=200,
     *         description="操作成功"
     *     )
     * )
     */
    public function save()
    {
        return parent::save();
    }

    /**
     * @OA\Get(
     *     path="/api/admin/teachers/destroy",
     *     tags={"老师管理"},
     *     summary="删除",
     *     description="",
     *     @OA\Parameter(name="id", in="query", @OA\Schema(type="string"), required=true, description="id"),
     *     @OA\Parameter(name="token", in="query", @OA\Schema(type="string"), required=true, description="token"),
     *     @OA\Response(
     *      response="200",
     *      description="暂无"
     *     )
     * )
     */
    public function destroy()
    {
        return parent::destroy();
    }

    /**
     * @OA\Post(
     *     path="/api/admin/teachers/excel-show",
     *     tags={"老师管理"},
     *     summary="导入预览",
     *     description="",
     *     @OA\Parameter(name="file", in="query", @OA\Schema(type="string"), required=true, description="文件"),
     *     @OA\Parameter(name="token", in="query", @OA\Schema(type="string"), required=true, description="token"),
     *     @OA\Response(
     *      response="200",
     *      description="暂无"
     *     )
     * )
     */
    public function excelShow()
    {
        return parent::excelShow();
    }

    /**
     * @OA\Post(
     *     path="/api/admin/teachers/import",
     *     tags={"老师管理"},
     *     summary="导入",
     *     description="",
     *     @OA\Parameter(name="data", in="query", @OA\Schema(type="string"), required=true, description="导入分析获取到的二维数组"),
     *     @OA\Parameter(name="token", in="query", @OA\Schema(type="string"), required=true, description="token"),
     *     @OA\Response(
     *      response="200",
     *      description="暂无"
     *     )
     * )
     */
    public function import()
    {
        $all = \request()->all();
        $messages = [
            'data.required' => '数据必填',
        ];
        $validator = Validator::make($all, [
            'data' => 'required',
        ], $messages);
        if ($validator->fails()) {
            return $this->fail([ResponseCode::ERROR_PARAMETER, implode(',', $validator->errors()->all())]);
        }
        $records = $all['data'];
        DB::beginTransaction();
        try {
            // 获取数据表的所有字段
            // 分段导入
            foreach ($records as $item) {
                $where = ['name' => $item['name']];
                $data = [
                    'name' => $item['name'],
                    'sex' => $item['sex'] ?? '',
                    'remark' => $item['remark'] ?? '',
                    'introduce' => $item['introduce'] ?? '',
                    'mobile' => $item['mobile'] ?? '',
                ];
                $this->model->updateOrCreate($where, $data);
            }
            DB::commit();
            return $this->success(['total' => count($records), 'filter_total' => count($records)]);
        } catch (\Exception $exception) {
            DB::rollBack();
            return $this->fail([$exception->getCode(), $exception->getMessage()]);
        }
    }


}