<?php

namespace App\Http\Controllers\Admin;

use App\Helpers\ResponseCode;
use App\Models\CourseForm;
use Illuminate\Support\Facades\Validator;

class CourseFormsController extends BaseController
{

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

    /**
     * @OA\Get(
     *     path="/api/admin/course-forms/index",
     *     tags={"课程表单"},
     *     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="token", in="query", @OA\Schema(type="string"), required=true, description="token"),
     *     @OA\Response(
     *      response="200",
     *      description="暂无"
     *     )
     * )
     */
    public function index()
    {
        return parent::index();
    }

    /**
     * @OA\Get(
     *     path="/api/admin/course-forms/show",
     *     tags={"课程表单"},
     *     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/course-forms/save",
     *     tags={"课程表单"},
     *     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="验证token"),
     *     @OA\Parameter(name="name", in="query", @OA\Schema(type="string"), description="配置名字"),
     *     @OA\Parameter(name="field", in="query", @OA\Schema(type="string", format="date"), description="英文标识"),
     *     @OA\Parameter(name="edit_input", in="query", @OA\Schema(type="string", format="date"), description="输入框类型。包括：text文本，radio单选，checkbox多选，date日期，日期时间datetime，file单文件，files多文件上传"),
     *     @OA\Parameter(name="rule", in="query", @OA\Schema(type="string", format="date"), description="检测规则，多个英文逗号分隔。包括：required"),
     *     @OA\Parameter(name="sort", in="query", @OA\Schema(type="string", format="date"), description="排序"),
     *     @OA\Parameter(name="course_id", in="query", @OA\Schema(type="string", format="date"), description="课程id"),
     *     @OA\Parameter(name="help", in="query", @OA\Schema(type="string", format="date"), description="提示文字"),
     *     @OA\Parameter(name="select_item", in="query", @OA\Schema(type="string", format="date"), description="数组，选项文字"),
     *     @OA\Parameter(name="need_fill", in="query", @OA\Schema(type="string", format="date"), description="是否需要填写0否1是"),
     *     @OA\Parameter(name="belong_user", in="query", @OA\Schema(type="string", format="date"), description="是否属于用户数据0否1是"),
     *     @OA\Response(
     *         response=200,
     *         description="操作成功"
     *     )
     * )
     */
    public function save()
    {
        try {
            $model = \Illuminate\Support\Facades\DB::transaction(function () {
                $input = request()->all();
                $model = !empty($input['id']) ? CourseForm::whereKey($input['id'])->lockForUpdate()->firstOrFail() : new CourseForm();
                $courseId = $model->course_id ?? ($input['course_id'] ?? null);
                if (!$courseId || !\App\Models\Course::whereKey($courseId)->exists()) throw new \InvalidArgumentException('课程不存在');
                $data = array_intersect_key($input, array_flip(['name', 'field', 'edit_input', 'rule', 'sort', 'help', 'select_item', 'need_fill', 'belong_user', 'belong_user_table', 'config']));
                $data = \App\Services\Course\CourseFormSchema::validateDefinition(array_replace($model->toArray(), $data, ['course_id' => $courseId]));
                if ($model->exists && \App\Models\CourseSign::where('course_id', $courseId)->exists()) {
                    foreach (['field', 'edit_input', 'belong_user', 'belong_user_table'] as $key) if ((string) ($data[$key] ?? '') !== (string) ($model->$key ?? '')) throw new \InvalidArgumentException('已有报名，不能修改字段标识、类型或学员关联；请新建字段');
                    $oldKeys = array_map('strval', array_column($model->select_item ?: [], 'key'));
                    $newKeys = array_map('strval', array_column($data['select_item'], 'key'));
                    if (array_diff($oldKeys, $newKeys)) throw new \InvalidArgumentException('已有报名，不能删除或修改已有选项的键；可以新增选项或调整顺序');
                }
                $others = CourseForm::where('course_id', $courseId)->where('id', '!=', $model->id ?? 0)->get()->toArray();
                if (in_array($data['field'], array_column($others, 'field'), true)) throw new \InvalidArgumentException('同一课程的字段标识不能重复');
                $collection = array_merge($others, [$data + ['id' => $model->id ?? PHP_INT_MAX]]);
                usort($collection, fn ($a, $b) => [($a['sort'] ?? 1), ($a['id'] ?? PHP_INT_MAX)] <=> [($b['sort'] ?? 1), ($b['id'] ?? PHP_INT_MAX)]);
                \App\Services\Survey\SurveySchema::validateConditions(array_map([\App\Services\Course\CourseFormSchema::class, 'field'], $collection));
                if (!$model->exists) { $data['admin_id'] = $this->getUserId(); $data['department_id'] = $this->getUser()->department_id; }
                $model->fill(array_intersect_key($data, array_flip(['course_id', 'admin_id', 'department_id', 'name', 'field', 'edit_input', 'rule', 'sort', 'help', 'select_item', 'need_fill', 'belong_user', 'belong_user_table', 'config'])));
                $model->save();
                return $model;
            });
            return $this->success($model);
        } catch (\InvalidArgumentException $error) { return $this->fail([ResponseCode::ERROR_PARAMETER, $error->getMessage()]); }
    }

    /**
     * @OA\Get(
     *     path="/api/admin/course-forms/destroy",
     *     tags={"课程表单"},
     *     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()
    {
        $model = CourseForm::findOrFail(request('id'));
        if (\App\Models\CourseSign::where('course_id', $model->course_id)->exists()) return $this->fail([ResponseCode::ERROR_BUSINESS, '已有报名，不能删除字段；请使用新课程或新表单']);
        foreach (CourseForm::where('course_id', $model->course_id)->get() as $field) {
            if (($field->config['visible_when']['field'] ?? null) === $model->field) return $this->fail([ResponseCode::ERROR_BUSINESS, '该字段被显示条件引用，请先调整条件']);
        }
        return parent::destroy();
    }

    /**
     * @OA\Post(
     *     path="/api/admin/course-forms/excel-show",
     *     tags={"课程表单"},
     *     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/course-forms/import",
     *     tags={"课程表单"},
     *     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()
    {
        return parent::import();
    }

    /**
     * @OA\Get(
     *     path="/api/admin/course-forms/clone",
     *     tags={"课程表单"},
     *     summary="克隆表单",
     *     @OA\Parameter(name="token", in="query", @OA\Schema(type="string"), required=true, description="验证token"),
     *     @OA\Parameter(name="from_course_id", in="query", @OA\Schema(type="string"), description="来源课程id"),
     *     @OA\Parameter(name="to_course_id", in="query", @OA\Schema(type="string", format="date"), description="目标课程id"),
     *     @OA\Response(
     *         response=200,
     *         description="操作成功"
     *     )
     * )
     */
    public function clone()
    {
        $all = \request()->all();
        $messages = [
            'from_course_id.required' => '来源Id必填',
            'to_course_id.required' => '目标Id必填',
        ];
        $validator = Validator::make($all, [
            'from_course_id' => 'required',
            'to_course_id' => 'required'
        ], $messages);
        if ($validator->fails()) {
            return $this->fail([ResponseCode::ERROR_PARAMETER, implode(',', $validator->errors()->all())]);
        }
        if (!\App\Models\Course::whereKey($all['from_course_id'])->exists() || !\App\Models\Course::whereKey($all['to_course_id'])->exists() || !CourseForm::where('course_id', $all['from_course_id'])->exists()) return $this->fail([ResponseCode::ERROR_PARAMETER, '来源或目标课程不存在，或来源表单为空']);
        if (\App\Models\CourseSign::where('course_id', $all['to_course_id'])->exists()) return $this->fail([ResponseCode::ERROR_BUSINESS, '当前课程已有人员报名，不可克隆覆盖']);
        if ((string) $all['from_course_id'] === (string) $all['to_course_id']) return $this->fail([ResponseCode::ERROR_PARAMETER, '不能克隆到原课程']);
        \Illuminate\Support\Facades\DB::transaction(function () use ($all) {
            CourseForm::where('course_id', $all['to_course_id'])->delete();
            foreach (CourseForm::where('course_id', $all['from_course_id'])->orderBy('sort')->orderBy('id')->get() as $fromForm) {
                $copy = $fromForm->replicate();
                $copy->course_id = $all['to_course_id'];
                $copy->save();
            }
        });
        return $this->success('克隆成功');
    }

}