<?php
// +----------------------------------------------------------------------
// | Niucloud-admin 企业快速开发的多应用管理平台
// +----------------------------------------------------------------------

namespace app\api\controller\student;

use core\base\BaseApiController;
use app\service\api\student\ContractService;

/**
 * 学员合同管理控制器
 */
class StudentContract extends BaseApiController
{
    /**
     * 获取学员合同列表
     * @return \think\Response
     */
    public function lists()
    {
        $data = $this->request->params([
            ['student_id', 0],
            ['status', ''],
            ['page', 1],
            ['limit', 10]
        ]);

        if (empty($data['student_id'])) {
            return fail('学员ID不能为空');
        }

        return success((new ContractService())->getContractList($data));
    }

    /**
     * 获取合同详情
     * @return \think\Response
     */
    public function info()
    {
        $data = $this->request->params([
            ['contract_id', 0],
            ['student_id', 0]
        ]);

        if (empty($data['contract_id']) || empty($data['student_id'])) {
            return fail('参数错误');
        }

        return success((new ContractService())->getContractDetail($data['contract_id'], $data['student_id']));
    }

    /**
     * 获取合同签署表单配置
     * @return \think\Response
     */
    public function getSignForm()
    {
        $data = $this->request->params([
            ['contract_id', 0],
            ['student_id', 0]
        ]);

        if (empty($data['contract_id']) || empty($data['student_id'])) {
            return fail('参数错误');
        }

        return success((new ContractService())->getSignForm($data['contract_id'], $data['student_id']));
    }

    /**
     * 提交合同签署
     * @return \think\Response
     */
    public function signContract()
    {
        $data = $this->request->params([
            ['contract_id', 0],
            ['student_id', 0],
            ['form_data', []],
            ['signature_image', '']
        ]);

        if (empty($data['contract_id']) || empty($data['student_id'])) {
            return fail('参数错误');
        }

        if (empty($data['form_data']) && empty($data['signature_image'])) {
            return fail('请填写必要信息或提供签名');
        }

        return success((new ContractService())->signContract($data));
    }

    /**
     * 下载合同文件
     * @return \think\Response
     */
    public function downloadContract()
    {
        $data = $this->request->params([
            ['contract_id', 0],
            ['student_id', 0]
        ]);

        if (empty($data['contract_id']) || empty($data['student_id'])) {
            return fail('参数错误');
        }

        return success((new ContractService())->downloadContract($data['contract_id'], $data['student_id']));
    }

    /**
     * 获取学员基本信息
     * @return \think\Response
     */
    public function getStudentInfo()
    {
        $data = $this->request->params([
            ['student_id', 0]
        ]);

        if (empty($data['student_id'])) {
            return fail('学员ID不能为空');
        }

        return success((new ContractService())->getStudentInfo($data['student_id']));
    }

    /**
     * 直接下载合同文件
     * @return \think\Response
     */
    public function downloadFile()
    {
        $data = $this->request->params([
            ['contract_id', 0],
            ['student_id', 0]
        ]);

        if (empty($data['contract_id']) || empty($data['student_id'])) {
            return fail('参数错误');
        }

        try {
            $fileInfo = (new ContractService())->downloadContract($data['contract_id'], $data['student_id']);
            
            // 构建文件的实际路径
            $filePath = '';
            if ($fileInfo['file_type'] === 'signed') {
                // 已签署文档路径
                $contractSign = \think\facade\Db::table('school_contract_sign')
                    ->where([
                        ['contract_id', '=', $data['contract_id']],
                        ['student_id', '=', $data['student_id']],
                        ['deleted_at', '=', 0]
                    ])
                    ->find();
                $filePath = public_path() . '/upload/' . $contractSign['sign_file'];
            } else {
                // 模板文档路径
                $contract = \think\facade\Db::table('school_contract')
                    ->where('id', $data['contract_id'])
                    ->find();
                $filePath = public_path() . '/upload/' . $contract['contract_template'];
            }

            // 检查文件是否存在
            if (!file_exists($filePath)) {
                return fail('文件不存在');
            }

            // 设置下载响应头
            $response = response()->create('', 'html');
            $response->header([
                'Content-Type' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
                'Content-Disposition' => 'attachment; filename=' . urlencode($fileInfo['file_name']),
                'Content-Length' => filesize($filePath),
                'Cache-Control' => 'private',
                'Pragma' => 'private',
                'Expires' => 'Mon, 26 Jul 1997 05:00:00 GMT'
            ]);

            // 输出文件内容
            $response->data(file_get_contents($filePath));
            
            return $response;

        } catch (\Exception $e) {
            return fail('下载失败：' . $e->getMessage());
        }
    }
}