<?php

declare(strict_types=1);

namespace app\admin\controller\Cms\Domain;

use app\admin\BaseController;
use think\facade\Db;
use think\Request;
use think\facade\Session;

/**
 * 租户域名绑定控制器
 */
class TenantDomainController extends BaseController
{
    /**
     * 获取租户域名列表（管理员查看所有）
     */
    public function index(Request $request)
    {
        $page = $request->param('page', 1, 'int');
        $pageSize = $request->param('pageSize', 10, 'int');
        $tenantId = $request->param('tenant_id', 0, 'int');
        $status = $request->param('status', '');
        $subDomain = $request->param('sub_domain', '');

        $where = [['delete_time', '=', null]];
        
        if ($tenantId > 0) {
            $where[] = ['tenant_id', '=', $tenantId];
        }
        if ($status !== '' && $status !== null) {
            $where[] = ['status', '=', $status];
        }
        if ($subDomain) {
            $where[] = ['sub_domain', 'like', "%$subDomain%"];
        }

        $list = Db::name('mete_tenant_domain')
            ->where($where)
            ->page($page, $pageSize)
            ->order('id', 'desc')
            ->select()
            ->toArray();
            
        $total = Db::name('mete_tenant_domain')
            ->where($where)
            ->count();

        // 获取租户名称
        $tenantIds = array_column($list, 'tenant_id');
        $tenants = [];
        if ($tenantIds) {
            $tenantList = Db::name('mete_tenant')
                ->whereIn('id', $tenantIds)
                ->select()
                ->toArray();
            $tenants = array_column($tenantList, null, 'id');
        }

        // 附加租户名称
        foreach ($list as &$item) {
            $item['tenant_name'] = $tenants[$item['tenant_id']]['tenant_name'] ?? '';
        }

        return json([
            'code' => 200,
            'msg' => 'success',
            'data' => [
                'list' => $list,
                'total' => $total
            ]
        ]);
    }

    /**
     * 获取当前租户的域名列表（租户端）
     */
    public function myDomains(Request $request)
    {
        $tid = $request->param('tid', 0, 'int');
        
        if ($tid <= 0) {
            return json([
                'code' => 400,
                'msg' => '租户ID不能为空'
            ]);
        }

        $list = Db::name('mete_tenant_domain')
            ->where('tenant_id', $tid)
            ->where('delete_time', null)
            ->order('id', 'desc')
            ->select()
            ->toArray();

        return json([
            'code' => 200,
            'msg' => 'success',
            'data' => $list
        ]);
    }

    /**
     * 租户申请二级域名
     */
    public function apply(Request $request)
    {
        $tid = $request->param('tenant_id', 0, 'int');
        $subDomain = $request->param('sub_domain', '');
        $mainDomain = $request->param('main_domain', '');

        if ($tid <= 0) {
            return json([
                'code' => 400,
                'msg' => '租户ID不能为空'
            ]);
        }

        if (empty($subDomain)) {
            return json([
                'code' => 400,
                'msg' => '二级域名前缀不能为空'
            ]);
        }

        if (empty($mainDomain)) {
            return json([
                'code' => 400,
                'msg' => '请选择主域名'
            ]);
        }

        // 验证域名格式（只能包含字母、数字、连字符）
        if (!preg_match('/^[a-zA-Z0-9][a-zA-Z0-9-]{0,61}[a-zA-Z0-9]$/', $subDomain)) {
            return json([
                'code' => 400,
                'msg' => '二级域名前缀格式不正确'
            ]);
        }

        // 检查主域名是否存在且启用
        $mainDomainInfo = Db::name('mete_system_domain_pool')
            ->where('main_domain', $mainDomain)
            ->where('status', 1)
            ->where('delete_time', null)
            ->find();
            
        if (!$mainDomainInfo) {
            return json([
                'code' => 400,
                'msg' => '主域名不存在或已禁用'
            ]);
        }

        // 检查二级域名是否已被使用
        $exists = Db::name('mete_tenant_domain')
            ->where('sub_domain', $subDomain)
            ->where('main_domain', $mainDomain)
            ->where('delete_time', null)
            ->find();
            
        if ($exists) {
            return json([
                'code' => 400,
                'msg' => '该二级域名已被使用'
            ]);
        }

        $fullDomain = $subDomain . '.' . $mainDomain;
        $now = date('Y-m-d H:i:s');
        
        $id = Db::name('mete_tenant_domain')->insertGetId([
            'tenant_id' => $tid,
            'sub_domain' => $subDomain,
            'main_domain' => $mainDomain,
            'full_domain' => $fullDomain,
            'status' => 0, // 审核中
            'create_time' => $now,
            'update_time' => $now
        ]);

        return json([
            'code' => 200,
            'msg' => '申请提交成功，等待审核',
            'data' => ['id' => $id]
        ]);
    }

    /**
     * 审核租户域名（通过/拒绝）
     */
    public function audit(Request $request)
    {
        $id = $request->param('id', 0, 'int');
        $action = $request->param('action', ''); // 'approve' 或 'reject'

        if ($id <= 0) {
            return json([
                'code' => 400,
                'msg' => '参数错误'
            ]);
        }

        $domain = Db::name('mete_tenant_domain')
            ->where('id', $id)
            ->find();
            
        if (!$domain) {
            return json([
                'code' => 404,
                'msg' => '域名不存在'
            ]);
        }

        if ($domain['status'] != 0) {
            return json([
                'code' => 400,
                'msg' => '该域名已审核过了'
            ]);
        }

        $newStatus = $action === 'approve' ? 1 : 2; // 1-已生效 2-已拒绝
        
        Db::name('mete_tenant_domain')
            ->where('id', $id)
            ->update([
                'status' => $newStatus,
                'update_time' => date('Y-m-d H:i:s')
            ]);

        $msg = $action === 'approve' ? '审核通过' : '已拒绝';
        
        return json([
            'code' => 200,
            'msg' => $msg
        ]);
    }

    /**
     * 禁用/启用租户域名
     */
    public function toggleStatus(Request $request)
    {
        $id = $request->param('id', 0, 'int');
        
        if ($id <= 0) {
            return json([
                'code' => 400,
                'msg' => '参数错误'
            ]);
        }

        $domain = Db::name('mete_tenant_domain')
            ->where('id', $id)
            ->find();
            
        if (!$domain) {
            return json([
                'code' => 404,
                'msg' => '域名不存在'
            ]);
        }

        // 只有已生效的域名才能被禁用
        if ($domain['status'] != 1) {
            return json([
                'code' => 400,
                'msg' => '只有已生效的域名才能被禁用'
            ]);
        }

        // 切换为禁用状态
        Db::name('mete_tenant_domain')
            ->where('id', $id)
            ->update([
                'status' => 2,
                'update_time' => date('Y-m-d H:i:s')
            ]);

        return json([
            'code' => 200,
            'msg' => '已禁用'
        ]);
    }

    /**
     * 删除租户域名（软删除）
     */
    public function delete($id)
    {
        if ($id <= 0) {
            return json([
                'code' => 400,
                'msg' => '参数错误'
            ]);
        }

        Db::name('mete_tenant_domain')
            ->where('id', $id)
            ->update([
                'delete_time' => date('Y-m-d H:i:s')
            ]);

        return json([
            'code' => 200,
            'msg' => '删除成功'
        ]);
    }
}