增强：聊天室内修改绑定邮箱时强制要求邮件验证码校验，并增加 60 秒发送频率限制防滥发机制

resources/views/chat/partials/toolbar.blade.php

@@ -117,9 +117,21 @@
                     </div>
                     <div style="display:flex; align-items:center; gap:8px;">
                         <label style="font-size:12px; width:50px; text-align:right;">邮箱:</label>
-                        <input id="set-email" type="email" value="{{ Auth::user()->email ?? '' }}" placeholder="选填"
+                        <input id="set-email" type="email" value="{{ Auth::user()->email ?? '' }}"
+                            placeholder="用来找回密码(必填)"
                             style="flex:1; padding:5px; border:1px solid #ccc; border-radius:4px; font-size:12px;">
                     </div>
+                    @if (\App\Models\SysParam::where('alias', 'smtp_enabled')->value('body') === '1')
+                        <div style="display:flex; align-items:center; gap:8px; margin-top:6px;">
+                            <label style="font-size:12px; width:50px; text-align:right;">验证码:</label>
+                            <input id="set-email-code" type="text" placeholder="修改邮箱时必填" maxlength="6"
+                                style="flex:1; padding:5px; border:1px solid #ccc; border-radius:4px; font-size:12px; max-width:100px;">
+                            <button id="btn-send-code" type="button" onclick="sendEmailCode()"
+                                style="padding:5px 10px; border:1px solid #336699; background:#eef5ff; color:#336699; border-radius:4px; font-size:12px; cursor:pointer;">
+                                获取验证码
+                            </button>
+                        </div>
+                    @endif
                 </div>
             </div>
 
@@ -203,6 +215,8 @@
         const profileData = {
             sex: document.getElementById('set-sex').value,
             email: document.getElementById('set-email').value,
+            email_code: document.getElementById('set-email-code') ? document.getElementById('set-email-code')
+                .value : '',
             question: document.getElementById('set-question').value,
             answer: document.getElementById('set-answer').value,
             headface: @json(Auth::user()->usersf ?: '1.gif'),
@@ -229,4 +243,71 @@
             alert('网络异常');
         }
     }
+
+    /**
+     * 发送邮箱验证码 (带有 60s 倒计时机制防灌水)
+     */
+    async function sendEmailCode() {
+        const emailInput = document.getElementById('set-email').value.trim();
+        if (!emailInput) {
+            alert('请先填写邮箱地址后再获取验证码！');
+            return;
+        }
+
+        const btn = document.getElementById('btn-send-code');
+        btn.disabled = true;
+        btn.innerText = '正在发送...';
+        btn.style.opacity = '0.6';
+        btn.style.cursor = 'not-allowed';
+
+        try {
+            const res = await fetch('{{ route('user.send_email_code') }}', {
+                method: 'POST',
+                headers: {
+                    'X-CSRF-TOKEN': document.querySelector('meta[name="csrf-token"]').content,
+                    'Content-Type': 'application/json',
+                    'Accept': 'application/json'
+                },
+                body: JSON.stringify({
+                    email: emailInput
+                })
+            });
+
+            const data = await res.json();
+
+            if (res.ok && data.status === 'success') {
+                alert(data.message || '验证码发送成功，请前往邮箱查收！(有效期5分钟)');
+
+                // 开始 60 秒防暴力点击倒计时
+                let count = 60;
+                btn.innerText = count + 's 后重试';
+                const timer = setInterval(() => {
+                    count--;
+                    if (count <= 0) {
+                        clearInterval(timer);
+                        btn.innerText = '获取验证码';
+                        btn.disabled = false;
+                        btn.style.opacity = '1';
+                        btn.style.cursor = 'pointer';
+                    } else {
+                        btn.innerText = count + 's 后重试';
+                    }
+                }, 1000);
+
+            } else {
+                alert('发送失败: ' + (data.message || '系统繁忙'));
+                // 失败了立刻解除禁用以重新尝试
+                btn.innerText = '获取验证码';
+                btn.disabled = false;
+                btn.style.opacity = '1';
+                btn.style.cursor = 'pointer';
+            }
+        } catch (e) {
+            alert('网络异常，验证码发送请求失败。');
+            btn.innerText = '获取验证码';
+            btn.disabled = false;
+            btn.style.opacity = '1';
+            btn.style.cursor = 'pointer';
+        }
+    }
 </script>