feat(paradiz-web): persist client chat history in localStorage

integrations/paradiz-web/wordpress-plugin/paradiz-web-chat/chat.js

@@ -9,14 +9,51 @@
 
     if(!fab || !modal || !closeBtn || !sendBtn || !input || !log) return;
 
+    const STORAGE_KEY = 'paradiz_web_chat_history_v1';
+    const MAX_MESSAGES = 80;
+
+    const saveHistory = () => {
+      try {
+        const items = Array.from(log.querySelectorAll('.paradiz-msg')).map((el) => ({
+          text: el.textContent || '',
+          type: el.classList.contains('paradiz-user') ? 'user' : 'bot'
+        }));
+        const trimmed = items.slice(-MAX_MESSAGES);
+        localStorage.setItem(STORAGE_KEY, JSON.stringify(trimmed));
+      } catch(_) {}
+    };
+
+    const restoreHistory = () => {
+      try {
+        const raw = localStorage.getItem(STORAGE_KEY);
+        if(!raw) return false;
+        const arr = JSON.parse(raw);
+        if(!Array.isArray(arr) || !arr.length) return false;
+        log.innerHTML = '';
+        for(const item of arr){
+          const p = document.createElement('p');
+          p.className = 'paradiz-msg ' + (item.type === 'user' ? 'paradiz-user' : 'paradiz-bot');
+          p.textContent = String(item.text || '');
+          log.appendChild(p);
+        }
+        log.scrollTop = log.scrollHeight;
+        return true;
+      } catch(_) {
+        return false;
+      }
+    };
+
     const addMsg = (text, type) => {
       const p = document.createElement('p');
       p.className = 'paradiz-msg ' + (type === 'user' ? 'paradiz-user' : 'paradiz-bot');
       p.textContent = text;
       log.appendChild(p);
       log.scrollTop = log.scrollHeight;
+      saveHistory();
     };
 
+    restoreHistory();
+
     fab.addEventListener('click', () => {
       modal.style.display = (modal.style.display === 'block') ? 'none' : 'block';
       if(modal.style.display === 'block') input.focus();
@@ -35,7 +72,11 @@
 
       addMsg('Вы: ' + q, 'user');
       input.value = '';
-      addMsg('Печатают…', 'bot');
+      const typingEl = document.createElement('p');
+      typingEl.className = 'paradiz-msg paradiz-bot';
+      typingEl.textContent = 'Печатают…';
+      log.appendChild(typingEl);
+      log.scrollTop = log.scrollHeight;
 
       try {
         const body = new URLSearchParams();
@@ -51,12 +92,14 @@
         });
 
         const data = await resp.json();
+        if(typingEl && typingEl.parentNode) typingEl.parentNode.removeChild(typingEl);
         if(data && data.success){
           addMsg((data.data && data.data.answer) ? data.data.answer : 'Нет ответа', 'bot');
         } else {
           addMsg((data && data.data && data.data.message) ? data.data.message : 'Ошибка', 'bot');
         }
       } catch (e) {
+        if(typingEl && typingEl.parentNode) typingEl.parentNode.removeChild(typingEl);
         addMsg('Сетевая ошибка: ' + (e && e.message ? e.message : 'unknown'), 'bot');
       }
     };