From aa42223fc93b578a73ddf6f4de697b3c0c8522a4 Mon Sep 17 00:00:00 2001
From: Adrian Victor <adrianvictor@disroot.org>
Date: Fri, 17 Jul 2026 11:08:49 -0300
Subject: [PATCH] Add sliding and sliding animations on mobile.

---
 index.html |   4 +--
 js/app.js  | 102 ++++++++++++++++++++++++++++++++++++++++++++++++++---
 js/ui.js   |   1 +
 style.css  |  69 +++++++++++++++++++++++++++---------
 4 files changed, 153 insertions(+), 23 deletions(-)

diff --git a/index.html b/index.html
index ebe1c84..f8bd731 100644
--- a/index.html
+++ b/index.html
@@ -21,7 +21,7 @@
           }, 100);
         });
     </script>
-    <div class="app-container">
+    <div class="app-container no-active-chat">
         <!-- Sidebar -->
         <aside class="sidebar">
             <header class="sidebar-header">
@@ -83,7 +83,7 @@
             <div class="active-chat-container hidden" id="active-chat-container">
                 <header class="chat-header">
                     <div class="active-contact-info">
-                        <!-- <button class="icon-btn back-btn" id="back-to-sidebar"><i data-lucide="arrow-left"></i></button> -->
+                        <!-- <button class="icon-btn back-btn mif-arrow-left mif-2x" id="back-to-sidebar" title="Back to chats"></button> -->
                         <div class="avatar active-avatar" id="active-chat-avatar">C</div>
                         <div>
                             <h3 id="active-chat-name">Contact Name</h3>
diff --git a/js/app.js b/js/app.js
index 9640f0f..3ca0ef6 100644
--- a/js/app.js
+++ b/js/app.js
@@ -27,6 +27,15 @@ function loadChats() {
         elements.chatsLoader.classList.remove('hidden');
         fetchChats().then(() => { 
             ui.renderChatList(getChats(), activeChatState, selectChat);
+            
+            const hash = window.location.hash;
+            if (hash && hash.startsWith('#chat-')) {
+                const chatId = hash.replace('#chat-', '');
+                const chat = getChats().find(c => c.id === chatId);
+                if (chat) {
+                    selectChat(chat, true, false);
+                }
+            }
         });
     } catch (error) {
         console.error('Failed to load chats:', error);
@@ -44,11 +53,67 @@ function loadChats() {
     }
 }
 
+let isScrollingProgrammatically = false;
+let scrollTimeout = null;
+
+function scrollToChat(smooth = true) {
+    isScrollingProgrammatically = true;
+    elements.appContainer.scrollTo({
+        left: elements.appContainer.clientWidth,
+        behavior: smooth ? 'smooth' : 'auto'
+    });
+    setTimeout(() => { isScrollingProgrammatically = false; }, smooth ? 400 : 50);
+}
+
+function scrollToList(smooth = true) {
+    isScrollingProgrammatically = true;
+    elements.appContainer.scrollTo({
+        left: 0,
+        behavior: smooth ? 'smooth' : 'auto'
+    });
+    setTimeout(() => { isScrollingProgrammatically = false; }, smooth ? 400 : 50);
+}
+
 function setupEventListeners() {
+    if (!window.location.hash) {
+        window.location.hash = '';
+    }
+    
+    window.addEventListener('hashchange', () => {
+        const hash = window.location.hash;
+        if (hash && hash.startsWith('#chat-')) {
+            const chatId = hash.replace('#chat-', '');
+            const chat = getChats().find(c => c.id === chatId);
+            if (chat) {
+                selectChat(chat, true);
+            }
+        } else {
+            closeActiveChat(true);
+        }
+    });
+
+    elements.appContainer.addEventListener('scroll', () => {
+        if (window.innerWidth > 768) return;
+        if (isScrollingProgrammatically) return;
+        
+        clearTimeout(scrollTimeout);
+        scrollTimeout = setTimeout(() => {
+            const scrollLeft = elements.appContainer.scrollLeft;
+            const width = elements.appContainer.clientWidth;
+            
+            if (scrollLeft < width * 0.2) {
+                // User swiped back to the list view
+                if (activeChatState) {
+                    closeActiveChat(false);
+                }
+            }
+        }, 100);
+    });
+
     document.addEventListener('keydown', (e) => {
         if (e.code == "Escape") {
             e.preventDefault();
-            ui.toggleChatState();
+            closeActiveChat(false);
         }
     });
     
@@ -94,8 +159,7 @@ function setupEventListeners() {
     })
     
     elements.backToSidebarBtn.addEventListener('click', () => {
-        elements.sidebar.classList.remove('hidden');
-        elements.activeChatContainer.classList.add('hidden');
+        closeActiveChat(false);
     });
     
     elements.settingsIconBtn.addEventListener('click', openSettings);
@@ -155,7 +219,7 @@ async function handleIncomingMessage(msg) {
     }
 }
 
-async function selectChat(chat) {
+async function selectChat(chat, isPopState = false, smoothScroll = true) {
     activeChatState = chat;
     
     chat.unreadCount = 0;
@@ -179,8 +243,14 @@ async function selectChat(chat) {
         </span>
     </div>`;
     
+    elements.appContainer.classList.remove('no-active-chat');
+    
     if (window.innerWidth <= 768) {
-        elements.sidebar.classList.add('hidden');
+        scrollToChat(smoothScroll);
+    }
+    
+    if (!isPopState && window.location.hash !== `#chat-${chat.id}`) {
+        window.location.hash = `chat-${chat.id}`;
     }
     
     try {
@@ -193,6 +263,28 @@ async function selectChat(chat) {
     }
 }
 
+async function closeActiveChat(isPopState = false) {
+    activeChatState = null;
+    
+    if (window.innerWidth <= 768) {
+        scrollToList();
+        setTimeout(() => {
+            if (!activeChatState) {
+                elements.appContainer.classList.add('no-active-chat');
+                ui.toggleChatState(false);
+            }
+        }, 350);
+    } else {
+        ui.toggleChatState(false);
+    }
+    
+    if (!isPopState) {
+        if (window.location.hash.startsWith('#chat-')) {
+            history.back();
+        }
+    }
+}
+
 async function sendMessage() {
     const text = elements.messageInput.value.trim();
     if (!text || !activeChatState) return;
diff --git a/js/ui.js b/js/ui.js
index 23c3fba..28adc58 100644
--- a/js/ui.js
+++ b/js/ui.js
@@ -19,6 +19,7 @@ export const elements = {
     messageInput: document.getElementById('message-input'),
     backToSidebarBtn: document.querySelector('.chat-header'),
     sidebar: document.querySelector('.sidebar'),
+    appContainer: document.querySelector('.app-container'),
     settingsModal: document.getElementById('settings-modal'),
     settingsIconBtn: document.querySelector('.header-actions button[title="Settings"]'),
     cancelSettingsBtn: document.getElementById('cancel-settings'),
diff --git a/style.css b/style.css
index 3ea409c..659fe7c 100644
--- a/style.css
+++ b/style.css
@@ -29,11 +29,21 @@
     user-select: none;
 }
 
+html, body {
+    margin: 0;
+    padding: 0;
+    width: 100%;
+    height: 100%;
+    height: 100dvh;
+    overflow: hidden;
+    position: fixed;
+    top: 0;
+    left: 0;
+}
+
 body {
     background-color: var(--bg-main);
     color: var(--text-primary);
-    height: 100vh;
-    overflow: hidden;
     background-image: 
         radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.12) 0px, transparent 50%),
         radial-gradient(at 100% 100%, rgba(168, 85, 247, 0.12) 0px, transparent 50%);
@@ -70,10 +80,11 @@ input:focus {
 
 .app-container {
     display: flex;
-    width: 100vw;
-    height: 100vh;
+    width: 100%;
+    height: 100%;
     overflow: hidden;
     backdrop-filter: var(--glass-blur);
+    position: relative;
 }
 
 .app-name {
@@ -727,33 +738,59 @@ input:focus {
     display: none !important;
 }
 
-/* Responsive design */
 @media (max-width: 768px) {
     .app-container {
-        position: relative;
+        width: 100%;
+        height: 100%;
+        display: flex;
+        flex-direction: row;
+        overflow-x: auto;
+        overflow-y: hidden;
+        scroll-snap-type: x mandatory;
+        scroll-behavior: smooth;
+        -webkit-overflow-scrolling: touch;
+        
+        /* Hide scrollbars */
+        scrollbar-width: none; /* Firefox */
+        -ms-overflow-style: none;  /* IE and Edge */
+    }
+    
+    .app-container::-webkit-scrollbar {
+        display: none; /* Chrome, Safari, Opera */
     }
     
     .sidebar {
         width: 100%;
-        position: absolute;
-        left: 0;
-        top: 0;
+        flex: 0 0 100%;
+        position: relative;
+        left: auto;
+        top: auto;
         height: 100%;
-        z-index: 10;
-    }
-    
-    .sidebar.hidden {
-        transform: translateX(-100%);
-        display: flex !important;
+        z-index: 1;
+        scroll-snap-align: start;
+        scroll-snap-stop: always;
     }
     
     .chat-area {
         width: 100%;
+        flex: 0 0 100%;
+        position: relative;
+        left: auto;
+        top: auto;
+        height: 100%;
+        z-index: 1;
+        scroll-snap-align: start;
+        scroll-snap-stop: always;
     }
     
+    /* Disable scrolling to active chat if none is selected */
+    /* .app-container.no-active-chat .chat-area {
+        display: none !important;
+    } */
+    
     .back-btn {
         display: flex;
-        margin-right: 8px;
+        margin-right: 12px;
     }
 
     .message-group {