From 15ec60cdd5ae1673a2abe2b14be0098f99a3d192 Mon Sep 17 00:00:00 2001
From: jinhojang6 <jinho5051@gmail.com>
Date: Wed, 14 Feb 2024 04:34:21 +0900
Subject: [PATCH] feat: implement type effect

---
 src/App.svelte                | 12 +++---
 src/app.css                   | 18 ++++++++-
 src/components/History.svelte | 24 ++++++++----
 src/components/Input.svelte   |  3 ++
 src/utils/commands.ts         | 71 +++++++++++++++++++++++++++++++++--
 5 files changed, 108 insertions(+), 20 deletions(-)

diff --git a/src/App.svelte b/src/App.svelte
index ecae2c1..b4cce5b 100644
--- a/src/App.svelte
+++ b/src/App.svelte
@@ -20,19 +20,19 @@
   class="h-full p-4 overflow-auto text-xs border-2 rounded-md sm:text-sm md:text-base"
   style={`background-color: ${$theme.background}; color: ${$theme.foreground}; border-color: transparent;`}
 >
-
   <History />
 
-  <div class="lex-col md:flex-row">
+  <div id="input" class="flex flex-col md:flex-row">
     <Ps1 />
 
     <Input />
-
-    <div class="buttons-row">{`
+  </div>
+  <div class="buttons-row">
+    {`
+    
 ----------------------------------------------------------------------------
-                        < Apply >           < X >
+                                    < X >
 -----------------------------------------------------------------------------
 `}
-    </div>
   </div>
 </main>
diff --git a/src/app.css b/src/app.css
index a092dc8..dc1cee8 100644
--- a/src/app.css
+++ b/src/app.css
@@ -20,12 +20,16 @@ body {
   background-color: #000099;
 }
 
+.banner {
+  white-space: pre-wrap;
+}
+
 main > div > div:first-child {
   display: none;
 }
 
-main > div:first-child > p {
-  margin-bottom: 24px;
+#input {
+  margin-top: 24px;
 }
 
 .buttons-row {
@@ -34,6 +38,16 @@ main > div:first-child > p {
   white-space: pre-wrap;
 }
 
+.whitespace-pre {
+  white-space: pre-wrap;
+}
+
+.link {
+  color: #828282;
+  text-decoration: underline;
+  cursor: pointer;
+}
+
 ::-webkit-scrollbar {
   width: 5px;
   height: 5px;
diff --git a/src/components/History.svelte b/src/components/History.svelte
index 365759d..dd1cf88 100644
--- a/src/components/History.svelte
+++ b/src/components/History.svelte
@@ -1,15 +1,21 @@
 <script lang="ts">
-  import { history } from '../stores/history';
-  import { theme } from '../stores/theme';
-  import Ps1 from './Ps1.svelte';
+  import { history } from "../stores/history";
+  import { theme } from "../stores/theme";
+  import Ps1 from "./Ps1.svelte";
+
+  function parseTemplateString(templateString: string) {
+    const htmlContent = templateString.replace('<template>', '').replace('</template>', '');
+    return htmlContent;
+  }
 </script>
 
+<p class="banner"></p>
+
 {#each $history as { command, outputs }}
   <div style={`color: ${$theme.foreground}`}>
     <div class="flex-col md:flex-row">
-      
       <Ps1 />
-      
+
       <div class="flex">
         <p class="visible md:hidden">❯</p>
         <p class="px-2">{command}</p>
@@ -17,9 +23,11 @@
     </div>
 
     {#each outputs as output}
-      <p class="whitespace-pre">
-        {output}
-      </p>
+      {#if output.startsWith("<template>")}
+        {@html parseTemplateString(output)}
+      {:else}
+        <p class="whitespace-pre">{output}</p>
+      {/if}
     {/each}
   </div>
 {/each}
diff --git a/src/components/Input.svelte b/src/components/Input.svelte
index e4582b8..d13972b 100644
--- a/src/components/Input.svelte
+++ b/src/components/Input.svelte
@@ -16,8 +16,11 @@
     if ($history.length === 0) {
       const command = commands['banner'] as () => string;
 
+      console.log('command',command);
+
       if (command) {
         const output = command();
+        console.log('output',output);
 
         $history = [...$history, { command: 'banner', outputs: [output] }];
       }
diff --git a/src/utils/commands.ts b/src/utils/commands.ts
index ceb9829..7f5187f 100644
--- a/src/utils/commands.ts
+++ b/src/utils/commands.ts
@@ -9,6 +9,11 @@ export const commands: Record<
   string,
   (args: string[]) => Promise<string> | string
 > = {
+  apply: async () => {
+    const htmlString = "<template>Please email us at <a class=\"link\" href=\"mailto:contact@free.technology\">contact@free.technology</a></template>";
+
+    return htmlString;
+  },
   help: () => "Available commands: " + Object.keys(commands).join(", "),
   hostname: () => hostname,
   whoami: () => "guest",
@@ -111,8 +116,62 @@ export const commands: Record<
       return `curl: could not fetch URL ${url}. Details: ${error}`;
     }
   },
-  banner: () => `
-██████╗ ███████╗██████╗ ██╗██████╗  █████╗ ████████╗██╗  ██╗ ██████╗ ███████╗
+  banner: () => {
+    function displayTextLetterByLetter(
+      elementClass: any,
+      text: any,
+      minDelay = 1,
+      maxDelay = 10
+    ) {
+      const elements = document.getElementsByClassName(elementClass);
+      const element = elements[elements.length - 1]
+      if (!element) return;
+
+      // Append cursor initially
+      const cursor = document.createElement("span");
+      cursor.className = "cursor";
+      element.appendChild(cursor);
+
+      let currentIndex = 0;
+
+      function displayNextLetter() {
+        if (currentIndex < text.length) {
+          let charToAdd = text[currentIndex];
+          if (text.substr(currentIndex, 4) === "<br>") {
+            charToAdd = "<br>";
+            currentIndex += 4;
+          } else {
+            currentIndex++;
+          }
+
+          // Insert the character or <br> before the cursor
+          if (charToAdd === "<br>") {
+            const brElement = document.createElement("br");
+            element?.insertBefore(brElement, cursor);
+          } else {
+            const textNode = document.createTextNode(charToAdd);
+            element?.insertBefore(textNode, cursor);
+          }
+
+          let randomDelay = Math.random() * (maxDelay - minDelay) + minDelay;
+          setTimeout(displayNextLetter, randomDelay);
+        } else {
+          // If all characters are added, remove the cursor
+          cursor.style.display = "none";
+          const baner = document.getElementsByClassName("banner")[0];
+          if (baner) {
+            // delete the banner
+            baner.remove();
+            // add the banner to the history
+            history.update((h) => [...h, { command: "banner", outputs: [text] }]);
+          }
+        }
+      }
+
+      displayNextLetter();
+    }
+    
+    const text = `██████╗ ███████╗██████╗ ██╗██████╗  █████╗ ████████╗██╗  ██╗ ██████╗ ███████╗
 ██╔══██╗██╔════╝██╔══██╗██║██╔══██╗██╔══██╗╚══██╔══╝██║  ██║██╔═══██╗██╔════╝
 ██████╔╝█████╗  ██████╔╝██║██████╔╝███████║   ██║   ███████║██║   ██║███████╗
 ██╔═══╝ ██╔══╝  ██╔══██╗██║██╔═══╝ ██╔══██║   ██║   ██╔══██║██║   ██║╚════██║
@@ -131,6 +190,10 @@ Peripatetic School — simply referred to as the Peripatos after the ancient
 walkway of the Acropolis — was an informal institution of ancient Greece
 where members conducted philosophical and scientific inquiries.
 
-Type 'help' to see list of available commands.
-`,
+Type 'help' to see list of available commands.`;
+
+    displayTextLetterByLetter("banner", text);
+
+    return '';
+  },
 };