From d2154c82ab4dff045a505d6adbe05dfe68a3cb4d Mon Sep 17 00:00:00 2001
From: Charlotte Croce <charlottecroce@outlook.com>
Date: Sun, 20 Apr 2025 17:34:03 -0400
Subject: [PATCH] create CLI logo

---
 src/fylgja-cli.js     |  15 ++----
 src/logo.js           |   0
 src/utils/cli-logo.js | 105 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 108 insertions(+), 12 deletions(-)
 delete mode 100644 src/logo.js
 create mode 100644 src/utils/cli-logo.js

diff --git a/src/fylgja-cli.js b/src/fylgja-cli.js
index 70b7b15..db63a7d 100644
--- a/src/fylgja-cli.js
+++ b/src/fylgja-cli.js
@@ -13,6 +13,8 @@ const { handleCommand: handleAlerts } = require('./handlers/alerts/alerts_handle
 const { handleCommand: handleCase } = require('./handlers/case/case_handler');
 const { handleCommand: handleConfig } = require('./handlers/config/config_handler');
 const { handleCommand: handleStats } = require('./handlers/stats/stats_handler');
+const { generateGradientLogo } = require('./utils/cli-logo');
+
 const readline = require('readline');
 
 
@@ -87,17 +89,6 @@ try {
 
 const FILE_NAME = 'fylgja-cli.js';
 
-// ASCII art logo for the CLI
-const ASCII_LOGO = `
-░▒▓████████▓▒░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░      ░▒▓██████▓▒░       ░▒▓█▓▒░░▒▓██████▓▒░  
-░▒▓█▓▒░      ░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░     ░▒▓█▓▒░░▒▓█▓▒░      ░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░ 
-░▒▓█▓▒░      ░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░     ░▒▓█▓▒░             ░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░ 
-░▒▓██████▓▒░  ░▒▓██████▓▒░░▒▓█▓▒░     ░▒▓█▓▒▒▓███▓▒░      ░▒▓█▓▒░▒▓████████▓▒░ 
-░▒▓█▓▒░         ░▒▓█▓▒░   ░▒▓█▓▒░     ░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░ 
-░▒▓█▓▒░         ░▒▓█▓▒░   ░▒▓█▓▒░     ░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░ 
-░▒▓█▓▒░         ░▒▓█▓▒░   ░▒▓████████▓▒░▒▓██████▓▒░ ░▒▓██████▓▒░░▒▓█▓▒░░▒▓█▓▒░ 
-`;
-
 // Command history array
 let commandHistory = [];
 let historyIndex = -1;
@@ -679,7 +670,7 @@ CLI Commands:
  * Start the CLI application
  */
 function startCLI() {
-  console.log(ASCII_LOGO);
+  console.log(generateGradientLogo());
   console.log(`Fylgja CLI v${version} - Interactive SIEM Management Tool`);
   console.log(`Type 'help' for usage information or 'exit' to quit\n`);
 
diff --git a/src/logo.js b/src/logo.js
deleted file mode 100644
index e69de29..0000000
diff --git a/src/utils/cli-logo.js b/src/utils/cli-logo.js
new file mode 100644
index 0000000..70c887f
--- /dev/null
+++ b/src/utils/cli-logo.js
@@ -0,0 +1,105 @@
+/**
+ * cli-logo.js
+ * 
+ * Gradient-colored ASCII logo for CLI
+ */
+
+// Define the ASCII logo
+const logoLines = [
+    '░▒▓████████▓▒░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░      ░▒▓██████▓▒░       ░▒▓█▓▒░░▒▓██████▓▒░  ',
+    '░▒▓█▓▒░      ░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░     ░▒▓█▓▒░░▒▓█▓▒░      ░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░ ',
+    '░▒▓█▓▒░      ░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░     ░▒▓█▓▒░             ░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░ ',
+    '░▒▓██████▓▒░  ░▒▓██████▓▒░░▒▓█▓▒░     ░▒▓█▓▒▒▓███▓▒░      ░▒▓█▓▒░▒▓████████▓▒░ ',
+    '░▒▓█▓▒░         ░▒▓█▓▒░   ░▒▓█▓▒░     ░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░ ',
+    '░▒▓█▓▒░         ░▒▓█▓▒░   ░▒▓█▓▒░     ░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░ ',
+    '░▒▓█▓▒░         ░▒▓█▓▒░   ░▒▓████████▓▒░▒▓██████▓▒░ ░▒▓██████▓▒░░▒▓█▓▒░░▒▓█▓▒░ '
+  ];
+  
+  // Colors (hex codes without # prefix)
+  const colors = {
+    teal: '7DE2D1',
+    darkTeal: '339989',
+    offWhite: 'FFFAFB',
+    lavender: '8F95D3'
+  };
+  
+  // Convert hex to RGB
+  function hexToRgb(hex) {
+    const r = parseInt(hex.substring(0, 2), 16);
+    const g = parseInt(hex.substring(2, 4), 16);
+    const b = parseInt(hex.substring(4, 6), 16);
+    return { r, g, b };
+  }
+  
+  // Linear interpolation between two colors
+  function interpolateColor(color1, color2, factor) {
+    return {
+      r: Math.round(color1.r + factor * (color2.r - color1.r)),
+      g: Math.round(color1.g + factor * (color2.g - color1.g)),
+      b: Math.round(color1.b + factor * (color2.b - color1.b))
+    };
+  }
+  
+  // Get ANSI true color escape code
+  function getTrueColorCode(r, g, b) {
+    return `\x1b[38;2;${r};${g};${b}m`;
+  }
+  
+  // Get ANSI 256-color escape code (fallback for terminals without true color support)
+  function get256ColorCode(r, g, b) {
+    // Convert RGB to approximate 256-color code
+    const ansi256 = 16 + 
+                   36 * Math.round(r * 5 / 255) + 
+                   6 * Math.round(g * 5 / 255) + 
+                   Math.round(b * 5 / 255);
+    
+    return `\x1b[38;5;${ansi256}m`;
+  }
+  
+  /**
+   * Generate a 2D gradient (both horizontal and vertical gradients combined)
+   * This creates the most dramatic effect but is more processing-intensive
+   * @returns {string} The gradient-colored logo
+   */
+  function generateGradientLogo() {
+    // Convert hex colors to RGB (corners of the 2D gradient)
+    const topLeft = hexToRgb(colors.teal);
+    const topRight = hexToRgb(colors.darkTeal);
+    const bottomLeft = hexToRgb(colors.offWhite);
+    const bottomRight = hexToRgb(colors.lavender);
+    
+    // Initialize gradient logo
+    let gradientLogo = '\n';
+    
+    // Process each line
+    for (let y = 0; y < logoLines.length; y++) {
+      const line = logoLines[y];
+      const verticalPosition = y / (logoLines.length - 1);
+      
+      // Interpolate top and bottom colors
+      const leftColor = interpolateColor(topLeft, bottomLeft, verticalPosition);
+      const rightColor = interpolateColor(topRight, bottomRight, verticalPosition);
+      
+      // Process each character in the line
+      for (let x = 0; x < line.length; x++) {
+        const char = line[x];
+        const horizontalPosition = x / (line.length - 1);
+        
+        // Interpolate between left and right colors
+        const color = interpolateColor(leftColor, rightColor, horizontalPosition);
+        
+        // Apply the color and add the character
+        gradientLogo += getTrueColorCode(color.r, color.g, color.b) + char;
+      }
+      
+      // Reset color and add newline
+      gradientLogo += '\x1b[0m\n';
+    }
+    
+    return gradientLogo;
+  }
+  
+  // Export the gradient logo functions
+  module.exports = {
+    generateGradientLogo,
+  };
\ No newline at end of file