From 613f914589db86de2db0857409684fa1b31c5070 Mon Sep 17 00:00:00 2001
From: Andrew Kingston <aptkingston@ssl-mail.com>
Date: Thu, 6 May 2021 13:58:42 +0100
Subject: [PATCH] Add new file for common svelte actions

---
 packages/builder/src/actions.js | 64 +++++++++++++++++++++++++++++++++
 packages/builder/vite.config.js |  4 +++
 2 files changed, 68 insertions(+)
 create mode 100644 packages/builder/src/actions.js

diff --git a/packages/builder/src/actions.js b/packages/builder/src/actions.js
new file mode 100644
index 0000000000..f465513f21
--- /dev/null
+++ b/packages/builder/src/actions.js
@@ -0,0 +1,64 @@
+export const gradient = (node, config = {}) => {
+  const defaultConfig = {
+    points: 10,
+    saturation: 0.8,
+    lightness: 0.75,
+    softness: 0.8,
+  }
+
+  // Applies a gradient background
+  const createGradient = config => {
+    config = {
+      ...defaultConfig,
+      ...config,
+    }
+    const { saturation, lightness, softness, points } = config
+
+    // Generates a random number between min and max
+    const rand = (min, max) => {
+      return Math.round(min + Math.random() * (max - min))
+    }
+
+    // Generates a random HSL colour using the options specified
+    const randomHSL = () => {
+      const lowerSaturation = Math.min(100, saturation * 100)
+      const upperSaturation = Math.min(100, (saturation + 0.2) * 100)
+      const lowerLightness = Math.min(100, lightness * 100)
+      const upperLightness = Math.min(100, (lightness + 0.2) * 100)
+      const hue = rand(0, 360)
+      const sat = `${rand(lowerSaturation, upperSaturation)}%`
+      const light = `${rand(lowerLightness, upperLightness)}%`
+      return `hsl(${hue},${sat},${light})`
+    }
+
+    // Generates a radial gradient stop point
+    const randomGradientPoint = () => {
+      const lowerTransparency = Math.min(100, softness * 100)
+      const upperTransparency = Math.min(100, (softness + 0.2) * 100)
+      const transparency = rand(lowerTransparency, upperTransparency)
+      return (
+        `radial-gradient(` +
+        `at ${rand(10, 90)}% ${rand(10, 90)}%,` +
+        `${randomHSL()} 0,` +
+        `transparent ${transparency}%)`
+      )
+    }
+
+    let css = `opacity:0.9;background-color:${randomHSL()};background-image:`
+    for (let i = 0; i < points - 1; i++) {
+      css += `${randomGradientPoint()},`
+    }
+    css += `${randomGradientPoint()};`
+    node.style = css
+  }
+
+  // Apply the initial gradient
+  createGradient(config)
+
+  return {
+    // Apply a new gradient
+    update: config => {
+      createGradient(config)
+    },
+  }
+}
diff --git a/packages/builder/vite.config.js b/packages/builder/vite.config.js
index b67aae0a2e..4125dec77e 100644
--- a/packages/builder/vite.config.js
+++ b/packages/builder/vite.config.js
@@ -52,6 +52,10 @@ export default ({ mode }) => {
           find: "analytics",
           replacement: path.resolve("./src/analytics"),
         },
+        {
+          find: "actions",
+          replacement: path.resolve("./src/actions"),
+        },
       ],
     },
   }