From ea77224c75f71329a4a3b58e414e39e7ea60b3ea Mon Sep 17 00:00:00 2001
From: SethBurkart123 <seth.burkart@hills.adventist.edu.au>
Date: Tue, 1 Apr 2025 15:27:46 +1100
Subject: [PATCH] feat: add calculator

---
 package.json                                  |   1 +
 src/interface/components/PickerSwatch.svelte  |   1 +
 src/interface/pages/settings/shortcuts.svelte |  10 +-
 .../built-in/globalSearch/Calculator.svelte   | 152 ++++++++++++++++++
 .../built-in/globalSearch/SearchBar.svelte    |  36 ++++-
 src/plugins/built-in/globalSearch/index.ts    |  11 +-
 6 files changed, 197 insertions(+), 14 deletions(-)
 create mode 100644 src/plugins/built-in/globalSearch/Calculator.svelte

diff --git a/package.json b/package.json
index 1ccada5d..8ac05db3 100644
--- a/package.json
+++ b/package.json
@@ -85,6 +85,7 @@
     "idb": "^8.0.2",
     "localforage": "^1.10.0",
     "lodash": "^4.17.21",
+    "mathjs": "^14.4.0",
     "million": "^3.1.11",
     "motion": "^12.4.12",
     "postcss": "^8.5.3",
diff --git a/src/interface/components/PickerSwatch.svelte b/src/interface/components/PickerSwatch.svelte
index 643f5f46..631d954d 100644
--- a/src/interface/components/PickerSwatch.svelte
+++ b/src/interface/components/PickerSwatch.svelte
@@ -5,6 +5,7 @@
 </script>
 
 <button
+  aria-label="Color Picker Swatch"
   onclick={onClick}
   style="background: {$settingsState.selectedColor}"
   class="w-16 h-8 rounded-md"
diff --git a/src/interface/pages/settings/shortcuts.svelte b/src/interface/pages/settings/shortcuts.svelte
index 056f3d68..1d155857 100644
--- a/src/interface/pages/settings/shortcuts.svelte
+++ b/src/interface/pages/settings/shortcuts.svelte
@@ -66,7 +66,7 @@
 </script>
 
 {#snippet Shortcuts([index, Shortcut]: [string, { name: string, enabled: boolean }]) }
-<div class="flex items-center justify-between px-4 py-3">
+<div class="flex justify-between items-center px-4 py-3">
   <div class="pr-4">
     <h2 class="text-sm">{Shortcut.name}</h2>
   </div>
@@ -95,7 +95,7 @@
               class="w-full"
             >
               <input
-                class="w-full p-2 transition border-0 rounded-lg placeholder-zinc-300 bg-zinc-100 dark:bg-zinc-700 focus:bg-zinc-200/50 dark:focus:bg-zinc-600"
+                class="p-2 w-full rounded-lg border-0 transition placeholder-zinc-300 bg-zinc-100 dark:bg-zinc-700 focus:bg-zinc-200/50 dark:focus:bg-zinc-600"
                 type="text"
                 placeholder="Shortcut Name"
                 bind:value={newTitle}
@@ -108,7 +108,7 @@
               class="w-full"
             >
               <input
-                class="w-full p-2 my-2 transition border-0 rounded-lg placeholder-zinc-300 bg-zinc-100 dark:bg-zinc-700 focus:bg-zinc-200/50 dark:focus:bg-zinc-600"
+                class="p-2 my-2 w-full rounded-lg border-0 transition placeholder-zinc-300 bg-zinc-100 dark:bg-zinc-700 focus:bg-zinc-200/50 dark:focus:bg-zinc-600"
                 type="text"
                 placeholder="URL eg. https://google.com"
                 bind:value={newURL}
@@ -142,9 +142,9 @@
 
     <!-- Custom Shortcuts Section -->
     {#each $settingsState.customshortcuts as shortcut, index}
-      <div class="flex items-center justify-between px-4 py-3">
+      <div class="flex justify-between items-center px-4 py-3">
         {shortcut.name}
-        <button onclick={() => deleteCustomShortcut(index)}>
+        <button aria-label="Delete Shortcut" onclick={() => deleteCustomShortcut(index)}>
           <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width={1.5} stroke="currentColor" class="w-6 h-6">
             <path stroke-linecap="round" stroke-linejoin="round" d="M6 18L18 6M6 6l12 12" />
           </svg>
diff --git a/src/plugins/built-in/globalSearch/Calculator.svelte b/src/plugins/built-in/globalSearch/Calculator.svelte
new file mode 100644
index 00000000..8197ab49
--- /dev/null
+++ b/src/plugins/built-in/globalSearch/Calculator.svelte
@@ -0,0 +1,152 @@
+<script lang="ts">
+  import { createEventDispatcher, onDestroy } from 'svelte';
+  import debounce from '@/seqta/utils/debounce';
+  import * as math from 'mathjs';
+
+  let { searchTerm = '', isSelected = false } = $props<{ searchTerm: string, isSelected: boolean }>();
+  
+  const dispatch = createEventDispatcher<{
+    hasResult: string | null;
+  }>();
+  
+  let result = $state<string | null>(null);
+  let isCalculating = $state(false);
+  let inputUnit = $state<string>('');
+  let outputUnit = $state<string>('');
+
+  // Map of unit abbreviations to full names
+  const unitFullNames: Record<string, string> = {
+    km: 'Kilometers',
+    m: 'Meters',
+    cm: 'Centimeters',
+    mm: 'Millimeters',
+    mi: 'Miles',
+    ft: 'Feet',
+    in: 'Inches',
+    kg: 'Kilograms',
+    g: 'Grams',
+    lb: 'Pounds',
+    oz: 'Ounces',
+    l: 'Liters',
+    ml: 'Milliliters',
+    gal: 'Gallons',
+    h: 'Hours',
+    min: 'Minutes',
+    s: 'Seconds',
+    ms: 'Milliseconds'
+  };
+
+  function detectUnit(expression: string): string {
+    try {
+      const unit = math.unit(expression);
+      if (unit) {
+        // Get the base unit name
+        const unitStr = unit.formatUnits();
+        return unitFullNames[unitStr] || unitStr;
+      }
+    } catch (e) {
+      // Not a unit or invalid expression
+    }
+    return '';
+  }
+  
+  // Process the input with debounce to avoid unnecessary calculations
+  const processInput = debounce((input: string) => {
+    try {
+      if (!input.trim()) {
+        result = null;
+        inputUnit = '';
+        outputUnit = '';
+        dispatch('hasResult', null);
+        return;
+      }
+      
+      isCalculating = true;
+      
+      // Let mathjs handle everything
+      const evaluated = math.evaluate(input);
+      
+      // Format the result
+      if (evaluated !== undefined) {
+        if (math.typeOf(evaluated) === 'Unit') {
+          // Handle unit conversion results
+          result = math.format(evaluated, { precision: 14 });
+          inputUnit = detectUnit(input);
+          outputUnit = detectUnit(result);
+        } else if (typeof evaluated === 'number') {
+          // Handle regular numbers
+          if (math.round(evaluated) === evaluated) {
+            result = math.format(evaluated, { precision: 14 });
+          } else {
+            result = math.format(evaluated, { precision: 14 });
+          }
+          inputUnit = '';
+          outputUnit = '';
+        } else {
+          result = math.format(evaluated, { precision: 14 });
+          inputUnit = '';
+          outputUnit = '';
+        }
+        dispatch('hasResult', result);
+      } else {
+        result = null;
+        inputUnit = '';
+        outputUnit = '';
+        dispatch('hasResult', null);
+      }
+    } catch (e) {
+      // If mathjs throws an error, this isn't a valid expression
+      result = null;
+      inputUnit = '';
+      outputUnit = '';
+      dispatch('hasResult', null);
+    } finally {
+      isCalculating = false;
+    }
+  }, 3);
+  
+  $effect(() => {
+    processInput(searchTerm);
+  });
+  
+  onDestroy(() => {
+    dispatch('hasResult', null);
+  });
+</script>
+
+{#if result !== null}
+<div class="p-2">
+  <p class="text-[0.85rem] p-1 pb-0.5 font-semibold text-zinc-500 dark:text-zinc-400">Calculator</p>
+  <div class="flex items-center justify-between gap-8 rounded-lg border border-transparent {isSelected ? 'bg-zinc-900/5 dark:bg-white/10 border-zinc-900/5 dark:border-zinc-100/5' : ''}">
+    <div class="flex flex-col flex-1 items-center py-4 pl-4">
+      <div class="text-3xl font-semibold text-zinc-900 dark:text-white">
+        {searchTerm}
+      </div>
+      <div class="px-3 py-1 mt-1 text-sm rounded-md text-zinc-600 dark:text-zinc-400 bg-zinc-100 dark:bg-zinc-800">
+        {inputUnit || 'Question'}
+      </div>
+    </div>
+
+    <div class="flex flex-col justify-center items-center w-12">
+      <div class="h-8 w-[1px] bg-zinc-900/5 dark:bg-zinc-100/5"></div>
+      <div class="text-2xl text-zinc-600 dark:text-zinc-400">
+        →
+      </div>
+      <div class="h-8 w-[1px] bg-zinc-900/5 dark:bg-zinc-100/5"></div>
+    </div>
+
+    {#if !isCalculating}
+      <div class="flex flex-col flex-1 items-center py-4 pr-4">
+        <div class="text-3xl font-semibold text-zinc-900 dark:text-white">
+          {result}
+        </div>
+        <div class="px-3 py-1 mt-1 text-sm rounded-md text-zinc-600 dark:text-zinc-400 bg-zinc-100 dark:bg-zinc-800">
+          {outputUnit || 'Result'}
+        </div>
+      </div>
+    {:else}
+      <div class="w-6 h-6 rounded-full border-2 animate-spin border-zinc-300 dark:border-zinc-700 border-t-zinc-600 dark:border-t-zinc-300"></div>
+    {/if}
+  </div>
+</div>
+{/if}
\ No newline at end of file
diff --git a/src/plugins/built-in/globalSearch/SearchBar.svelte b/src/plugins/built-in/globalSearch/SearchBar.svelte
index ff3982ad..e0932f2e 100644
--- a/src/plugins/built-in/globalSearch/SearchBar.svelte
+++ b/src/plugins/built-in/globalSearch/SearchBar.svelte
@@ -9,6 +9,7 @@
   import { createSearchIndexes, performSearch as doSearch } from './searchUtils';
   import { highlightMatch, highlightSnippet } from './highlightUtils';
   import Fuse from 'fuse.js';
+  import Calculator from './Calculator.svelte';
 
   const { transparencyEffects } = $props<{ transparencyEffects: boolean }>();
 
@@ -40,6 +41,12 @@
   let combinedResults = $state<CombinedResult[]>([]); 
   let isLoading = $state(false);
   let prevSearchTerm = $state('');
+  let calculatorResult = $state<string | null>(null);
+
+  // Function to check if calculator has a result
+  const updateCalculatorState = (hasResult: string | null) => {
+    calculatorResult = hasResult;
+  };
 
   onMount(() => {
     setupSearchIndexes();
@@ -107,15 +114,29 @@
   });
 
   const selectNext = () => {
-    if (selectedIndex < combinedResults.length - 1) selectedIndex++;
+    if (calculatorResult && selectedIndex === -1) {
+      selectedIndex = 0; // Move from calculator to first search result
+    } else if (selectedIndex < combinedResults.length - 1) {
+      selectedIndex++;
+    }
   };
 
   const selectPrev = () => {
-    if (selectedIndex > 0) selectedIndex--;
+    if (selectedIndex > 0) {
+      selectedIndex--;
+    } else if (selectedIndex === 0 && calculatorResult) {
+      selectedIndex = -1; // Move from first search result to calculator
+    }
   };
 
   const executeSelected = () => {
-    combinedResults[selectedIndex]?.item.action();
+    if (selectedIndex === -1 && calculatorResult) {
+      if (calculatorResult) {
+        navigator.clipboard.writeText(calculatorResult);
+      }
+    } else {
+      combinedResults[selectedIndex]?.item.action();
+    }
     commandPalleteOpen = false;
   };
 
@@ -173,7 +194,12 @@
           />
         </div>
 
-        <!-- Unified results list -->
+        <Calculator 
+          searchTerm={searchTerm} 
+          isSelected={selectedIndex === -1} 
+          on:hasResult={(e) => updateCalculatorState(e.detail)}
+        />
+
         {#if combinedResults.length > 0}
           <ul class="overflow-y-auto max-h-[32rem] text-base scroll-py-2 p-1 gap-0.5 flex flex-col">
             {#each combinedResults as result, i (result.id)} 
@@ -225,7 +251,7 @@
               </li>
             {/each}
           </ul>
-        {:else}
+        {:else if !calculatorResult}
           <div class="px-8 py-16 text-center text-zinc-900 dark:text-zinc-200 sm:px-16">
             {#if isLoading}
               <div class="mx-auto w-8 h-8 rounded-full border-2 animate-spin border-zinc-300 dark:border-zinc-700 border-t-zinc-600 dark:border-t-zinc-300"></div>
diff --git a/src/plugins/built-in/globalSearch/index.ts b/src/plugins/built-in/globalSearch/index.ts
index 182152f4..9db7d9c5 100644
--- a/src/plugins/built-in/globalSearch/index.ts
+++ b/src/plugins/built-in/globalSearch/index.ts
@@ -107,7 +107,6 @@ const globalSearchPlugin: Plugin<typeof settings> = {
       if (titleElement.querySelector('.search-trigger')) {
         return;
       }
-
       // Create search button
       const searchButton = document.createElement('div');
       searchButton.className = 'search-trigger';
@@ -138,9 +137,13 @@ const globalSearchPlugin: Plugin<typeof settings> = {
       });
       
       // Mount Svelte component in shadow DOM
-      app = renderSvelte(SearchBar, searchRootShadow, {
-        transparencyEffects: api.settings.transparencyEffects,
-      });
+      try {
+        app = renderSvelte(SearchBar, searchRootShadow, {
+          transparencyEffects: api.settings.transparencyEffects ? true : false,
+        });
+      } catch (error) {
+        console.error('Error rendering Svelte component:', error);
+      }
     }
 
     const title = document.querySelector('#title');