From 118a7b5338bd4e632dd58ab6ecd73707e813ae69 Mon Sep 17 00:00:00 2001
From: Brandon <brandon@devblackops.io>
Date: Fri, 17 Nov 2023 00:08:18 -0800
Subject: [PATCH] Load theme files on first usage of Format-TerminalIcons

---
 Terminal-Icons/Private/Import-XmlThemes.ps1    | 13 +++++++++++++
 Terminal-Icons/Public/Format-TerminalIcons.ps1 |  8 ++++++++
 Terminal-Icons/Terminal-Icons.psm1             | 17 +++++++----------
 3 files changed, 28 insertions(+), 10 deletions(-)
 create mode 100644 Terminal-Icons/Private/Import-XmlThemes.ps1

diff --git a/Terminal-Icons/Private/Import-XmlThemes.ps1 b/Terminal-Icons/Private/Import-XmlThemes.ps1
new file mode 100644
index 0000000..cc5e6fb
--- /dev/null
+++ b/Terminal-Icons/Private/Import-XmlThemes.ps1
@@ -0,0 +1,13 @@
+function Import-XmlThemes {
+    [Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSUseSingularNouns', '')]
+    param()
+
+    $script:iconThemes     = Import-Clixml -Path $script:moduleRoot/Data/iconThemes.xml
+    $script:colorThemes    = Import-Clixml -Path $script:moduleRoot/Data/colorThemes.xml
+    $script:colorSequences = Import-Clixml -Path $script:moduleRoot/Data/colorSequences.xml
+    $script:glyphs         = Import-Clixml -Path $script:moduleRoot/Data/glyphs.xml
+    $script:current.Themes = @{
+        Color = $script:colorThemes
+        Icon  = $script:iconThemes
+    }
+}
diff --git a/Terminal-Icons/Public/Format-TerminalIcons.ps1 b/Terminal-Icons/Public/Format-TerminalIcons.ps1
index e6280ba..62e5117 100644
--- a/Terminal-Icons/Public/Format-TerminalIcons.ps1
+++ b/Terminal-Icons/Public/Format-TerminalIcons.ps1
@@ -34,6 +34,14 @@ function Format-TerminalIcons {
         [hashtable]$CurrentSettings = $script:current
     )
 
+    begin {
+        # Load the theme files on first invocation
+        if (-not $script:themeFilesLoaded) {
+            Import-XmlThemes
+            $script:themeFilesLoaded = $true
+        }
+    }
+
     process {
         $displayInfo = Resolve-Icon $FileInfo
         if ($displayInfo.Icon) {
diff --git a/Terminal-Icons/Terminal-Icons.psm1 b/Terminal-Icons/Terminal-Icons.psm1
index 37b7ff8..7a32ffe 100644
--- a/Terminal-Icons/Terminal-Icons.psm1
+++ b/Terminal-Icons/Terminal-Icons.psm1
@@ -49,18 +49,15 @@ $userThemePath = Get-ThemeStoragePath
 # Load or create default preferences
 $prefs = Import-Preferences
 
-# Load builtin theme data
-$iconThemes     = Import-Clixml -Path $moduleRoot/Data/iconThemes.xml
-$colorThemes    = Import-Clixml -Path $moduleRoot/Data/colorThemes.xml
-$colorSequences = Import-Clixml -Path $moduleRoot/Data/colorSequences.xml
-$glyphs         = Import-Clixml -Path $moduleRoot/Data/glyphs.xml
+# To speed up module load times, the theme files are not imported on module load
+# Instead, the they are loaded on the first invocation of `Format-TerminalIcons`
+$themeFilesLoaded = $false
+$iconThemes       = @{}
+$colorThemes      = @{}
+$colorSequences   = @{}
+$glyphs           = @{}
 
-# Set current settings
 $current = Get-CurrentSettings
-$current.Themes = @{
-    Color = $colorThemes
-    Icon  = $iconThemes
-}
 
 # As of 0.12.0, we no longer save the builtin theme files in the user theme folder
 ('devblackops_color.xml', 'devblackops_light_color.xml', 'devblackops_icon.xml').ForEach({