new state example

Pwsh/Modules/ScriptWide-State.ps1

@@ -0,0 +1,54 @@
+[hashtable]$script:CachedValue = @{}
+[hashtable]$script:AppConfig = @{
+    Log = Join-Path 'temp:' 'foo.log'
+    # ... other app-wite properties
+}
+function CachedGetCommand {
+    [CmdletBinding()]
+    param( [string]$CommandName, [switch]$Force )
+    $state =  $script:CachedValue
+    $start = [Datetime]::Now
+
+    if($Force -or ( -not $state.ContainsKey( $CommandName ) )) {
+        'fetching....' | write-verbose -verbose
+        $query = Get-Command -CommandType Application -Name $CommandName -TotalCount 1
+        if( -not $query) {  return }
+        $state[ $CommandName ] = $query
+    }
+
+    $delta = [Datetime]::Now - $Start
+    'Lookup {0} took {1}' -f @(
+        $CommandName
+        [Datetime]::Now - $Start | Join-string -f '{0:n2} ms' TotalMilliseconds
+    ) | Write-Verbose
+
+    $state[ $CommandName ]
+}
+function LogIt {
+    param(
+        $InputObject,
+
+        [ArgumentCompletions('Error', 'Warning', 'Info')]
+        [string]$Severity,
+
+        [switch]$PassThru
+    )
+    process {
+        $Now = Get-Date
+        $InputObject
+            | ConvertTo-JSon -depth 4 -compress
+            | Join-String -f "${now}: ${Severity}: "
+            | Add-Content -Path $Script:AppConfig.Log -PassThru:$PassThru
+    }
+}
+
+
+    CachedGetCommand 'pwsh' -Verbose -Force
+    CachedGetCommand 'pwsh' -Verbose
+    CachedGetCommand 'pwsh' -Verbose
+
+###
+LogIt -in 'App Init...' -Severity Info
+
+#
+gc (gi $script:AppConfig.Log)