first pass

Public/Get-ExcelFileSchema.ps1

@@ -0,0 +1,47 @@
+function Get-ExcelFileSchema {
+    <#
+        .SYNOPSIS
+            Gets the schema of an Excel file.
+
+        .DESCRIPTION
+            The Get-ExcelFileSchema function gets the schema of an Excel file by returning the property names of the first row of each worksheet in the file.
+
+        .PARAMETER Path
+            Specifies the path to the Excel file.
+
+        .PARAMETER Compress
+            Indicates whether to compress the json output.
+
+        .OUTPUTS
+            Json
+
+        .EXAMPLE
+            Get-ExcelFileSchema -Path .\example.xlsx
+    #>
+
+    [CmdletBinding()]
+    param(
+        [Parameter(ValueFromPipelineByPropertyName, Mandatory)]
+        [Alias('FullName')]    
+        $Path,
+        [Switch]$Compress
+    )
+
+    Begin {
+        $result = @()
+    }
+
+    Process {        
+        $excelFiles = Get-ExcelFileSummary $Path
+        
+        foreach ($excelFile in $excelFiles) {
+            $data = Import-Excel $Path -WorksheetName $excelFile.WorksheetName | Select-Object -First 1
+            $names = $data[0].PSObject.Properties.name
+            $result += $excelFile | Add-Member -MemberType NoteProperty -Name "PropertyNames" -Value $names -PassThru
+        }
+    }
+
+    End {
+        $result | ConvertTo-Json -Compress:$Compress
+    }
+}