AddIndex.ps1

$AzureCognitiveSearchURL = "https://sharepointsearchinstance.search.windows.net"
$AzureCognitiveSearchAdminKey = "Wt1mZ0sjkKoXW913d2eJ8xXYJk4JHThk1UK8H0wZoIAzSeDjYTmC"

$Header = @{"api-key"  = "$AzureCognitiveSearchAdminKey"
"content-type" = "application/json"

}

$Body = @"
{
    "name" : "sharepoint-index",
    "fields": [
        { "name": "id", "type": "Edm.String", "key": true, "searchable": false },
        { "name": "metadata_spo_item_name", "type": "Edm.String", "key": false, "searchable": true, "filterable": false, "sortable": false, "facetable": false },
        { "name": "metadata_spo_item_path", "type": "Edm.String", "key": false, "searchable": false, "filterable": false, "sortable": false, "facetable": false },
        { "name": "metadata_spo_item_content_type", "type": "Edm.String", "key": false, "searchable": false, "filterable": true, "sortable": false, "facetable": true },
        { "name": "metadata_spo_item_last_modified", "type": "Edm.DateTimeOffset", "key": false, "searchable": false, "filterable": false, "sortable": true, "facetable": false },
        { "name": "metadata_spo_item_size", "type": "Edm.Int64", "key": false, "searchable": false, "filterable": false, "sortable": false, "facetable": false },
        { "name": "content", "type": "Edm.String", "searchable": true, "filterable": false, "sortable": false, "facetable": false }
    ]
}

"@

$uri = "$AzureCognitiveSearchURL/indexes?api-version=2020-06-30"
invoke-restmethod -Method POST -Uri $uri -Body $body  -Headers $Header