Public/Get-PiHoleDbQueryTypes.ps1

function Get-PiHoleDbQueryTypes {
    <#
    .SYNOPSIS
    Retrieves query types data from the Pi-hole long-term database.
 
    .DESCRIPTION
    This function authenticates to the Pi-hole API using Connect-PiHole, retrieves query types data from the long-term database, and then disconnects the session using Disconnect-PiHole.
 
    .PARAMETER BaseUrl
    The base URL of the Pi-hole instance (e.g., http://pi.hole).
 
    .PARAMETER Credential
    A PSCredential object containing the Pi-hole password.
 
    .PARAMETER From
    DateTime from when the data should be requested. Accepts DateTime objects or date strings like '5-7-2025 3:34PM'.
 
    .PARAMETER Until
    DateTime until when the data should be requested. Accepts DateTime objects or date strings like '5-7-2025 3:34PM'.
 
    .OUTPUTS
    A PSCustomObject containing the query types data and processing time.
 
    .EXAMPLE
    $cred = Get-Credential
    $from = Get-Date "2023-01-01 12:00:00"
    $until = Get-Date "2023-01-02 12:00:00"
    Get-PiHoleDbQueryTypes -BaseUrl 'http://pi.hole' -Credential $cred -From $from -Until $until
 
    .EXAMPLE
    # Using string dates directly
    $cred = Get-Credential
    Get-PiHoleDbQueryTypes -BaseUrl 'http://pi.hole' -Credential $cred -From '5-7-2025 3:34PM' -Until '5-7-2025 11:59PM'
 
    .EXAMPLE
    # Get query types data for the last 24 hours
    $cred = Get-Credential
    $until = Get-Date
    $from = $until.AddDays(-1)
    Get-PiHoleDbQueryTypes -BaseUrl 'http://pi.hole' -Credential $cred -From $from -Until $until
    #>


    param (
        [Parameter(Mandatory = $true)]
        [string]$BaseUrl,

        [Parameter(Mandatory = $true)]
        [System.Management.Automation.PSCredential]$Credential,

        [Parameter(Mandatory = $true)]
        [DateTime]$From,

        [Parameter(Mandatory = $true)]
        [DateTime]$Until
    )

    begin {
        # Validate BaseUrl uses http
        if (-not $BaseUrl.StartsWith('http://')) {
            throw "Error: BaseUrl must use the 'http' scheme."
        }

        # Validate DateTime parameters
        if ($From -gt $Until) {
            throw "Error: From DateTime cannot be greater than Until DateTime."
        }
    }

    process {
        $sessionData = $null
        try {
            Write-Verbose "Starting authentication to Pi-hole at $BaseUrl"
            # Authenticate and get session data
            $sessionData = Connect-PiHole -BaseUrl $BaseUrl -Credential $Credential
            Write-Verbose "Authentication successful. Session ID: $($sessionData.ID), SID: $($sessionData.SID)"

            # Convert DateTime to Unix timestamps for API call
            $fromUnix = [DateTimeOffset]::new($From).ToUnixTimeSeconds()
            $untilUnix = [DateTimeOffset]::new($Until).ToUnixTimeSeconds()
            Write-Verbose "Converted dates - From: $From ($fromUnix), Until: $Until ($untilUnix)"

            # Prepare API request to get query types data
            $url = "$BaseUrl/api/stats/database/query_types?from=$fromUnix&until=$untilUnix"
            Write-Verbose "Making API request to: $url"
            $headers = @{ 'X-FTL-SID' = $sessionData.SID }

            $response = Invoke-RestMethod -Uri $url -Method Get -Headers $headers -ErrorAction Stop
            Write-Verbose "API request successful. Retrieved query types data"

            # Return the response as-is
            Write-Verbose "Successfully retrieved query types data"
            return $response
        }
        catch {
            Write-Error "Error occurred: $($_.Exception.Message)"
            Write-Verbose "Full error details: $($_ | Out-String)"
            
            # Try to disconnect if we have session data
            if ($sessionData -and $sessionData.ID -and $sessionData.SID) {
                Write-Verbose "Attempting to disconnect session due to error..."
                try {
                    Disconnect-PiHole -BaseUrl $BaseUrl -Id $sessionData.ID -SID $sessionData.SID
                    Write-Verbose "Session disconnected successfully"
                }
                catch {
                    Write-Warning "Failed to disconnect session: $($_.Exception.Message)"
                }
            }
            throw
        }
        finally {
            # Clean disconnect in finally block
            if ($sessionData -and $sessionData.ID -and $sessionData.SID) {
                Write-Verbose "Attempting final session cleanup..."
                try {
                    Disconnect-PiHole -BaseUrl $BaseUrl -Id $sessionData.ID -SID $sessionData.SID
                    Write-Verbose "Final session cleanup completed successfully"
                }
                catch {
                    Write-Warning "Failed to clean up session in finally block: $($_.Exception.Message)"
                }
            }
        }
    }

    end {
        # Nothing to clean up in the end block
    }
}