functions/Copy-DbaSqlServerAgent.ps1

function Copy-DbaSqlServerAgent {
    <#
        .SYNOPSIS
            Copy SQL Server Agent from one server to another.
 
        .DESCRIPTION
            A wrapper function that calls the associated Copy command for the objects under SQL Server Agent in SSMS.
            As well as the SQL Agent properties (job history max rows, DBMail profile name, etc.).
 
            Copies *all of it*.
 
            You must have sysadmin access and server version must be SQL Server version 2000 or greater.
 
        .PARAMETER Source
            Source SQL Server.
 
        .PARAMETER SourceSqlCredential
            Allows you to login to servers using SQL Logins as opposed to Windows Auth/Integrated/Trusted. To use:
 
            $scred = Get-Credential, then pass $scred object to the -SourceSqlCredential parameter.
 
            Windows Authentication will be used if DestinationSqlCredential is not specified. SQL Server does not accept Windows credentials being passed as credentials.
            To connect as a different Windows user, run PowerShell as that user.
 
        .PARAMETER Destination
            Destination Sql Server.
 
        .PARAMETER DestinationSqlCredential
            Allows you to login to servers using SQL Logins as opposed to Windows Auth/Integrated/Trusted. To use:
 
            $dcred = Get-Credential, then pass this $dcred to the -DestinationSqlCredential parameter.
 
            Windows Authentication will be used if DestinationSqlCredential is not specified. SQL Server does not accept Windows credentials being passed as credentials.
            To connect as a different Windows user, run PowerShell as that user.
 
        .PARAMETER DisableJobsOnDestination
            When this flag is set, copy all jobs as Enabled=0
 
        .PARAMETER DisableJobsOnSource
            Disables the jobs on source
 
        .PARAMETER WhatIf
            Shows what would happen if the command were to run. No actions are actually performed.
 
        .PARAMETER Confirm
            Prompts you for confirmation before executing any changing operations within the command.
 
        .PARAMETER Force
            Drops and recreates the objects if it exists
 
        .PARAMETER Silent
            Use this switch to disable any kind of verbose messages
 
        .NOTES
            Tags: Migration, SqlServerAgent, SqlAgent
            Author: Chrissy LeMaire (@cl), netnerds.net
            Requires: sysadmin access on SQL Servers
 
            Website: https://dbatools.io
            Copyright: (C) Chrissy LeMaire, clemaire@gmail.com
            License: GNU GPL v3 https://opensource.org/licenses/GPL-3.0
 
        .LINK
            https://dbatools.io/Copy-DbaSqlServerAgent
 
        .EXAMPLE
            Copy-DbaSqlServerAgent -Source sqlserver2014a -Destination sqlcluster
 
            Copies all job server objects from sqlserver2014a to sqlcluster, using Windows credentials. If job objects with the same name exist on sqlcluster, they will be skipped.
 
        .EXAMPLE
            Copy-DbaSqlServerrAgent -Source sqlserver2014a -Destination sqlcluster -SourceSqlCredential $cred
 
            Copies all job objects from sqlserver2014a to sqlcluster, using SQL credentials for sqlserver2014a and Windows credentials for sqlcluster.
 
        .EXAMPLE
            Copy-DbaSqlServerAgent -Source sqlserver2014a -Destination sqlcluster -WhatIf
 
            Shows what would happen if the command were executed.
    #>

    [cmdletbinding(SupportsShouldProcess = $true)]
    param (
        [parameter(Mandatory = $true)]
        [DbaInstanceParameter]$Source,
        [PSCredential]
        $SourceSqlCredential,
        [parameter(Mandatory = $true)]
        [DbaInstanceParameter]$Destination,
        [PSCredential]
        $DestinationSqlCredential,
        [Switch]$DisableJobsOnDestination,
        [Switch]$DisableJobsOnSource,
        [switch]$Force,
        [switch]$Silent
    )

    begin {
        $sourceServer = Connect-SqlInstance -SqlInstance $Source -SqlCredential $SourceSqlCredential
        $destServer = Connect-SqlInstance -SqlInstance $Destination -SqlCredential $DestinationSqlCredential

        Invoke-SmoCheck -SqlInstance $sourceServer
        Invoke-SmoCheck -SqlInstance $destServer

        $source = $sourceServer.DomainInstanceName
        $destination = $destServer.DomainInstanceName

        $sourceAgent = $sourceServer.JobServer
    }
    process {

        # All of these support whatif inside of them
        Copy-DbaAgentCategory -Source $sourceServer -Destination $destServer -Force:$force
        Copy-DbaAgentOperator -Source $sourceServer -Destination $destServer -Force:$force
        Copy-DbaAgentAlert -Source $sourceServer -Destination $destServer -Force:$force -IncludeDefaults
        Copy-DbaAgentProxyAccount -Source $sourceServer -Destination $destServer -Force:$force
        Copy-DbaAgentSharedSchedule -Source $sourceServer -Destination $destServer -Force:$force
        Copy-DbaAgentJob -Source $sourceServer -Destination $destServer -Force:$force -DisableOnDestination:$DisableJobsOnDestination -DisableOnSource:$DisableJobsOnSource

        # To do
        <#
            Copy-DbaAgentMasterServer -Source $sourceServer -Destination $destServer -Force:$force
            Copy-DbaAgentTargetServer -Source $sourceServer -Destination $destServer -Force:$force
            Copy-DbaAgentTargetServerGroup -Source $sourceServer -Destination $destServer -Force:$force
        #>


        <# Here are the properties, which must be migrated seperately #>
        $copyAgentPropStatus = [pscustomobject]@{
            SourceServer      = $sourceServer.Name
            DestinationServer = $destServer.Name
            Type              = "Agent Properites"
            Status            = $null
            Notes             = $null
            DateTime          = [DbaDateTime](Get-Date)
        }

        if ($Pscmdlet.ShouldProcess($destination, "Copying Agent Properties")) {
            try {
                Write-Message -Level Verbose -Message "Copying SQL Agent Properties"
                $sql = $sourceAgent.Script() | Out-String
                $sql = $sql -replace [Regex]::Escape("'$source'"), "'$destination'"
                $sql = $sql -replace [Regex]::Escape("@errorlog_file="), [Regex]::Escape("--@errorlog_file=")
                Write-Message -Level Debug -Message $sql
                $null = $destServer.Query($sql)

                $copyAgentPropStatus.Status = "Successful"
                $copyAgentPropStatus
            }
            catch {
                $copyAgentPropStatus.Status = "Failed"
                $copyAgentPropStatus.Notes = $_.Exception.Message
                $copyAgentPropStatus

                Stop-Function -Message "Issue copying agent properties" -Target $destination -ErrorRecord $_
            }
        }
    }
    end {
        Test-DbaDeprecation -DeprecatedOn "1.0.0" -Silent:$false -Alias Copy-SqlServerAgent
    }
}