function Invoke-TerraformMultiCloud {
    [CmdletBinding(SupportsShouldProcess=$true)]
    param(
        [Parameter(Mandatory=$true)]
        [ValidateSet('Azure','AWS','GCP')]
        [string[]]$CloudProviders,
        
        [string]$TfWorkingDir = '$PSScriptRoot/terraform'
    )

    $stateReport = [PSCustomObject]@{
        Timestamp = Get-Date -Format 'yyyy-MM-dd HH:mm:ss'
        DeploymentStatus = @{}
        ResourceCounts = @{}
        CrossCloudDependencies = @()
    }

    try {
        # 初始化多供应商terraform工作区
        $CloudProviders | ForEach-Object {
            if ($PSCmdlet.ShouldProcess("Initialize $_ provider")) {
                terraform -chdir=$TfWorkingDir init -backend-config="$_backend.hcl"
            }
        }

        # 执行跨云资源编排
        $planOutput = terraform -chdir=$TfWorkingDir plan -out=multicloud.tfplan
        $stateReport.DeploymentStatus['Plan'] = $planOutput -match 'No changes' ? 'Stable' : 'Pending'

        # 自动化应用配置
        if ($planOutput -match 'to add') {
            $applyOutput = terraform -chdir=$TfWorkingDir apply -auto-approve multicloud.tfplan
            $stateReport.DeploymentStatus['Apply'] = $applyOutput -match 'Apply complete' ? 'Success' : 'Failed'
        }

        # 获取跨云资源状态
        $tfState = terraform -chdir=$TfWorkingDir show -json | ConvertFrom-Json
        $stateReport.ResourceCounts = $tfState.resources | 
            Group-Object provider_name | 
            ForEach-Object {@{$_.Name = $_.Count}} 

        # 分析云间依赖关系
        $stateReport.CrossCloudDependencies = $tfState.resources | 
            Where-Object { $_.depends_on -match 'aws_|azurerm_' } | 
            Select-Object type, provider
    }
    catch {
        Write-Error "多云部署失败: $_"
        terraform -chdir=$TfWorkingDir destroy -auto-approve
    }

    # 生成基础设施即代码报告
    $stateReport | Export-Csv -Path "$env:TEMP/MultiCloudReport_$(Get-Date -Format yyyyMMdd).csv"
    return $stateReport
}

function Invoke-HybridIaC {
    [CmdletBinding(SupportsShouldProcess=$true)]
    param(
        [Parameter(Mandatory=$true)]
        [ValidateSet('Azure','AWS','OnPrem')]
        [string[]]$Environments,
        
        [string]$DscConfigPath = '$PSScriptRoot/dsc'
    )

    $deploymentReport = [PSCustomObject]@{
        Timestamp = Get-Date -Format 'yyyy-MM-dd HH:mm:ss'
        AppliedConfigs = @()
        ComplianceStatus = @{}
        CrossPlatformIssues = @()
    }

    try {
        # 应用Terraform基础设施
        $Environments | ForEach-Object {
            if ($PSCmdlet.ShouldProcess("Deploy $_ resources")) {
                terraform -chdir="$DscConfigPath/terraform/$_" apply -auto-approve
            }
        }

        # 执行DSC配置
        $Environments | ForEach-Object {
            $dscConfig = Get-ChildItem "$DscConfigPath/$_" -Filter *.ps1
            $dscConfig | ForEach-Object {
                $job = Start-Job -ScriptBlock {
                    param($config)
                    & $config.FullName
                } -ArgumentList $_
                $deploymentReport.AppliedConfigs += $job | Wait-Job | Receive-Job
            }
        }

        # 验证混合云合规性
        $deploymentReport.ComplianceStatus = $Environments | ForEach-Object {
            $status = Test-DscConfiguration -CimSession (New-CimSession -ComputerName $_)
            @{$_ = $status.InDesiredState ? 'Compliant' : 'Non-Compliant'}
        }
    }
    catch {
        Write-Error "混合云部署失败: $_"
        terraform -chdir="$DscConfigPath/terraform" destroy -auto-approve
    }

    # 生成统一部署报告
    $deploymentReport | Export-Clixml -Path "$env:TEMP/HybridIaC_Report_$(Get-Date -Format yyyyMMdd).xml"
    return $deploymentReport
}

function Invoke-TerraformDeployment {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory=$true)]
        [string]$Environment
    )

    # 生成Terraform变量文件
    $tfVars = @{
        environment = $Environment
        location    = 'eastus'
        vm_count    = 3
    } | ConvertTo-Json
    $tfVars | Out-File -FilePath "./terraform.tfvars.json"

    # 初始化并应用配置
    terraform init -input=false
    terraform apply -auto-approve -var-file="./terraform.tfvars.json"

    # 获取输出变量
    $output = terraform output -json | ConvertFrom-Json
    [PSCustomObject]@{
        PublicIP = $output.public_ip.value
        StorageEndpoint = $output.storage_endpoint.value
    }
}

# 执行多环境部署
'dev','staging','prod' | ForEach-Object {
    Invoke-TerraformDeployment -Environment $_ -Verbose
}