PSCloudinairy

0.2

PSCloudinairy.psm1

function Get-CloudinairyApiAuthInfo {
    [CmdletBinding()]
    param
    (
        [Parameter()]
        [ValidateNotNullOrEmpty()]
        [string]$ApiKey,

        [Parameter()]
        [ValidateNotNullOrEmpty()]
        [string]$ApiSecret,

        [Parameter()]
        [ValidateNotNullOrEmpty()]
        [string]$CloudName,

        [Parameter()]
        [ValidateNotNullOrEmpty()]
        [string]$RegistryKeyPath = 'HKCU:\Software\PSCloudinairy'
    )
    
    $ErrorActionPreference = 'Stop'

    function decrypt([string]$TextToDecrypt) {
        $secure = ConvertTo-SecureString $TextToDecrypt
        $hook = New-Object system.Management.Automation.PSCredential("test", $secure)
        $plain = $hook.GetNetworkCredential().Password
        return $plain
    }

    try {
        $CloudinairyApiInfo = @{}
        
        'ApiKey', 'ApiSecret', 'CloudName' | ForEach-Object {
            if ($PSBoundParameters.ContainsKey($_)) {
                $CloudinairyApiInfo.$_ = (Get-Variable -Name $_).Value
            }
        }

        if ($CloudinairyApiInfo.Keys.Count -ne 3) {
            if (Get-Variable -Name CloudinairyApiInfo -Scope Script -ErrorAction 'Ignore') {
                $script:CloudinairyApiInfo
            } elseif (-not (Test-Path -Path $RegistryKeyPath)) {
                throw "No Cloudinairy API info found in registry!"
            } elseif (-not ($keyValues = Get-ItemProperty -Path $RegistryKeyPath)) {
                throw 'Cloudinairy API info not found in registry!'
            } else {
                'ApiKey', 'ApiSecret', 'CloudName' | ForEach-Object {
                    $decryptedVal = decrypt $keyValues.$_
                    $CloudinairyApiInfo.$_ = $decryptedVal
                }
                $script:CloudinairyApiInfo = [pscustomobject]$CloudinairyApiInfo
                $script:CloudinairyApiInfo
            }
            
        } else {
            $script:CloudinairyApiInfo = [pscustomobject]$CloudinairyApiInfo
            $script:CloudinairyApiInfo
        }
    } catch {
        $PSCmdlet.ThrowTerminatingError($_)
    }
}

function Save-CloudinairyApiAuthInfo {
    [CmdletBinding()]
    param (
        [Parameter()]
        [ValidateNotNullOrEmpty()]
        [string]$CloudName,

        [Parameter()]
        [string]$ApiKey,

        [Parameter()]
        [string]$ApiSecret,
    
        [Parameter()]
        [string]$RegistryKeyPath = "HKCU:\Software\PSCloudinairy"
    )

    begin {
        function encrypt([string]$TextToEncrypt) {
            $secure = ConvertTo-SecureString $TextToEncrypt -AsPlainText -Force
            $encrypted = $secure | ConvertFrom-SecureString
            return $encrypted
        }
    }
    
    process {
        if (-not (Test-Path -Path $RegistryKeyPath)) {
            New-Item -Path ($RegistryKeyPath | Split-Path -Parent) -Name ($RegistryKeyPath | Split-Path -Leaf) | Out-Null
        }
        
        $values = $PSBoundParameters.GetEnumerator().where({ $_.Key -ne 'RegistryKeyPath' -and $_.Value}) | Select-Object -ExpandProperty Key
        
        foreach ($val in $values) {
            Write-Verbose "Creating $RegistryKeyPath\$val"
            New-ItemProperty $RegistryKeyPath -Name $val -Value $(encrypt $((Get-Variable $val).Value)) -Force | Out-Null
        }
    }
}

function Invoke-CloudinairyApiCall {
    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory)]
        [ValidateNotNullOrEmpty()]
        [string]$HttpMethod,

        [Parameter(Mandatory)]
        [ValidateNotNullOrEmpty()]
        [string]$UrlParameters,

        [Parameter()]
        [ValidateNotNullOrEmpty()]
        [hashtable]$QueryParameters,

        [Parameter()]
        [ValidateNotNullOrEmpty()]
        [hashtable]$Payload,

        [Parameter()]
        [ValidateNotNullOrEmpty()]
        [string]$ApiVersion = 'v1_1'
    )

    $ErrorActionPreference = 'Stop'

    function Get-StringHash([String] $String, $HashName = "MD5") {
        $StringBuilder = New-Object System.Text.StringBuilder
        [System.Security.Cryptography.HashAlgorithm]::Create($HashName).ComputeHash([System.Text.Encoding]::UTF8.GetBytes($String))|%{
            [Void]$StringBuilder.Append($_.ToString("x2"))
        }
        $StringBuilder.ToString()
    }

    $apiInfo = Get-CloudinairyApiAuthInfo

    $invRestParams = @{
        Method = $HttpMethod
        Uri    = "https://api.cloudinary.com/$ApiVersion/$($apiInfo.CloudName)/$UrlParameters"
    }

    $queryParams = @{
        'max_results' = 500
    }
    if ($PSBoundParameters.ContainsKey('QueryParameters')) {
        $invRestParams.Body = $queryParams + $QueryParameters
    }

    if ($HttpMethod -eq 'POST') {
        throw 'POST method currently not supported.'
        # $unixTime = [int][double]::Parse((Get-Date -UFormat %s))
        # $signatureBase = ''

        # $paramsToSign = @{ timestamp = $unixTime }
        # if ($PSBoundParameters.ContainsKey('Parameters')) {
        # $paramsToSign += $Parameters
        # }
    
        # $paramsToSign.GetEnumerator() | sort Name | foreach {
        # $signatureBase += [System.Uri]::EscapeDataString("$($_.Key)=$($_.Value)&")
        # }
        # $signatureBase = $signatureBase.TrimEnd('%26')
        # $signature = Get-StringHash -String $signatureBase -HashName 'SHA1'

        # $invRestParams.Body = @{
        # api_key = $apiInfo.ApiKey
        # timestamp = '{0}{1}' -f $unixTime, $apiInfo.ApiSecret
        # signature = $signature
        # }
        if ($PSBoundParameters.ContainsKey('Payload')) {
            $invRestParams.Body = $Payload
        }
    } else {
        $secret = ConvertTo-SecureString $apiInfo.ApiSecret -AsPlainText -Force
        $invRestParams.Credential = New-Object System.Management.Automation.PSCredential ($apiInfo.ApiKey, $secret)
    }
    Invoke-RestMethod @invRestParams
}

function Get-CloudinairyResource {
    [CmdletBinding()]
    param
    (
        [Parameter()]
        [ValidateNotNullOrEmpty()]
        [ValidateSet('image', 'raw', 'video')]
        [string]$ResourceType,

        [Parameter()]
        [ValidateNotNullOrEmpty()]
        [string]$PublicId
    )

    $ErrorActionPreference = 'Stop'

    $invParams = @{
        HttpMethod    = 'GET'
        UrlParameters = "resources/search"
    }

    $expressionParts = @()
    if ($PSBoundParameters.ContainsKey('ResourceType')) {
        $expressionParts += @("resource_type:$ResourceType")    
    }
    
    if ($PSBoundParameters.ContainsKey('PublicId')) {
        $expressionParts += @("public_id:$PublicId")
    }

    if (@($expressionParts).Count -gt 0) {
        $queryParams = @{
            'expression' = $expressionParts -join ' AND '
        }
        $invParams.QueryParameters = $queryParams
    }
    
    (Invoke-CloudinairyApiCall @invParams).resources
}