Private/Convert-ParametersToRunner.ps1
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function Convert-ParametersToRunner { # Used to generate run.ps1 file which is executed in Azure Function param ( [string[]]$Command, [string]$PreCode, [switch]$Invoke, [switch]$Clipboard ) BEGIN { $Response = @() $Response += "# run.ps1 auto-generated by EasyAzureFunction module, https://github.com/iricigor/EasyAzureFunction, iricigor@gmail.com","'run.ps1 start'" $Prefix = 'Ez' } PROCESS { foreach ($C1 in $Command) { # TODO: Recheck logic for more than one command, check also END block Write-Verbose -Message "Processing command $C1" $Params = Get-Parameter $C1 # generate code to read parameters $Response += '', '# POST method: $req', '$requestContent = Get-Content $req -Raw' # try to properly parse json response $Response += 'try {',' $requestBody = $requestContent | ConvertFrom-Json',' $Failed = $false' $Response += ' "Params (JSON): $($requestBody.PSObject.Properties.Name -join `",`")"' # logging to AzF console $Response += " `$$Prefix`InvokeCommand = `$requestBody.$Prefix`InvokeCommand" # reads hidden parameter foreach ($P1 in ($Params.Name | Select -Unique)) {$Response += " `$$Prefix$P1 = `$requestBody.$Prefix$P1"} # if fails, try to parse URL encoded params $Response += '} catch {$Failed = $true}' $Response += 'if ($Failed) {', '"Params (URLEncoded): $requestContent"' # logging to AzF console $Response += " `$requestContent -split '&' | % {"," `$v = `$_ -split '='" $Response += ' if ($v[1]) {Set-Variable -Name $v[0] -Value $v[1]}',' }','}' # FIXME: Above not good because any name gets converted to var # generate code to open default page $Response += '','# prepare output, either default web-page or invoke command' $Response += "if (!`$$Prefix`InvokeCommand) {"," 'show default web page'", ' cd $EXECUTION_CONTEXT_FUNCTIONDIRECTORY', ' $Output = Get-Content .\index.html -Raw' # generate code to prepare parameters splatting $Response += '} else {'," 'invoke command'", ' try {' $Response += " `$ParamsHash = @{}" foreach ($P1 in ($Params | Select -Unique Name, Type)) { $N = $P1.Name if ($P1.Type -eq 'SwitchParameter') { $Response += " if (`$$Prefix$N) {`$ParamsHash.Add('$N',`$True)}" } else { $Response += " if (`$$Prefix$N) {`$ParamsHash.Add('$N',`$$Prefix$N)}" } # TODO: Handle arrays, etc. } # run custom code if ($PreCode) {$Response += " $PreCode"} # generate code to invoke command and handle output $Response += ' "Params: $($ParamsHash.Keys -join `",`")"' # logging to AzF console $Response += " `$Output = $C1 @ParamsHash | Out-String" $Response += ' if ($Output) {$Color = ''white''}',' else {$Color = ''gray''; $Output = ''Command run successfully, but it returned no output''}' $Response += ' } catch {',' $Output = $_',' $Color = ''red''',' }' # TODO: Sometimes not working, error crashes web app $Response += ' $Head = "<head><style>body {background-color: #012456; color: $Color;}</style></head>"' $Response += ' $Back = ''<p><a href="javascript:history.back()" style="color:yellow;">Go Back</a></p>''' $Response += " `$Output = `$Head + '<pre>' + `$Output + `$Back + '</pre>'" $Response += " `$Output = `$Output -replace `"``n`",'</br>'",'}' # convert output to HTML and parse it back $Response += '', '# parse and send back output' $Response += "`$Output2 = [PSCustomObject]@{Status = 200; Body = ''; Headers = @{}}","`$Output2.Headers.Add('content-type','text/html')" $Response += "`$Output2.Body = `$Output -replace '`"',`"'`"" $Response += '','Out-File -Encoding utf8 -FilePath $res -inputObject ($Output2 | ConvertTo-JSON)' } } END { if ($Clipboard) { $Response | Set-Clipboard } elseif ($Invoke) { $TempFile = [System.IO.Path]::GetTempFileName() + '.txt' $Response | Out-File $TempFile Invoke-Item $TempFile } else { $Response } } } |