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New command - Import-PnPFlow #4854

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233 changes: 233 additions & 0 deletions src/Commands/PowerPlatform/PowerAutomate/ImportFlow.cs
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using PnP.PowerShell.Commands.Attributes;
using PnP.PowerShell.Commands.Base;
using PnP.PowerShell.Commands.Base.PipeBinds;
using PnP.PowerShell.Commands.Utilities;
using PnP.PowerShell.Commands.Utilities.REST;
using System;
using System.IO;
using System.Management.Automation;
using System.Net.Http;
using System.Text.Json;
using System.Text.Json.Nodes;

namespace PnP.PowerShell.Commands.PowerPlatform.PowerAutomate
{
[Cmdlet(VerbsData.Import, "PnPFlow")]
[ApiNotAvailableUnderApplicationPermissions]
[RequiredApiDelegatedPermissions("azure/user_impersonation")]
public class ImportFlow : PnPAzureManagementApiCmdlet
{
[Parameter(Mandatory = true)]
public PowerAutomateFlowPipeBind Identity;

[Parameter(Mandatory = false)]
public PowerPlatformEnvironmentPipeBind Environment;

[Parameter(Mandatory = true)]
public string PackagePath;

[Parameter(Mandatory = false)]
public SwitchParameter CreateAsNew;

[Parameter(Mandatory = false)]
public string Name;

protected override void ExecuteCmdlet()
{
var environmentName = ParameterSpecified(nameof(Environment)) ? Environment.GetName() : PowerPlatformUtility.GetDefaultEnvironment(ArmRequestHelper, Connection.AzureEnvironment)?.Name;
var flowName = Identity.GetName();

var postData = new
{
baseResourceIds = new[] {
$"/providers/Microsoft.Flow/flows/{flowName}"
}
};

string baseUrl = PowerPlatformUtility.GetBapEndpoint(Connection.AzureEnvironment);

// Step 1: Generate a storage URL for the package
var generateResourceUrlResponse = RestHelper.Post(Connection.HttpClient, $"{baseUrl}/providers/Microsoft.BusinessAppPlatform/environments/{environmentName}/generateResourceStorage?api-version=2016-11-01", AccessToken);
WriteVerbose($"Storage resource URL generated: {generateResourceUrlResponse}");

// Parse the response to get the shared access signature URL
var resourceUrlData = JsonSerializer.Deserialize<JsonElement>(generateResourceUrlResponse);
var sasUrl = resourceUrlData.GetProperty("sharedAccessSignature").GetString();


var fileName = Path.GetFileName(PackagePath);
var blobUri = new UriBuilder(sasUrl);
blobUri.Path += $"/{fileName}";

UploadPackageToBlob(blobUri);


// Step 3: Get import parameters with the package link
var importPayload = new
{
packageLink = new
{
value = blobUri.Uri.ToString()
}
};

var importParametersResponse = RestHelper.PostGetResponseHeader<JsonElement>(
Connection.HttpClient,
$"{baseUrl}/providers/Microsoft.BusinessAppPlatform/environments/{environmentName}/listImportParameters?api-version=2016-11-01",
AccessToken,
payload: importPayload,
accept: "application/json"
);
WriteVerbose("Import parameters retrieved");



var importOperationsUrl = importParametersResponse.Location.ToString();

var listImportOperations = RestHelper.Get(
Connection.HttpClient,
importOperationsUrl,
AccessToken,
accept: "application/json"
);

WriteVerbose("Import operations retrieved");

var importOperationsData = JsonSerializer.Deserialize<JsonElement>(listImportOperations);

if (!importOperationsData.TryGetProperty("properties", out JsonElement propertiesElement))
{
WriteObject("Import failed: 'properties' section missing.");
return;
}

bool hasStatus = propertiesElement.TryGetProperty("status", out _);
bool hasPackageLink = propertiesElement.TryGetProperty("packageLink", out _);
bool hasDetails = propertiesElement.TryGetProperty("details", out _);
bool hasResources = propertiesElement.TryGetProperty("resources", out _);

if (!(hasStatus && hasPackageLink && hasDetails && hasResources))
{
WriteObject("Import failed: One or more required fields are missing in 'properties'.");
return;
}
if (!propertiesElement.TryGetProperty("resources", out JsonElement resourcesElement))
{
WriteObject("Import failed: 'resources' section missing in 'properties'.");
return;
}

var resourcesObject = JsonNode.Parse(resourcesElement.GetRawText()) as JsonObject;
var resource = TransformResources(resourcesObject);

// Update the "resources" in the propertiesElement
var validatePackagePayload = CreateImportObject(propertiesElement, resourcesObject);
/*var validatePackagePayload = new JsonObject
{
["details"] = JsonNode.Parse(propertiesElement.GetProperty("details").GetRawText()),
["packageLink"] = JsonNode.Parse(propertiesElement.GetProperty("packageLink").GetRawText()),
["status"] = JsonNode.Parse(propertiesElement.GetProperty("status").GetRawText()),
["resources"] = resource
};*/

var validateResponse = RestHelper.Post(Connection.HttpClient, $"{baseUrl}/providers/Microsoft.BusinessAppPlatform/environments/{environmentName}/validateImportPackage?api-version=2016-11-01", AccessToken, payload: validatePackagePayload);
var validateResponseData = JsonSerializer.Deserialize<JsonElement>(validateResponse);

var importPackagePayload = CreateImportObject(validateResponseData);
var importResult = RestHelper.Post(Connection.HttpClient, $"{baseUrl}/providers/Microsoft.BusinessAppPlatform/environments/{environmentName}/importPackage?api-version=2016-11-01", AccessToken, payload: importPackagePayload);
WriteVerbose("Import package initiated");

WriteObject(importResult);

}

private void UploadPackageToBlob(UriBuilder blobUri)
{
// Step 2: Upload the package to the blob storage using the SAS URL

// Upload using clean HttpClient
using (var blobClient = new HttpClient())
using (var packageFileStream = new FileStream(PackagePath, FileMode.Open, FileAccess.Read))
{
var packageContent = new StreamContent(packageFileStream);
packageContent.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/octet-stream");

var request = new HttpRequestMessage(HttpMethod.Put, blobUri.Uri)
{
Content = packageContent
};

request.Headers.Add("x-ms-blob-type", "BlockBlob");

var uploadResponse = blobClient.SendAsync(request).GetAwaiter().GetResult();

if (!uploadResponse.IsSuccessStatusCode)
{
var errorContent = uploadResponse.Content.ReadAsStringAsync().GetAwaiter().GetResult();
throw new Exception($"Upload failed: {uploadResponse.StatusCode} - {errorContent}");
}
}
}

private JsonObject TransformResources(JsonObject resourcesObject)
{
foreach (var property in resourcesObject)
{
string resourceKey = property.Key;
var resource = property.Value as JsonObject;

if (resource != null && resource.TryGetPropertyValue("type", out JsonNode typeNode))
{
string resourceType = typeNode?.ToString();

if (resourceType == "Microsoft.Flow/flows")
{
if (CreateAsNew)
{
resource["selectedCreationType"] = "New";
if (ParameterSpecified(nameof(Name)))
{
if (resource.TryGetPropertyValue("details", out JsonNode detailsNode) && detailsNode is JsonObject detailsObject)
{
detailsObject["displayName"] = Name;
}
}

}
else
{
resource["selectedCreationType"] = "Existing";
if (resource.TryGetPropertyValue("suggestedId", out JsonNode suggestedIdNode) && suggestedIdNode != null)
{
resource["id"] = JsonValue.Create(suggestedIdNode.ToString());
}
}
}
else if (resourceType == "Microsoft.PowerApps/apis/connections")
{
resource["selectedCreationType"] = "Existing";

// Only set the id if suggestedId exists
if (resource.TryGetPropertyValue("suggestedId", out JsonNode suggestedIdNode) && suggestedIdNode != null)
{
resource["id"] = JsonValue.Create(suggestedIdNode.ToString());
}
}
}
}
return resourcesObject;
}

private JsonObject CreateImportObject(JsonElement importData, JsonObject resourceObject = null)
{
JsonObject resourcesObject = new JsonObject
{
["details"] = JsonNode.Parse(importData.GetProperty("details").GetRawText()),
["packageLink"] = JsonNode.Parse(importData.GetProperty("packageLink").GetRawText()),
["status"] = JsonNode.Parse(importData.GetProperty("status").GetRawText()),
["resources"] = resourceObject ?? JsonNode.Parse(importData.GetProperty("resources").GetRawText())
};
return resourcesObject;
}
}
}
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