// Copyright (c) Microsoft Corporation. All rights reserved.

// Licensed under the MIT License.

using System;

using System.Management.Automation;

using Microsoft.PowerShell.PSResourceGet.UtilClasses;

namespace Microsoft.PowerShell.PSResourceGet.Cmdlets

{

/// <summary>

/// Retrieve the contents of a .ps1 file

/// </summary>

[Cmdlet(VerbsCommon.Get, "PSScriptFileInfo")]

[OutputType(typeof(PSScriptFileInfo))]

public sealed class GetPSScriptFileInfo : PSCmdlet

{

#region Parameters

/// <summary>

/// The path to the .ps1 file to retrieve.

/// </summary>

[Parameter(Position = 0, Mandatory = true, HelpMessage = "Path (including file name) to the script file (.ps1 file) to retrieve and view.")]

[ValidateNotNullOrEmpty]

public string Path { get; set; }

#endregion

#region Methods

protected override void EndProcessing()

{

if (!Path.EndsWith(".ps1", StringComparison.OrdinalIgnoreCase))

{

ThrowTerminatingError(new ErrorRecord(

new ArgumentException("The script file pathname must end with a .ps1 file extension. Example: C:/Users/john/x/MyScript.ps1"),

"InvalidPath",

ErrorCategory.InvalidArgument,

this));

}

var resolvedPaths = GetResolvedProviderPathFromPSPath(Path, out ProviderInfo provider);

if (resolvedPaths.Count != 1)

{

ThrowTerminatingError(new ErrorRecord(

new PSArgumentException("Error: Could not resolve provided Path argument into a single path."),

"InvalidPathArgumentError",

ErrorCategory.InvalidArgument,

this));

}

var resolvedPath = resolvedPaths[0];

bool isValidScript = PSScriptFileInfo.TryTestPSScriptFileInfo(

scriptFileInfoPath: resolvedPath,

parsedScript: out PSScriptFileInfo psScriptFileInfo,

errors: out ErrorRecord[] errors,

out string[] debugMsgs);

if (!isValidScript)

{

string fileName = System.IO.Path.GetFileName(resolvedPath);

var exMessage = $"Error: '{fileName}' script file is invalid. The script file must include Version, Guid, Description and Author properties.";

foreach (ErrorRecord error in errors)

{

exMessage += Environment.NewLine + error.Exception.Message;

}

ThrowTerminatingError(new ErrorRecord(

new PSArgumentException(exMessage),

"InvalidPSScriptFile",

ErrorCategory.InvalidArgument,

this));

}

PSObject psScriptFileInfoWithName = new PSObject(psScriptFileInfo);

string Name = System.IO.Path.GetFileNameWithoutExtension(resolvedPath);

psScriptFileInfoWithName.Properties.Add(new PSNoteProperty(nameof(Name), Name));

foreach (string msg in debugMsgs)

{

WriteDebug(msg);

}

WriteObject(psScriptFileInfoWithName);

}

#endregion

}

}