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#region Task TaskName="HostExec" Condition="'$(ApplicationType)' == 'Linux' AND '$(PlatformToolset)' != 'WSL_1_0'"

#region Reference
//$(VCTargetsPath)\Application Type\Linux\1.0\Microsoft.Build.Linux.Tasks.dll
#endregion

#region Using
using System.Collections.Generic;
using System.Linq;
using Microsoft.Build.Framework;
#endregion

#region Comment
/////////////////////////////////////////////////////////////////////////////////////////////////
/// TASK HostExec
///  * Linux build over SSL
/////////////////////////////////////////////////////////////////////////////////////////////////
// Run command in build host.
// Parameters:
//     in string      Command: Command to run on the build host
//     in string      RedirectStdOut: Path to file to receive redirected output messages
//                      * can be NUL to discard messages
//     in string      RedirectStdErr: Path to file to receive redirected error messages
//                      * can be NUL to discard messages
//                      * can be STDOUT to apply the same redirection as output messages
//     in string      WorkingDirectory: Path to directory where command will be run
//     in ITaskItem[] Inputs: List of local -> host path mappings for command inputs
//                      * item format: cf. HostTranslatePaths task
//     in ITaskItem[] Outputs: List of host -> local path mappings for command outputs
//                      * item format: cf. HostTranslatePaths task
//     in string      RemoteTarget: Set by ResolveRemoteDir in SSH mode; null otherwise
//     in string      RemoteProjectDir: Set by ResolveRemoteDir in SSH mode; null otherwise
//     in bool        IgnoreExitCode: Set flag to disable build error if command failed
//    out int         ExitCode: status code at command exit
#endregion

namespace QtVsTools.QtMsBuild.Tasks
{
    public static class HostExec_LinuxSSL
    {
        public static QtMSBuild.ITaskLoggingHelper Log { get; set; }
        public static IBuildEngine BuildEngine { get; set; }
        public static ITaskHost HostObject { get; set; }

        public static bool Execute(
        #region Parameters
            System.String Command,
            out System.Int32 ExitCode,
            System.String Message = null,
            System.String RedirectStdOut = null,
            System.String RedirectStdErr = null,
            System.String WorkingDirectory = null,
            Microsoft.Build.Framework.ITaskItem[] Inputs = null,
            Microsoft.Build.Framework.ITaskItem[] Outputs = null,
            System.String RemoteTarget = null,
            System.String RemoteProjectDir = null,
            System.Boolean IgnoreExitCode = false)
        #endregion
        {
            #region Code
            if (!string.IsNullOrEmpty(Message))
                Log.LogMessage(MessageImportance.High, Message);
            var createDirs = new List<string>
            {
                string.Format("{0}/{1}", RemoteProjectDir, WorkingDirectory)
            };

            var localFilesToCopyRemotelyMapping = new string[0];
            if (Inputs != null) {
                localFilesToCopyRemotelyMapping = Inputs
                    .Select(x => string.Format(@"{0}:={1}/{2}",
                        x.GetMetadata("Item"),
                        RemoteProjectDir,
                        x.GetMetadata("Value")))
                    .ToArray();
                createDirs.AddRange(Inputs
                    .Select(x => string.Format("\x24(dirname {0})", x.GetMetadata("Value"))));
            }

            var remoteFilesToCopyLocallyMapping = new string[0];
            if (Outputs != null) {
                remoteFilesToCopyLocallyMapping = Outputs
                  .Select(x => string.Format(@"{0}/{1}:={2}",
                      RemoteProjectDir,
                      x.GetMetadata("Value"),
                      x.GetMetadata("Item")))
                  .ToArray();
                createDirs.AddRange(Outputs
                    .Select(x => string.Format("\x24(dirname {0})", x.GetMetadata("Value"))));
            }

            Command = "(" + Command + ")";
            if (RedirectStdOut == "NUL" || RedirectStdOut == "/dev/null")
                Command += " 1> /dev/null";
            else if (!string.IsNullOrEmpty(RedirectStdOut))
                Command += " 1> " + RedirectStdOut;
            if (RedirectStdErr == "NUL" || RedirectStdErr == "/dev/null")
                Command += " 2> /dev/null";
            else if (RedirectStdErr == "STDOUT")
                Command += " 2>&1";
            else if (!string.IsNullOrEmpty(RedirectStdErr))
                Command += " 2> " + RedirectStdErr;
            Command = string.Format("cd {0}/{1}; {2}", RemoteProjectDir, WorkingDirectory, Command);

            var taskCopyFiles = new Microsoft.Build.Linux.Tasks.Execute()
            {
                BuildEngine = BuildEngine,
                HostObject = HostObject,
                ProjectDir = @"$(ProjectDir)",
                IntermediateDir = @"$(IntDir)",
                RemoteTarget = RemoteTarget,
                RemoteProjectDir = RemoteProjectDir,
                Command = string.Join("; ", createDirs.Select(x => string.Format("mkdir -p {0}", x))),
                LocalFilesToCopyRemotelyMapping = localFilesToCopyRemotelyMapping,
            };
            var taskExec = new Microsoft.Build.Linux.Tasks.Execute()
            {
                BuildEngine = BuildEngine,
                HostObject = HostObject,
                ProjectDir = @"$(ProjectDir)",
                IntermediateDir = @"$(IntDir)",
                RemoteTarget = RemoteTarget,
                RemoteProjectDir = RemoteProjectDir,
                Command = Command,
                RemoteFilesToCopyLocallyMapping = remoteFilesToCopyLocallyMapping,
            };

            Log.LogMessage("\r\n==== HostExec: Microsoft.Build.Linux.Tasks.Execute");
            Log.LogMessage("ProjectDir: {0}", taskExec.ProjectDir);
            Log.LogMessage("IntermediateDir: {0}", taskExec.IntermediateDir);
            Log.LogMessage("RemoteTarget: {0}", taskExec.RemoteTarget);
            Log.LogMessage("RemoteProjectDir: {0}", taskExec.RemoteProjectDir);
            if (taskExec.LocalFilesToCopyRemotelyMapping.Any())
                Log.LogMessage("LocalFilesToCopyRemotelyMapping: {0}",
                    taskExec.LocalFilesToCopyRemotelyMapping);
            if (taskExec.RemoteFilesToCopyLocallyMapping.Any())
                Log.LogMessage("RemoteFilesToCopyLocallyMapping: {0}",
                    taskExec.RemoteFilesToCopyLocallyMapping);
            Log.LogMessage("CreateDirs: {0}", taskCopyFiles.Command);
            Log.LogMessage("Command: {0}", taskExec.Command);

            if (!taskCopyFiles.ExecuteTool()) {
                ExitCode = taskCopyFiles.ExitCode;
                return false;
            }
            bool ok = taskExec.ExecuteTool();
            Log.LogMessage("== {0} ExitCode: {1}\r\n", ok ? "OK" : "FAIL", taskExec.ExitCode);

            ExitCode = taskExec.ExitCode;
            if (!ok && !IgnoreExitCode) {
                Log.LogError("Host command failed.");
                return false;
            }
            #endregion

            return true;
        }
    }
}
#endregion