/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing for details.  */
#include "cmQTWrapCPPCommand.h"

#include "cmCustomCommandLines.h"
#include "cmMakefile.h"
#include "cmSourceFile.h"
#include "cmSystemTools.h"

#include <utility>

class cmExecutionStatus;

// cmQTWrapCPPCommand
bool
cmQTWrapCPPCommand::InitialPass(std::vector<std::string> const& args,
                                cmExecutionStatus&)
{
    if(args.size() < 3)
    {
        this->SetError("called with incorrect number of arguments");
        return false;
    }

    // Get the moc executable to run in the custom command.
    std::string const& moc_exe =
        this->Makefile->GetRequiredDefinition("QT_MOC_EXECUTABLE");

    // Get the variable holding the list of sources.
    std::string const& sourceList = args[1];
    std::string sourceListValue = this->Makefile->GetSafeDefinition(sourceList);

    // Create a rule for all sources listed.
    for(std::vector<std::string>::const_iterator j = (args.begin() + 2);
        j != args.end(); ++j)
    {
        cmSourceFile* curr = this->Makefile->GetSource(*j);
        // if we should wrap the class
        if(!(curr && curr->GetPropertyAsBool("WRAP_EXCLUDE")))
        {
            // Compute the name of the file to generate.
            std::string srcName =
                cmSystemTools::GetFilenameWithoutLastExtension(*j);
            std::string newName = this->Makefile->GetCurrentBinaryDirectory();
            newName += "/moc_";
            newName += srcName;
            newName += ".cxx";
            cmSourceFile* sf = this->Makefile->GetOrCreateSource(newName, true);
            if(curr)
            {
                sf->SetProperty("ABSTRACT", curr->GetProperty("ABSTRACT"));
            }

            // Compute the name of the header from which to generate the file.
            std::string hname;
            if(cmSystemTools::FileIsFullPath(*j))
            {
                hname = *j;
            } else
            {
                if(curr && curr->GetPropertyAsBool("GENERATED"))
                {
                    hname = this->Makefile->GetCurrentBinaryDirectory();
                } else
                {
                    hname = this->Makefile->GetCurrentSourceDirectory();
                }
                hname += "/";
                hname += *j;
            }

            // Append the generated source file to the list.
            if(!sourceListValue.empty())
            {
                sourceListValue += ";";
            }
            sourceListValue += newName;

            // Create the custom command to generate the file.
            cmCustomCommandLine commandLine;
            commandLine.push_back(moc_exe);
            commandLine.push_back("-o");
            commandLine.push_back(newName);
            commandLine.push_back(hname);

            cmCustomCommandLines commandLines;
            commandLines.push_back(std::move(commandLine));

            std::vector<std::string> depends;
            depends.push_back(moc_exe);
            depends.push_back(hname);

            std::string no_main_dependency;
            const char* no_working_dir = nullptr;
            this->Makefile->AddCustomCommandToOutput(
                newName, depends, no_main_dependency, commandLines,
                "Qt Wrapped File", no_working_dir);
        }
    }

    // Store the final list of source files.
    this->Makefile->AddDefinition(sourceList, sourceListValue.c_str());
    return true;
}
