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package m.watershed.d8flowdir;

import csip.ModelDataService;
import javax.ws.rs.Path;
import csip.annotations.*;
import java.io.*;
import csip.annotations.Resource;
import static csip.annotations.ResourceType.*;
import csip.api.server.Executable;

/**
 * flow direction
 *
 * @author JK (using OD's template)
 */
@Name("d8flowdir")
@Description("Example of eight flow direction")
@Path("m/d8flowdir/1.0")
//@Resource(file = "mpirun", type = REFERENCE, id = "mpirun")
@Resource(file = "/bin/lin-amd64/d8flowdir", type = EXECUTABLE, id = "d8flowdir")

public class V1_0 extends ModelDataService {

    // 2) watershed 
    @Override
    protected void doProcess() throws Exception {

        String file1 = parameter().getString("dem_fill");
        File file_obj = attachments().getFile(file1);
        String DEM_fill_path = file_obj.getPath();
        String wd = workspace().getDir().toString();

        //Executable e = resources().getExe("mpirun");
        //File e2 = resources().getFile("d8flowdir");
        Executable e = resources().getExe("d8flowdir");
        //e.addArguments("-np", "2", "-host", "localhost", e2.getAbsolutePath(), "-fel", DEM_fill_path, "-sd8", wd + "/sd8.tif", "-p", wd +"/p.tif");        
        e.addArguments("-fel", DEM_fill_path, "-sd8", wd + "/sd8.tif", "-p", wd + "/p.tif");
        e.exec();
    }

    // 3) provide a result.
    @Override
    protected void postProcess() throws Exception {
        File ws = workspace().getDir();
        results().put(new File(ws, "sd8.tif"), "slope raster");
        results().put(new File(ws, "p.tif"), "flow direction raster");

    }

}