#!/usr/bin/Rscript
#message(getwd());

checks_info <- 
    utils:::read.table("plugins_hosts_services.tab",
                       sep       = "\t",
                       header    = TRUE,
                       quote     = "",
                       row.names = NULL,
                       check.names = FALSE,
                       as.is     = TRUE);

## test_results has a value equal to the exit status of the scripts with arguments command_line_arguments run.

check_exit_status <- 
    base:::integer(length = base:::nrow(checks_info));
check_stdout <- 
    base:::character(length = base:::nrow(checks_info));
#test_stderr 
#   <- character(length = length(command_line_arguments));
## X- stderr output cannot be caught separately yet due to R implementation issue

command_lines <- 
    base:::list();

for (test_index in 1L:base:::nrow(checks_info))
{
    base:::message(base:::paste("Checking", checks_info[test_index,]$description, "..."));

    command_line <- 
        base:::c(checks_info[test_index,]$`file name`, 
                 "-h", checks_info[test_index,]$`-h`);
    
    if (checks_info[test_index,]$`-u` != "") {
        command_line <- 
            base:::c(command_line, 
                     '-u', checks_info[test_index,]$`-u`);
    }
    if (checks_info[test_index,]$`-b` != "") {
        command_line <- 
            base:::c(command_line, 
                     '-b', checks_info[test_index,]$`-b`);
    }
    if (checks_info[test_index,]$`-d` != "") {
        command_line <- 
            base:::c(command_line, 
                     '-d', checks_info[test_index,]$`-d`);
    }
    if (!base:::is.na(checks_info[test_index,]$`-p`)) {
        command_line <- 
            base:::c(command_line, 
                     '-p', checks_info[test_index,]$`-p`);
    }


    test_output <-
        base:::system2(command = "python",
                        args    = command_line,
                        stdout  = TRUE,
                        stderr  = TRUE);

    ## Fetch exit status codes.  
    if(!base:::is.null(base:::attr(test_output, "status"))) {
        check_exit_status[test_index] <- 
            base:::as.integer(base:::attr(test_output, "status"));
    } else { 
        check_exit_status[test_index] <- 
            0L;
    };

    check_stdout[test_index] <-
        base:::paste(test_output, 
                      sep = "\n", 
                      collapse = "\n");

    command_lines <- 
        base:::c(command_lines, base:::paste(command_line, collapse = " "));

    #browser();
}

#browser();

test_results_df <- 
    base:::data.frame(description             = checks_info$description,
                      command_line            = base:::unlist(command_lines), 
                      check_exit_status       = check_exit_status, 
                      check_stdout            = check_stdout,
                      stringsAsFactors        = FALSE);

#browser();

test_results_file_path <- 
    "/tmp/Nagios_checks_test.tab";

utils:::write.table(test_results_df,
                   file            = test_results_file_path,
                   col.names       = TRUE,
                   row.names       = FALSE,
                   sep             = "\t");

base:::message(base:::paste("Written test results to TAB-separated table at '", test_results_file_path, "' ...", sep = ""));