# ==================================================================== #
# TITLE:                                                               #
# AMR: An R Package for Working with Antimicrobial Resistance Data     #
#                                                                      #
# SOURCE CODE:                                                         #
# https://github.com/msberends/AMR                                     #
#                                                                      #
# PLEASE CITE THIS SOFTWARE AS:                                        #
# Berends MS, Luz CF, Friedrich AW, Sinha BNM, Albers CJ, Glasner C    #
# (2022). AMR: An R Package for Working with Antimicrobial Resistance  #
# Data. Journal of Statistical Software, 104(3), 1-31.                 #
# https://doi.org/10.18637/jss.v104.i03                                #
#                                                                      #
# Developed at the University of Groningen and the University Medical  #
# Center Groningen in The Netherlands, in collaboration with many      #
# colleagues from around the world, see our website.                   #
#                                                                      #
# This R package is free software; you can freely use and distribute   #
# it for both personal and commercial purposes under the terms of the  #
# GNU General Public License version 2.0 (GNU GPL-2), as published by  #
# the Free Software Foundation.                                        #
# We created this package for both routine data analysis and academic  #
# research and it was publicly released in the hope that it will be    #
# useful, but it comes WITHOUT ANY WARRANTY OR LIABILITY.              #
#                                                                      #
# Visit our website for the full manual and a complete tutorial about  #
# how to conduct AMR data analysis: https://msberends.github.io/AMR/   #
# ==================================================================== #

#' Check Availability of Columns
#'
#' Easy check for data availability of all columns in a data set. This makes it easy to get an idea of which antimicrobial combinations can be used for calculation with e.g. [susceptibility()] and [resistance()].
#' @param tbl a [data.frame] or [list]
#' @param width number of characters to present the visual availability - the default is filling the width of the console
#' @details The function returns a [data.frame] with columns `"resistant"` and `"visual_resistance"`. The values in that columns are calculated with [resistance()].
#' @return [data.frame] with column names of `tbl` as row names
#' @export
#' @examples
#' availability(example_isolates)
#' \donttest{
#' if (require("dplyr")) {
#'   example_isolates %>%
#'     filter(mo == as.mo("Escherichia coli")) %>%
#'     select_if(is.sir) %>%
#'     availability()
#' }
#' }
availability <- function(tbl, width = NULL) {
  meet_criteria(tbl, allow_class = "data.frame")
  meet_criteria(width, allow_class = c("numeric", "integer"), has_length = 1, allow_NULL = TRUE, is_positive = TRUE, is_finite = TRUE)

  tbl <- as.data.frame(tbl, stringsAsFactors = FALSE)

  x <- vapply(FUN.VALUE = double(1), tbl, function(x) {
    1 - sum(is.na(x)) / length(x)
  })
  n <- vapply(FUN.VALUE = double(1), tbl, function(x) length(x[!is.na(x)]))
  R <- vapply(FUN.VALUE = double(1), tbl, function(x) ifelse(is.sir(x), resistance(x, minimum = 0), NA_real_))
  R_print <- character(length(R))
  R_print[!is.na(R)] <- percentage(R[!is.na(R)])
  R_print[is.na(R)] <- ""

  if (is.null(width)) {
    width <- getOption("width", 100) -
      (max(nchar(colnames(tbl))) +
        # count col
        8 +
        # available % column
        10 +
        # resistant % column
        10 +
        # extra margin
        5)
    width <- width / 2
  }

  if (length(R[is.na(R)]) == ncol(tbl)) {
    width <- width * 2 + 10
  }

  x_chars_R <- strrep("#", round(width * R, digits = 2))
  x_chars_SI <- strrep("-", width - nchar(x_chars_R))
  vis_resistance <- paste0("|", x_chars_R, x_chars_SI, "|")
  vis_resistance[is.na(R)] <- ""

  x_chars <- strrep("#", round(x, digits = 2) / (1 / width))
  x_chars_empty <- strrep("-", width - nchar(x_chars))

  df <- data.frame(
    count = n,
    available = percentage(x),
    visual_availabilty = paste0("|", x_chars, x_chars_empty, "|"),
    resistant = R_print,
    visual_resistance = vis_resistance,
    stringsAsFactors = FALSE
  )
  if (length(R[is.na(R)]) == ncol(tbl)) {
    df[, 1:3, drop = FALSE]
  } else {
    df
  }
}