get_dummy_data <- function(type) {
  if (type %in% c("text", "select_one", "select_multiple")) return("dummy")
  if (type %in% c("radio", "checkbox")) return("dummy")
  if (type %in% c("date")) return(as.Date("1990-01-01"))
  if (type %in% c("number")) return(as.double(999))
}

get_empty_data <- function(type) {
  if (type %in% c("text", "select_one", "select_multiple")) return(as.character(NA))
  if (type %in% c("radio", "checkbox")) return(as.character(NA))
  if (type %in% c("date")) return(as.Date(NA))
  if (type %in% c("number")) return(as.character(NA))
}

get_dummy_df <- function() {
  purrr::map(
    .x = inputs_simple_list,
    .f = get_empty_data
  ) %>%
    as_tibble()
}


#' @description Function check if variable contains some sort of empty data
#' (NULL, NA, "", other 0-length data) and return `TRUE` (`FALSE` if data is
#' not 'empty').
#'
#' Needed for proper data validation.
check_for_empty_data <- function(value_to_check) {
  # for any 0-length
  if (length(value_to_check) == 0) return(TRUE)

  # for NA
  if (is.logical(value_to_check) && is.na(value_to_check)) return(TRUE)

  # for NULL
  if (is.null(value_to_check)) return(TRUE)

  # for non-empty Date (RETURN FALSE)
  if (inherits(value_to_check, "Date") && length(value_to_check) != 0) return(FALSE)

  # for empty strings (stands before checking non-empty data for avoid mistakes)
  if (value_to_check == "") return(TRUE)

  FALSE
}


#' @description Function update input forms.
#' @param id - input form id;
#' @param type - type of form;
#' @param value - value to update;
update_forms_with_data <- function(id, type, value) {
  if (type == "text") {
    shiny::updateTextAreaInput(inputId = id, value = value)
  }

  if (type == "number") {
    shiny::updateTextAreaInput(inputId = id, value = value)
  }

  # supress warnings when applying NA or NULL to date input form
  if (type == "date") {
    suppressWarnings(
      shiny::updateDateInput(inputId = id, value = value)
    )
  }

  # select_one
  if (type == "select_one") {
    shiny::updateSelectizeInput(inputId = id, selected = value)
  }

  # select_multiple
  # check if value is not NA and split by delimetr
  if (type == "select_multiple" && !is.na(value)) {
    vars <- stringr::str_split_1(value, "; ")
    shiny::updateSelectizeInput(inputId = id, selected = vars)
  }
  # in other case fill with `character(0)` to proper reseting form
  if (type == "select_multiple" && is.na(value)) {
    shiny::updateSelectizeInput(inputId = id, selected = character(0))
  }

  # radio buttons
  if (type == "radio" && !is.na(value)) {
    shiny::updateRadioButtons(inputId = id, selected = value)
  }
  if (type == "radio" && is.na(value)) {
    shiny::updateRadioButtons(inputId = id, selected = character(0))
  }

  # checkboxes
  if (type == "checkbox" && !is.na(value)) {
    vars <- stringr::str_split_1(value, "; ")
    shiny::updateCheckboxGroupInput(inputId = id, selected = vars)
  }
  if (type == "checkbox" && is.na(value)) {
    shiny::updateCheckboxGroupInput(inputId = id, selected = character(0))
  }

  if (type == "inline_table") {
    message("EMPTY")
  }
}