#!/bin/bash

# Get the coluns and lines of the "screen"
cols=$(tput cols)
lines=$(tput lines)
# Settings to improve accessibility of dialog.
export DIALOGOPTS='--insecure --no-lines --visit-items'

inputbox() {
    # Returns: text entered by the user
    # Args 1, Instructions for box.
    # args: 2 initial text (optional)
    dialog --backtitle "$(gettext "Enter text and press enter.")" \
        --clear \
        --inputbox "$1" 0 0 "$2" --stdout
}

msgbox() {
# Returns: None
# Shows the provided message on the screen with an ok button.
dialog --clear --msgbox "$*" 10 72
}

infobox() {
    # Returns: None
    # Shows the provided message on the screen with no buttons.
   local timeout=3 
    dialog --infobox "$*" 0 0
    read -n1 -t $timeout continue
    # Clear any keypresses from the buffer
    clear_buffer
}

yesno() {
    # Returns: Yes or No
    # Args: Question to user.
    # Called  in if $(yesno) == "Yes"
    # Or variable=$(yesno)
    if dialog --clear --backtitle "$(gettext "Press 'Enter' for \"yes\" or 'Escape' for \"no\".")" --yesno "$*" 0 0 ; then 
        echo "Yes"
    else
        echo "No"
    fi
}

get_keypress() {
    # Returnes the pressed key.
    # There arre two ways to use this function.
    # first way, get_keypress variableName
    # Second way variableName="$(get_keypress)"
    # This variable name is long to absolutely minimize possibility of collision.
    local getKeypressFunctionReturnVariable=$1
    local returnedKeypress
    # Unset IFS to capture any key that is pressed.
    local ifs="$IFS"
    unset IFS
    read -sn1 returnedKeypress
    # Restore IFS
    IFS="$ifs"
    if [[ $getKeypressFunctionReturnVariable ]]; then
        eval $getKeypressFunctionReturnVariable="'$returnedKeypress'"
    else
        echo "$returnedKeypress"
    fi
}

menulist() {
    # Args: menu options
    # returns: selected option
    # set gameMenu to control the message.
    declare -a menuList
    for i in $@ ; do
        menuList+=("$i" "$i")
    done
    dialog --backtitle "${menuMessage:-Game menu...}" \
        --clear \
        --no-tags \
        --menu "Please make your selection" 0 0 0 "${menuList[@]}" --stdout
}

numpicker() {
    # Args: max number, Min numberr optional.
    # returns: selected number
    # set gameMenu to control the message.
    declare -a menuList
    local max=$1
    local min=${2:-10}
    for i in $(seq $min $max) ; do
        menuList+=("$i" "$i")
    done
    dialog --backtitle "${menuMessage:-Numeric menu...}" \
        --clear \
        --no-tags \
        --menu "Please select a number between $min and $max." 0 0 0 "${menuList[@]}" --stdout
}