refactor: update download.sh

Enhances the dependency checks.

Signed-off-by: Ryan Johnson <[email protected]>

download.sh

@@ -13,6 +13,125 @@ follow_link() {
 # Get the script path.
 script_path=$(realpath "$(dirname "$(follow_link "$0")")")
 
+run_check_dependencies=false
+run_check_jq=false
+run_show_help=false
+
+# This function prompts the user to press Enter to continue.
+press_enter_continue() {
+ printf "Press \033[32mEnter\033[0m to continue.\n"
+ read -r
+ exec "$0"
+}
+
+# This function prompts the user to press Enter to exit.
+press_enter_exit() {
+ printf "Press \033[31mEnter\033[0m to exit.\n"
+ read -r
+ exit 0
+}
+
+if [ $# -eq 0 ]; then
+ run_check_jq=true
+fi
+
+while (("$#")); do
+ case "$1" in
+ --json | -j | -J)
+ json_path="$2"
+ run_check_jq=true
+ shift 2
+ ;;
+ --deps | -d | -D)
+ run_check_dependencies=true
+ shift
+ ;;
+ --help | -h | -H)
+ run_show_help=true
+ shift
+ ;;
+ *)
+ printf "\033[33mInvalid Option:\033[0m $1\n\n"
+ press_enter_exit
+ ;;
+ esac
+done
+
+# This function checks if the required dependencies are installed.
+check_dependencies() {
+ local cmd
+ local RED='\033[0;31m'
+ local GREEN='\033[0;32m'
+ local NC='\033[0m' # No Color
+ local CHECKMARK="${GREEN}[✔]${NC}"
+ local CROSSMARK="${RED}[✘]${NC}"
+ local missing_deps=false
+ local http_client_installed=false
+
+ for cmd in jq wget curl; do
+ if command -v $cmd &>/dev/null; then
+ if [ "$cmd" = "wget" ] || [ "$cmd" = "curl" ]; then
+ http_client_installed=true
+ fi
+ echo -e "$CHECKMARK $cmd is installed."
+ else
+ if [ "$cmd" = "jq" ]; then
+ missing_deps=true
+ echo -e "$CROSSMARK $cmd is not installed."
+ fi
+ fi
+ done
+
+ if ! $http_client_installed; then
+ printf "\033[0;31m[✘]\033[0m Neither \033[0;31mwget\033[0m nor \033[0;31mcurl\033[0m is installed.\n"
+ missing_deps=true
+ fi
+
+ if $missing_deps; then
+ printf "\n"
+ press_enter_exit
+ else
+ printf "\n"
+ press_enter_continue
+ fi
+}
+
+# After the loop, check if check_dependencies needs to be run
+if $run_check_dependencies; then
+ check_dependencies
+fi
+
+# Check for jq
+check_jq() {
+ if ! command -v jq &>/dev/null; then
+ echo -e "\033[0;31m[✘]\033[0m jq is not installed."
+ exit 1
+ fi
+}
+
+# After the loop, check if check_jq needs to be run
+if $run_check_jq; then
+ check_jq
+fi
+
+# This function displays the help message.
+show_help() {
+ script_name=$(basename $0)
+ printf "\nOptions:\n"
+ printf " --deps, -d, -D Check the dependencies.\n"
+ printf " --json, -j, -J Specify the JSON file path.\n"
+ printf " --help, -h, -H Display this help message.\n\n"
+ printf "Note: You can set an environment variable for the Red Hat Subscription Manager offline\n"
+ printf " token to simplify downloading Red Hat Enterprise Linux.\n\n"
+ printf ' \033[32mexport rhsm_offline_token="your_rhsm_offline_token_value"\033[0m\n\n'
+ press_enter_continue
+}
+
+# After the loop, check if show_help needs to be run
+if $run_show_help; then
+ show_help
+fi
+
 # Set the default values for the variables.
 json_path="project.json"
 os_names=$(jq -r '.os[] | .name' $json_path)
@@ -38,14 +157,6 @@ logging_enabled=$(get_settings download_logging_enabled)
 logging_path=$(get_settings download_logging_path)
 logfile_filename=$(get_settings download_logging_filename)
 
-# This function prompts the user to press Enter to continue.
-press_enter() {
- cd "$script_path"
- printf "Press \033[32mEnter\033[0m to continue.\n"
- read -r
- exec $0
-}
-
 # This function displays the information about the script and project.
 info() {
  project_name=$(get_project_info "name")
@@ -62,52 +173,7 @@ info() {
  printf "GitHub Repository: $project_github_url\n"
  printf "Documentation: $project_docs_url\n\n"
  show_help "continue"
- press_enter
-}
-
-# This function checks if a command is installed.
-check_command() {
- local cmd=$1
- if command -v $cmd >/dev/null 2>&1; then
- local version=$($cmd --version | head -n 1)
- print_message info "$cmd is installed."
- else
- print_message error "$cmd is not installed."
- exit 1
- fi
-}
-
-# This function checks if the required dependencies are installed.
-check_dependencies() {
- check_command curl
- check_command wget
- check_command jq
- printf "\nPress \033[32mEnter\033[0m to continue."
- read -r input
- if [[ -z "$input" ]]; then
- return
- else
- printf "\nPress \033[32mEnter\033[0m to continue."
- fi
-}
-
-# This function displays the help message.
-show_help() {
- local exit_after=${1:-"exit"}
- script_name=$(basename $0)
- printf "Usage: $script_name [options]\n\n"
- printf "Options:\n"
- printf " --deps, -d, -D Check the dependencies.\n"
- printf " --json, -j, -J Specify the JSON file path.\n"
- printf " --help, -h, -H Display this help message.\n\n"
- printf "Note: You can set an environment variable for the Red Hat Subscription Manager offline\n"
- printf " token to simplify downloading Red Hat Enterprise Linux.\n\n"
- printf ' \033[32mexport rhsm_offline_token="your_rhsm_offline_token_value"\033[0m\n\n'
- if [[ -z "$input" ]]; then
- [ "$exit_after" = "exit" ] && exit 0
- else
- printf "Press \033[32mEnter\033[0m to continue."
- fi
+ press_enter_continue
 }
 
 # This function prompts the user to go back or quit.
@@ -258,7 +324,7 @@ select_version() {
  # SUSE Linux Enterprise Server is not available for download using this script.
  if [ "$dist" == "SUSE Linux Enterprise Server" ]; then
  printf "\nSUSE Linux Enterprise Server \033[31mis not\033[0m available for download using this script.\n\n"
- press_enter
+ press_enter_continue
  fi
 
  # Check if the selected guest operating system is Windows.
@@ -812,7 +878,7 @@ compare_checksums() {
  fi
  fi
  printf "\n\n"
- press_enter
+ press_enter_continue
  fi
  fi
 }
@@ -844,28 +910,6 @@ rename_file() {
  fi
 }
 
-# Check if the script is run with the --deps option.
-while (("$#")); do
- case "$1" in
- --json | -j | -J)
- json_path="$2"
- shift 2
- ;;
- --deps | -d | -D)
- check_dependencies
- shift
- ;;
- --help | -h | -H)
- show_help
- shift
- ;;
- *)
- print_message error "Unknown option: \033[34m$1\033[0m"
- exit 1
- ;;
- esac
-done
-
 # Check if logging is enabled.
 if [[ "$logging_enabled" == "true" ]]; then
  # If logging_path is empty, use the current directory