docker-set

#!/usr/bin/env bash

# user will run: ./docker-set -p <name-of-pre-run-script>
# this script will:
# 1. validate option -p
# 2. script will ask if you want to backup current pre-run file if it exists - if so, what name. save as pre-run/pre-run-<name>
# 3. this script will: find in pre-run/pre-run-<name-of-pre-run-script> and cp to pre-run/pre-run

####

# 1. Validate option -p

# command is: ./docker-set -p <name-of-pre-run-script> 
# get the <name-of-pre-run-script> from the command
# store in variable P
while getopts ":hp:" opt; do
  case $opt in
    h) printf "ℹ️  How to use:\n./docker-set -p <pre-run-script-suffix>\n"
    exit 1
    ;;
    p) P="$OPTARG"
    ;;
    \?) printf "============ ❌ Invalid option -$OPTARG\n" >&2
    exit 1
    ;;
  esac
done

# if P is empty or the file pre-run/pre-run-$P does not exist - exit
if [ -z "$P" ] || [ ! -f pre-run/pre-run-$P ]; then
    printf "============ ❌ pre-run/pre-run-$P does not exist\n"
    exit 1
fi

# 2. does pre-run/pre-run exist? do you want to back it up? what name to save as?

if [ -f pre-run/pre-run ]; then
    read -p "============ 🤔 Pre-run script detected. Backup pre-run/pre-run? (y/n)" -n 1 -r
    printf "\n"
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        read -p "============ 🤔 What name to save as? " -r
        printf "\n"
        cp pre-run/pre-run pre-run/pre-run-$REPLY
        printf "============ ✅ pre-run/pre-run saved as pre-run/pre-run-$REPLY\n"
    fi
fi

# 3. find in pre-run/pre-run-<name-of-pre-run-script> and cp to pre-run/pre-run

cp pre-run/pre-run-$P pre-run/pre-run
printf "============ ✅ pre-run/pre-run-$P copied to pre-run/pre-run\n"