initial commit.

setup.sh

@@ -0,0 +1,80 @@
+#!/bin/bash
+# env setup script for docker compose .env setup
+# 2023-01-06 by dede & dany
+
+env_sample="env.sample"
+
+dirname=$(basename "$(dirname "${BASH_SOURCE[0]}")")
+echo "$dirname docker compose setup"
+echo "> env setup for $dirname with docker compose"
+
+# check for existing .env file to not break an existing setup
+if [[ -f .env ]]; then
+  if [[ "$1" == "-f" ]]; then
+    echo ".env file already exists. force param is set. .env will be overwritten."
+  else
+    echo ".env file already exists. setup will not run."\
+      "either rename/delete it first or run this script with force param like this: "
+    echo "$ ./${0##*/} -f"
+    exit 1
+  fi
+elif [[ ! -f $env_sample ]]; then
+  echo "> $env_sample file is missing. cannot run."
+  exit 2
+fi
+
+# create .env file
+echo -e "# file generated by ${0##*/} on $(date +"%F %H:%M") by $USER\n" > .env
+
+# step through the list of lines and ask for each key to use default value or set value
+# for each line in configfile
+while read -r -u 3 line; do
+
+  # keep blank and comment lines
+  if [[ -z $line ]] || [[ $line == \#* ]]; then
+    echo "$line" >> .env
+
+  # handle variable lines
+  else
+    # split line by '=' into key and value
+    readarray -d "=" -t currvar<<< "$line"
+
+    # preset value with default
+    value=${currvar[1]::-1}
+
+    # check if there's a password to generate
+    if [[ ${currvar[0]} =~ (PASS|PASSWORD|PWD|PASSWD)$ ]]; then
+      value=$(openssl rand -base64 29 | tr -d "=+/" | cut -c1-25)
+    fi
+
+    # ask for user input
+    echo -n "please enter value for ${currvar[0]} [$value]: "
+    read -r userinput
+
+    # set userinput as new value if any
+    if [ -n "$userinput" ]; then
+      value=$userinput
+    fi
+
+    # check if there's a directory to create
+    if [[ ${currvar[0]} =~ (DIR|DIRECTORY)$ ]]; then
+      if [[ ! -d $value ]]; then
+        echo -n "do you want to create the directory? [Y/n]: "
+        read -r createdir
+        if [[ $createdir =~ ^([yY]|)$ ]]; then
+          mkdir -p "$value"
+          echo "directory created."
+        fi
+      else
+        echo "directory already exists."
+        if [ -n "$(ls -A "$value")" ]; then
+          echo "WATCH OUT! the directory is NOT empty. please ensure this is intended."
+        fi
+      fi
+    fi
+
+    # now append the line    
+    echo "${currvar[0]}=$value" >> .env
+
+  fi
+done 3< $env_sample