#!/bin/bash

# Run this script with "(sudo) bash <filename> <args>".

# Exit on error.
set -e

UNDER_PATH=${1:-`pwd`}
OWNER=${2:-www-data}
OWNER_GROUP=${3:-`id -gn $OWNER`}

PRIVATE_DIRS="data tmp sessions"
PUBLIC_DIRS="public"

printf 'Create site directories in "%s" owned by "%s" with group "%s"...

Is this correct?

OK = cd /var/www && sudo bash %s ./mysite.com <user> <group>
OK = sudo bash %s /var/www/mysite.com
AVOID = sudo bash %s /var/www/mysite.com/site2.com

<user> & <group> are optional, both default to www-data user/group.

The parent directory must already exist, this script will NOT
recursively create directories.

Press ctrl+c to cancel or enter to continue...' \
"$UNDER_PATH" "$OWNER" "$OWNER_GROUP" "$0" "$0" "$0"
read

[[ "$UNDER_PATH" == "/" ]] && (
    printf "Do you really want to create this folder in your root path?

Press ctrl+c to cancel or hit enter to confirm...
" \
    "$UNDER_PATH"
    read
)

[[ -z "$OWNER_GROUP" ]] && (
    printf '\nNo group for user "%s"!
' "$OWNER"
    exit 1
)

printf 'Creating folders with user "%s" and group "%s"...
' "$OWNER" "$OWNER_GROUP"

mkdir "$UNDER_PATH"
cd "$UNDER_PATH"

mkdir ".test"
chown "$OWNER":"$OWNER_GROUP" .test || (
    printf 'Failed change permissions of test folder :(.

-> Check the user and/or group exist!
-> You may need to be root or use sudo to run this script.
'
    exit 1
 )

[[ -d ".test" ]] && rm -R ".test"

# Create the private & public folders then set permissions...
for private_folder in $PRIVATE_DIRS; do
    mkdir -v "$private_folder"
    chown -v "$OWNER":"$OWNER_GROUP" "$private_folder"
    chmod -cR 750 "$private_folder"
    chmod -cR u+s,g+s,o+s "$private_folder"
done

for public_folder in $PUBLIC_DIRS; do
    mkdir -v "$public_folder"
    chown -v "$OWNER":"$OWNER_GROUP" "$public_folder"
    chmod -cR 755 "$public_folder"
    chmod -cR u+s,g+s,o+s "$public_folder"
done