#!/bin/bash
# Sets up a new district project based on SSDT default configuration in the current working directory.
#
# Usage:
#
#  /data/preview/sampletown $   /ssdt/compose2/preview/setup.sh [usas,usps...] 
#
# Will create a docker-compose.yml and .env file with default settings.
#
# 
source "$(dirname "${BASH_SOURCE[0]}")/../scripts/.functions.sh"

md5calc() {
   md5sum ${1} ;
}

md5verify() {
   md5sum -c --status ${1} ;
}

genDBHash() {
 echo $(date +%s%N | sha256sum | base64 | head -c 32 ; echo)
}

base=$(dirname "${BASH_SOURCE[0]}")
default_name=$(basename $PWD)

args="$1$2"

usas=""
usps=""

if [ "$args" == "" ] || [ -z "${args##*usas*}" ]
then
   usas=1
fi

if [ "$args" == "" ] || [ -z "${args##*usps*}" ]
then
   usps=1
fi

echo "Preparing '$(basename $PWD)' with default USxS configuration" 

touch .env
source .env

if [ "$COMPOSE_PROJECT_NAME" == "" ]
then
   read -e -p "Enter project name: <${default_name}> " answer
   project_name=${answer:-$default_name}
   echo "COMPOSE_PROJECT_NAME=${project_name}" >> .env
   echo "set project name in .env file"
   source .env
fi

if [ ! -e "docker-compose.yml" ] 
then 
   create="OK"
elif [ -e ".docker-compose.md5" ]; then
   md5verify ./.docker-compose.md5 && create="OK"
fi

if [ "$create" == "OK" ] 
then
    echo "# **** DO NOT MODIFY THIS FILE. ****" > ./docker-compose.yml
    echo "# Place customizations in docker-compose.override.yml and .env" >> ./docker-compose.yml
    echo "version: \"3.3\""     >> ./docker-compose.yml
    echo "services:"            >> ./docker-compose.yml

    [ ! "$usas" == "" ] &&  cat $base/usas-services.yml >> ./docker-compose.yml
    echo "" >> ./docker-compose.yml

    [ ! "$usps" == "" ] &&  cat $base/usps-services.yml >> ./docker-compose.yml
    echo "" >> ./docker-compose.yml

    echo "volumes:" >> ./docker-compose.yml

    if [ ! "$usas" == "" ]
    then    
        echo "  usasdata:" >> ./docker-compose.yml
        [ "$USAS_DB_PASSWORD" == "" ] && echo "USAS_DB_PASSWORD=$(genDBHash)" >> ./.env
    fi
    
    if [ ! "$usps" == "" ]
    then
      echo "  uspsdata:" >> ./docker-compose.yml
      [ "$USPS_DB_PASSWORD" == "" ] &&  echo "USPS_DB_PASSWORD=$(genDBHash)" >> ./.env
    fi
    
    echo "" >> ./docker-compose.yml

    md5calc ./docker-compose.yml > .docker-compose.md5

    echo "created docker-compose.yml"
  
else
    echo "
    
    Error! docker-compose.yml file has been modified or checksum missing.  Can not auto-apply update(s).
           Move customizations to docker-compose.override.yml then delete the docker-compose.yml
"
fi
    
if [ ! -e "docker-compose.override.yml" ] 
then 
   echo 'version: "3.3"' >> docker-compose.override.yml   
fi
    
if [ "$USAS_APPLICATIONID" == "" ]
then
   read -e -p "Generate USAS and USPS integration config? <Y/n> " answer
   case $answer in
        y | Y | yes | YES ) answer="y";;
        n | N | no | NO ) answer="n";;
        *) answer="y"
   esac
   if [ "$answer" == "y" ] 
   then
     usas_id=${COMPOSE_PROJECT_NAME}-usas
     usas_key=$(openssl rand -hex 32)
     usps_id=${COMPOSE_PROJECT_NAME}-usps
     usps_key=$(openssl rand -hex 32)
     echo "USAS_APPLICATIONID=${usas_id}"   >> .env
     echo "USAS_APIKEY=$usas_key"           >> .env
     echo "USPS_APPLICATIONID=${usps_id}"   >> .env
     echo "USPS_APIKEY=$usps_key"           >> .env
     echo "Created integration API keys.  Enable integration modules after applications start"
   fi
fi

if [ "$USAS_APP_HOST" == "" ]
then
   echo "USAS_APP_HOST=usasapp-svr"   >> .env
fi

if [ "$USPS_APP_HOST" == "" ]
then
   echo "USPS_APP_HOST=uspsapp-svr"   >> .env
fi

echo "Review or create a docker-compose.override.yml for custom settings."