#! /bin/bash

set -e
set -u

VERSION=v0.0
SYN_HTTP_PORT=8008
SYN_HTTPS_PORT=8448
DISC_PORT=9006
RIOT_PORT=8889
DOMAIN=localhost

function main() {
   cd "$(dirname "${BASH_SOURCE[0]}")"
   setup_modules
   build_modules | while read -r line; do
      echo EVAL: $line
      eval "$line"
   done
   run_modules
}

function setup_modules() {
   git submodule update
   for i in $(cat ./.gitmodules | grep path | awk '{print $NF}'); do
      pushd "./${i}"
      echo SETUP $(basename "$i")
      checkout_latest_tag
      popd
   done
}

function checkout_latest_tag() {
   git fetch --tags
   local tag="$(git tag | sort | tail -n 1)"
   git checkout $tag
}

function build_modules() {
   ( docker network create riot-matrix-net || true ) >&2
   for i in $(cat ./.gitmodules | grep path | awk '{print $NF}' | sed 's/docker-matrix-riot/docker-matrix-riot-ptt/' ); do
      pushd "./${i}" >&2
      echo BUILD $(basename "$i") >&2
      build_module "$(basename "$i")" | tail -n 1
      popd >&2
   done
}

function build_module() {
   local basename="$1"
   local img="bel/$basename:$VERSION"
   local mnt="$(dirname "$(pwd)")/mnt/$basename"
   local pre=()
   local post=()
   local run=""
   local f=$(mktemp)
   local g=$(mktemp)
   case "$basename" in
      docker-matrix )
         run="-p $SYN_HTTPS_PORT:$SYN_HTTPS_PORT -p $SYN_HTTP_PORT:$SYN_HTTP_PORT -p 3478:3478 $img start"
         post+=("docker run --rm -i -e SERVER_NAME=$DOMAIN -e REPORT_STATS=no -v $mnt:/data $img generate")
         post+=("sudo cp $mnt/homeserver.yaml $f")
         post+=("sed 's/enable_registration:.*/enable_registration: True/' $f > $g; mv $g $f")
         post+=("sed 's/enable_group_creation: false/enable_group_creation: true/' $f > $g; mv $g $f")
         post+=("sed 's/    - port: 8008/    - port: $SYN_HTTP_PORT/' $f > $g; mv $g $f")
         post+=("sed 's/    port: 8448/    port: $SYN_HTTPS_PORT/' $f > $g; mv $g $f")
         post+=("sed 's/    bind_addresses:.*/    bind_addresses: [\"::\", \"0.0.0.0\"]/' $f > $g; mv $g $f")
         post+=("sed 's/app_service_config_files.*$/app_service_config_files: [ \\/data\\/discord-registration.yaml ]/' $f > $g; mv $g $f")
         post+=("echo 'auto_join_rooms: [ \"#welcome:$DOMAIN\" ]' >> $f")
         post+=("sudo mv $f $mnt/homeserver.yaml")
      ;;
      docker-matrix-riot* )
         run="-p $RIOT_PORT:$RIOT_PORT $img"
         post+=("touch $mnt/riot.im.conf")
         post+=("echo '-p $RIOT_PORT' > $mnt/riot.im.conf")
         post+=("echo '-A 0.0.0.0' >> $mnt/riot.im.conf")
         post+=("echo '-c 3500' >> $mnt/riot.im.conf")
         post+=("curl https://raw.githubusercontent.com/vector-im/riot-web/develop/config.sample.json > $mnt/config.json")
         post+=("sed 's/\"default_hs_url\".*/\"default_hs_url\":\"http:\\/\\/docker-matrix:8008\",/' $mnt/config.json > $f; mv $f $mnt/config.json")
         post+=("sed 's/\"default_is_url\".*/\"default_is_url\":\"http:\\/\\/docker-matrix:8008\",/' $mnt/config.json > $f; mv $f $mnt/config.json")
         #post+=("echo '--ssl' >> $mnt/config.json")
         #post+=("echo '--cert /data/cert.pem' >> $mnt/config.json")
         #post+=("echo '--key /data/key.pem' >> $mnt/config.json")
      ;;
      matrix-appservice-discord* )
         run="-p $DISC_PORT:$DISC_PORT $img"
         post+=("cp config/config.sample.yaml $mnt/config.yaml")
         post+=("sed 's/  domain: .*$/  domain: $DOMAIN/' $mnt/config.yaml > $f; mv $f $mnt/config.yaml")
         post+=("sed 's/  homeserverUrl: .*$/  homeserverUrl: http:\\/\\/$DOMAIN:$SYN_HTTP_PORT/' $mnt/config.yaml > $f; mv $f $mnt/config.yaml")
         post+=("sed 's/  userStorePath:.*$/  userStorePath: \/data\/user-store.db/' $mnt/config.yaml > $f; mv $f $mnt/config.yaml")
         post+=("sed 's/  roomStorePath:.*$/  roomStorePath: \/data\/room-store.db/' $mnt/config.yaml > $f; mv $f $mnt/config.yaml")
         post+=("sed 's/  filename:.*$/  filename: \/data\/discord.db/' $mnt/config.yaml > $f; mv $f $mnt/config.yaml")
         post+=("npm install")
         post+=("npm run build")
         post+=("node build/src/discordas.js -r -u 'http:\\/\\/$DOMAIN:$DISC_PORT' -c $mnt/config.yaml")
         post+=("cp discord-registration.yaml ${mnt%$basename*}/docker-matrix/")
         post+=("cp discord-registration.yaml $mnt/discord-registration.yaml")
      ;;
      * )
         return
      ;;
   esac
   mkdir -p "$mnt"
   for i in "${pre[@]:-}"; do
      eval "$i"
   done
   docker build -t $img .
   for i in "${post[@]}"; do
      eval "$i"
   done
   rm -f "$f" "$g"
   echo "docker run --name $basename --rm -d -v $mnt:/data --network riot-matrix-net --net-alias $basename $run"
}

function run_modules() {
   local run_cmds=("${@:-}")
   for cmd in "${run_cmds[@]}"; do
      echo RUN $(basename "$cmd")
      echo $cmd
   done
}

if [ "$0" == "${BASH_SOURCE[0]}" ]; then
   main "$@"
fi