#!/bin/bash
set -e

systemctl stop mirrors
systemctl restart docker
systemctl stop nginx 2>/dev/null || true

docker stop $(docker ps -aq) > /dev/null || true
pkill mysqld || true
pkill php-fpm7 || true
pkill nginx || true
sleep 5
pidof mysqld && echo "Can't kill mysqld process, kill it by hands and restart script!" && exit 1
pidof php-fpm7 && echo "Can't kill php-fpm7 process, kill it by hands and restart script!" && exit 1
pidof nginx && echo "Can't kill nginx process, kill it by hands and restart script!" && exit 1

docker rm -f "clone-wp-db" > /dev/null 2>&1 || true
insp=( $(docker inspect wp-db -f '{{.Image}} {{(index .Mounts 0).Name}}') )
db_image=${insp[0]}
db_volume=${insp[1]}
printf "\n---\nClone db container: wb-db\n"
docker create \
    --name "clone-wp-db" \
    --label "wp-role=db" \
    --volume "$db_volume:/var/lib/mysql" \
    "$db_image"

cids=$(docker ps -a --filter 'name=^/wp-domain-[0-9]+$' --format '{{.Names}}')
for cid in $cids; do
    printf "\n---\nClone domain container: $cid\n"
    insp=( $(docker inspect $cid -f '{{index .Config.Labels "wp-domain-id"}} {{index .Config.Labels "wp-domain-name"}} {{.Image}} {{(index .Mounts 0).Name}}') )
    domain_id=${insp[0]}
    domain_name=${insp[1]}
    image=${insp[2]}
    volume=${insp[3]}
    nw_name="wp-nw-domain-$domain_id"
    ct_name="clone-wp-domain-$domain_id"
    echo "Domain_name: $domain_name"

    if ! docker network inspect "$nw_name" > /dev/null 2>&1; then
        echo "Create network $nw_name"
        docker network create \
            --label "wp-role=domain-db-bridge" \
            --label "wp-domain-id=$domain_id" \
            --label "wp-domain-name=$domain_name" \
            "$nw_name"
    fi

    echo "Connect network $nw_name to db container"
    docker network connect --alias "db" "$nw_name" "clone-wp-db"

    echo "Create domain cointainer: $ct_name"
    docker rm -f "$ct_name" > /dev/null 2>&1 || true
    docker create \
        --name "$ct_name" \
        -P \
        --network "$nw_name" \
        --volume "$volume:/var/www/html" \
        --label "wp-role=wp" \
        --label "wp-domain-id=$domain_id" \
        --label "wp-domain-name=$domain_name" \
        "$image"
done

printf "\n---\nReplace db container: clone-wp-db -> wb-db\n"
docker rm -f "wp-db"
docker rename "clone-wp-db" "wp-db"
docker start "wp-db"
sleep 2

for cid in $cids; do
    ct_name="clone-$cid"
    printf "\n---\nReplace domain container: $ct_name -> $cid\n"
    docker rm -f "$cid"
    docker rename "$ct_name" "$cid"
    docker start "$cid"
done

systemctl start mirrors
if [ -f /etc/nginx/metrics.htpasswd ]; then
    systemctl start nginx
else
   true  # do nothing
fi