#!/bin/sh

#Parameters
#$1 - public ip address of a server
#$2 - domain
#Example: ./turbocloud.sh -i 12.32.22.43 -d myproject.com -t static
public_ip=""
domain=""
project_type=""
project_port="80" #not used for static websites
project_folder=${PWD}
server_project_folder="/root/$(cat /proc/sys/kernel/random/uuid)"
image_name=""

while getopts i:d:t:p: option
do 
    case "${option}"
        in
        i)public_ip=${OPTARG};;
        d)domain=${OPTARG};;
        t)project_type=${OPTARG};;
        p)project_port=${OPTARG};;
    esac
done

image_name="$domain"

scp -r $project_folder root@$public_ip:$server_project_folder

ssh root@$public_ip domain=$domain project_type=$project_type image_name=$image_name project_port=$project_port server_project_folder=$server_project_folder 'bash -s' <<'ENDSSH'

    ############################################
    ## Key-value storage
    ##
    ## Usage:
    ## kvset user mr.bob
    ## kvset pass abc@123
    ## kvget user
    ## kvdel pass
    ## kvclear
    ## kvlist

    default_kv_user_dir="$HOME/.kv-bash"

    # Usage: kvget <key>
    kvget() {
        key="$1"
        kv_user_dir=${KV_USER_DIR:-$default_kv_user_dir}
        VALUE="$([ -f "$kv_user_dir/$key" ] && cat "$kv_user_dir/$key")"
        echo "$VALUE"
        
        [ "$VALUE" != "" ]
    }

    # Usage: kvset <key> [value] 
    kvset() {
        key="$1"
        value="$2"
        kv_user_dir=${KV_USER_DIR:-$default_kv_user_dir}
        test -d "$kv_user_dir" || mkdir "$kv_user_dir"
        echo "$value" > "$kv_user_dir/$key"
    }

    # Usage: kvdel <key>
    kvdel() {
        key="$1"
        kv_user_dir=${KV_USER_DIR:-$default_kv_user_dir}
        test -f "$kv_user_dir/$key" && rm -f "$kv_user_dir/$key"
    }

    # list all key/value pairs to stdout
    # Usage: kvlist
    kvlist() {
        kv_user_dir=${KV_USER_DIR:-$default_kv_user_dir}
        for i in "$kv_user_dir/"*; do
            if [ -f "$i" ]; then
                key="$(basename "$i")"
                echo "$key" "$(kvget "$key")"
            fi
        done 
    }

    # clear all key/value pairs in database
    # Usage: kvclear
    kvclear() {
    kv_user_dir=${KV_USER_DIR:-$default_kv_user_dir}
        rm -rf "$kv_user_dir"
    }
    ##Key-value storage end
    #####################################


    while
        available_port=$(shuf -n 1 -i 4000-7999)
        netstat -atun | grep -q "$available_port"
    do
    continue
    done

    echo "Free port found: $available_port"

    if ! [ -x "$(command -v caddy)" ]; then
        sudo apt install -y debian-keyring debian-archive-keyring apt-transport-https curl
        curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' | sudo gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg
        curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' | sudo tee /etc/apt/sources.list.d/caddy-stable.list
        sudo apt update
        sudo apt install caddy
    fi

    if ! [ -x "$(command -v docker)" ]; then

        sudo apt-get update
        sudo apt-get install ca-certificates curl
        sudo install -m 0755 -d /etc/apt/keyrings
        sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
        sudo chmod a+r /etc/apt/keyrings/docker.asc

        echo \
        "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
        $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
        sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
        sudo apt-get update

        sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
    fi
    
    #If the project type is static, we generate Dockerfile
    if [[ "$project_type" == "static" ]]; then
        sudo echo -e "FROM joseluisq/static-web-server:2-alpine\nCOPY ./ public/" >> $server_project_folder/Dockerfile
    fi    

    prev_container_id=$(docker ps -q --filter ancestor=$image_name )

    sudo docker build $server_project_folder -t $image_name
    sudo docker container rm $prev_container_id --force

    sudo docker run -it -d --restart unless-stopped -p $available_port:$project_port $image_name

    rm /etc/caddy/Caddyfile
    sudo echo -e "$domain {\nreverse_proxy * localhost:$available_port\n}" >> /etc/caddy/Caddyfile
    caddy reload -c /etc/caddy/Caddyfile

    rm -rf $server_project_folder
ENDSSH