#!/bin/bash

set -e
set -x

flags=""

print_help() {
    echo "
Pleroma Maintenance Script

Usage:
    $0 [action]

Actions:
    build          Rebuild the pleroma container

    purge          Remove the pleroma container and all build caches

    start / up     Start pleroma and sibling services

    stop / down    Stop pleroma and sibling services

    restart        Executes #stop and #start respectively.

    status / ps    Show the current container status

    logs           Show the current container logs

    enter          Enter the pleroma container for debugging/maintenance
"
}

render_template() {
    m4 $flags docker-compose.m4 | awk 'NF'
}

docker_compose() {
    render_template | docker-compose -f - "$@"
}

load_env() {
    if [[ ! -f .env ]]; then
        echo "Please create a .env file first"
        echo "(Copy .env.dist to .env for a template)"
        exit 1
    fi

    while read -r line; do
        if [[ "$line" == \#* ]] || [[ -z "$line" ]]; then
            continue;
        fi

        export "${line?}"
        flags="-D__${line?} $flags"
    done < .env
}

action__start()   { docker_compose up --remove-orphans -d; }
action__up()      { action__start; }
action__stop()    { docker_compose down; }
action__down()    { action__stop; }
action__restart() { action__stop; action__start; }
action__logs()    { docker_compose logs -f; }
action__build()   { docker_compose build --build-arg __BUST_CACHE="$(date +%s)" server; }
action__enter()   { docker_compose exec server ash; }
action__status()  { docker_compose ps; }
action__ps()      { action__status; }
action__debug()   { render_template; }
action__lint()    { render_template | jq; }

if [[ -z "$1" ]]; then
    print_help
    exit 1
fi

load_env

actions=(build update purge start up stop down restart logs enter status ps debug lint)
if [[ ${actions[*]} =~ ${1} ]]; then
    "action__${1}"
else
    print_help
    exit 1
fi