#!/bin/sh

# PROVIDE: caddy
# REQUIRE: LOGIN DAEMON NETWORKING
# KEYWORD: shutdown

# To enable caddy, add 'caddy_enable="YES"' to /etc/rc.conf or
# /etc/rc.conf.local

# Optional settings:
# caddy_command (string):     Full path to the caddy binary
# caddy_config (string):      Full path to caddy config file
#                             (/usr/local/etc/caddy/Caddyfile)
# caddy_adapter (string):     Config adapter type (caddyfile)
# caddy_directory (string):   Root for caddy storage (ACME certs, etc.)
#                             (/var/db/caddy)
# caddy_extra_flags (string): Extra flags passed to caddy start
# caddy_logdir (string):      Where caddy logs are stored
#                             (/var/log/caddy)
# caddy_logfile (string):     Location of process log (${caddy_logdir}/caddy.log)
#                             This is for startup/shutdown/error messages.
#                             To create an access log, see:
#                             https://caddyserver.com/docs/caddyfile/directives/log
# caddy_user (user):          User to run caddy (root)
# caddy_group (group):        Group to run caddy (wheel)
#
# This script will honor XDG_CONFIG_HOME/XDG_DATA_HOME. Caddy will create a
# .../caddy subdir in each of those. By default, they are subdirs of /var/db/caddy.
# See https://caddyserver.com/docs/conventions#data-directory

. /etc/rc.subr

name=caddy
rcvar=caddy_enable
desc="Powerful, enterprise-ready, open source web server with automatic HTTPS written in Go"

load_rc_config $name

# Defaults
: ${caddy_enable:=NO}
: ${caddy_adapter:=caddyfile}
: ${caddy_config:="/usr/local/etc/caddy/Caddyfile"}
: ${caddy_command:="/usr/local/bin/${name}"}
: ${caddy_directory:=/var/db/caddy}
: ${caddy_extra_flags:=""}
: ${caddy_logdir:="/var/log/${name}"}
: ${caddy_logfile:="${caddy_logdir}/${name}.log"}
: ${caddy_user:="root"}
: ${caddy_group:="wheel"}

# Config and base directories
: ${XDG_CONFIG_HOME:="${caddy_directory}/config"}
: ${XDG_DATA_HOME:="${caddy_directory}/data"}
export XDG_CONFIG_HOME XDG_DATA_HOME

command="${caddy_command}"
caddy_flags="--config ${caddy_config} --adapter ${caddy_adapter}"
pidfile="/var/run/${name}/${name}.pid"

required_files="${caddy_config} ${caddy_command}"

start_precmd="caddy_precmd"
start_cmd="caddy_start"
stop_precmd="caddy_prestop"

# Extra Commands
extra_commands="configtest reload"
configtest_cmd="caddy_execute validate ${caddy_flags}"
reload_cmd="caddy_execute reload ${caddy_flags}"

caddy_execute()
{
    /usr/bin/su -m "${caddy_user}" -c "${caddy_command} $*"
}

caddy_precmd()
{
    # Create required directories and set permissions
    /usr/bin/install -d -m 755 -o "${caddy_user}" -g "${caddy_group}" ${caddy_directory}
    /usr/bin/install -d -m 700 -o "${caddy_user}" -g "${caddy_group}" ${caddy_directory}/config
    /usr/bin/install -d -m 700 -o "${caddy_user}" -g "${caddy_group}" ${caddy_directory}/data
    /usr/bin/install -d -m 755 -o "${caddy_user}" -g "${caddy_group}" ${caddy_logdir}
    /usr/bin/install -d -m 700 -o "${caddy_user}" -g "${caddy_group}" /var/run/caddy
    if [ -e ${caddy_logfile} ]; then
        /bin/chmod 644 ${caddy_logfile}
        /usr/sbin/chown root:wheel ${caddy_logfile}
    else
        /usr/bin/install -m 644 -o root -g wheel /dev/null ${caddy_logfile}
    fi
}

caddy_start()
{
    echo -n "Starting caddy... "
    /usr/bin/su -m ${caddy_user} -c "${caddy_command} start ${caddy_flags} \
        ${caddy_extra_flags} --pidfile ${pidfile}" >> ${caddy_logfile} 2>&1
    if [ $? -eq 0 ] && ps -ax -o pid | grep -q "$(cat ${pidfile})"; then
        echo "done"
        echo "Log: ${caddy_logfile}"
    else
        echo "Error: Caddy failed to start"
        echo "Check the caddy log: ${caddy_logfile}"
    fi
}

caddy_prestop()
{
    local result

    echo -n "Stopping caddy... "

    result="$(caddy_execute stop 2>&1)"
    if [ ${?} -eq 0 ]; then
        echo "done"
        exit 0
    else
        if echo "${result}" | grep -q "connection refused"; then
            echo "admin interface unavailable; using pidfile"
            return 0
        else
            echo "Error: Unable to stop caddy"
            echo "Check the caddy log: ${caddy_logfile}"
            return 1
        fi
    fi
}

run_rc_command "$1"