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#!/bin/bash
# Copyright (C) 2017  Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


set -eu


get()
{
    set -eu
    python3 -c '
import yaml, sys
filename, varname = sys.argv[1:]
config = yaml.safe_load(open(filename))
print(config.get(varname, ""))
' "$@"
}


run_bottle()
{
    set -eu
    local port="$(get "$config" gunicorn-port)"
    export QVISQVE_CONFIG="$1"
    python3 -c "import qvisqve; qvisqve.create_app().run(host='127.0.0.1', port=$port)"
}



run_gunicorn()
{
    set -eu
    local config="$1"
    local gunicorn="$(get "$config" gunicorn)"
    local log_file="$(get "$config" gunicorn-log)"
    local pid_file="$(get "$config" gunicorn-pid-file)"
    local port="$(get "$config" gunicorn-port)"

    if [ "${pid_file:=no}" = no ]
    then
        pid_opt=""
    else
        pid_opt="-p $pid_file"
    fi

    opts="
        --bind 127.0.0.1:$port \
        -w1 \
        --log-file $log_file \
        $pid_opt \
        --log-level debug \
        --limit-request-field_size=0 \
    "

    if [ "$gunicorn" = background ]
    then
        opts="$opts --daemon"
    fi

    export QVISQVE_CONFIG="$config"
    gunicorn3 $opts qvisqve.backend:app
}


config="$1"
gunicorn="$(get "$config" gunicorn)"
case "$gunicorn" in
    no|False)
        run_bottle "$config"
        ;;
    yes|True|background)
        run_gunicorn "$config"
        ;;
esac