#!/bin/bash

# Dependencies:
#
# - functions

# stack.sh
# ---------
# - check_crio
# - install_crio
# - configure_crio
# - stop_crio

# Save trace setting
_XTRACE_DOCKER=$(set +o | grep xtrace)
set +o xtrace


# Defaults
# --------

CRIO_ENGINE_SOCKET_FILE=${CRIO_ENGINE_SOCKET_FILE:-/var/run/crio/crio.sock}

# Functions
# ---------

function check_crio {
    if is_ubuntu; then
        dpkg -l | grep crio-o > /dev/null 2>&1
    else
        false
        # TODO: CentOS/Fedora support.
    fi
}

function install_crio {
    if [[ -z "$os_PACKAGE" ]]; then
        GetOSVersion
    fi

    local lsb_dist=${os_VENDOR,,}
    local dist_version=${os_CODENAME}
    local kubic_obs_project_key="2472d6d0d2f66af87aba8da34d64390375060aa4"
    local os="x${os_VENDOR}_${os_RELEASE}"
    if is_ubuntu; then
        apt_get install apt-transport-https ca-certificates \
            software-properties-common
        sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 \
            --recv ${kubic_obs_project_key}
        sudo apt-add-repository "deb https://download.opensuse.org/"`
            `"repositories/devel:/kubic:/libcontainers:/stable/${os}/ /"
        sudo apt-add-repository "deb http://download.opensuse.org/"`
            `"repositories/devel:/kubic:/libcontainers:/stable:/cri-o:/"`
            `"${CRIO_VERSION}/${os}/ /"

        # Installing podman and containerd will get us compatible versions of
        # cri-o and runc. And we need podman to manage container images anyway.
        apt_get install podman buildah cri-o-runc cri-o
    elif is_fedora; then
        if [[ "$lsb_dist" = "centos" ]]; then
            sudo yum-config-manager \
                --add-repo \
                https://cbs.centos.org/repos/virt7-container-common-candidate/x86_64/os/
            sudo yum-config-manager \
                --add-repo \
                https://cbs.centos.org/repos/paas7-crio-311-candidate/x86_64/os/
        fi
        yum_install cri-o podman buildah
    fi
}

function configure_crio {
    # After an ./unstack it will be stopped. So it is ok if it returns exit-code == 1
    sudo systemctl stop crio.service || true

    local crio_conf
    crio_conf=/etc/crio/crio.conf

    # We're wrapping values in \"<val>\" because that's the format cri-o wants.
    iniset -sudo ${crio_conf} crio.api listen \"${CRIO_ENGINE_SOCKET_FILE}\"
    if [[ "$ENABLE_DEBUG_LOG_LEVEL" == "True" ]]; then
        # debug is way too verbose, info will be enough
        iniset -sudo ${crio_conf} crio.runtime log_level \"info\"
    fi
    if is_ubuntu; then
        # At least for 18.04 we need to set up /etc/containers/registries.conf
        # with some initial content. That's another bug with that PPA.
        local registries_conf
        registries_conf="/etc/containers/registries.conf"
        if [[ ! -f ${registries_conf} ]]; then
            sudo mkdir -p `dirname ${registries_conf}`
            cat << EOF | sudo tee ${registries_conf}
[registries.search]
registries = ['docker.io']
EOF
        fi
    elif is_fedora; then
        local lsb_dist=${os_VENDOR,,}

        if [[ "$lsb_dist" = "centos" ]]; then
            # CentOS packages are putting runc binary in different place...
            iniset -sudo ${crio_conf} crio.runtime runtime \"/usr/sbin/runc\"

            # CentOS version seems to only work with cgroupfs...
            iniset -sudo ${crio_conf} crio.runtime cgroup_manager \"cgroupfs\"
        fi
    fi

    sudo systemctl --no-block restart crio.service
}

function stop_crio {
    sudo systemctl stop crio.service || true
}

# Restore xtrace
$_XTRACE_DOCKER