#!/bin/bash

readonly UNWANTED_PACKAGES_STRING="nginx node python haxe"
readonly MANDATORY_PACKAGES_STRING="wget apache2 make git imagemagick gettext libapache2-mod-neko mariadb-client sendemail libio-socket-ssl-perl libnet-ssleay-perl"

### CHECK

function check() {
    PREFIX="recipe:cagettepei:check"
    check_unwanted_packages || return 21
    check_mandatory_packages || return 22
    check_apache_modules || return 23
    check_node8 || return 24
    check_python2 || return 25
    check_haxe3 || return 26
    check_cagettepei_batch || return 35
    check_cagettepei_timers || return 36
    echo "container <$CONTAINER> approved successfully!"
}

function check_apache_modules() {
    lxc exec "$CONTAINER" -- bash <<EOF
        set -Eeuo pipefail
        test -L /etc/apache2/mods-enabled/neko.load
        test -L /etc/apache2/mods-enabled/rewrite.load
        true
EOF
}

function check_cagettepei_batch() {
    lxc exec "$CONTAINER" -- bash <<EOF
        set -Eeuo pipefail
        test -f /var/www/cagettepei/cagettepei-batch
        true
EOF
}

function check_cagettepei_timers() {
    lxc exec "$CONTAINER" -- bash <<EOF
        set -Eeuo pipefail
        test -f /etc/systemd/system/cagettepei-batch-minute.service
        test -f /etc/systemd/system/cagettepei-batch-minute.timer
        test -f /etc/systemd/system/cagettepei-batch-day.service
        test -f /etc/systemd/system/cagettepei-batch-day.timer
        true
EOF
}

function check_node8() {
    lxc exec "$CONTAINER" -- bash <<EOF
        set -Eeuo pipefail
        node --version | grep -q 'v8.17.0'
EOF
}

function check_python2() {
    lxc exec "$CONTAINER" -- bash <<EOF
        set -Eeuo pipefail
        python --version 2>&1 | grep -q 'Python 2.7.18'
EOF
}

function check_haxe3() {
    lxc exec "$CONTAINER" -- bash <<EOF
        set -Eeuo pipefail
        haxe -version 2>&1 | grep -q '3.4.7'
EOF
}

function check_unwanted_packages() {
    lxc exec "$CONTAINER" -- bash <<EOF
        set -Eeuo pipefail
        mapfile -t PACKAGES <<< "$UNWANTED_PACKAGES_STRING"
        for package in \${PACKAGES[@]}; do
            ! (dpkg -l "\$package" 2>/dev/null | grep -q ^ii)
        done
        true # useful because for might return last inexistant package
EOF
}

function check_mandatory_packages() {
    lxc exec "$CONTAINER" -- bash <<EOF
        set -Eeuo pipefail
        mapfile -t PACKAGES <<< "$MANDATORY_PACKAGES_STRING"
        for package in \${PACKAGES[@]}; do
            dpkg-query -l "\$package" 2>/dev/null | grep -q ^ii
        done
EOF
}

### INSTALL

function install() {
    PREFIX="recipe:cagettepei:install"
    : $PREFIX

    launch_container "$CONTAINER"
    echo "initializing CagettePéi ... "

    echo -n "check unwanted packages..."
    check_unwanted_packages
    PREFIX="" echo "OK"

    lxc exec "$CONTAINER" -- bash <<EOF
        set -Eeuo pipefail

        echo installing CagettePéi...
        apt-get update
        apt-get install -y $MANDATORY_PACKAGES_STRING

        echo installing custom Node8...
        wget https://nodejs.org/download/release/v8.17.0/node-v8.17.0-linux-x64.tar.gz -O /tmp/node-v8.17.0-linux-x64.tar.gz
        tar -xzvf /tmp/node-v8.17.0-linux-x64.tar.gz -C /opt
        chown root:root -R /opt/node-v8.17.0-linux-x64
        ln -sf /opt/node-v8.17.0-linux-x64/bin/node /usr/local/bin/
        ln -sf /opt/node-v8.17.0-linux-x64/bin/npm /usr/local/bin/
        echo -n DONE

        echo installing custom Python2 with pypy...
        wget https://downloads.python.org/pypy/pypy2.7-v7.3.13-linux64.tar.bz2 -O /tmp/pypy2.7-v7.3.13-linux64.tar.bz2
        apt install -y bzip2
        bunzip2 -f /tmp/pypy2.7-v7.3.13-linux64.tar.bz2
        tar -xvf /tmp/pypy2.7-v7.3.13-linux64.tar -C /opt
        ln -sf /opt/pypy2.7-v7.3.13-linux64/bin/python /usr/local/bin/
        ln -sf /opt/pypy2.7-v7.3.13-linux64/bin/python2 /usr/local/bin/
        echo -n DONE

        echo installing custom Haxe3...
        wget https://github.com/HaxeFoundation/haxe/releases/download/3.4.7/haxe-3.4.7-linux64.tar.gz -O /tmp/haxe-3.4.7-linux64.tar.gz
        tar -xzvf /tmp/haxe-3.4.7-linux64.tar.gz -C /opt
        ln -sf /opt/haxe_20180221160843_bb7b827/haxe /usr/local/bin/
        ln -sf /opt/haxe_20180221160843_bb7b827/haxelib /usr/local/bin/
        echo -n DONE

        systemctl stop apache2
        rm -f /etc/apache2/sites-available/{000-default,default-ssl}.conf
        rm -f /etc/apache2/sites-enabled/000-default.conf
        rm -rf /var/www/html
        sed -i '/<Directory \/var\/www\/>/,/<\/Directory>/ s/AllowOverride None/AllowOverride All/' /etc/apache2/apache2.conf
        sed -i 's/^Listen 80$//' /etc/apache2/ports.conf

        echo "prepare folder for cagettepei instances"
        mkdir -p /var/www/cagettepei

        echo "enable neko and rewrite apache2 modules"
        a2enmod neko
        a2enmod rewrite
EOF

    echo -n "copy cagettepei-batch..."
    lxc file push --uid 0 --gid 0 "$MIAOU_BASEDIR/templates/apps/cagettepei/cagettepei-batch" "$CONTAINER/var/www/cagettepei/cagettepei-batch"
    lxc exec "$CONTAINER" -- chmod +x /var/www/cagettepei/cagettepei-batch
    PREFIX="" echo "OK"

    echo -n "copy cagettepei timers in systemd..."
    lxc file push --uid 0 --gid 0 "$MIAOU_BASEDIR/templates/apps/cagettepei/systemd/cagettepei-batch-minute.service" "$CONTAINER/etc/systemd/system/cagettepei-batch-minute.service"
    lxc file push --uid 0 --gid 0 "$MIAOU_BASEDIR/templates/apps/cagettepei/systemd/cagettepei-batch-minute.timer" "$CONTAINER/etc/systemd/system/cagettepei-batch-minute.timer"
    lxc file push --uid 0 --gid 0 "$MIAOU_BASEDIR/templates/apps/cagettepei/systemd/cagettepei-batch-day.service" "$CONTAINER/etc/systemd/system/cagettepei-batch-day.service"
    lxc file push --uid 0 --gid 0 "$MIAOU_BASEDIR/templates/apps/cagettepei/systemd/cagettepei-batch-day.timer" "$CONTAINER/etc/systemd/system/cagettepei-batch-day.timer"
    PREFIX="" echo "OK"

    echo -n "override apache2 service to launch cagettepei timers..."
    lxc exec "$CONTAINER" -- bash -c "SYSTEMD_EDITOR=tee systemctl edit apache2 <<EOT
[Unit]
BindsTo = cagettepei-batch-minute.timer cagettepei-batch-day.timer
EOT"
    PREFIX="" echo "OK"

    echo "enable and start cagettepei timers in systemd..."
    lxc exec "$CONTAINER" -- bash <<EOF
        systemctl enable cagettepei-batch-minute.timer cagettepei-batch-day.timer
        systemctl start cagettepei-batch-minute.timer cagettepei-batch-day.timer
EOF
    PREFIX="" echo "OK"
}

### MAIN

. "$MIAOU_BASEDIR/lib/init.sh"

arg1_required "$@"
readonly CONTAINER="$1"

check || (
    install
    check
)