#!/bin/bash -xe
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# AUTHORS
# Maciek Borzecki <maciek.borzecki (at] gmail.com>

# Travis build script. The script reexecs itself inside the container (setting
# IN_CONTAINER=1). The proceeds to install build dependencies and runs through
# the whole build process. Source tree is bind-mounted at /mnt and the container
# has its workdir set to /mnt
#
# NOTE: it is assumed that the script is run while at the top of source tree
# (i.e. $PWD is your checked out tree, this crucial for properly mounting the
# source code into the container).

deps_fedora() {
    dnf install --best -y --refresh \
        meson \
        pkgconfig \
        gcc \
        vala \
        gobject-introspection-devel \
        json-glib-devel \
        libgee-devel \
        gnutls-devel \
        libnotify-devel \
        at-spi2-core-devel \
        gtk3-devel \
        glib-networking \
        tree \
        uncrustify \
        diffutils
}

deps_opensuse() {
    zypper install -y \
           make \
           meson \
           pkgconfig \
           gcc \
           vala \
           gobject-introspection-devel \
           json-glib-devel \
           libgee-devel \
           gnutls-devel \
           libnotify-devel \
           at-spi2-core-devel \
           gtk3-devel \
           glib-networking \
           tree \
           uncrustify
}

deps_archlinux() {
    pacman -Syu --noconfirm \
           base-devel \
           meson \
           pkg-config \
           gcc \
           vala \
           glib2 \
           gobject-introspection \
           json-glib \
           libgee \
           libnotify \
           at-spi2-core \
           gtk3 \
           gnutls \
           glib-networking \
           tree \
           uncrustify
}

deps_ubuntu() {
    apt-get update && \
        apt-get install -y \
                meson \
                pkg-config \
                valac \
                libgirepository1.0-dev \
                libjson-glib-dev \
                libgee-0.8-dev \
                libgnutls28-dev \
                libnotify-dev \
                libgtk-3-dev \
                glib-networking \
                tree \
                uncrustify
}

install_deps() {
    case "$1" in
        fedora)
            deps_fedora
            ;;
        opensuse)
            deps_opensuse
            ;;
        archlinux)
            deps_archlinux
            ;;
        ubuntu-bionic)
            deps_ubuntu
            ;;
        *)
            echo "unsupported distro $1"
            exit 1
    esac
}

build() {
    set -ex
    ./extra/fmt check || {
        echo "WARNING: code formatting check failed"
        [ -z "${SUPPRESS_FMT}" ] && false
    }

    mkdir -p build && \
        cd build && \
        meson .. && \
        ninja && \
        ninja test \
            || false

    DESTDIR=$PWD/install-dir ninja install
    (cd install-dir; LC_ALL=C tree -pan . > ../current-tree)
    diff -up ../extra/install-tree current-tree
}

build_in_container() {
    install_deps "$1"

    # distro specific quirks
    case "$1" in
        ubuntu-*|opensuse|fedora)
            echo "$1 is using an outdated version of uncrustify, suppress formatting errors"
            export SUPPRESS_FMT=1
            ;;
    esac

    build
}

spin_container() {
    case "$1" in
        fedora)
            DOCKER_IMG=fedora
            ;;
        archlinux)
            DOCKER_IMG=archlinux
            ;;
        opensuse)
            DOCKER_IMG=opensuse/tumbleweed
            ;;
        ubuntu-bionic)
            DOCKER_IMG=ubuntu:bionic
            ;;
        *)
            echo "unsupported distro $1"
            exit 1
    esac

    engine="docker"
    if ! command -v "$engine" 2>/dev/null ; then
        engine="podman"
    fi
    # run a container, mount sources at /mnt, st
    "$engine" run --rm \
           -v "$PWD":/mnt \
           -w /mnt \
           -e IN_CONTAINER=1 \
           "$DOCKER_IMG" \
           /mnt/extra/travis-build "$@"
}

if [ -z "$NO_BUILD" ]; then
    if [ "$IN_CONTAINER" = "1" ]; then
        build_in_container "$@"
    else
        spin_container "$@"
    fi
fi