#!/bin/sh
set -e

###############################################################################
# JAMI PACKAGE POSTINST                                                       #
#                                                                             #
# Install Jami's package repository to the trusted sources and add Jami's     #
# release key to trusted keyring.                                             #
#                                                                             #
# NOTE: We follow https://wiki.debian.org/DebianRepository/UseThirdParty      #
###############################################################################


###############################################################################
# [1] Configuration                                                           #
###############################################################################

# All package repo urls are expected to start with this string, regardless
# of the distribution or version. The end tag is automatically appended,
# depending on the system the postinst script is run on. Examples:
#
# Ubuntu 22.04:
# $JAMI_REPO = $JAMI_REPO_BASE/ubuntu_22.04/
#
# Debian 11:
# $JAMI_REPO = $JAMI_REPO_BASE/debian_11
#
# To update the appended end tags, modify the switch in [2].
JAMI_REPO_BASE="https://dl.jami.net/nightly"

# Jami release key.
JAMI_KEY_FINGERPRINT="A295D773307D25A33AE72F2F64CD5FA175348F84"
JAMI_KEY="\
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v2
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=s2aQ
-----END PGP PUBLIC KEY BLOCK-----"

# System paths and generated variables
APT_FILE="/etc/apt/sources.list.d/jami-main.list"
UPDATE_MANAGER_PATH="/etc/update-manager/release-upgrades.d/"
JAMI_UPDATE_MANAGER_ID="jami-main"

JAMI_UPDATE_MANAGER_CFG="${JAMI_UPDATE_MANAGER_ID}.cfg"
UPDATE_MANAGER_CFG_PATH="${UPDATE_MANAGER_PATH}/${JAMI_UPDATE_MANAGER_CFG}"


###############################################################################
# [2] Set package repo url depending on distribution and version              #
###############################################################################

CAN_ADD_DEB_SOURCE=true

# Detect currently running system using /etc/os-release
# Debian-based systems are supposed to provide /etc/os-release so if it's not
# the case then we simply don't want to provide automatic updates
if [ -f /etc/os-release ]; then
    . /etc/os-release

    # Set-up Jami repository end tag
    if [ "${VERSION_CODENAME}" = "bullseye" ] || [ "${ID}_${VERSION_ID}" = "debian_11" ]; then
        ENDTAG="debian_11"
    elif [ "${UBUNTU_CODENAME}" = "focal" ] || [ "${ID}_${VERSION_ID}" = "ubuntu_20.04" ]; then
        ENDTAG="ubuntu_20.04"
    elif [ "${UBUNTU_CODENAME}" = "jammy" ] || [ "${ID}_${VERSION_ID}" = "ubuntu_22.04" ]; then
        ENDTAG="ubuntu_22.04"
    elif [ "${UBUNTU_CODENAME}" = "kinetic" ] || [ "${ID}_${VERSION_ID}" = "ubuntu_22.10" ]; then
        ENDTAG="ubuntu_22.10"
    elif [ "${UBUNTU_CODENAME}" = "lunar" ] || [ "${ID}_${VERSION_ID}" = "ubuntu_23.04" ]; then
        ENDTAG="ubuntu_23.04"
    elif [ "${ID}" = "debian" ] && \
             [ "$(command -v lsb_release)" ] && \
             [ "$(lsb_release -rs)" = "testing" ]; then
        ENDTAG="debian_testing"
    elif [ "${ID}" = "debian" ] && \
             [ "$(command -v apt-cache)" ] && \
             [ "$(command -v grep)" ] && \
             apt-cache policy | grep -q "a=unstable" -; then
        ENDTAG="debian_unstable"
    else
        # Distribution is not supported. Don't provide automatic updates.
        CAN_ADD_DEB_SOURCE=false
    fi
else
    CAN_ADD_DEB_SOURCE=false
fi


###############################################################################
# [3] Maintainer script main switch                                           #
###############################################################################

case "$1" in
    configure)
        if [ "`command -v apt-key`" = "" ]; then
            # we can only add key if apt-key is present
            CAN_ADD_DEB_SOURCE=false
        fi

        if [ "${CAN_ADD_DEB_SOURCE}" = "true" ]; then
            JAMI_REPO="${JAMI_REPO_BASE}/${ENDTAG}"

            # We first add the key to the trusted keyring.
            apt-key add - > /dev/null 2>&1 << EOF
$JAMI_KEY
EOF

            # Add an entry for the package repository to the trusted package
            # sources (DEB822 format)
            cat > $APT_FILE <<EOF
deb ${JAMI_REPO} jami main
EOF

            # Additionally, if update manager is installed we inform it about
            # the repository so it doesn't get scrapped after system updates
            if [ -d /etc/update-manager ]
            then
                mkdir -p $UPDATE_MANAGER_PATH
                cat > $UPDATE_MANAGER_CFG_PATH <<EOF
# Added by Jami to prevent disabling of Jami repository sources on
# distribution release upgrade.
[ThirdPartyMirrors]
jami/${JAMI_UPDATE_MANAGER_ID}=${JAMI_REPO}
EOF
            fi
        fi
        ;;
esac

# exit with a zero status as everything went well, important for maintscripts
exit 0
