#!/bin/sh
set -e

. /usr/share/debconf/confmodule

file="$1"

log() {
	logger -t apt-setup "$@"
}
warning() {
	log "warning: $@"
}

# Ask if a mirror should be used if the base system can be installed from CD
if [ -e /cdrom/.disk/base_installable ] || [ "$OVERRIDE_BASE_INSTALLABLE" ]; then
	if ! search-path choose-mirror; then
		warning "choose-mirror is not available; cannot offer network mirror"
		exit 1
	fi

	# Default to false if no network selected in netcfg
	if db_get netcfg/dhcp_options && \
	   [ "$RET" = "Do not configure the network at this time" ]; then
		use_mirror=false
	fi

	# Set default if no value (see Debian mirror generator)
	db_get apt-setup/use_mirror
	[ "$RET" ] || db_set apt-setup/use_mirror true

	# Text is variable for Debian
	db_metaget apt-mirror/use/netinst_old description
	db_subst apt-setup/use_mirror EXPLANATION "$RET"

	db_input medium apt-setup/use_mirror || [ $? -eq 30 ]
	db_go # or exit 10

	db_get apt-setup/use_mirror
	if [ "$RET" = false ]; then
		exit 1
	fi

	if db_get cdrom/codename && [ "$RET" ]; then
		db_set mirror/codename $RET
	fi
	if db_get cdrom/suite && [ "$RET" ]; then
		db_set mirror/suite $RET
	fi
	choose-mirror -n # no progress bar
fi

db_input low apt-setup/backports || true

dists="main"

db_get mirror/protocol
protocol="$RET"
db_get mirror/codename
codename="$RET"
db_get mirror/$protocol/hostname
hostname="$RET"
db_get mirror/$protocol/directory
directory="/${RET#/}"

if [ "$protocol" = http ]; then
	db_get mirror/$protocol/proxy
	proxy="$RET"
	if [ -n "$proxy" ]; then
		if ! grep -iq "Acquire::$protocol::Proxy" $ROOT/etc/apt/apt.conf.new; then
			echo "Acquire::$protocol::Proxy \"$proxy\";" >> $ROOT/etc/apt/apt.conf.new
		fi
	fi
fi

# Trisquel: Deb822-first, keep legacy clean
: "${ROOT:=/target}"
SD="$ROOT/etc/apt/sources.list.d"
SF="$SD/trisquel.sources"
LEGACY="$ROOT/etc/apt/sources.list"
MSG="# Trisquel sources have moved to /etc/apt/sources.list.d/trisquel.sources"
mkdir -p "$SD"

# Use keyring in /usr/share/keyrings
SIGNED_BY="/usr/share/keyrings/trisquel-archive-keyring.gpg"

# Canonical URI for Deb822 (trailing slash)
uri="$protocol://$hostname$directory"
case "$uri" in */) : ;; *) uri="$uri/";; esac

# Write Deb822 sources file in the requested structure
cat << EOF > "$SF"
# Trisquel repositories for supported software and updates
Types: deb
URIs: ${uri}
Suites: ${codename} ${codename}-updates ${codename}-security
Components: main
Signed-By: ${SIGNED_BY}

# Source package repositories
Types: deb-src
URIs: ${uri}
Suites: ${codename} ${codename}-updates ${codename}-security
Components: main
Signed-By: ${SIGNED_BY}

# Optional backports repository
Enabled: no
Types: deb deb-src
URIs: ${uri}
Suites: ${codename}-backports
Components: main
Signed-By: ${SIGNED_BY}
EOF

{
    echo "deb ${uri} ${codename} main"
    echo "deb ${uri} ${codename}-updates main"
    echo "deb ${uri} ${codename}-security main"
} >> "$file"

# Keep the legacy file and the pipeline temp file as a single breadcrumb line
printf '%s\n' "$MSG" > "$LEGACY"
printf '%s\n' "$MSG" >> "$file"

exit 0