#!/bin/bash
set -euo pipefail

ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$ROOT"

if [[ $# -ne 1 ]]; then
    echo "Usage: $0 VERSION"
    exit 1
fi

VERSION="$1"

if [[ ! "$VERSION" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
    echo "Invalid version: $VERSION"
    echo "Expected MAJOR.MINOR.PATCH, for example 0.1.6"
    exit 1
fi

STAGE="$ROOT/packaging/root"
OUTPUT="$ROOT/dist/ekklesia-classroom_${VERSION}_amd64.deb"

echo "Building Ekklesia Classroom ${VERSION}"

# Always construct the package from clean canonical sources.
rm -rf "$STAGE"
mkdir -p "$STAGE/DEBIAN" "$ROOT/dist"

# Debian package metadata.
sed \
    "s/^Version: @VERSION@$/Version: ${VERSION}/" \
    "$ROOT/packaging/debian/control.template" \
    > "$STAGE/DEBIAN/control"

install -m755 \
    "$ROOT/packaging/debian/postinst" \
    "$STAGE/DEBIAN/postinst"

# Classroom UI configuration.
install -Dm644 \
    "$ROOT/config/sway/config" \
    "$STAGE/etc/ekklesia-classroom/sway/config"

install -Dm644 \
    "$ROOT/config/waybar/config.jsonc" \
    "$STAGE/etc/ekklesia-classroom/waybar/config.jsonc"

install -Dm644 \
    "$ROOT/config/waybar/style.css" \
    "$STAGE/etc/ekklesia-classroom/waybar/style.css"

# Classroom commands.
install -Dm755 \
    "$ROOT/scripts/classroom-browser" \
    "$STAGE/usr/local/bin/classroom-browser"

install -Dm644 \
    "$ROOT/config/wallpapers/classroom-default.png" \
    "$STAGE/usr/share/backgrounds/ekklesia/classroom-default.png"

install -Dm755 \
    "$ROOT/scripts/classroom-dock" \
    "$STAGE/usr/local/bin/classroom-dock"

install -Dm644 \
    "$ROOT/config/dock/style.css" \
    "$STAGE/etc/ekklesia-classroom/dock/style.css"

install -Dm755 \
    "$ROOT/scripts/ekklesia-classroom-update" \
    "$STAGE/usr/local/bin/ekklesia-classroom-update"

# System configuration.
install -Dm644 \
    "$ROOT/systemd/autologin/autologin.conf" \
    "$STAGE/etc/systemd/system/getty@tty1.service.d/autologin.conf"

install -Dm644 \
    "$ROOT/systemd/updater/ekklesia-classroom-update.service" \
    "$STAGE/etc/systemd/system/ekklesia-classroom-update.service"

install -Dm644 \
    "$ROOT/systemd/updater/ekklesia-classroom-update.timer" \
    "$STAGE/etc/systemd/system/ekklesia-classroom-update.timer"

install -Dm644 \
    "$ROOT/config/icons/dvd.svg" \
    "$STAGE/etc/ekklesia-classroom/icons/dvd.svg"

install -Dm644 \
    "$ROOT/config/icons/live.svg" \
    "$STAGE/etc/ekklesia-classroom/icons/live.svg"

install -Dm644 \
    "$ROOT/config/icons/live-off.svg" \
    "$STAGE/etc/ekklesia-classroom/icons/live-off.svg"

install -Dm644 \
    "$ROOT/config/icons/browser.svg" \
    "$STAGE/etc/ekklesia-classroom/icons/browser.svg"

printf '%s\n' "$VERSION" > "$ROOT/VERSION"

dpkg-deb \
    --root-owner-group \
    --build "$STAGE" "$OUTPUT"

echo
echo "Built:"
echo "$OUTPUT"
sha256sum "$OUTPUT"