#!/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"

# Syntax check everything the package ships, by shebang, so this cannot
# drift out of date as classroom commands are added.
echo "Validating sources"

for script in "$ROOT/packaging/debian/postinst" "$ROOT"/scripts/* "$ROOT"/tests/*; do
    [[ -f "$script" ]] || continue

    case "$(head -n 1 "$script")" in
        *python3*)
            python3 -m py_compile "$script"
            ;;
        *bash*|*bin/sh*)
            bash -n "$script"
            ;;
    esac
done

for module in "$ROOT"/lib/*.py; do
    [[ -f "$module" ]] || continue

    python3 -m py_compile "$module"
done

for policy in "$ROOT"/config/chrome/policies/*/*.json; do
    [[ -f "$policy" ]] || continue

    python3 -c 'import json, sys; json.load(open(sys.argv[1]))' "$policy"
done

find "$ROOT/scripts" "$ROOT/lib" \
    -name '__pycache__' -type d -prune -exec rm -rf {} + 2>/dev/null || true

for test in "$ROOT"/tests/test-*.sh; do
    [[ -x "$test" ]] || continue

    echo "Running $(basename "$test")"
    "$test" > /dev/null || {
        echo "Tests failed. Run it directly to see why:"
        echo "  $test"
        exit 1
    }
done

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



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

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

install -Dm755 \
    "$ROOT/scripts/classroom-dvd-css-setup" \
    "$STAGE/usr/local/bin/classroom-dvd-css-setup"



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


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

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

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

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

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

# Shared helpers imported by the classroom commands.
install -Dm644 \
    "$ROOT/lib/classroom_config.py" \
    "$STAGE/usr/local/lib/ekklesia-classroom/classroom_config.py"

install -Dm644 \
    "$ROOT/lib/classroom_chrome.py" \
    "$STAGE/usr/local/lib/ekklesia-classroom/classroom_chrome.py"


install -Dm644 \
    "$ROOT/lib/classroom_mqtt.py" \
    "$STAGE/usr/local/lib/ekklesia-classroom/classroom_mqtt.py"



install -Dm644 \
    "$ROOT/lib/classroom_vlc.py" \
    "$STAGE/usr/local/lib/ekklesia-classroom/classroom_vlc.py"


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




# Chrome enterprise policy: suppress first-run and sign-in nags, and pin
# Home to Wonder Ink. Nothing here restricts where teachers can browse.
install -Dm644 \
    "$ROOT/config/chrome/policies/managed/ekklesia-classroom.json" \
    "$STAGE/etc/opt/chrome/policies/managed/ekklesia-classroom.json"

install -Dm644 \
    "$ROOT/config/chrome/policies/recommended/ekklesia-classroom.json" \
    "$STAGE/etc/opt/chrome/policies/recommended/ekklesia-classroom.json"

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

# System configuration.
install -Dm644 \
    "$ROOT/config/sddm/ekklesia-classroom.conf" \
    "$STAGE/etc/sddm.conf.d/ekklesia-classroom.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 \
    "$ROOT/systemd/provision/ekklesia-classroom-provision.service" \
    "$STAGE/etc/systemd/system/ekklesia-classroom-provision.service"

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

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





# The classroom desktop.
#
# Not a shell, and not a daemon: a Plasma session described in files Plasma
# already reads. The panel, the window behaviour, the notifications, the
# lockdown and the palette are all in here, which is why there is no longer
# a dock, a window helper, a notification wrapper or a compositor config in
# the list above.

# Not /etc/xdg: plasma-workspace already owns files by these names there.
# The classroom's directory goes in front of it in XDG_CONFIG_DIRS instead.
for setting in kdeglobals kwinrc kwinrulesrc kscreenlockerrc ksmserverrc \
        krunnerrc plasmanotifyrc; do
    install -Dm644 \
        "$ROOT/config/plasma/xdg/${setting}" \
        "$STAGE/etc/ekklesia-classroom/xdg/${setting}"
done

install -Dm644 \
    "$ROOT/config/environment/90-ekklesia-classroom.conf" \
    "$STAGE/etc/environment.d/90-ekklesia-classroom.conf"

for scheme in EkklesiaDark EkklesiaLight; do
    install -Dm644 \
        "$ROOT/config/plasma/colors/${scheme}.colors" \
        "$STAGE/usr/share/color-schemes/${scheme}.colors"
done

LOOK="$STAGE/usr/share/plasma/look-and-feel/org.ekklesia.classroom.desktop"

install -Dm644 \
    "$ROOT/config/plasma/lookandfeel/metadata.json" \
    "$LOOK/metadata.json"

install -Dm644 \
    "$ROOT/config/plasma/lookandfeel/contents/defaults" \
    "$LOOK/contents/defaults"

install -Dm644 \
    "$ROOT/config/plasma/lookandfeel/contents/layouts/org.kde.plasma.desktop-layout.js" \
    "$LOOK/contents/layouts/org.kde.plasma.desktop-layout.js"

for entry in "$ROOT"/config/plasma/applications/*.desktop; do
    install -Dm644 "$entry" \
        "$STAGE/usr/share/applications/$(basename "$entry")"
done

# Shadows Chrome's own entry. XDG_DATA_DIRS searches /usr/local/share first,
# so the panel matches a Chrome window to this launcher instead of to
# Chrome's, and the room gets one button rather than two.
for entry in "$ROOT"/config/plasma/applications-local/*.desktop; do
    install -Dm644 "$entry" \
        "$STAGE/usr/local/share/applications/$(basename "$entry")"
done

install -Dm644 \
    "$ROOT/config/plasma/solid/ekklesia-dvd.desktop" \
    "$STAGE/usr/share/solid/actions/ekklesia-dvd.desktop"

for icon in ekklesia-wonderink ekklesia-parent-call; do
    install -Dm644 \
        "$ROOT/config/icons/${icon}.svg" \
        "$STAGE/usr/share/icons/hicolor/scalable/apps/${icon}.svg"
done

# The panel is the only way a teacher has of getting anywhere. Plasma gives
# up restarting it after three crashes in a minute; this does not.
install -Dm644 \
    "$ROOT/systemd/user/plasma-plasmashell.service.d/ekklesia-classroom.conf" \
    "$STAGE/etc/systemd/user/plasma-plasmashell.service.d/ekklesia-classroom.conf"

install -Dm644 \
    "$ROOT/systemd/user/ekklesia-classroom-audio.service" \
    "$STAGE/etc/systemd/user/ekklesia-classroom-audio.service"

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

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

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

install -Dm644 \
    "$ROOT/lib/classroom_audio.py" \
    "$STAGE/usr/local/lib/ekklesia-classroom/classroom_audio.py"

# Still here, and still sway-shaped.
#
# The DVD control surface and the MQTT notifier were deliberately not
# rewritten in this change, because the room's disc playback works and
# breaking it to tidy the tree would be a bad trade. classroom-window and
# classroom_sway speak sway's IPC, so the DVD player's focus handling is
# the one part of the classroom that does NOT yet work on this desktop.
# See docs/classroom-v2-experiment.md.
install -Dm755 \
    "$ROOT/scripts/classroom-window" \
    "$STAGE/usr/local/bin/classroom-window"

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

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

install -Dm644 \
    "$ROOT/lib/classroom_sway.py" \
    "$STAGE/usr/local/lib/ekklesia-classroom/classroom_sway.py"

install -Dm644 \
    "$ROOT/lib/classroom_optical.py" \
    "$STAGE/usr/local/lib/ekklesia-classroom/classroom_optical.py"

# The DVD overlay draws its own control bar as a layer-shell surface, so it
# still needs the icon and stylesheet helpers the dock used to share.
install -Dm644 \
    "$ROOT/lib/classroom_icons.py" \
    "$STAGE/usr/local/lib/ekklesia-classroom/classroom_icons.py"

install -Dm644 \
    "$ROOT/lib/classroom_style.py" \
    "$STAGE/usr/local/lib/ekklesia-classroom/classroom_style.py"

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

# DVD mode control bar.
for icon in media-play media-pause chapter-prev chapter-next \
        disc-menu eject close; do
    install -Dm644 \
        "$ROOT/config/icons/${icon}.svg" \
        "$STAGE/etc/ekklesia-classroom/icons/${icon}.svg"
done

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

install -Dm644 \
    "$ROOT/VERSION" \
    "$STAGE/usr/local/lib/ekklesia-classroom/VERSION"

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

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