#!/bin/bash
# Enable bakery systemd --user units for every account (current and future).
#
# `systemctl --global enable` writes /etc/systemd/user/<target>.wants/ so a
# later `useradd -m` does not need per-home enablement. Bins live in
# /usr/local; only per-user state comes from skel.
#
# Safe on the live image and in the Calamares post-install chroot.
# Idempotent. Does not start units (no user session required).
#
# breadclipd is WantedBy=graphical-session.target. BOS does not activate
# that target (no uwsm), so Hyprland still `systemctl --user start`s it.
# --global enable still records it for every account / bos-settings.
set -uo pipefail

UNITS_DIR=/usr/lib/systemd/user
PRESET=/usr/lib/systemd/user-preset/90-bos-bakery.preset

is_blocked() {
    case "$1" in
        breadcast*|breadarr*) return 0 ;;
        *) return 1 ;;
    esac
}

is_bakery_unit() {
    local unit="$1" path="$UNITS_DIR/$unit"
    [[ -f "$path" ]] || return 1
    is_blocked "$unit" && return 1
    grep -qE '^ExecStart=/usr/local/bin/' "$path"
}

list_from_preset() {
    [[ -f "$PRESET" ]] || return 0
    awk '/^enable[[:space:]]/ { print $2 }' "$PRESET"
}

list_from_units_dir() {
    [[ -d "$UNITS_DIR" ]] || return 0
    local path unit
    for path in "$UNITS_DIR"/*.service; do
        [[ -f "$path" ]] || continue
        unit="$(basename "$path")"
        is_bakery_unit "$unit" && printf '%s\n' "$unit"
    done
}

list_from_installed_json() {
    local json=/etc/skel/.local/state/bakery/installed.json
    [[ -f "$json" ]] || return 0
    command -v python3 >/dev/null 2>&1 || return 0
    python3 - "$json" <<'PY'
import json, sys
with open(sys.argv[1]) as f:
    data = json.load(f)
for pkg in data.get("packages", data).values():
    if not isinstance(pkg, dict):
        continue
    for svc in pkg.get("services") or []:
        name = svc["unit"] if isinstance(svc, dict) else svc
        if name and not str(name).startswith(("breadcast", "breadarr")):
            print(name)
PY
}

mapfile -t units < <(
    { list_from_preset; list_from_units_dir; list_from_installed_json; } \
        | sed '/^$/d' | sort -u
)

if [[ ${#units[@]} -eq 0 ]]; then
    echo "WARN: no bakery user units found to enable globally"
    exit 0
fi

if ! command -v systemctl >/dev/null 2>&1; then
    echo "WARN: systemctl missing — cannot --global enable bakery user units"
    exit 0
fi

for unit in "${units[@]}"; do
    [[ -f "$UNITS_DIR/$unit" ]] || continue
    is_blocked "$unit" && continue
    if ! grep -q '^\[Install\]' "$UNITS_DIR/$unit"; then
        echo "WARN: $unit has no [Install] section — skip --global enable"
        continue
    fi
    systemctl --global enable "$unit" \
        || echo "WARN: systemctl --global enable $unit failed"
done