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Initiales Halloween-Projekt
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#!/usr/bin/env bash
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set -euo pipefail
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project_dir=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd -P)
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service_name=halloween-grab.service
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unit_path="/etc/systemd/system/$service_name"
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apply=false
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usage() {
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cat <<'EOF'
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Richtet die Halloween-WebUI als systemd-Dienst auf dem Raspberry Pi ein.
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Aufruf: bash tools/install_pi_service.sh [--apply]
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Ohne --apply wird nur die geplante Unit gezeigt. --apply installiert sie mit
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sudo, aktiviert den Autostart und startet die WebUI sofort neu.
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EOF
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}
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die() {
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printf 'Fehler: %s\n' "$*" >&2
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exit 2
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}
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while (($#)); do
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case $1 in
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--apply) apply=true; shift ;;
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-h|--help) usage; exit 0 ;;
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*) die "Unbekanntes Argument: $1" ;;
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esac
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done
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service_user=$(id -un)
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[[ $service_user =~ ^[a-zA-Z_][a-zA-Z0-9_-]*$ ]] || die 'Ungeeigneter Benutzername für systemd'
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[[ $service_user != root ]] || die 'Skript als normaler Pi-Benutzer ausführen, nicht als root'
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[[ $project_dir =~ ^/[a-zA-Z0-9_./-]+$ ]] || die 'Projektpfad enthält für die Unit ungeeignete Zeichen'
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[[ /$project_dir/ != *'/../'* && /$project_dir/ != *'/./'* ]] || die 'Projektpfad enthält . oder .. Segmente'
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unit_contents=$(cat <<EOF
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# Managed by Halloween project: tools/install_pi_service.sh
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[Unit]
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Description=Halloween-Grab WebUI und Kamera
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After=network.target
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[Service]
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Type=simple
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User=$service_user
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WorkingDirectory=$project_dir
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ExecStart=$project_dir/.venv/bin/python $project_dir/run.py
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Environment=PYTHONUNBUFFERED=1
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Restart=on-failure
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RestartSec=3
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[Install]
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WantedBy=multi-user.target
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EOF
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)
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printf 'Dienst: %s\nBenutzer: %s\nProjekt: %s\n' "$service_name" "$service_user" "$project_dir"
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if ! $apply; then
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printf '\nVorschau für %s:\n%s\n' "$unit_path" "$unit_contents"
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printf '\nMit --apply installieren, aktivieren und starten.\n'
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exit 0
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fi
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[[ -f "$project_dir/run.py" ]] || die 'run.py fehlt im Projektordner'
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[[ -x "$project_dir/.venv/bin/python" ]] || die '.venv fehlt; zuerst SOFTWARE.md: Pi vorbereiten ausführen'
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"$project_dir/.venv/bin/python" -c 'import fastapi, uvicorn, PIL' \
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|| die 'Python-Abhängigkeiten fehlen; zuerst requirements.txt installieren'
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command -v sudo >/dev/null || die 'sudo fehlt'
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command -v systemctl >/dev/null || die 'systemctl fehlt'
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if sudo test -e "$unit_path" &&
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! sudo grep -qF '# Managed by Halloween project: tools/install_pi_service.sh' "$unit_path"; then
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die "Vorhandene fremde Unit wird nicht überschrieben: $unit_path"
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fi
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temp_unit=$(mktemp)
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trap 'rm -f -- "$temp_unit"' EXIT
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printf '%s\n' "$unit_contents" > "$temp_unit"
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sudo install -m 0644 -- "$temp_unit" "$unit_path"
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sudo systemctl daemon-reload
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sudo systemctl enable "$service_name"
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sudo systemctl restart "$service_name"
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if ! systemctl is-active --quiet "$service_name"; then
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die "Dienst läuft nicht; Diagnose: sudo journalctl -u $service_name -n 80 --no-pager"
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fi
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printf 'Autostart aktiviert und Dienst gestartet. Status: systemctl status %s\n' "$service_name"
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