From f5413da537772d8adee88a28cd21a80a54fa18a8 Mon Sep 17 00:00:00 2001
From: Martin Winkler <efelon@winklerfamilie.eu>
Date: Sun, 15 Jan 2023 17:50:05 +0100
Subject: [PATCH] homeassistant (core) - first version to upgrade/change venv,
 pip and homeassistant itself

---
 seqs/homeassistant.cfg.example |   6 ++
 seqs/homeassistant.sh          | 137 +++++++++++++++++++++++++++++++++
 2 files changed, 143 insertions(+)
 create mode 100644 seqs/homeassistant.cfg.example
 create mode 100755 seqs/homeassistant.sh

diff --git a/seqs/homeassistant.cfg.example b/seqs/homeassistant.cfg.example
new file mode 100644
index 0000000..1d1babe
--- /dev/null
+++ b/seqs/homeassistant.cfg.example
@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+readonly sc_haUser="homeassistant"
+readonly sc_haVenv="/srv/homeassistant"
+# Additional pip packages (homeassistant already included)
+readonly sc_haDeps=()
diff --git a/seqs/homeassistant.sh b/seqs/homeassistant.sh
new file mode 100755
index 0000000..2099d0c
--- /dev/null
+++ b/seqs/homeassistant.sh
@@ -0,0 +1,137 @@
+#!/usr/bin/env bash
+# Homeassistant core
+
+readonly toolName="homeassistant"
+readonly toolService="home-assistant"
+
+# Already defined by sequencer.sh, but may be overwritten
+#readonly seq_configName="${sq_scriptName:?}.cfg"
+#readonly seq_configTemplate="${seq_origin:?}/${sq_configName:?}.example"
+
+sq_aptOpt=
+sq_config=0
+
+seq_config() {
+  ## or to use sequencer api with global config file:
+  if ! initSeqConfig "${seq_configName:?}" "${seq_configTemplate:?}" ; then
+    # End if no configuration file exists
+    dry || return 1
+  fi
+
+  ## Apt cmdline option to suppress user interaction
+  interactive || sq_aptOpt="-y"
+
+  ## Return of non zero value will abort the sequence
+  return 0
+}
+
+step_4_info() { echo 'Create home-assistant venv'; }
+step_4_alias() { echo 'venv'; }
+step_4_options() { echo '[PYTHON BINARY]'; }
+step_4() {
+  shift
+  local pyBin="python3"
+  [ -d "${sc_haVenv}" ] && die "${toolName} venv already exists"
+  [ -f "${1:-}" ] && pyBin="${1}"
+  exe mkdir -p "${sc_haVenv:?}"
+  exe chown "${sc_haUser}:" "${sc_haVenv}"
+  runAsHa createVenv "${pyBin}" "${sc_haVenv}"
+}
+
+# createVenv <PYTHON BINARY> <VENV LOCATION>
+createVenv() {
+  cd "${2:?}" && "${1:?}" -m venv .
+}
+
+step_20_info() { echo "Upgrade pip"; }
+step_20_alias() { echo 'upgradepip'; }
+step_20() {
+  runAsHa updatePy "${sc_haVenv}" pip
+  endReturn "Could not upgrade pip"
+}
+
+step_21_info() { echo "Upgrade $toolName core installation"; }
+step_21_alias() { echo "upgrade"; }
+step_21() {
+  exe service "${toolService}" stop
+  endReturn "Could not stop ${toolName}"
+  runAsHa updatePy "${sc_haVenv}" homeassistant "${sc_haDeps[@]}"
+  endReturn "Could not upgrade ${toolName}"
+  exe service "${toolService}" start
+}
+
+# updateHa <HA VENV ROOT> [OPTIONAL PIP PACKAGE ...]
+updatePy() {
+  source "${1:?}/bin/activate"
+  shift
+  pip3 install --upgrade "$@"
+}
+
+step_30_info() { echo 'Upgrade venv to new python version'; }
+step_30_options() { echo '<PYTHON VERSION>'; }
+step_30_alias() { echo 'upgradevenv'; }
+step_30() {
+  shift
+  local pyVer="${1:-}"
+  local buDate="$(date +%Y%m%d-%H%M%S)"
+  endIfEmpty pyVer "No python version given"
+  exe service "${toolService}" stop
+  endReturn "Could not stop ${toolName}"
+  exe mv "${sc_haVenv}" "${sc_haVenv}_bu_${buDate}" 2>/dev/null || true
+  local pyBin="$(command -v "python${pyVer}")"
+  step venv "${pyBin}"
+}
+
+step_31_info() { echo "Install ${toolName} in venv"; }
+step_31() {
+  runAsHa installHa "${sc_haVenv}" "${sc_haDeps[@]}"
+}
+
+installHa() {
+  cd "${1:?}" && source "bin/activate" || return 1
+  shift
+  python3 -m pip install wheel
+  pip3 install homeassistant "$@"
+}
+
+step_32_info() { echo "Start $toolName in new venv"; }
+step_32() {
+  exe service "${toolService}" start
+}
+
+# runAsHa <FUNCTION> [ARGS...]
+# Run given function as home-assistant user inside the virtual environment
+runAsHa() {
+  local func="${1:?}"
+  shift
+  exe sudo -Hu "${sc_haUser}" bash -c "$(declare -f "${func}"); ${func} "'"$@"' "" "$@"
+}
+
+step_50_alias() { echo 'notes'; }
+step_50() {
+  color green
+  cat <<NOTES_END
+# Systemd service example
+
+[Unit]
+Description=Home Assistant
+After=network-online.target
+
+[Service]
+Type=simple
+User=homeassistant
+WorkingDirectory=/home/homeassistant/.homeassistant
+ExecStart=${sc_haVenv:-"/srv/homeassistant"}/bin/hass -c "/home/homeassistant/.homeassistant"
+RestartForceExitStatus=100
+Restart=on-failure
+RestartSec=5s
+
+[Install]
+WantedBy=multi-user.target
+NOTES_END
+}
+
+# shellcheck disable=SC2034 # Appears unused
+readonly sqr_minVersion=16
+# shellcheck disable=SC1091 # Don't follow this source
+. /usr/local/bin/sequencer.sh