bin/dot

   1 #!/bin/bash
   2 ENVS="$HOME/envs"  # Python environments - including required Ansible
   3 ANSIBLE="$ENVS/ansible/bin/ansible-playbook"  # Core command
   4 TASKFILE="$HOME/backup/dot.$HOSTNAME.yaml"  # Backup of localhost config
   5 DOTFILES="$HOME/dotfiles"  # Where to find dotfiles
   6
   7 LINKFILES="$DOTFILES/files"  # Files to symlink
   8 INSTALLS="$DOTFILES/install"  # Install scripts
   9 DOT="$HOME/.dot"  # Touched files go here to track installs
  10 REQS="$DOTFILES/reqs"  # Python env requirements.txt files
  11
  12 mkdir -p "$DOT"
  13
  14 read -d '' HELP << EOF
  15 dot - a (mostly) one script dotfiles manager
  16
  17 Copyright 2026 Edward Delaporte V
  18 Licensed under AGPLv3 and later.
  19
  20 dot setup
  21         install ansible CLI to $ANSIBLE
  22
  23 dot link FILE
  24   updates ~/dot.HOSTNAME.yaml
  25   to include a symlink from ~/dotfiles/files/FILE to ~/.FILE
  26
  27 dot check
  28         check setup against ~/backup/dot.HOSTNAME.yaml
  29
  30 dot apply
  31         apply config in ~/backup/dot.HOSTNAME.yaml
  32
  33 dot help FEATURE
  34   setup - more information on setup
  35   all - additional features
  36 EOF
  37
  38 read -d '' SETUP_HELP << EOF
  39 ## Setup
  40
  41 1. Install this file on your path
  42 2. Clone your (or my) 'dotfiles' repository to ~/dotfiles
  43 3. Run 'dot help' to get started.
  44
  45 EOF
  46
  47
  48 read -d '' EXTRA_HELP << EOF
  49
  50 dot install SCRIPT
  51   updates ~/dot.HOSTNAME.yaml
  52   to run ~/dotfiles/SCRIPT.sh if it has not yet been run
  53   creates ~/dot/SCRIPT.installed after SCRIPT has been run
  54
  55 dot env ENV
  56   create Python environment ~/envs/ENV based on ~/dotfiles/reqs/ENV.txt
  57
  58 EOF
  59
  60
  61 if [ ! -n "$1" ] || [ "$1" == "help" ]; then
  62         echo "$HELP"
  63 fi
  64 if [ "$1" == "help" ] && [ "$2" == "all" ]; then
  65         echo ""
  66         echo "$EXTRA_HELP"
  67         echo ""
  68         echo "$SETUP_HELP"
  69 fi
  70 if [ "$1" == "help" ] && [ "$2" == "setup" ]; then
  71         echo ""
  72         echo "$SETUP_HELP"
  73 fi
  74
  75 # set -v
  76 #
  77
  78
  79 read -d '' EMPTY_TASKFILE << EOF
  80 ---
  81 - name: Set up dotfiles on $HOSTNAME
  82   gather_facts: no
  83   hosts: localhost
  84   connection: local
  85
  86   tasks:
  87     - name: Check on $TASKFILE
  88       ansible.builtin.stat:
  89         path: $TASKFILE
  90 EOF
  91
  92 if [[ ! -f "$TASKFILE" ]]; then
  93         echo "Creating empty $TASKFILE"
  94         mkdir -p "$HOME/backup"
  95         echo "$EMPTY_TASKFILE" >> $TASKFILE
  96 fi
  97
  98 if [ "$1" == "setup" ]; then
  99   if [[ ! -f "$ANSIBLE" ]]; then
 100                 mkdir -p "$ENVS"
 101                 echo "Setting up Ansible in ~/envs/ansible"
 102                 cd $HOME/envs; python3 -m venv ansible
 103                 $HOME/envs/ansible/bin/pip install ansible jinja2
 104         fi
 105   if [[ -f "$ANSIBLE" ]]; then
 106                 echo "[ ok ]: Ansible setup at $ANSIBLE"
 107         fi
 108   if [[ -f "$TASKFILE" ]]; then
 109                 echo "[ ok ]: dot config at $TASKFILE"
 110         fi
 111 fi
 112
 113 if [ "$1" == "reset" ]; then
 114         read -n1 -p "Reset $TASKFILE? [y,N]" input
 115         if [[ ! $input == "Y" && ! $input == "y" ]]; then
 116                 echo "Aborted by user"
 117                 exit 1
 118         fi
 119         echo "$EMPTY_TASKFILE" > $TASKFILE
 120         echo ""
 121 fi
 122
 123
 124 if [ "$1" == "check" ]; then
 125         $ANSIBLE $TASKFILE --check --diff
 126 fi
 127
 128 if [ "$1" == "link" ]; then
 129         if [ ! -n "$2" ]; then
 130                 echo "Can symlink: (from $LINKFILES)"
 131                 cd $LINKFILES
 132                 ls -p | grep -v /
 133                 exit 1
 134         fi
 135
 136 read -d '' LINK_THIS_FILE << EOF
 137
 138     - name: symlink $2
 139       ansible.builtin.file:
 140         src: "$LINKFILES/$2"
 141         dest: "$HOME/.$2"
 142         state: "link"
 143 EOF
 144
 145 if [[ "$2" == *"."* ]];then
 146         # File already contains a dot
 147 read -d '' LINK_THIS_FILE << EOF
 148
 149     - name: symlink $2
 150       ansible.builtin.file:
 151         src: "$LINKFILES/$2"
 152         dest: "$HOME/$2"
 153         state: "link"
 154 EOF
 155
 156
 157 fi
 158
 159         echo "    $LINK_THIS_FILE" >> $TASKFILE
 160         echo "$2 added to symlinks in $TASKFILE"
 161         echo "Run 'dot apply' to create all configured symlinks"
 162 fi
 163
 164 if [ "$1" == "apply" ]; then
 165   if [[ ! -f "$TASKFILE" ]]; then
 166                 echo "$TASKFILE is missing. Run 'dot setup'"
 167                 exit 1
 168         fi
 169         $ANSIBLE -v $TASKFILE
 170 fi
 171
 172 if [ "$1" == "install" ]; then
 173         if [ ! -n "$2" ]; then
 174                 echo "Can install: (.sh scripts in $INSTALLS)"
 175                 cd $INSTALLS
 176                 ls -p | grep -v / | grep .sh
 177                 exit 1
 178         fi
 179   if [[ ! -f "$INSTALLS/$2.sh" ]]; then
 180                 echo "No such install script $INSTALLS/$2.sh"
 181                 echo "Run dot install with no params to list scripts."
 182                 exit 1
 183         fi
 184
 185 mkdir -p $DOT
 186 read -d '' RUN_INSTALL << EOF
 187     - name: check $2
 188       stat:
 189         path: "$DOT/$2.installed"
 190       register: $2_installed
 191     - name: install $2
 192       ansible.builtin.shell: |
 193         "$INSTALLS/$2.sh" && touch "$DOT/$2.installed"
 194       register: ret
 195       failed_when: >
 196           ("Error" in ret.stdout) or
 197           (ret.stderr != '') or
 198           (ret.rc != 10)
 199       when: not $2_installed.stat.exists
 200     - name: verify $2 is installed
 201       ansible.builtin.debug:
 202         msg: "$2 is installed."
 203       when: $2_installed.stat.exists
 204 EOF
 205         echo "    $RUN_INSTALL" >> $TASKFILE
 206         echo "Run 'dot apply' to run the install"
 207 fi
 208
 209
 210 if [ "$1" == "env" ]; then
 211         if [ ! -n "$2" ]; then
 212                 echo "Can create: (.txt files in $REQS)"
 213                 cd $REQS
 214                 ls -p | grep -v / | grep .txt
 215                 exit 1
 216         fi
 217   if [[ ! -f "$REQS/$2.txt" ]]; then
 218                 echo "No such requirements file script $REQS/$2.txt"
 219                 echo "Run dot env with no params to list files."
 220                 exit 1
 221         fi
 222
 223 read -d '' ADD_ENV << EOF
 224     - name: check env $2
 225       stat:
 226         path: "$ENVS/$2"
 227       register: $2_path
 228     - name: add env $2
 229       ansible.builtin.shell: |
 230         cd $ENVS
 231         python3 -m venv $2
 232         $ENVS/$2/bin/python -m pip install -r $REQS/$2.txt
 233       when: not $2_path.stat.exists
 234     - name: verify env $2 exists
 235       ansible.builtin.debug:
 236         msg: "env $2 exists"
 237       when: $2_path.stat.exists
 238 EOF
 239         echo "    $ADD_ENV" >> $TASKFILE
 240         echo "Run 'dot apply' to run the install"
 241 fi
 242