setup.sh

#!/bin/zsh

set -euo pipefail

cd "$(dirname "$0")"

# setup variables
EMAIL="mjburghoffer@gmail.com"
SSH_KEY="$HOME/.ssh/github_personal"    # key for github ssh auth
VERIFIER_KEY="$HOME/.ssh/git_verifier"  # key for git signed commits

# macOS settings
echo "Set up macOS settings"
defaults write -g KeyRepeat -int 1
defaults write -g InitialKeyRepeat -int 15

# install xcode command line tools (needed by brew)
XCODE_SELECT_STATUS=0
xcode-select -p > /dev/null 2>&1 || XCODE_SELECT_STATUS=$?
if [[ $XCODE_SELECT_STATUS != 0 ]]; then
  echo "Installing Xcode command line tools"
  xcode-select --install > /dev/null 2>&1 || true
fi

# install + set up brew
BREWPATH=""
ARCH=$(arch)
if [ "$ARCH" = "arm64" ]; then
  BREWPATH="/opt/homebrew/bin/brew"
else
  BREWPATH="/usr/local/bin/brew"
fi

if [ ! -f "$BREWPATH" ]; then
  echo "Installing brew because '$BREWPATH' does not exist"
  /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
fi

echo "Set up brew shellenv"
eval "$("$BREWPATH" shellenv)"

# install stuff
brew update --quiet
brew install git-delta git zsh sheldon fzf jq openssl starship neovim fd mise uv gh
brew install --cask zed font-jetbrains-mono-nerd-font

# initialize sheldon
echo "Installing Sheldon"
mkdir -p "$HOME/.config/sheldon"
rsync -u ./sheldon/plugins.toml "$HOME/.config/sheldon/plugins.toml"

sheldon lock

# mise runtime versions
echo "Set up mise"
mkdir -p "$HOME/.config/mise"
rsync -u ./mise/config.toml "$HOME/.config/mise/config.toml"
(cd "$HOME" && mise install)

# profile files
echo "Set up zprofile"
rsync -u ./zprofile.zsh "$HOME/.zprofile"

echo "Set up zshrc"
rsync -u ./zshrc.zsh "$HOME/.zshrc"

echo "Set up editor helper"
mkdir -p "$HOME/.zsh_utils"
rsync -u ./editor.zsh "$HOME/.zsh_utils/editor.zsh"

# starship stuff
echo "Set up starship"
mkdir -p "$HOME/.starship/cache"
rsync -u ./starship.toml "$HOME/.starship/"

# iterm stuff - make sure to import into iterm
echo "Set up iterm config"
mkdir -p "$HOME/.iterm2"
rsync -u ./com.googlecode.iterm2.plist "$HOME/.iterm2/"

# ssh keys — use existing keys if present, otherwise generate them
ensure_ssh_key() {
  local keypath="$1"
  if [ -f "$keypath" ] && [ -f "$keypath.pub" ]; then
    echo "Using existing SSH key at $keypath"
  else
    echo "Generating ed25519 SSH key at $keypath"
    mkdir -p "$HOME/.ssh"
    chmod 700 "$HOME/.ssh"
    ssh-keygen -t ed25519 -C "$EMAIL" -f "$keypath" -N ''
  fi
}

ensure_ssh_key "$SSH_KEY"
ensure_ssh_key "$VERIFIER_KEY"

# ssh config — route github.com auth through the personal key
echo "Set up ssh config"
SSH_CONFIG="$HOME/.ssh/config"
touch "$SSH_CONFIG"
chmod 600 "$SSH_CONFIG"
if ! grep -qE '^[[:space:]]*Host[[:space:]]+github\.com([[:space:]]|$)' "$SSH_CONFIG"; then
  cat >> "$SSH_CONFIG" <<EOF

Host github.com
  HostName github.com
  User git
  IdentityFile $SSH_KEY
  IdentitiesOnly yes
  AddKeysToAgent yes
  UseKeychain yes
EOF
fi

# allowed signers (lets git verify your own signed commits locally)
echo "Set up git allowed signers"
mkdir -p "$HOME/.config/git"
{
  echo "$EMAIL $(cat "$SSH_KEY.pub")"
  echo "$EMAIL $(cat "$VERIFIER_KEY.pub")"
} > "$HOME/.config/git/allowed_signers"

# git configuration
echo "Set up git config"
git config --global user.email '2665798+mjburghoffer@users.noreply.github.com'
git config --global user.name 'Matthew Burghoffer'
git config --global init.defaultBranch 'main'
git config --global push.default 'current'
git config --global checkout.defaultRemote 'origin'
git config --global --type=bool checkout.autoSetupRemote 'true'
git config --global --type=bool fetch.prune 'true'
git config --global --type=bool rebase.autostash 'true'
git config --global core.editor 'nvim'
git config --global pull.ff 'only'
git config --global merge.conflictStyle 'zdiff3'
git config --global alias.set-upstream '!git branch --set-upstream-to=origin/`git symbolic-ref --short HEAD`'

# git diff/merge gui tool (Zed)
git config --global diff.tool 'zed'
git config --global difftool.zed.cmd 'zed --wait --diff "$LOCAL" "$REMOTE"'
git config --global merge.tool 'zed'
git config --global mergetool.zed.cmd 'zed --wait "$MERGED"'

# ssh commit signing
git config --global gpg.format 'ssh'
git config --global user.signingkey "$VERIFIER_KEY.pub"
git config --global --type=bool commit.gpgsign 'true'
git config --global --type=bool tag.gpgsign 'true'
git config --global gpg.ssh.allowedSignersFile "$HOME/.config/git/allowed_signers"

## delta pager
git config --global core.pager 'delta'
git config --global interactive.diffFilter 'delta --color-only'
git config --global --type=bool delta.navigate 'true'
git config --global --type=bool delta.line-numbers 'true'
git config --global --type=bool color.ui 'true'