Setup Fish Terminal (Ubuntu & MacOS)

setup-fish.sh

#!/usr/bin/env bash
set -e

echo "🐟 Fish Shell Setup (Cross OS)"

OS="$(uname -s)"

install_fish_mac() {
  echo "🍎 Detected macOS"

  if ! command -v brew >/dev/null 2>&1; then
    echo "❌ Homebrew not found. Install brew first."
    exit 1
  fi

  brew install fish || true
  brew install fzf || true
}

install_fish_ubuntu() {
  echo "🐧 Detected Linux (Ubuntu/Debian)"

  if ! command -v apt >/dev/null 2>&1; then
    echo "❌ apt not found. Unsupported distro."
    exit 1
  fi

  sudo apt update || true
  sudo apt install -y fish curl fzf || true
}

# ===== OS detection =====
case "$OS" in
  Darwin)
    install_fish_mac
    ;;
  Linux)
    install_fish_ubuntu
    ;;
  *)
    echo "❌ Unsupported OS: $OS"
    exit 1
    ;;
esac

FISH_PATH="$(command -v fish)"
echo "➡️ Fish binary: $FISH_PATH"

# ===== Register fish shell =====
#if [ -w /etc/shells ] && ! grep -q "$FISH_PATH" /etc/shells; then
#  echo "🔐 Registering fish to /etc/shells"
#  echo "$FISH_PATH" | sudo tee -a /etc/shells >/dev/null
#fi

# ===== Change default shell (optional, safe) =====
#if [ "$SHELL" != "$FISH_PATH" ]; then
#  echo "🔁 Setting fish as default shell"
#  chsh -s "$FISH_PATH" || echo "⚠️ Cannot change default shell (non-interactive or restricted)"
#fi

# ===== Install Fisher (OFFICIAL LINK from you) =====
echo "📦 Installing Fisher"
fish -c 'curl -sL https://raw.githubusercontent.com/jorgebucaran/fisher/main/functions/fisher.fish | source && fisher install jorgebucaran/fisher'

# ===== Install plugins =====
echo "✨ Installing fish plugins"
fish -c '
fisher install \
  IlanCosman/tide@v6 \
  PatrickF1/fzf.fish \
  jorgebucaran/autopair.fish \
  jethrokuan/z
'

# ===== Fish config =====
#echo "⚙️ Writing fish config"
#mkdir -p ~/.config/fish

cat << "EOF" > ~/.config/fish/config.fish
# =========================
# Basic environment
# =========================
#set -gx LANG en_US.UTF-8
#set -gx LC_ALL en_US.UTF-8
#set -gx EDITOR nano

# =========================
# PATH handling
# =========================
#if test -d /opt/homebrew/bin
#  set -gx PATH /opt/homebrew/bin \$PATH
#end

#if test -d /usr/local/bin
#  set -gx PATH /usr/local/bin \$PATH
#end

# =========================
# Aliases
# =========================
#alias ll="ls -lah"
#alias gs="git status"
#alias ga="git add ."
#alias gc="git commit -m"
#alias gp="git push"

# =========================
# tmux awareness
# =========================
if test -n "\$TMUX"
  set -gx TERM tmux-256color
end
EOF

echo "✅ Fish setup finished"
echo ""
echo "➡️ Next steps:"
echo "   exec fish"
echo "   tide configure"