export ZSH_CONFIG=$HOME/.config/zsh
export OHMYZSH=$ZSH_CONFIG/oh-my-zsh
export OHMYZSH_CUSTOM=$OHMYZSH/custom

# Bootstrap banner — built dynamically so the box stays aligned regardless
# of the version string length or terminal width.
_bootstrap_banner() {
  local inner=61  # inner width (between the vertical bars)
  local pad line
  local title="Zsh bootstrap - one-time environment setup (v${ZSHRC_BOOTSTRAP_VERSION})"
  local rule=$(printf '═%.0s' {1..$inner})
  local mid=$(printf '─%.0s' {1..$inner})
  # left-pad the title by 2 spaces so it doesn't hug the left bar
  title="  $title"
  pad=$(( inner - ${#title} ))
  (( pad < 0 )) && pad=0
  echo ""
  echo "╔${rule}╗"
  printf '║%s%*s║\n' "$title" "$pad" ""
  echo "╠${mid}╣"
  while IFS= read -r line; do
    line="  $line"
    pad=$(( inner - ${#line} ))
    (( pad < 0 )) && pad=0
    printf '║%s%*s║\n' "$line" "$pad" ""
  done <<'EOF'
This runs on first login or when the bootstrap version
changes. It installs missing CLI tools and clones oh-my-zsh
+ plugins across distros. Network calls time out after
~30s so an unreachable host skips silently. The first run
may take a minute; subsequent runs are a no-op.
EOF
  echo "╚${rule}╝"
  echo ""
}
_bootstrap_banner
unfunction _bootstrap_banner

# GitHub-release binary fallback. Used for tools not packaged in a distro's
# repos (e.g. bat/zoxide/git-delta on RHEL-family without EPEL, or no cargo).
# Resolves the latest release tag via the /releases/latest redirect (no API,
# no rate limits), builds the asset URL from a template, extracts, and copies
# the named binary into ~/.local/bin. Args:
#   $1 owner/repo   $2 asset template (%v = version, no leading v)
#   $3 binary name  $4 arch suffix to substitute into %a in the template
_gh_latest_tag() {
  local repo="$1"
  curl -fsIL --connect-timeout 5 --max-time 20 "https://github.com/$repo/releases/latest" 2>/dev/null \
    | grep -i '^location:' | tail -1 \
    | sed -E 's#.*tag/([^[:space:]"/]+).*#\1#'
}

_gh_install_bin() {
  local repo="$1" tmpl="$2" bin="$3"
  local rawtag ver asset ext tmp found
  rawtag=$(_gh_latest_tag "$repo")
  if [[ -z "$rawtag" ]]; then
    echo "  FAIL   could not resolve latest tag for $repo"; return 1
  fi
  ver="${rawtag#v}"   # strip optional leading v for asset-filename substitution
  asset="${tmpl//\%v/$ver}"
  ext="${asset##*.}"
  echo "  gh     installing $bin ($rawtag from $repo)"
  tmp=$(mktemp -d)
  if curl -fsSL --connect-timeout 5 --max-time 60 -o "$tmp/pkg.$ext" \
      "https://github.com/$repo/releases/download/$rawtag/$asset" \
     && { case "$ext" in
            gz) tar -xzf "$tmp/pkg.$ext" -C "$tmp" 2>/dev/null ;;
            *)  return 1 ;;
          esac; }; then
    found=$(find "$tmp" -type f -name "$bin" ! -name "*.*" | head -1)
    if [[ -n "$found" ]]; then
      cp "$found" "$HOME/.local/bin/$bin"
      chmod +x "$HOME/.local/bin/$bin"
      rm -rf "$tmp"; return 0
    fi
  fi
  rm -rf "$tmp"
  echo "  FAIL   could not download/extract $bin from $repo"; return 1
}

touch ~/.hushlogin
mkdir -p "$HOME/.local/bin"
mkdir -p "$ZSH_CONFIG"
path+=("$HOME/.local/bin")

# Package availability checks can hang on slow/unreachable mirrors (cold dnf
# metadata, apt update, pacman -Sy). Wrap them in a 20s timeout so the bootstrap
# never stalls the shell; a timed-out check just falls through to the next PM
# or to the binary installers below. Verbose output so real builds (cargo) and
# slow installs are visible as progress instead of an apparent hang.
for p in git starship fzf eza rsync lazydocker fastfetch tmux bat zoxide; do
  if command -v $p >/dev/null; then
    echo "  ok     $p (already installed)"
    continue
  fi
  echo "  ...    $p (checking package managers)"
  if command -v brew >/dev/null; then
    echo "  brew   installing $p" && brew install $p && continue
  fi
  if command -v apt >/dev/null; then
    if timeout 20 apt-cache show $p >/dev/null 2>&1; then
      echo "  apt    installing $p" && sudo apt install -y $p && continue
    else
      echo "  apt    $p not available (or metadata check timed out)"
    fi
  fi
  if command -v dnf >/dev/null; then
    if timeout 20 dnf list available $p >/dev/null 2>&1; then
      echo "  dnf    installing $p" && sudo dnf install -y $p && continue
    else
      echo "  dnf    $p not available (or metadata check timed out)"
    fi
  fi
  if command -v pacman >/dev/null; then
    if timeout 20 pacman -Si $p >/dev/null 2>&1; then
      echo "  pacman installing $p" && sudo pacman -Sy --noconfirm $p && continue
    else
      echo "  pacman $p not available (or metadata check timed out)"
    fi
  fi
  if command -v cargo >/dev/null; then
    echo "  cargo  installing $p (may take a few minutes to compile)" && cargo install $p --locked && continue
  fi
  echo "  FAIL   could not install $p by any method; skipping"
done

if ! command -v starship >/dev/null; then
  echo "  curl   installing starship binary"
  curl -fsSL --connect-timeout 5 --max-time 30 https://starship.rs/install.sh | sh -s -- -b ~/.local/bin -y
fi

if ! command -v lazydocker >/dev/null; then
  echo "  curl   installing lazydocker binary"
  curl -fsSL --connect-timeout 5 --max-time 30 https://raw.githubusercontent.com/jesseduffield/lazydocker/master/scripts/install_update_linux.sh | \
    DIR=$HOME/.local/bin bash
fi

# Debian/Ubuntu ships bat as 'batcat' and fd as 'fdfind'; symlink to the
# canonical names so the zshrc integrations (which call bat/fd) work everywhere.
if ! command -v bat >/dev/null && command -v batcat >/dev/null; then
  ln -sf "$(command -v batcat)" "$HOME/.local/bin/bat"
fi
if ! command -v fd >/dev/null && command -v fdfind >/dev/null; then
  ln -sf "$(command -v fdfind)" "$HOME/.local/bin/fd"
fi

# git-delta: the package is named 'git-delta' on every package manager but the
# binary is 'delta' (name mismatch vs the install loop above), so install via the
# same PM cascade using the real package name. Used by zshrc as GIT_PAGER.
if ! command -v delta >/dev/null; then
  echo "  ...    delta (checking package managers, package name is 'git-delta')"
  if command -v brew >/dev/null; then
    echo "  brew   installing git-delta" && brew install git-delta
  elif command -v apt >/dev/null && timeout 20 apt-cache show git-delta >/dev/null 2>&1; then
    echo "  apt    installing git-delta" && sudo apt install -y git-delta
  elif command -v dnf >/dev/null && timeout 20 dnf list available git-delta >/dev/null 2>&1; then
    echo "  dnf    installing git-delta" && sudo dnf install -y git-delta
  elif command -v pacman >/dev/null && timeout 20 pacman -Si git-delta >/dev/null 2>&1; then
    echo "  pacman installing git-delta" && sudo pacman -Sy --noconfirm git-delta
  elif command -v cargo >/dev/null; then
    echo "  cargo  installing git-delta (may take a few minutes to compile)" && cargo install git-delta --locked
  else
    echo "  FAIL   could not install delta; skipping"
  fi
fi

arch=$(uname -m)
target_musl=""; target_gnu=""
case "$arch" in
  x86_64)       target_fast="linux-amd64" && target_eza="x86_64-unknown-linux-gnu" \
                  && target_musl="x86_64-unknown-linux-musl" && target_gnu="x86_64-unknown-linux-gnu" ;;
  aarch64|arm64) target_fast="linux-aarch64" && target_eza="aarch64-unknown-linux-gnu" \
                  && target_musl="aarch64-unknown-linux-musl" && target_gnu="aarch64-unknown-linux-gnu" ;;
  armv7l)       target_fast="linux-armv7l" && target_eza="armv7-unknown-linux-gnueabihf" \
                  && target_musl="armv7-unknown-linux-musleabihf" && target_gnu="armv7-unknown-linux-gnueabihf" ;;
esac

if [[ -n $target_fast && -n $target_eza ]]; then
  if ! command -v fastfetch >/dev/null; then
    echo "  curl   installing fastfetch (github release tarball)"
    if curl -fsSL --connect-timeout 5 --max-time 30 -o /tmp/fastfetch.tar.gz \
        "https://github.com/fastfetch-cli/fastfetch/releases/latest/download/fastfetch-${target_fast}.tar.gz" \
        && tar -xzf /tmp/fastfetch.tar.gz -C /tmp 2>/dev/null; then
      ffdir=$(find /tmp -maxdepth 1 -type d -name 'fastfetch*' | head -1)
      if [[ -n "$ffdir" ]]; then
        cp "$ffdir/usr/bin/fastfetch" "$HOME/.local/bin/"
        chmod +x "$HOME/.local/bin/fastfetch"
        mkdir -p "$HOME/.local/share/fastfetch"
        cp -r "$ffdir/usr/share/fastfetch/"* "$HOME/.local/share/fastfetch/"
      fi
      rm -rf "$ffdir" /tmp/fastfetch.tar.gz
    else
      rm -f /tmp/fastfetch.tar.gz
      echo "  FAIL   could not download/extract fastfetch; skipping"
    fi
  fi

  if ! command -v eza >/dev/null; then
    echo "  curl   installing eza (github release tarball)"
    if curl -fsSL --connect-timeout 5 --max-time 30 -o /tmp/eza.tar.gz \
        "https://github.com/eza-community/eza/releases/latest/download/eza_${target_eza}.tar.gz" \
        && tar -xzf /tmp/eza.tar.gz -C "$HOME/.local/bin/" 2>/dev/null; then
      chmod +x "$HOME/.local/bin/eza"
    else
      rm -f /tmp/eza.tar.gz
      echo "  FAIL   could not download/extract eza; skipping"
    fi
    rm -f /tmp/eza.tar.gz
  fi
fi

# GitHub-release binary fallbacks for tools often missing from distro repos
# (e.g. bat/zoxide/git-delta on RHEL/Alma without EPEL, or boxes with no cargo).
# Tried after the PM/cargo loop above already failed for these. Static musl
# builds preferred so there are no glibc dependencies; delta ships gnu-only.
if ! command -v bat >/dev/null && [[ -n "$target_musl" ]]; then
  _gh_install_bin "sharkdp/bat" "bat-v%v-$target_musl.tar.gz" "bat"
fi

if ! command -v zoxide >/dev/null && [[ -n "$target_musl" ]]; then
  _gh_install_bin "ajeetdsouza/zoxide" "zoxide-%v-$target_musl.tar.gz" "zoxide"
fi

if ! command -v delta >/dev/null && [[ -n "$target_gnu" ]]; then
  _gh_install_bin "dandavison/delta" "delta-%v-$target_gnu.tar.gz" "delta"
fi

mkdir -p "$HOME/.config/zsh"

if [ ! -d "$OHMYZSH" ]; then
  echo "  git    cloning oh-my-zsh"
  GIT_TERMINAL_PROMPT=0 git -c http.lowSpeedLimit=1000 -c http.lowSpeedTime=10 \
    clone --depth=1 https://github.com/ohmyzsh/ohmyzsh.git $OHMYZSH || \
    echo "  FAIL   could not clone oh-my-zsh"
fi

for plug in \
  "zsh-autosuggestions|https://github.com/zsh-users/zsh-autosuggestions" \
  "fast-syntax-highlighting|https://github.com/zdharma-continuum/fast-syntax-highlighting" \
  "fzf-tab|https://github.com/Aloxaf/fzf-tab"
do
  name="${plug%%|*}"
  url="${plug##*|}"
  dir="$OHMYZSH_CUSTOM/plugins/$name"
  if [[ ! -d "$dir" ]]; then
    echo "  git    cloning $name"
    GIT_TERMINAL_PROMPT=0 git -c http.lowSpeedLimit=1000 -c http.lowSpeedTime=10 \
      clone "$url" "$dir" 2>/dev/null || echo "  FAIL   could not clone $name"
  fi
done

# Cleanup
[[ -d $HOME/.config/oh-my-zsh ]] && rm -rf "$HOME/.config/oh-my-zsh"