#!/bin/bash

# Only the plugins are updated; the kickstart.nvim config itself is the user's to edit.
LAZY_DIR="${XDG_DATA_HOME:-$HOME/.local/share}/nvim/lazy"
PLUGIN_BACKUPS="${XDG_STATE_HOME:-$HOME/.local/state}/coredesktop/nvim-plugins"

is_installed() {
  command -v nvim &>/dev/null && [ -d "$LAZY_DIR/lazy.nvim" ]
}

# lazy.nvim won't update a plugin whose tracked files differ from its checkout
# (it checks with `git ls-files -d -m`). An interrupted update can leave a
# plugin like that, along with leftovers git won't overwrite, such as new files
# and half-cloned submodules (LuaSnip, 2026-10-20). Move such a plugin out of
# the way, so `Lazy! sync` installs it afresh; any edits made to it are in the
# copy. So is a plugin an earlier version of this step only stashed.
set_aside_broken_plugins() {
  local dir name dest
  for dir in "$LAZY_DIR"/*/; do
    dir="${dir%/}"
    [ -d "$dir/.git" ] || continue
    if [ -z "$(git -C "$dir" ls-files -d -m 2> /dev/null)" ] \
        && ! git -C "$dir" stash list 2> /dev/null | grep -q "Stashed by CoreDesktop's update"; then
      continue
    fi
    name="$(basename "$dir")"
    dest="$PLUGIN_BACKUPS/$name-$(date +%Y-%m-%d-%H%M%S)"
    mkdir -p "$PLUGIN_BACKUPS" && mv "$dir" "$dest" \
      && echo "  $name's files didn't match its version, so it will be installed again. The old copy is in $dest"
  done
}

run_update() {
  echo "Updating Neovim plugins..."
  set_aside_broken_plugins
  nvim --headless "+Lazy! sync" +qa
}