#! /usr/bin/env bash

# This script wraps pip to run `asdf reshim` after installs and uninstalls.
# Any other cases are passed-through to pip.
#
# Inspired by the npm shim: https://github.com/asdf-vm/asdf-nodejs/blob/b2d06a768d9a14186db72/shims/npm

set -euo pipefail

this_dir=$(dirname "${BASH_SOURCE[0]}")
this_dir=$(cd "$this_dir" && pwd -P)  # Normalizes the directory; see https://stackoverflow.com/a/7666/2308068
plugin_name=$(basename "$(dirname "$this_dir")")

should_reshim() {
  if [ "${ASDF_PYTHON_SKIP_RESHIM:-}" ]; then
    return 1
  fi

  for arg; do
    case "$arg" in
      install|uninstall)
        return 0
      ;;
    esac
  done

  return 1
}

resolve_pip() {
  local pip_location="${ASDF_PYTHON_CANON_PIP_PATH:-$(search_pip_bin)}"

  if ! [ "$pip_location" ]; then
    echo "asdf-python couldn't find a suitable pip executable"
    echo "This is probably a problem with the plugin, please report this issue"
    exit 1
  fi

  echo "$pip_location"
}

search_pip_bin() {
  local probably_pip="$(asdf where python)/bin/pip"

  if [ -x "$probably_pip" ]; then
    echo "$probably_pip"
    return 0
  fi

  return 1
}

wrap_pip() {
  local pip=$(resolve_pip)

  if should_reshim "$@"; then
    "$pip" "$@"
    echo "Reshimming asdf $plugin_name..."
    asdf reshim "$plugin_name"
  else
    exec "$pip" "$@"
  fi
}

wrap_pip "$@"