#!/usr/bin/env bash
set -euo pipefail

# PATH shim for python/python3 — intercepts bare invocations and
# suggests the uv equivalent.  Works for both names via $0.
cmd="$(basename "$0")"

# Canonical rationale for the suggestion's shape (the README,
# setup-shims.sh, and python-shim.bats point here):
#
# Suggestions always use the exact name `python`, never `python3`: uv
# special-cases the `python` command (uv >= 0.4.0) and executes its resolved
# interpreter directly instead of a PATH lookup, so the suggested command
# works even outside a project, where `uv run python3` would resolve back
# to this shim.
#
# Arguments are requoted with %q so the suggestion stays runnable when they
# contain spaces or shell metacharacters (e.g. -c 'print(1+1)').
args=""
if (($#)); then
  args="$(printf ' %q' "$@")"
fi

case "${1:-}" in
  -m)
    case "${2:-}" in
      pip)
        echo "ERROR: \`$cmd -m pip\` is not supported. Use:" >&2
        echo "  uv add <package>       # add a dependency" >&2
        echo "  uv remove <package>    # remove a dependency" >&2
        ;;
      *)
        if (($# < 2)); then
          args=" -m <module>"
        fi
        echo "ERROR: Use \`uv run python$args\` instead of \`$cmd$args\`" >&2
        ;;
    esac
    ;;
  *)
    echo "ERROR: Use \`uv run python$args\` instead of \`$cmd$args\`" >&2
    ;;
esac

exit 1