#!/usr/bin/env bash

set -euo pipefail

mode="${1:-code}"

base_sha="${2:-${BASE_SHA:-}}"

head_sha="${3:-${HEAD_SHA:-}}"

if [ -z "${GITHUB_OUTPUT:-}" ]; then

echo "GITHUB_OUTPUT is not set." >&2

exit 1

fi

if [ -z "$head_sha" ]; then

head_sha="$(git rev-parse HEAD 2>/dev/null || true)"

fi

if [ -z "$base_sha" ]; then

if ! git rev-parse --verify origin/main >/dev/null 2>&1; then

git fetch --no-tags --depth=1 origin main || true

fi

if git rev-parse --verify origin/main >/dev/null 2>&1 && [ -n "$head_sha" ]; then

base_sha="$(git merge-base origin/main "$head_sha" 2>/dev/null || true)"

fi

fi

if [ -z "$base_sha" ] || [ -z "$head_sha" ]; then

echo "run=true" >> "$GITHUB_OUTPUT"

exit 0

fi

if [ "$base_sha" = "0000000000000000000000000000000000000000" ]; then

echo "run=true" >> "$GITHUB_OUTPUT"

exit 0

fi

if ! git cat-file -e "$base_sha" 2>/dev/null; then

git fetch --no-tags --depth=1 origin "$base_sha" || true

fi

if ! git cat-file -e "$base_sha" 2>/dev/null; then

echo "run=true" >> "$GITHUB_OUTPUT"

exit 0

fi

changed_files=$(git diff --name-only "$base_sha" "$head_sha" || true)

case "$mode" in

code)

pattern='^(src/|tests/|examples/|pyproject.toml$|uv.lock$|Makefile$)'

;;

docs)

pattern='^(docs/|mkdocs.yml$)'

;;

*)

pattern="$mode"

;;

esac

if echo "$changed_files" | grep -Eq "$pattern"; then

echo "run=true" >> "$GITHUB_OUTPUT"

else

echo "run=false" >> "$GITHUB_OUTPUT"

fi