#!/usr/bin/env bash

#

# Pre-commit hook that runs CI-equivalent checks locally.

# Classifies staged files by type and only runs relevant make

# targets. Falls back to the full `make pre-commit` when the

# Makefile changed or CODER_HOOK_RUN_ALL=1 is set.

#

# Installation (worktree-compatible):

#

# git config core.hooksPath scripts/githooks

#

# Bypass: git commit --no-verify

set -euo pipefail

cd "$(git rev-parse --show-toplevel)"

# Unset all repo-local Git env vars, not just GIT_DIR. In linked

# worktrees the hook inherits variables like GIT_COMMON_DIR and

# GIT_INDEX_FILE that confuse child processes (notably Go's VCS

# stamping, which shells out to git and gets exit status 128).

# Process substitution (not a pipe) so unset runs in the current shell.

while IFS= read -r var; do

unset "$var"

done < <(git rev-parse --local-env-vars)

# In linked worktrees, set worktree-scoped hooksPath to override shared config.

if [[ "$(git rev-parse --git-dir)" != "$(git rev-parse --git-common-dir)" ]]; then

git config --worktree core.hooksPath scripts/githooks

fi

if [[ ${CODER_HOOK_RUN_ALL:-} == 1 ]]; then

exec make pre-commit

fi

staged=$(git diff --cached --name-only --diff-filter=d)

if [[ -z $staged ]]; then

echo "pre-commit: no staged changes, skipping"

exit 0

fi

# If Go, TS, or build-system files changed, run the full

# pre-commit. Otherwise run the lightweight target that

# covers everything except gen, Go/TS fmt+lint, and binary build.

if echo "$staged" | grep -qE '\.(go|ts|tsx|sql|proto)$|^go\.(mod|sum)$|^site/|^Makefile$'; then

exec make pre-commit

fi

exec make pre-commit-light