#!/bin/bash
# project-hygiene cleanup hook
# Runs after file edits to clean up temp files
# All output MUST have [project-hygiene] prefix

set -euo pipefail

PREFIX="[project-hygiene]"

# Read tool input from stdin (discard - we don't need it for cleanup)
cat > /dev/null

# Cooldown - skip if ran in last 60 seconds
# Using $PPID ties cooldown to the Claude session
LAST_RUN_FILE="/tmp/project-hygiene-${PPID}-last-run"
if [[ -f "$LAST_RUN_FILE" ]]; then
    LAST_RUN=$(cat "$LAST_RUN_FILE")
    NOW=$(date +%s)
    if (( NOW - LAST_RUN < 60 )); then
        exit 0
    fi
fi

PROJECT_ROOT="${PROJECT_ROOT:-.}"
DELETED_COUNT=0

# Silently delete temp files
for pattern in "*.tmp" "*.bak" "*.swp" "*~" ".DS_Store"; do
    while IFS= read -r -d '' file; do
        rm -f "$file" 2>/dev/null && ((DELETED_COUNT++)) || true
    done < <(find "$PROJECT_ROOT" -name "$pattern" -type f -print0 2>/dev/null || true)
done

# Only output if we deleted something
if [[ $DELETED_COUNT -gt 0 ]]; then
    echo "$PREFIX Cleaned $DELETED_COUNT temp files"
fi

# Record this run for cooldown
date +%s > "$LAST_RUN_FILE"

exit 0