#!/bin/sh
# Pre-commit hook for Cortex CLI (OPTIMIZED)
# Only formats and checks CHANGED Rust files

set -e

echo "=== Pre-commit Hook (Optimized) ==="

# Get list of staged Rust files
STAGED_RS_FILES=$(git diff --cached --name-only --diff-filter=ACMR | grep '\.rs$' || true)

if [ -z "$STAGED_RS_FILES" ]; then
    echo "No Rust files staged, skipping checks."
    exit 0
fi

echo "Checking $(echo "$STAGED_RS_FILES" | wc -l | tr -d ' ') Rust file(s)..."

# Format only staged files with rustfmt directly (faster than cargo fmt)
echo "Running rustfmt on staged files..."
echo "$STAGED_RS_FILES" | xargs rustfmt --edition 2024 2>/dev/null || true

# Re-add formatted files
echo "$STAGED_RS_FILES" | xargs git add

# Quick clippy on changed crates only (find unique crate directories)
CHANGED_CRATES=$(echo "$STAGED_RS_FILES" | sed 's|/src/.*||' | sort -u | grep -v '^\.' || true)

if [ -n "$CHANGED_CRATES" ]; then
    echo "Running clippy --fix on changed crates..."
    for crate in $CHANGED_CRATES; do
        if [ -f "$crate/Cargo.toml" ]; then
            crate_name=$(basename "$crate")
            cargo clippy -p "$crate_name" --fix --allow-dirty --allow-staged 2>/dev/null || true
        fi
    done
    
    # Re-add any clippy fixes
    echo "$STAGED_RS_FILES" | xargs git add 2>/dev/null || true
fi

echo "=== Pre-commit passed! ==="