#!/bin/sh
# Pre-commit hook for nescript
# Install: cp scripts/pre-commit .git/hooks/pre-commit && chmod +x .git/hooks/pre-commit

set -e

echo "Running pre-commit checks..."

echo "  Checking formatting..."
cargo fmt --all -- --check

echo "  Running clippy..."
cargo clippy --all-targets -- -D warnings

echo "  Running tests..."
cargo test --all-targets

# Committed ROMs must match their .ne sources — the compiler is
# deterministic, so any example whose on-disk .nes differs from a
# fresh build means someone edited the .ne file but forgot to
# rebuild. Rebuild each to a tmp path and fail if any differ, then
# point the user at the exact `cargo run` command to fix it.
echo "  Checking committed ROMs match .ne sources..."
cargo build --release --quiet
tmp=$(mktemp -d)
trap 'rm -rf "$tmp"' EXIT
stale=0
for f in examples/*.ne; do
    name=$(basename "$f" .ne)
    ./target/release/nescript build "$f" --output "$tmp/$name.nes" >/dev/null
    if ! cmp -s "examples/$name.nes" "$tmp/$name.nes"; then
        echo "    STALE: examples/$name.nes"
        echo "           rerun: cargo run --release -- build $f"
        stale=1
    fi
done
if [ $stale -ne 0 ]; then
    echo "one or more committed ROMs are out of date"
    exit 1
fi

echo "All pre-commit checks passed."