#!/usr/bin/env bash
# Pre-commit checks mirroring the CI checks that are fast enough to run on
# every commit (justfile "lint" + "type-check"; pytest and pip check are not
# run here). Only staged Python files are checked.
#
# Install with: just install-hooks

set -euo pipefail

# Prefer the repo virtualenv, fall back to whatever python is on PATH
PYTHON="venv/bin/python"
if [ ! -x "$PYTHON" ]; then
    PYTHON="python"
fi
if ! command -v "$PYTHON" >/dev/null 2>&1; then
    echo "pre-commit: no python interpreter found, skipping checks" >&2
    exit 0
fi

# Staged .py files (deletions excluded)
mapfile -t staged < <(git diff --cached --name-only --diff-filter=d -- '*.py')
if [ ${#staged[@]} -eq 0 ]; then
    exit 0
fi

status=0

echo "pre-commit: ruff check"
"$PYTHON" -m ruff check --exit-non-zero-on-fix "${staged[@]}" || status=1

echo "pre-commit: ruff format --check"
"$PYTHON" -m ruff format --check --diff "${staged[@]}" || status=1

# mypy is configured with files = ["gns3server"] in pyproject.toml, i.e. CI
# never type-checks tests: only pass staged files from that package.
mypy_targets=()
for f in "${staged[@]}"; do
    case "$f" in
        gns3server/*) mypy_targets+=("$f") ;;
    esac
done

if [ ${#mypy_targets[@]} -gt 0 ]; then
    echo "pre-commit: mypy"
    "$PYTHON" -m mypy "${mypy_targets[@]}" || status=1
fi

if [ "$status" -ne 0 ]; then
    echo ""
    echo "pre-commit: checks failed. Fix the issues above (try 'just format')," >&2
    echo "or bypass with: git commit --no-verify" >&2
fi

exit "$status"