#!/usr/bin/env bash

set -euo pipefail

REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$REPO_ROOT"

MODE="default"
CHECKS=()

usage() {
    cat <<'EOF'
Usage: scripts/lint.sh [check ...] [--hook|--ci]

Checks:
    format
    cppcheck
    actionlint

Modes:
    --hook   Run format --check --git
    --ci     Run format --check plus any available linters

Default:
    format --check
EOF
}

while [[ $# -gt 0 ]]; do
    case "$1" in
        --hook)
            MODE="hook"
            shift
            ;;
        --ci)
            MODE="ci"
            shift
            ;;
        -h|--help)
            usage
            exit 0
            ;;
        --*)
            printf 'Unknown option: %s\n' "$1" >&2
            usage >&2
            exit 2
            ;;
        *)
            CHECKS+=("$1")
            shift
            ;;
    esac
done

run_format() {
    "$REPO_ROOT/scripts/format-code.sh" --check "$@"
}

run_cppcheck() {
    if command -v cppcheck >/dev/null 2>&1; then
        "$REPO_ROOT/scripts/check-quality.sh"
    else
        printf 'cppcheck not installed; skipping\n'
    fi
}

run_actionlint() {
    if ! command -v actionlint >/dev/null 2>&1; then
        printf 'actionlint not installed; skipping\n'
        return 0
    fi
    if [[ ! -d "$REPO_ROOT/.github/workflows" ]]; then
        printf 'No GitHub workflows found; skipping actionlint\n'
        return 0
    fi
    actionlint
}

run_check() {
    case "$1" in
        format)
            shift
            run_format "$@"
            ;;
        cppcheck)
            run_cppcheck
            ;;
        actionlint)
            run_actionlint
            ;;
        *)
            printf 'Unknown check: %s\n' "$1" >&2
            exit 2
            ;;
    esac
}

if [[ "$MODE" == "hook" ]]; then
    run_check format --git
    exit 0
fi

if [[ "$MODE" == "ci" ]]; then
    run_check format
    run_check cppcheck
    run_check actionlint
    exit 0
fi

if [[ ${#CHECKS[@]} -eq 0 ]]; then
    run_check format
    exit 0
fi

for check in "${CHECKS[@]}"; do
    run_check "$check"
done