#!/usr/bin/env bash
# One-time developer setup (Linux / macOS):
#   - verifies required tools
#   - installs vcpkg if VCPKG_ROOT is not set
#   - pins the vcpkg dependency baseline in vcpkg.json
set -euo pipefail

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

echo ">> Checking required tools"
missing=0
for tool in git cmake ninja; do
    if ! command -v "${tool}" >/dev/null 2>&1; then
        echo "   MISSING: ${tool}" >&2
        missing=1
    fi
done
if [[ "${missing}" -ne 0 ]]; then
    echo "ERROR: install the missing tools and re-run." >&2
    exit 1
fi
if ! command -v c++ >/dev/null 2>&1 && ! command -v clang++ >/dev/null 2>&1; then
    echo "WARNING: no C++ compiler found on PATH (need GCC 13+ or Clang 16+ for C++23)." >&2
fi

echo ">> Setting up vcpkg"
if [[ -z "${VCPKG_ROOT:-}" ]]; then
    if [[ ! -d "${REPO_ROOT}/vcpkg" ]]; then
        echo "   Cloning vcpkg into ./vcpkg"
        git clone https://github.com/microsoft/vcpkg.git "${REPO_ROOT}/vcpkg"
    fi
    "${REPO_ROOT}/vcpkg/bootstrap-vcpkg.sh" -disableMetrics
    export VCPKG_ROOT="${REPO_ROOT}/vcpkg"
    echo "   VCPKG_ROOT is not set in your environment."
    echo "   Add this to your shell profile (~/.bashrc, ~/.zshrc):"
    echo "       export VCPKG_ROOT=\"${REPO_ROOT}/vcpkg\""
else
    echo "   Using VCPKG_ROOT=${VCPKG_ROOT}"
fi
VCPKG_EXE="${VCPKG_ROOT}/vcpkg"

echo ">> Pinning the vcpkg dependency baseline"
if grep -q '"builtin-baseline"' vcpkg.json; then
    echo "   builtin-baseline already present — leaving it pinned."
else
    "${VCPKG_EXE}" x-update-baseline --add-initial-baseline
    echo "   Added builtin-baseline to vcpkg.json. Commit this change."
fi

echo ""
echo ">> Bootstrap complete. Next steps:"
echo "     cmake --preset linux-debug      # or macos-debug"
echo "     cmake --build --preset linux-debug"
echo "     ctest --preset linux-debug"