#include "vde/brep/tolerance.h"
#include "vde/brep/brep.h"

namespace vde::brep {

// Global tolerance config
static ToleranceConfig g_global_tolerance;

const ToleranceConfig& ToleranceConfig::global() {
    return g_global_tolerance;
}

void ToleranceConfig::set_global(const ToleranceConfig& cfg) {
    g_global_tolerance = cfg;
}

double model_tolerance(const BrepModel& body) {
    auto bb = body.bounds();
    if (bb.min().x() > bb.max().x()) return 1e-6;

    double extent = bb.extent().norm();
    return adaptive_tolerance(extent);
}

// ── ToleranceChain ──

void ToleranceChain::push(const std::string& op_name, double tol) {
    steps_.emplace_back(op_name, tol);
}

double ToleranceChain::cumulative() const {
    double sum_sq = 0.0;
    for (auto& [_, tol] : steps_) {
        sum_sq += tol * tol;
    }
    return std::sqrt(sum_sq);
}

double ToleranceChain::max_step() const {
    double m = 0.0;
    for (auto& [_, tol] : steps_) {
        m = std::max(m, tol);
    }
    return m;
}

} // namespace vde::brep