// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: 2025 ai-ad4 and the FreePDFEditor contributors
//
// Spike C main: grow an embedded subset font with a new glyph (§14 step 6)
// and report whether the growth produces a valid, renderable glyph.
//
// Usage:
//   spike_c_subset_growth [font_path]
//
// Defaults to DejaVu Sans if no font is given. Exit 0 if the grown subset
// contains and can render the new glyph (U+03A9) and the original subset did
// not (i.e. growth actually added something).

#include "SubsetGrowth.h"
#include "../common/SpikeRunner.h"

#include <cstdio>
#include <cstdlib>
#include <string>

int main(int argc, char** argv)
{
    const std::string font_path = (argc >= 2) ? argv[1]
        : "/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf";

    auto r = freepdfeditor::spike::c::grow_subset(font_path);

    freepdfeditor::spike::SpikeResult sr{};
    sr.spike = "C";
    sr.name = "hb-subset growth of an embedded subset font";
    sr.total = 1;
    sr.passed = r.ok ? 1 : 0;
    sr.failed = r.ok ? 0 : 1;
    sr.errored = (!r.ok && !r.error.empty() && r.error.find("failed") != std::string::npos) ? 1 : 0;
    sr.metric_name = "new_glyph_renders";
    sr.metric_value = r.ok ? 1.0 : 0.0;
    sr.target = 1.0;
    sr.gate_met = r.ok;
    sr.notes = "font=" + font_path +
        " original_glyphs=" + std::to_string(r.original_glyph_count) +
        " grown_glyphs=" + std::to_string(r.grown_glyph_count) +
        " original_bytes=" + std::to_string(r.original_font_bytes) +
        " grown_bytes=" + std::to_string(r.grown_font_bytes) +
        " new_glyph_present=" + (r.new_glyph_present ? "yes" : "no") +
        " new_glyph_renders=" + (r.new_glyph_renders ? "yes" : "no") +
        (!r.error.empty() ? " error=" + r.error : "") +
        "; §4.2 requires growing produces a NEW font (original untouched)";
    return freepdfeditor::spike::emit_json_report(sr);
}