#include "app_base.h"
#include "imgui.h"

#include "core/fullscreen_window.h"
#include "core/app_about.h"
#include "core/app_settings.h"
#include "core/panel_menu.h"
#include "core/button.h"
#include "core/tokens.h"

#include "viz/graph_types.h"
#include "viz/graph_viewport.h"
#include "viz/graph_renderer.h"
#include "viz/graph_force_layout.h"
#include "viz/graph_force_layout_gpu.h"
#include "viz/graph_layouts.h"
#include "viz/graph_labels.h"
#include "viz/graph_icons.h"
#include "viz/graph_sources.h"

#include "data.h"
#include "views.h"
#include "types_registry.h"
#include "layout_store.h"
#include "entity_ops.h"

#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <chrono>
#include <string>

// ----------------------------------------------------------------------------
// Estado global de la app
// ----------------------------------------------------------------------------

static GraphData              g_graph{};
static GraphViewportState     g_viewport;
static ge::AppState           g_app;

static ge::InputArgs          g_input;
static std::string            g_input_path;       // copia para que .uri sea estable
static std::string            g_types_path;
static std::string            g_layout_initial;   // --layout flag
static uint64_t               g_graph_hash = 0;
static bool                   g_loaded = false;

// Force layout GPU context (lazy init).
static ForceLayoutGPU*        g_gpu_ctx   = nullptr;
static bool                   g_gpu_dirty = true;

// Icon atlas (de types.yaml)
static IconAtlas*             g_atlas       = nullptr;
static bool                   g_atlas_bound = false;

// Para detectar primera invocacion de viewport (necesitamos el renderer creado)
static bool                   g_first_render = true;

// FPS estimate
static auto                   g_last_frame = std::chrono::steady_clock::now();
static int                    g_frames_acc = 0;
static auto                   g_fps_timer  = std::chrono::steady_clock::now();

// Label policy
static graph::LabelPolicy     g_label_policy;

// Indice user_data -> sql id (rebuild en cada load).
static ge::EntityIndex        g_idx;

// ----------------------------------------------------------------------------
// Helpers
// ----------------------------------------------------------------------------

static int layout_name_to_index(const std::string& s) {
    if (s == "force")        return 0;
    if (s == "grid")         return 1;
    if (s == "circular")     return 2;
    if (s == "radial")       return 3;
    if (s == "hierarchical") return 4;
    if (s == "fixed")        return 5;
    return -1;
}

static void apply_static_layout(int mode) {
    if (g_graph.node_count == 0) return;
    switch (mode) {
        case 1: graph::layout_grid(g_graph, 20.0f); break;
        case 2: graph::layout_circular(g_graph, 200.0f); break;
        case 3: graph::layout_radial(g_graph, 0, 80.0f); break;
        case 4: graph::layout_hierarchical(g_graph, 0, 120.0f, 60.0f); break;
        case 5: graph::layout_fixed(g_graph); break;
        case 0: default: break; // force: no-op (lo mueve el bucle)
    }
    g_gpu_dirty = true;
    if (mode != 0) {
        g_graph.update_bounds();
        graph_viewport_fit(g_graph, g_viewport);
    }
}

static bool load_input() {
    g_input.kind = ge::INPUT_OPERATIONS;
    g_input.uri  = g_input_path.c_str();

    graph::GraphLoadStats stats{};
    bool ok = ge::load_graph(g_input, &g_graph, &stats);
    if (!ok) {
        std::fprintf(stderr, "[graph_explorer] load failed: %s\n", stats.error_msg);
        return false;
    }
    std::fprintf(stdout,
        "[graph_explorer] loaded %d nodes, %d edges, %d types, %d rel_types from %s\n",
        stats.nodes_loaded, stats.edges_loaded,
        stats.types_discovered, stats.rel_types_discovered, g_input.uri);

    // types.yaml
    if (!g_types_path.empty()) {
        ge::ParsedTypes pt;
        std::string err;
        if (!ge::types_load_yaml(g_types_path.c_str(), &pt, &err)) {
            std::fprintf(stderr, "[graph_explorer] types.yaml: %s\n", err.c_str());
        } else {
            std::vector<uint16_t> codepoints = ge::apply_types_yaml(g_graph, pt);
            // Reset atlas — la prox vez que el viewport tenga renderer, se baja
            g_atlas_bound = false;
            if (g_atlas) { graph_icons_destroy(g_atlas); g_atlas = nullptr; }
            g_atlas = ge::build_icon_atlas(codepoints);
            std::fprintf(stdout,
                "[graph_explorer] types.yaml: %zu entities, %zu relations, %zu icons\n",
                pt.entities.size(), pt.relations.size(), codepoints.size());
        }
    }

    // Restablecer viewport state (preserva camara user-visible)
    g_viewport.selection.clear();
    g_viewport.hovered_node = -1;
    g_viewport.selected_node = -1;
    g_viewport.layout_running = true;
    g_viewport.layout_energy  = 0.0f;

    // Posicionar nodos: si todos tienen (x,y)=0, aplicar layout circular como
    // arranque (grafos cargados desde operations.db vienen sin posiciones).
    int zero_pos = 0;
    for (int i = 0; i < g_graph.node_count; ++i) {
        if (g_graph.nodes[i].x == 0.0f && g_graph.nodes[i].y == 0.0f) ++zero_pos;
    }
    if (zero_pos == g_graph.node_count) {
        graph::layout_circular(g_graph, 200.0f);
    }
    g_graph.update_bounds();

    // Indice user_data -> sql id (para CRUD desde menu contextual).
    ge::entity_index_build(g_input.uri, &g_idx);
    g_app.input_db_path = g_input.uri ? g_input.uri : "";

    // Cargar posiciones guardadas para este graph_hash
    g_graph_hash = ge::compute_graph_hash(g_input.uri);
    int restored = ge::layout_store_load(g_graph_hash, g_graph);
    if (restored > 0) {
        std::fprintf(stdout, "[graph_explorer] restored %d node positions from layout store\n", restored);
        g_graph.update_bounds();
    }

    // Vista inicial
    graph_viewport_fit(g_graph, g_viewport);
    g_gpu_dirty = true;

    // App state — visibility por tipo
    g_app.graph    = &g_graph;
    g_app.viewport = &g_viewport;
    ge::views_reset_visibility(g_app);
    ge::views_apply_visibility(g_app);

    // --layout inicial (si llego del CLI)
    int idx = layout_name_to_index(g_layout_initial);
    if (idx >= 0) {
        g_app.layout_mode = idx;
        apply_static_layout(idx);
    }

    g_loaded = true;
    return true;
}

static void run_force_step() {
    if (!g_viewport.layout_running) return;
    if (g_app.layout_mode != 0) return; // force solo en mode 0

    ForceLayoutConfig cfg;
    cfg.repulsion  = g_app.repulsion;
    cfg.attraction = g_app.attraction;
    cfg.gravity    = g_app.gravity;
    cfg.iterations = 1;

    if (g_app.use_gpu) {
        if (!g_gpu_ctx) {
            g_gpu_ctx = graph_force_layout_gpu_create(g_graph.node_count + 1024,
                                                       g_graph.edge_count + 1024);
            g_gpu_dirty = true;
        }
        if (g_gpu_ctx) {
            if (g_gpu_dirty) {
                graph_force_layout_gpu_upload(g_gpu_ctx, g_graph);
                g_gpu_dirty = false;
            }
            g_viewport.layout_energy = graph_force_layout_gpu_step(g_gpu_ctx, cfg);
            graph_force_layout_gpu_readback(g_gpu_ctx, g_graph, /*include_velocities=*/true);
        } else {
            g_app.use_gpu = false;
            g_viewport.layout_energy = graph_force_layout_step(g_graph, cfg);
        }
    } else {
        g_viewport.layout_energy = graph_force_layout_step(g_graph, cfg);
    }

    // Auto-pause heuristica: si energia/nodo es muy baja durante muchos
    // frames, apagar simulacion. El usuario puede reanudarla con el toggle.
    static int low = 0;
    const float k_pause_per_node = 0.001f;
    const int   k_pause_after    = 60;
    float per = g_graph.node_count > 0
                    ? g_viewport.layout_energy / (float)g_graph.node_count
                    : 0.0f;
    if (per < k_pause_per_node) ++low;
    else                         low = 0;
    if (graph_force_layout_should_pause(low, k_pause_after)) {
        g_viewport.layout_running = false;
        low = 0;
    }
}

// FPS estimate sintetico (por segundo).
static void update_fps() {
    using namespace std::chrono;
    auto now = steady_clock::now();
    ++g_frames_acc;
    if (duration_cast<milliseconds>(now - g_fps_timer).count() >= 1000) {
        g_app.fps_estimate = g_frames_acc;
        g_frames_acc = 0;
        g_fps_timer = now;
    }
    g_last_frame = now;
}

// ----------------------------------------------------------------------------
// Context menu callback (right-click sobre nodo)
// ----------------------------------------------------------------------------

static void on_context_menu_cb(int node_idx, ImVec2 /*screen_pos*/, void* /*user*/) {
    g_app.ctx_node = node_idx;
    g_app.ctx_open_request = true;
    if (node_idx >= 0 && node_idx < g_graph.node_count) {
        const GraphNode& n = g_graph.nodes[node_idx];
        if (n.type_id < (uint16_t)g_graph.type_count && g_graph.types[n.type_id].name) {
            std::snprintf(g_app.ctx_new_type, sizeof(g_app.ctx_new_type), "%s",
                          g_graph.types[n.type_id].name);
        } else {
            g_app.ctx_new_type[0] = 0;
        }
    }
}

// Lista de tipos disponibles para "Change type" — se construye desde el grafo
// activo. Si esta vacia, se usa una lista por defecto.
static const char* k_default_types[] = {
    "text", "person", "organization", "email", "ip_address", "domain",
    "url", "phone", "crypto_wallet", "malware", "vulnerability",
};
constexpr int k_default_types_n = (int)(sizeof(k_default_types) / sizeof(k_default_types[0]));

static void render_context_menu() {
    if (g_app.ctx_open_request) {
        ImGui::OpenPopup("##node_ctx");
        g_app.ctx_open_request = false;
    }
    if (!ImGui::BeginPopup("##node_ctx")) return;

    int idx = g_app.ctx_node;
    if (idx < 0 || idx >= g_graph.node_count) {
        ImGui::TextDisabled("(no node)");
        ImGui::EndPopup();
        return;
    }
    const GraphNode& n = g_graph.nodes[idx];
    const char* lbl = graph::graph_label(&g_graph, n.label_idx);
    ImGui::TextDisabled("%s", lbl && *lbl ? lbl : "(unnamed)");
    ImGui::Separator();

    if (ImGui::BeginMenu("Change type")) {
        // Tipos del grafo actual
        for (int i = 0; i < g_graph.type_count; ++i) {
            const char* name = g_graph.types[i].name;
            if (!name) continue;
            if (ImGui::MenuItem(name)) {
                std::snprintf(g_app.ctx_new_type, sizeof(g_app.ctx_new_type), "%s", name);
                g_app.want_change_type = true;
            }
        }
        ImGui::Separator();
        // Defaults extra (por si no estan presentes en el grafo cargado)
        for (int i = 0; i < k_default_types_n; ++i) {
            if (ImGui::MenuItem(k_default_types[i])) {
                std::snprintf(g_app.ctx_new_type, sizeof(g_app.ctx_new_type), "%s",
                              k_default_types[i]);
                g_app.want_change_type = true;
            }
        }
        ImGui::EndMenu();
    }

    if (ImGui::MenuItem("Duplicate")) {
        g_app.want_duplicate_node = true;
    }
    if (ImGui::MenuItem("Delete")) {
        g_app.want_delete_node = true;
    }

    ImGui::Separator();
    if (ImGui::BeginMenu("Run enricher")) {
        ImGui::TextDisabled("(coming soon — issues 0001/0002/0003)");
        ImGui::EndMenu();
    }

    ImGui::EndPopup();
}

// ----------------------------------------------------------------------------
// Label callback
// ----------------------------------------------------------------------------

static const char* get_label_cb(int node_idx, void* /*user*/) {
    if (node_idx < 0 || node_idx >= g_graph.node_count) return "";
    const GraphNode& n = g_graph.nodes[node_idx];
    return graph::graph_label(&g_graph, n.label_idx);
}

// ----------------------------------------------------------------------------
// Render
// ----------------------------------------------------------------------------

static fn_ui::PanelToggle g_panels[] = {
    {"Viewport",  nullptr, &g_app.panel_viewport},
    {"Legend",    nullptr, &g_app.panel_legend},
    {"Inspector", nullptr, &g_app.panel_inspector},
    {"Stats",     nullptr, &g_app.panel_stats},
};

static void render() {
    update_fps();

    // No tenemos menu propio — fn::run_app llamara al app_menubar via panels[].

    if (!g_loaded) {
        fullscreen_window_begin("##empty");
        ImGui::TextColored(ImVec4(1, 0.7f, 0.3f, 1),
                           "graph_explorer — no input loaded");
        ImGui::Spacing();
        ImGui::TextWrapped(
            "Usage: graph_explorer [<operations.db>] [--input operations <path>] "
            "[--types <yaml>] [--layout <name>]");
        ImGui::Spacing();
        ge::views_open_modal(g_app);
        if (g_app.want_open_file) {
            g_input_path = g_app.open_buf;
            g_app.want_open_file = false;
            load_input();
        }
        if (fn_ui::button("Open file...", fn_ui::ButtonVariant::Primary)) {
            g_app.show_open_modal = true;
        }
        fullscreen_window_end();
        return;
    }

    // Dockspace host: ocupa el area de trabajo bajo la menubar y permite
    // que cualquier ventana (Viewport, Legend, Inspector, Stats, Table) se
    // arrastre a un lateral o pestañas dentro de la app.
    ImGuiViewport* vp = ImGui::GetMainViewport();
    {
        ImGui::SetNextWindowPos (vp->WorkPos);
        ImGui::SetNextWindowSize(vp->WorkSize);
        ImGui::SetNextWindowViewport(vp->ID);
        ImGuiWindowFlags hostFlags =
            ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize |
            ImGuiWindowFlags_NoMove     | ImGuiWindowFlags_NoCollapse |
            ImGuiWindowFlags_NoBringToFrontOnFocus | ImGuiWindowFlags_NoNavFocus |
            ImGuiWindowFlags_NoBackground | ImGuiWindowFlags_NoDocking |
            ImGuiWindowFlags_NoSavedSettings;
        ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0, 0));
        ImGui::Begin("##dock_host", nullptr, hostFlags);
        ImGui::PopStyleVar();
        ImGui::DockSpace(ImGui::GetID("##dockspace"), ImVec2(0, 0),
                         ImGuiDockNodeFlags_PassthruCentralNode);
        ImGui::End();
    }

    // Toolbar superior — usa una ventana sin scroll y sin titulo
    ImGui::SetNextWindowPos(vp->WorkPos);
    ImGui::SetNextWindowSize(ImVec2(vp->WorkSize.x, 44.0f));
    ImGui::Begin("##toolbar", nullptr,
                 ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize |
                 ImGuiWindowFlags_NoMove     | ImGuiWindowFlags_NoCollapse |
                 ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoScrollWithMouse |
                 ImGuiWindowFlags_NoSavedSettings);
    ge::views_toolbar(g_app);
    ImGui::End();

    // Modals
    ge::views_open_modal(g_app);
    ge::views_filters_modal(g_app);

    // Si el usuario aplico nuevo layout en la toolbar
    if (g_app.apply_layout_tick > 0) {
        apply_static_layout(g_app.layout_mode);
        g_app.apply_layout_tick = 0;
    }

    // Triggers desde la toolbar
    if (g_app.want_fit) {
        graph_viewport_fit(g_graph, g_viewport);
        g_app.want_fit = false;
    }
    if (g_app.want_reload) {
        g_app.want_reload = false;
        graph::GraphLoadStats stats{};
        if (ge::reload_graph(g_input, &g_graph, &stats)) {
            ge::views_reset_visibility(g_app);
            ge::views_apply_visibility(g_app);
            g_graph.update_bounds();
            graph_viewport_fit(g_graph, g_viewport);
            int restored = ge::layout_store_load(g_graph_hash, g_graph);
            if (restored > 0) g_graph.update_bounds();
            g_atlas_bound = false; // re-bind atlas tras reload
            g_gpu_dirty = true;
        }
    }
    if (g_app.want_save_layout) {
        int n = ge::layout_store_save(g_graph_hash, g_graph);
        std::fprintf(stdout, "[graph_explorer] saved %d node positions\n", n);
        g_app.want_save_layout = false;
    }
    if (g_app.want_open_file) {
        g_input_path = g_app.open_buf;
        g_app.want_open_file = false;
        // Cleanup viejo grafo
        graph::graph_free(&g_graph);
        load_input();
    }

    // ---- Mutaciones (add/delete/duplicate/change_type) ----
    auto reload_after_mutation = [&]() {
        graph::GraphLoadStats stats{};
        if (ge::reload_graph(g_input, &g_graph, &stats)) {
            ge::entity_index_build(g_input.uri, &g_idx);
            ge::views_reset_visibility(g_app);
            ge::views_apply_visibility(g_app);
            g_graph.update_bounds();
            int restored = ge::layout_store_load(g_graph_hash, g_graph);
            if (restored > 0) g_graph.update_bounds();
            g_atlas_bound = false;
            g_gpu_dirty = true;
        }
    };

    if (g_app.want_add_node && g_app.add_buf[0]) {
        char new_id[80];
        if (ge::entity_insert(g_app.input_db_path.c_str(), g_app.add_buf,
                              /*type_ref=*/nullptr, new_id, sizeof(new_id))) {
            std::fprintf(stdout, "[graph_explorer] added entity %s\n", new_id);
            g_app.add_buf[0] = 0;
            reload_after_mutation();
        } else {
            std::fprintf(stderr, "[graph_explorer] add_entity failed\n");
        }
        g_app.want_add_node = false;
    }

    auto ctx_id = [&]() -> const char* {
        if (g_app.ctx_node < 0 || g_app.ctx_node >= g_graph.node_count) return nullptr;
        return ge::entity_index_lookup(g_idx, g_graph.nodes[g_app.ctx_node].user_data);
    };

    if (g_app.want_delete_node) {
        if (const char* id = ctx_id()) {
            if (ge::entity_delete(g_app.input_db_path.c_str(), id)) {
                std::fprintf(stdout, "[graph_explorer] deleted entity %s\n", id);
                reload_after_mutation();
            }
        }
        g_app.want_delete_node = false;
        g_app.ctx_node = -1;
    }

    if (g_app.want_duplicate_node) {
        if (const char* id = ctx_id()) {
            char new_id[80];
            if (ge::entity_duplicate(g_app.input_db_path.c_str(), id,
                                      new_id, sizeof(new_id))) {
                std::fprintf(stdout, "[graph_explorer] duplicated %s -> %s\n", id, new_id);
                reload_after_mutation();
            }
        }
        g_app.want_duplicate_node = false;
    }

    if (g_app.want_change_type && g_app.ctx_new_type[0]) {
        if (const char* id = ctx_id()) {
            if (ge::entity_update_type(g_app.input_db_path.c_str(), id, g_app.ctx_new_type)) {
                std::fprintf(stdout, "[graph_explorer] %s -> type %s\n", id, g_app.ctx_new_type);
                reload_after_mutation();
            }
        }
        g_app.want_change_type = false;
    }

    // Posiciones iniciales razonables; el usuario puede moverlas y se
    // persiste via imgui.ini.
    const float top   = vp->WorkPos.y + 44.0f;
    const float W     = vp->WorkSize.x;
    const float H     = vp->WorkSize.y - 44.0f;
    const float lw    = 240.0f;   // Legend
    const float rw    = 320.0f;   // Inspector / Stats
    const float sh    = H * 0.55f; // Inspector altura

    // Viewport — ventana central
    if (g_app.panel_viewport) {
        ImGui::SetNextWindowPos (ImVec2(vp->WorkPos.x + lw, top), ImGuiCond_FirstUseEver);
        ImGui::SetNextWindowSize(ImVec2(W - lw - rw, H),          ImGuiCond_FirstUseEver);
        if (ImGui::Begin("Viewport", &g_app.panel_viewport)) {
            run_force_step();

            GraphViewportCallbacks vp_cb{};
            vp_cb.on_context_menu = &on_context_menu_cb;
            graph_viewport("##gv", g_graph, g_viewport, ImVec2(0, 0), vp_cb);
            render_context_menu();

            // La primera vez que el viewport se dibuja, el renderer existe —
            // bind del atlas (si tenemos uno).
            if (!g_atlas_bound && g_viewport.renderer) {
                if (g_atlas) {
                    graph_renderer_set_icon_atlas(g_viewport.renderer,
                                                   graph_icons_texture(g_atlas),
                                                   graph_icons_uv_table(g_atlas),
                                                   graph_icons_count(g_atlas));
                }
                g_atlas_bound = true;
            }

            if (g_app.labels_enabled) {
                graph::graph_labels_draw(g_graph, g_viewport, g_label_policy,
                                          &get_label_cb, nullptr);
            }
        }
        ImGui::End();
    } else {
        // Sin ventana visible, igual avanzamos la simulacion para que al
        // reabrirla el grafo este actualizado.
        run_force_step();
    }

    // Legend — izquierda
    ImGui::SetNextWindowPos (ImVec2(vp->WorkPos.x, top), ImGuiCond_FirstUseEver);
    ImGui::SetNextWindowSize(ImVec2(lw, H),              ImGuiCond_FirstUseEver);
    ge::views_legend(g_app);

    // Inspector / Stats — derecha (apilados)
    ImGui::SetNextWindowPos (ImVec2(vp->WorkPos.x + W - rw, top), ImGuiCond_FirstUseEver);
    ImGui::SetNextWindowSize(ImVec2(rw, sh),                      ImGuiCond_FirstUseEver);
    ge::views_inspector(g_app);

    ImGui::SetNextWindowPos (ImVec2(vp->WorkPos.x + W - rw, top + sh), ImGuiCond_FirstUseEver);
    ImGui::SetNextWindowSize(ImVec2(rw, H - sh),                       ImGuiCond_FirstUseEver);
    ge::views_stats(g_app);

    g_first_render = false;
}

// ----------------------------------------------------------------------------
// CLI parsing
// ----------------------------------------------------------------------------

static void usage() {
    std::fprintf(stderr,
        "Usage: graph_explorer [<operations.db>]\n"
        "       graph_explorer --input operations <path>\n"
        "       graph_explorer --types <types.yaml>\n"
        "       graph_explorer --layout force|grid|circular|radial|hierarchical|fixed\n");
}

int main(int argc, char** argv) {
    for (int i = 1; i < argc; ++i) {
        const char* a = argv[i];
        if (std::strcmp(a, "--input") == 0 && i + 2 < argc) {
            const char* kind = argv[++i];
            const char* path = argv[++i];
            if (std::strcmp(kind, "operations") == 0) {
                g_input_path = path;
            } else {
                std::fprintf(stderr, "[graph_explorer] unsupported input kind: %s\n", kind);
                return 1;
            }
        } else if (std::strcmp(a, "--types") == 0 && i + 1 < argc) {
            g_types_path = argv[++i];
        } else if (std::strcmp(a, "--layout") == 0 && i + 1 < argc) {
            g_layout_initial = argv[++i];
        } else if (std::strcmp(a, "--help") == 0 || std::strcmp(a, "-h") == 0) {
            usage();
            return 0;
        } else if (a[0] == '-') {
            std::fprintf(stderr, "[graph_explorer] unknown flag: %s\n", a);
            usage();
            return 1;
        } else {
            // Positional: tratado como operations.db
            if (g_input_path.empty()) g_input_path = a;
        }
    }

    // SQLite store junto al exe.
    ge::layout_store_open("graph_explorer.db");

    // Si no llego --input/positional, intentar operations.db en el cwd
    // (mismo criterio que graph_explorer.db: relativo al directorio de ejecucion).
    if (g_input_path.empty()) {
        if (FILE* f = std::fopen("operations.db", "rb")) {
            std::fclose(f);
            g_input_path = "operations.db";
            std::fprintf(stdout, "[graph_explorer] using default ./operations.db\n");
        }
    }

    if (!g_input_path.empty()) {
        load_input();
    }

    fn_ui::about_window_set_info(
        "graph_explorer",
        "0.1.0",
        "Visor de grafos GPU-accelerated agnostico del backend. Lee operations.db de "
        "cualquier app del registry y permite explorar entidades/relaciones con "
        "shapes/iconos/layouts/filtros.");

    int rc = fn::run_app(
        {.title          = "graph_explorer",
         .width          = 1600,
         .height         = 1000,
         .viewports      = true,
         .panels         = g_panels,
         .panel_count    = sizeof(g_panels) / sizeof(g_panels[0]),
         .init_gl_loader = true},
        render);

    // Cleanup
    if (g_gpu_ctx) graph_force_layout_gpu_destroy(g_gpu_ctx);
    if (g_atlas)   graph_icons_destroy(g_atlas);
    graph_viewport_destroy(g_viewport);
    graph::graph_free(&g_graph);
    ge::layout_store_close();

    return rc;
}