// odr_console — lanzador GUI de funciones del registry para recolectar datos online.
// MVP: panel launcher + placeholders. Ver issue 0066.

#include "app_base.h"
#include "imgui.h"
#include "core/app_menubar.h"
#include "core/app_about.h"
#include "core/app_settings.h"
#include "core/icon_font.h"
#include "core/icons_tabler.h"
#include "core/tokens.h"
#include "core/logger.h"

#include "data_registry.h"
#include "data_collectors.h"
#include "runner.h"

#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <filesystem>
#include <sstream>
#include <string>
#include <vector>

static OdrRegistry g_registry;
static std::string g_db_path;
static std::string g_app_dir;        // dir de odr_console (collectors/, ops db)
static std::string g_python_exe;     // resolved al arrancar
static std::string g_registry_root;  // FN_REGISTRY_ROOT
static std::string g_ops_db_path;    // <app_dir>/operations.db

static char        g_search_buf[256] = "";
static std::vector<RegistryRow> g_results;
static int         g_selected = -1;

static std::vector<Collector> g_collectors;
static int                    g_coll_selected = -1;
static int                    g_coll_param_limit = 30;
static std::string            g_last_run_summary; // texto status del ultimo run
static bool                   g_running = false;

static void do_search() {
    g_results.clear();
    g_selected = -1;
    if (g_search_buf[0] == '\0') {
        registry_list_recent(g_registry, 50, g_results);
    } else {
        registry_search(g_registry, g_search_buf, 50, g_results);
    }
}

static bool g_show_launcher   = true;
static bool g_show_collectors = true;
static bool g_show_jobs       = true;
static bool g_show_datasets   = true;

static void run_selected_collector() {
    if (g_coll_selected < 0 ||
        g_coll_selected >= (int)g_collectors.size()) return;
    const Collector& c = g_collectors[g_coll_selected];
    if (!c.has_run) return;

    std::ostringstream ctx;
    ctx << "{"
        << "\"ops_db_path\":\"" << g_ops_db_path << "\","
        << "\"app_dir\":\""     << g_app_dir     << "\","
        << "\"registry_root\":\"" << g_registry_root << "\","
        << "\"params\":{\"limit\":" << g_coll_param_limit << "}"
        << "}";

    std::string tmp_dir = std::string(fn::local_path("runner_tmp"));
    g_running = true;
    auto res = odr::run_collector(g_python_exe, c.run_py, tmp_dir, ctx.str());
    g_running = false;

    std::ostringstream s;
    s << "exit=" << res.exit_code
      << "  ms=" << res.duration_ms
      << "\nstdout: " << res.stdout_str
      << "\nstderr (last):\n";
    // Solo ultimas 10 lineas de stderr para no inundar UI.
    std::vector<std::string> lines;
    std::istringstream ss(res.stderr_str);
    std::string ln;
    while (std::getline(ss, ln)) lines.push_back(ln);
    int start = (int)lines.size() - 10;
    if (start < 0) start = 0;
    for (int i = start; i < (int)lines.size(); ++i) s << lines[i] << "\n";
    g_last_run_summary = s.str();
}

static void draw_collectors() {
    if (!g_show_collectors) return;
    if (!ImGui::Begin(TI_PLAYER_PLAY " Collectors", &g_show_collectors)) {
        ImGui::End();
        return;
    }
    if (ImGui::Button("Refresh")) {
        std::string root = g_app_dir + "/collectors";
        collectors_discover(root, g_collectors);
        g_coll_selected = -1;
    }
    ImGui::SameLine();
    ImGui::TextDisabled("%zu collectors", g_collectors.size());

    if (g_collectors.empty()) {
        ImGui::TextDisabled("No collectors found in %s/collectors/",
                            g_app_dir.c_str());
        ImGui::End();
        return;
    }

    if (ImGui::BeginTable("##collectors", 3,
            ImGuiTableFlags_RowBg | ImGuiTableFlags_Borders |
            ImGuiTableFlags_Resizable)) {
        ImGui::TableSetupColumn("ID", ImGuiTableColumnFlags_WidthFixed, 180);
        ImGui::TableSetupColumn("Name", ImGuiTableColumnFlags_WidthFixed, 200);
        ImGui::TableSetupColumn("Description", ImGuiTableColumnFlags_WidthStretch);
        ImGui::TableHeadersRow();

        for (int i = 0; i < (int)g_collectors.size(); ++i) {
            const auto& c = g_collectors[i];
            ImGui::TableNextRow();
            ImGui::TableSetColumnIndex(0);
            bool sel = (i == g_coll_selected);
            if (ImGui::Selectable(c.id.c_str(), sel,
                                  ImGuiSelectableFlags_SpanAllColumns)) {
                g_coll_selected = i;
            }
            ImGui::TableSetColumnIndex(1);
            ImGui::TextUnformatted(c.name.c_str());
            ImGui::TableSetColumnIndex(2);
            ImGui::TextUnformatted(c.description.c_str());
        }
        ImGui::EndTable();
    }

    if (g_coll_selected >= 0 &&
        g_coll_selected < (int)g_collectors.size()) {
        const auto& c = g_collectors[g_coll_selected];
        ImGui::Separator();
        ImGui::Text("Selected: %s", c.id.c_str());
        ImGui::TextDisabled("%s", c.run_py.c_str());

        ImGui::PushItemWidth(120);
        ImGui::InputInt("limit", &g_coll_param_limit);
        ImGui::PopItemWidth();
        if (g_coll_param_limit < 1) g_coll_param_limit = 1;
        if (g_coll_param_limit > 500) g_coll_param_limit = 500;

        ImGui::BeginDisabled(g_running || !c.has_run);
        if (ImGui::Button(g_running ? "Running..." : (TI_PLAYER_PLAY " Run"))) {
            run_selected_collector();
        }
        ImGui::EndDisabled();
        if (!c.has_run) {
            ImGui::SameLine();
            ImGui::TextDisabled("(missing run.py)");
        }
    }

    if (!g_last_run_summary.empty()) {
        ImGui::Separator();
        ImGui::TextUnformatted("Last run:");
        ImGui::BeginChild("##run_summary", ImVec2(0, 200), true);
        ImGui::TextUnformatted(g_last_run_summary.c_str());
        ImGui::EndChild();
    }

    ImGui::End();
}

static void draw_launcher() {
    if (!g_show_launcher) return;
    if (!ImGui::Begin(TI_SEARCH " Launcher", &g_show_launcher)) {
        ImGui::End();
        return;
    }

    ImGui::PushItemWidth(-1);
    if (ImGui::InputTextWithHint("##search", "Search functions/pipelines (FTS5)...",
                                 g_search_buf, sizeof(g_search_buf),
                                 ImGuiInputTextFlags_EnterReturnsTrue)) {
        do_search();
    }
    ImGui::PopItemWidth();

    if (ImGui::Button("Search")) do_search();
    ImGui::SameLine();
    ImGui::TextDisabled("%zu hits", g_results.size());

    ImGui::Separator();

    if (ImGui::BeginTable("##results", 4,
            ImGuiTableFlags_RowBg | ImGuiTableFlags_Borders |
            ImGuiTableFlags_ScrollY | ImGuiTableFlags_Resizable)) {
        ImGui::TableSetupColumn("ID", ImGuiTableColumnFlags_WidthStretch);
        ImGui::TableSetupColumn("Kind", ImGuiTableColumnFlags_WidthFixed, 80);
        ImGui::TableSetupColumn("Domain", ImGuiTableColumnFlags_WidthFixed, 100);
        ImGui::TableSetupColumn("Description", ImGuiTableColumnFlags_WidthStretch);
        ImGui::TableHeadersRow();

        for (int i = 0; i < (int)g_results.size(); ++i) {
            const auto& r = g_results[i];
            ImGui::TableNextRow();
            ImGui::TableSetColumnIndex(0);
            bool sel = (i == g_selected);
            if (ImGui::Selectable(r.id.c_str(), sel,
                                  ImGuiSelectableFlags_SpanAllColumns)) {
                g_selected = i;
            }
            ImGui::TableSetColumnIndex(1);
            ImGui::TextUnformatted(r.kind.c_str());
            ImGui::TableSetColumnIndex(2);
            ImGui::TextUnformatted(r.domain.c_str());
            ImGui::TableSetColumnIndex(3);
            ImGui::TextUnformatted(r.description.c_str());
        }
        ImGui::EndTable();
    }

    if (g_selected >= 0 && g_selected < (int)g_results.size()) {
        ImGui::Separator();
        const auto& r = g_results[g_selected];
        ImGui::Text("Selected: %s", r.id.c_str());
        ImGui::TextWrapped("Signature: %s", r.signature.c_str());
        ImGui::Spacing();
        ImGui::BeginDisabled(true);
        ImGui::Button(TI_PLAYER_PLAY " Run");
        ImGui::EndDisabled();
        ImGui::SameLine();
        ImGui::TextDisabled("(jobs system pending — issue 0065)");
    }

    ImGui::End();
}

static void draw_jobs() {
    if (!g_show_jobs) return;
    if (!ImGui::Begin(TI_LIST " Jobs", &g_show_jobs)) {
        ImGui::End();
        return;
    }
    ImGui::TextDisabled("Jobs queue panel — pendiente issue 0065");
    ImGui::TextWrapped(
        "Cuando jobs_pool_cpp_core este extraido del graph_explorer al "
        "registry, este panel mostrara cola/running/done con live progress. "
        "Ver dev/issues/0067-odr-osint-prereqs-roadmap.md");
    ImGui::End();
}

static void draw_datasets() {
    if (!g_show_datasets) return;
    if (!ImGui::Begin(TI_DATABASE " Datasets", &g_show_datasets)) {
        ImGui::End();
        return;
    }
    ImGui::TextDisabled("DuckDB browser — pendiente fase 2 del MVP");
    ImGui::End();
}

static void render() {
    static fn_ui::PanelToggle panels[] = {
        { "Launcher",   nullptr, &g_show_launcher   },
        { "Collectors", nullptr, &g_show_collectors },
        { "Jobs",       nullptr, &g_show_jobs       },
        { "Datasets",   nullptr, &g_show_datasets   },
    };
    fn_ui::app_menubar(panels,
                       sizeof(panels) / sizeof(panels[0]),
                       nullptr);
    draw_launcher();
    draw_collectors();
    draw_jobs();
    draw_datasets();
}

int main(int argc, char** argv) {
    // CLI: opcional, primer arg = path a registry.db (override).
    if (argc >= 2) {
        g_db_path = argv[1];
    }
    if (g_db_path.empty()) {
        const char* env = std::getenv("FN_REGISTRY_DB");
        if (env && *env) g_db_path = env;
    }
    if (g_db_path.empty()) {
        const char* root = std::getenv("FN_REGISTRY_ROOT");
        if (root && *root) {
            g_db_path = std::string(root) + "/registry.db";
        }
    }

    if (g_db_path.empty()) {
        std::fprintf(stderr,
            "[odr_console] No registry.db path. Pass as arg or set "
            "FN_REGISTRY_DB / FN_REGISTRY_ROOT.\n");
    } else if (!registry_open(g_registry, g_db_path)) {
        std::fprintf(stderr,
            "[odr_console] Failed to open registry.db: %s\n",
            g_db_path.c_str());
    } else {
        registry_list_recent(g_registry, 50, g_results);
    }

    // Resolver registry_root, app_dir, python_exe.
    if (const char* root = std::getenv("FN_REGISTRY_ROOT"); root && *root) {
        g_registry_root = root;
    } else if (!g_db_path.empty()) {
        // Asume registry.db esta en raiz del registry.
        std::filesystem::path p(g_db_path);
        g_registry_root = p.parent_path().string();
    }

    if (const char* d = std::getenv("ODR_APP_DIR"); d && *d) {
        g_app_dir = d;
    } else if (!g_registry_root.empty()) {
        g_app_dir = g_registry_root +
            "/projects/online_data_recopilation/apps/odr_console";
    }
    g_ops_db_path = g_app_dir + "/operations.db";

    if (const char* py = std::getenv("FN_PYTHON"); py && *py) {
        g_python_exe = py;
    } else if (!g_registry_root.empty()) {
        g_python_exe = g_registry_root + "/python/.venv/bin/python3";
    } else {
        g_python_exe = "python3";
    }

    // Discover collectors: prefer app_dir/collectors, fallback a
    // <exe_dir>/assets/collectors/ (Windows distribuible).
    if (!g_app_dir.empty()) {
        collectors_discover(g_app_dir + "/collectors", g_collectors);
    }
    if (g_collectors.empty()) {
        const char* assets = fn::asset_dir();
        if (assets && *assets) {
            std::string assets_collectors = std::string(assets) + "/collectors";
            collectors_discover(assets_collectors, g_collectors);
        }
    }

    fn::AppConfig cfg;
    cfg.title = "odr_console — online data recopilation";
    cfg.width = 1400;
    cfg.height = 900;
    cfg.about = { "odr_console", "0.1.0",
                  "Lanzador GUI de funciones del registry para recolectar "
                  "datos online (APIs, scraping, browser CDP). MVP." };
    cfg.log = { "odr_console.log", 1 };

    int rc = fn::run_app(cfg, render);
    registry_close(g_registry);
    return rc;
}