#include "ams_tab.hpp"

#include <filesystem>
#include <string>

#include "confirm_page.hpp"
#include "current_cfw.hpp"
#include "dialogue_page.hpp"
#include "download.hpp"
#include "extract.hpp"
#include "fs.hpp"
#include "utils.hpp"
#include "worker_page.hpp"

namespace i18n = brls::i18n;
using namespace i18n::literals;

AmsTab::AmsTab(const nlohmann::json& nxlinks, const bool erista, const bool hideStandardEntries) : brls::List()
{
    this->erista = erista;
    this->hekate = util::getValueFromKey(nxlinks, "hekate");
    auto cfws = util::getValueFromKey(nxlinks, "cfws");

    if (!hideStandardEntries) {
        this->description = new brls::Label(brls::LabelStyle::DESCRIPTION, "menus/main/ams_text"_i18n + (CurrentCfw::running_cfw == CFW::ams ? "\n" + "menus/ams_update/current_ams"_i18n + CurrentCfw::getAmsInfo() : "") + (erista ? "\n" + "menus/ams_update/erista_rev"_i18n : "\n" + "menus/ams_update/mariko_rev"_i18n), true);
        this->addView(description);
        CreateDownloadItems(util::getValueFromKey(cfws, "Atmosphere"));

        description = new brls::Label(
            brls::LabelStyle::DESCRIPTION,
            "menus/ams_update/deepsea_label"_i18n,
            true);
        this->addView(description);

        listItem = new brls::ListItem("menus/ams_update/get_custom_deepsea"_i18n);
        listItem->setHeight(LISTITEM_HEIGHT);
        listItem->getClickEvent()->subscribe([&](brls::View* view) {
            nlohmann::ordered_json modules;
            download::getRequest(DEEPSEA_META_JSON, modules);
            ShowCustomDeepseaBuilder(modules);
        });
        this->addView(listItem);

        CreateDownloadItems(util::getValueFromKey(cfws, "DeepSea"));
    }

    auto custom_pack = fs::parseJsonFile(CUSTOM_PACKS_PATH);
    if (custom_pack.size() != 0) {
        description = new brls::Label(
            brls::LabelStyle::DESCRIPTION,
            fmt::format("menus/ams_update/custom_packs_label"_i18n, CUSTOM_PACKS_PATH),
            true);
        this->addView(description);

        CreateDownloadItems(cfws.size() ? custom_pack : nlohmann::ordered_json::object(), true);  // TODO: better way to check for availability of the links
    }
}

void AmsTab::CreateDownloadItems(const nlohmann::ordered_json& cfw_links, bool hekate)
{
    std::string operation("menus/ams_update/getting_ams"_i18n);
    std::vector<std::pair<std::string, std::string>> links;
    links = download::getLinksFromJson(cfw_links);
    if (links.size()) {
        auto hekate_link = download::getLinksFromJson(this->hekate);
        std::string hekate_url = hekate_link[0].second;
        std::string text_hekate = "menus/common/download"_i18n + hekate_link[0].first;

        for (const auto& link : links) {
            std::string url = link.second;
            std::string text("menus/common/download"_i18n + link.first + "menus/common/from"_i18n + url);
            listItem = new brls::ListItem(link.first);
            listItem->setHeight(LISTITEM_HEIGHT);
            listItem->getClickEvent()->subscribe([&, this, text, text_hekate, url, hekate_url, operation, hekate](brls::View* view) {
                if (!erista && !std::filesystem::exists(MARIKO_PAYLOAD_PATH)) {
                    brls::Application::crash("menus/errors/mariko_payload_missing"_i18n);
                }
                else {
                    CreateStagedFrames(text, url, operation, erista, hekate, text_hekate, hekate_url);
                }
            });
            this->addView(listItem);
        }
        this->size += 1;
    }
    else {
        description = new brls::Label(
            brls::LabelStyle::SMALL,
            "menus/main/links_not_found"_i18n,
            true);
        description->setHorizontalAlign(NVG_ALIGN_CENTER);
        this->addView(description);
    }
}

void AmsTab::CreateStagedFrames(const std::string& text, const std::string& url, const std::string& operation, bool erista, bool hekate, const std::string& text_hekate, const std::string& hekate_url)
{
    brls::StagedAppletFrame* stagedFrame = new brls::StagedAppletFrame();
    stagedFrame->setTitle(operation);
    stagedFrame->addStage(
        new ConfirmPage(stagedFrame, text));
    stagedFrame->addStage(
        new WorkerPage(stagedFrame, "menus/common/downloading"_i18n, [url]() { util::downloadArchive(url, archiveType::ams_cfw); }));
    stagedFrame->addStage(
        new WorkerPage(stagedFrame, "menus/common/extracting"_i18n, []() { util::extractArchive(archiveType::ams_cfw); }));
    if (hekate) {
        stagedFrame->addStage(
            new DialoguePage_ams(stagedFrame, text_hekate, erista));
        stagedFrame->addStage(
            new WorkerPage(stagedFrame, "menus/common/downloading"_i18n, [hekate_url]() { util::downloadArchive(hekate_url, archiveType::bootloaders); }));
        stagedFrame->addStage(
            new WorkerPage(stagedFrame, "menus/common/extracting"_i18n, []() { util::extractArchive(archiveType::bootloaders); }));
    }
    stagedFrame->addStage(
        new ConfirmPage(stagedFrame, "menus/ams_update/reboot_rcm"_i18n, false, true, erista));
    brls::Application::pushView(stagedFrame);
}

std::string AmsTab::GetRepoName(const std::string& repo)
{
    return repo.substr(repo.find("/") + 1, repo.length());
}

std::set<std::string> AmsTab::GetLastDownloadedModules(const std::string& json_path)
{
    nlohmann::json package = fs::parseJsonFile(json_path);
    std::set<std::string> res;
    if (package.find("modules") != package.end()) {
        for (const auto& module : package.at("modules")) {
            res.insert(module.get<std::string>());
        }
    }
    return res;
}

nlohmann::ordered_json AmsTab::SortDeepseaModules(const nlohmann::ordered_json& modules)
{
    nlohmann::ordered_json sorted_modules = nlohmann::ordered_json::object();
    if (modules.find("modules") != modules.end()) {
        for (const auto& module : modules.at("modules").items()) {
            sorted_modules[std::string(module.value().at("category"))][module.key()] = module.value();
        }
    }
    return sorted_modules;
}

void AmsTab::ShowCustomDeepseaBuilder(nlohmann::ordered_json& modules)
{
    modules = SortDeepseaModules(modules);
    std::map<std::string, std::string> name_map;

    brls::TabFrame* appView = new brls::TabFrame();
    appView->setIcon("romfs:/deepsea_icon.png");

    std::vector<brls::List*> lists;
    std::set<std::string> old_modules = GetLastDownloadedModules(DEEPSEA_PACKAGE_PATH);

    brls::ToggleListItem* deepseaListItem;
    for (const auto& category : modules.items()) {
        brls::List* list = new brls::List();

        for (const auto& module : category.value().items()) {
            auto module_value = module.value();
            std::string requirements = "";
            if (!module_value.at("requires").empty()) {
                requirements = "menus/ams_update/depends_on"_i18n;
                for (const auto& r : module.value().at("requires")) {
                    requirements += " " + r.get<std::string>() + ",";
                }
                requirements.pop_back();
            }
            if (module_value.at("required")) {
                deepseaListItem = new UnTogglableListItem(module_value.at("displayName"), 1, requirements, "Required", "o");
            }
            else {
                deepseaListItem = new ::brls::ToggleListItem(module_value.at("displayName"),
                                                             old_modules.find(module.key()) != old_modules.end() ? 1 : 0,
                                                             requirements,
                                                             "menus/common/selected"_i18n,
                                                             "menus/common/off"_i18n);
            }
            name_map.insert(std::pair(module_value.at("displayName"), module.key()));
            deepseaListItem->registerAction("menus/ams_update/show_module_description"_i18n, brls::Key::Y, [this, module_value] {
                brls::Dialog* dialog;
                dialog = new brls::Dialog(fmt::format("{}:\n{}", module_value.at("repo"), module_value.at("description")));
                brls::GenericEvent::Callback callback = [dialog](brls::View* view) {
                    dialog->close();
                };
                dialog->addButton("menus/common/ok"_i18n, callback);
                dialog->setCancelable(true);
                dialog->open();
                return true;
            });
            list->addView(deepseaListItem);
        }
        lists.push_back(list);
        appView->addTab(category.key(), list);
    }

    appView->registerAction("menus/ams_update/download_deepsea_package"_i18n, brls::Key::X, [this, lists, name_map] {
        std::set<std::string> desired_modules;
        for (const auto& list : lists) {
            for (size_t i = 0; i < list->getViewsCount(); i++) {
                if (brls::ToggleListItem* item = dynamic_cast<brls::ToggleListItem*>(list->getChild(i))) {
                    if (item->getToggleState()) {
                        desired_modules.insert(name_map.at(item->getLabel()));
                    }
                }
            }
        }

        std::string request_url = DEEPSEA_BUILD_URL;
        for (const auto& e : desired_modules)
            request_url += e + ";";

        CreateStagedFrames("menus/common/download"_i18n + "Custom DeepSea package" + "menus/common/from"_i18n + request_url,
                           request_url,
                           "menus/ams_update/get_custom_deepsea"_i18n,
                           erista);
        return true;
    });
    appView->registerAction("", brls::Key::PLUS, [this] { return true; });

    brls::PopupFrame::open("menus/ams_update/deepsea_builder"_i18n, appView, modules.empty() ? "menus/ams_update/cant_fetch_deepsea"_i18n : "menus/ams_update/build_your_deepsea"_i18n, "");
}

brls::View* AmsTab::getDefaultFocus()
{
    if (this->size)
        return this->brls::List::getDefaultFocus();
    else
        return nullptr;
}

bool UnTogglableListItem::onClick()
{
    return true;
}