const UpdateBanner = {
    obj_banner: null,
    str_pending_tag: null,

    init: () => {
        UpdateBanner._create_dom();
        UpdateBanner._bind_events();
    },

    _create_dom: () => {
        let obj_banner = document.createElement("div");
        obj_banner.id = "update_banner";
        obj_banner.className = "update-banner d-none";
        obj_banner.innerHTML =
            '<div class="d-flex align-items-center justify-content-between px-3 py-2">' +
                '<span class="update-banner-text">' +
                    '<i class="mdi mdi-download-circle-outline me-1"></i>' +
                    '<span id="update_banner_message">Mise a jour disponible</span>' +
                '</span>' +
                '<div class="d-flex align-items-center gap-2">' +
                    '<button id="btn_update_install" class="btn btn-sm btn-light">' +
                        '<i class="mdi mdi-download me-1"></i>Installer' +
                    '</button>' +
                    '<button id="btn_update_close" class="btn btn-sm btn-outline-light border-0">' +
                        '<i class="mdi mdi-close"></i>' +
                    '</button>' +
                '</div>' +
            '</div>';

        let obj_nav = document.querySelector("nav.navbar");
        obj_nav.parentNode.insertBefore(obj_banner, obj_nav.nextSibling);
        UpdateBanner.obj_banner = obj_banner;
    },

    _bind_events: () => {
        let obj_btn_install = document.getElementById("btn_update_install");
        obj_btn_install.addEventListener("click", () => {
            UpdateBanner._on_install_click();
        });

        let obj_btn_close = document.getElementById("btn_update_close");
        obj_btn_close.addEventListener("click", () => {
            UpdateBanner._hide();
        });

        window.api.on_update_available((obj_data) => {
            UpdateBanner.str_pending_tag = obj_data.str_tag_name;
            UpdateBanner._show("Version " + obj_data.str_version + " disponible");
        });

        window.api.on_update_progress((obj_data) => {
            UpdateBanner._show_progress(obj_data.str_step, obj_data.nb_percent);
        });

        window.api.on_update_error((obj_data) => {
            UpdateBanner.str_pending_tag = obj_data.str_tag_name || UpdateBanner.str_pending_tag;
            UpdateBanner._show_error(obj_data.str_message);
        });
    },

    _show: (str_message) => {
        let obj_message = document.getElementById("update_banner_message");
        obj_message.textContent = str_message;

        let obj_btn_install = document.getElementById("btn_update_install");
        obj_btn_install.innerHTML = '<i class="mdi mdi-download me-1"></i>Installer';
        obj_btn_install.disabled = false;
        obj_btn_install.className = "btn btn-sm btn-light";

        let obj_btn_close = document.getElementById("btn_update_close");
        obj_btn_close.classList.remove("d-none");

        UpdateBanner.obj_banner.classList.remove("d-none", "update-banner-error");
        document.body.classList.add("has-update-banner");
    },

    _hide: () => {
        UpdateBanner.obj_banner.classList.add("d-none");
        document.body.classList.remove("has-update-banner");
    },

    _on_install_click: () => {
        if (!UpdateBanner.str_pending_tag) {
            return;
        }

        let obj_btn_install = document.getElementById("btn_update_install");
        obj_btn_install.disabled = true;
        obj_btn_install.innerHTML = '<span class="spinner-border spinner-border-sm me-1"></span>0%';

        let obj_btn_close = document.getElementById("btn_update_close");
        obj_btn_close.classList.add("d-none");

        window.api.apply_update(UpdateBanner.str_pending_tag)
            .catch((obj_err) => {
                console.error("UpdateBanner: apply_update echoue :", obj_err);
            });
    },

    _show_progress: (str_step, nb_percent) => {
        let obj_btn_install = document.getElementById("btn_update_install");
        let obj_message = document.getElementById("update_banner_message");

        let str_label = "Mise a jour";
        if (str_step === "downloading") {
            str_label = "Telechargement";
        } else if (str_step === "extracting") {
            str_label = "Extraction";
        } else if (str_step === "installing") {
            str_label = "Installation";
        } else if (str_step === "restarting") {
            str_label = "Redemarrage";
        }

        obj_message.textContent = str_label + "...";
        obj_btn_install.innerHTML = '<span class="spinner-border spinner-border-sm me-1"></span>' + nb_percent + "%";
        obj_btn_install.disabled = true;
    },

    _show_error: (str_message) => {
        let obj_message = document.getElementById("update_banner_message");
        obj_message.textContent = "Erreur : " + str_message;

        UpdateBanner.obj_banner.classList.add("update-banner-error");

        let obj_btn_install = document.getElementById("btn_update_install");
        obj_btn_install.innerHTML = '<i class="mdi mdi-refresh me-1"></i>Reessayer';
        obj_btn_install.disabled = false;
        obj_btn_install.className = "btn btn-sm btn-outline-light";

        let obj_btn_close = document.getElementById("btn_update_close");
        obj_btn_close.classList.remove("d-none");
    },
};