var routes = {
    page1: "pages/page1.html",
    page2: "pages/page2.html",
    page3: "pages/page3.html",
    page4: "pages/page4.html",
    page5: "pages/page5.html",
    page6: "pages/page6.html",
    page7: "pages/page7.html",
    page8: "pages/page8.html",
};
var currentPage = null;
var loadingPage = false;
var pageHandlers = {
    page1: {
        init: function () {
            if (window.initPage1) window.initPage1();
        },
        exit: function () {
            if (window.exitPage1) window.exitPage1();
        },
    },
    page2: {
        init: function () {
            if (window.initPage2) window.initPage2();
        },
        exit: function () {
            if (window.exitPage2) window.exitPage2();
        },
    },
    page3: {
        init: function () {
            if (window.initPage3) window.initPage3();
        },
        exit: function () {
            if (window.exitPage3) window.exitPage3();
        },
    },
    page4: {
        init: function () {
            if (window.initPage4) window.initPage4();
        },
        exit: function () {
            if (window.exitPage4) window.exitPage4();
        },
    },
    page5: {
        init: function () {
            if (window.initPage5) window.initPage5();
        },
        exit: function () {
            if (window.exitPage5) window.exitPage5();
        },
    },
    page6: {
        init: function () {
            if (window.initPage6) window.initPage6();
        },
        exit: function () {
            if (window.exitPage6) window.exitPage6();
        },
    },
    page7: {
        init: function () {
            if (window.initPage7) window.initPage7();
        },
        exit: function () {
            if (window.exitPage7) window.exitPage7();
        },
    },
    page8: {
        init: function () {
            if (window.initPage8) window.initPage8();
        },
        exit: function () {
            if (window.exitPage8) window.exitPage8();
        },
    },
};

function clearOldScripts() {
    document.querySelectorAll("script[data-dynamic='1']").forEach(function (s) {
        return s.remove();
    });
}

function runScripts(container) {
    var scripts = container.querySelectorAll("script");
    scripts.forEach(function (oldScript) {
        var s = document.createElement("script");
        s.dataset.dynamic = "1";
        if (oldScript.src) {
            s.src = oldScript.src;
        } else {
            s.textContent = oldScript.textContent;
        }
        document.body.appendChild(s);
    });
}

function loadPage(name) {
    var view = document.getElementById("view");
    var url = routes[name];
    if (!url) {
        view.innerHTML = "无法找到页面";
        return;
    }
    if (loadingPage) {
        return;
    }
    if (currentPage === name) {
        return;
    }
    loadingPage = true;
    if (currentPage && pageHandlers[currentPage] && pageHandlers[currentPage].exit) {
        console.log("exit:", currentPage);
        pageHandlers[currentPage].exit();
    }
    clearOldScripts();
    fetch(url, { credentials: "include" })
        .then(function (res) {
            return res.text();
        })
        .then(function (html) {
            if (html.includes("login.html") || html.includes("登录")) {
                window.location.href = "/";
                return;
            }
            view.innerHTML = html;
            runScripts(view);
            currentPage = name;
            if (pageHandlers[name] && pageHandlers[name].init) {
                console.log("init:", name);
                pageHandlers[name].init();
            }
        })
        .catch(function (e) {
            console.error("loadPage error:", e);
            view.innerHTML = "页面加载失败";
        })
        .finally(function () {
            loadingPage = false;
        });
}

function setText(id, value, page, icon) {
    if (page && currentPage !== page) {
        return;
    }
    var el = document.getElementById(id);
    if (!el) {
        return;
    }
    // 后端状态值: {level: ok|warn|err|info, text}, 渲染 CSS 色点
    if (value && typeof value === "object" && value.text !== undefined) {
        var level = ["ok", "warn", "err", "info"].includes(value.level) ? value.level : "info";
        var txt =
            value.text === null || value.text === undefined || value.text === ""
                ? "--"
                : String(value.text);
        el.innerHTML = '<span class="dot ' + level + '"></span>' + escapeHtml(txt);
        return;
    }
    var text = value !== null && value !== undefined ? value : "--";
    // 普通值可选携带行内 SVG 图标 (仅在有有效数据时显示, "--" 不显示)
    if (icon && text !== "--") {
        el.innerHTML =
            '<svg class="icon"><use href="#' + icon + '"/></svg>' + escapeHtml(String(text));
        return;
    }
    el.textContent = text;
}

function setBtnStatus(id, enabled, page) {
    if (page && currentPage !== page) {
        return;
    }
    var btn = document.getElementById(id);
    if (btn) btn.disabled = !enabled;
}