function apiGetRetry(url, retry) {
    if (retry === undefined) {
        retry = false;
    }
    return fetch(url)
        .then(function (res) {
            if (!res.ok) {
                throw new Error("HTTP " + res.status);
            }
            return res.text();
        })
        .then(function (text) {
            if (!text || text.trim() === "") {
                throw new Error("empty response");
            }
            return text.trim();
        })
        .catch(function (e) {
            console.log("GET failed:", url, e.message);
            if (retry) {
                setTimeout(function () {
                    return apiGetRetry(url, true);
                }, 3000);
            }
            throw e;
        });
}

function getNetInfo1() {
    setText("text1", "", "page2");
    apiGetRetry("/api/network/interfaces")
        .then(function (data) {
            setText("text1", data, "page2");
        })
        .catch(function () {
            setText("text1", "获取失败", "page2");
        });
}

function getNetInfo2() {
    setText("text2", "", "page2");
    apiGetRetry("/api/network/routes")
        .then(function (data) {
            setText("text2", data, "page2");
        })
        .catch(function () {
            setText("text2", "获取失败", "page2");
        });
}

function getNetInfo3() {
    setText("text3", "", "page2");
    apiGetRetry("/api/network/dns")
        .then(function (data) {
            setText("text3", data, "page2");
        })
        .catch(function () {
            setText("text3", "获取失败", "page2");
        });
}
var netLogLevel = "";

function setNetLogLevel() {
    var level = logLevel.value;
    fetch("/api/network/loglevel", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ level: level }),
    })
        .then(function (r) {
            if (!r.ok) {
                return r.text().then(function (t) {
                    throw new Error(t);
                });
            }
            netLogLevel = level;
        })
        .catch(function (e) {
            logLevel.value = netLogLevel;
        });
}

function getNetLogLevel() {
    fetch("/api/network/loglevel")
        .then(function (r) {
            if (!r.ok) {
                return r.text().then(function (t) {
                    throw new Error(t);
                });
            }
            return r.json();
        })
        .then(function (d) {
            netLogLevel = d.log_level;
            logLevel.value = d.log_level;
        })
        .catch(function (e) {
            netLogLevel = "";
            logLevel.value = "";
        });
}

function downloadNetLogFile(event) {
    var btn = event.currentTarget;
    btn.disabled = true;
    fetch("/api/network/logfile")
        .then(function (r) {
            if (!r.ok) {
                throw new Error("HTTP " + r.status);
            }
            var disposition = r.headers.get("Content-Disposition");
            var filename = "network.log.tar.gz";
            if (disposition) {
                var match = disposition.match(/filename="?([^";]+)"?/);
                if (match) {
                    filename = match[1];
                }
            }
            return r.blob().then(function (blob) {
                return { blob: blob, filename: filename };
            });
        })
        .then(function (res) {
            downloadBlobFile(res.blob, res.filename);
            alert("下载成功");
        })
        .catch(function (e) {
            console.error("download failed:", e);
            alert("下载失败: " + e.message);
        })
        .finally(function () {
            btn.disabled = false;
            btn.textContent = "下载";
        });
}

function restartNetService(event) {
    if (!confirm("确定重启联网服务吗？")) {
        return;
    }
    var btn = event.currentTarget;
    btn.disabled = true;
    fetch("/api/network/restart", {
        method: "POST",
    })
        .then(function (r) {
            if (!r.ok) {
                return r.text().then(function (t) {
                    throw new Error(t);
                });
            }
            alert("重启成功");
        })
        .catch(function (e) {
            console.error("restart failed:", e);
            alert("重启失败: " + e.message);
        })
        .finally(function () {
            btn.disabled = false;
        });
}
var netStatusTimer = null;

function getNetworkStatus() {
    fetch("/api/network/status")
        .then(function (r) {
            if (!r.ok) {
                throw new Error("HTTP " + r.status);
            }
            return r.json();
        })
        .then(function (data) {
            setText("var1", data.var1, "page2");
            setText("var2", data.var2, "page2");
            setText("var3", data.var3, "page2");
            setText("var4", data.var4, "page2");
            setText("var5", data.var5, "page2");
        })
        .catch(function (e) {
            console.error("getNetworkStatus() failed:", e);
            ["var1", "var2", "var3", "var4", "var5"].forEach(function (id) {
                return setText(id, null, "page2");
            });
        });
    getNetLogLevel();
}

function startNetStatusRefresh() {
    if (netStatusTimer) {
        return;
    }
    getNetworkStatus();
    netStatusTimer = setInterval(function () {
        getNetworkStatus();
    }, 5000);
}

function stopNetStatusRefresh() {
    if (netStatusTimer) {
        clearInterval(netStatusTimer);
        netStatusTimer = null;
    }
}

function initPage2() {
    startNetStatusRefresh();
    getNetInfo1();
    getNetInfo2();
    getNetInfo3();
    connectLog("yfkj-networkd.service", "text4");
}

function exitPage2() {
    stopNetStatusRefresh();
    disconnectLog();
}