rtu_linux_services/web-ui.service/web/static/js/page4.js

let gnssLogLevel = "";
function setGnssLogLevel() {
  const level = logLevel.value;

  fetch("/api/gnss/loglevel", {
    method: "POST",
    headers: {"Content-Type": "application/json"},
    body: JSON.stringify({level})
  })
  .then(async r => {
    if (!r.ok) throw new Error(await r.text());
    gnssLogLevel = level;
  })
  .catch(e => {
    logLevel.value = gnssLogLevel;
  });
}

function getGnssLogLevel() {
  fetch("/api/gnss/loglevel")
  .then(async r => {
    if (!r.ok) throw new Error(await r.text());
    return r.json();
  })
  .then(d => {
    gnssLogLevel = d.log_level;
    logLevel.value = d.log_level;
  })
  .catch(e => {
    gnssLogLevel = "";
    logLevel.value = "";
  });
}

function downloadGnssLogFile(event) {
  const btn = event.currentTarget;
  btn.disabled = true;

  fetch("/api/gnss/logfile")
  .then(async r => {
    if (!r.ok) {
      throw new Error("HTTP " + r.status);
    }

    const disposition = r.headers.get("Content-Disposition");
    let filename = "gnss.log.tar.gz";
    if (disposition) {
      const match = disposition.match(/filename="?([^";]+)"?/);
      if (match) {
        filename = match[1];
      }
    }

    return {
      blob: await r.blob(),
      filename
    };
  })
  .then(({ blob, filename }) => {
    const url = URL.createObjectURL(blob);

    const a = document.createElement("a");
    a.href = url;
    a.download = filename;

    document.body.appendChild(a);
    a.click();
    a.remove();

    setTimeout(() => {
      URL.revokeObjectURL(url);
    }, 1000);

    alert("下载成功");
  })
  .catch(e => {
    console.error("download failed:", e);
    alert("下载失败: " + e.message);
  })
  .finally(() => {
    btn.disabled = false;
    btn.textContent = "下载";
  });
}

function restartGnssService(event) {
  if (!confirm("确定重启定位服务吗？")) {
    return;
  }

  const btn = event.currentTarget;
  btn.disabled = true;

  fetch("/api/gnss/restart", {
    method: "POST"
  })
  .then(async r => {
    if (!r.ok) {
      throw new Error(await r.text());
    }
    logLevel.value = "info";
    gnssLogLevel = logLevel.value;
    alert("重启成功");
  })
  .catch(e => {
    console.error("restart failed:", e);
    alert("重启失败: " + e.message);
  })
  .finally(() => {
    btn.disabled = false;
  });
}

let gnssStatusTimer = null;
function getGnssStatus() {
  fetch("/api/gnss/status")
    .then(async r => {
      if (!r.ok) {
        throw new Error("HTTP " + r.status);
      }

      return r.json();
    })
    .then(data => {
      ["var1", "var2", "var3"].forEach(id => {
        setText(id, data[id], "page4");
      });
      if (data.var1 == "--") {
        setText("var4", "--");
      } else {
        const located = data.var2 !== "" && data.var3 !== "" && data.var2 !== "--" && data.var3 !== "--";
        setText("var4", located ? "已定位" : "定位中", "page4");
      }
    })
    .catch(e => {
      console.error("getGnssStatus() failed:", e);

      ["var1", "var2", "var3", "var4"].forEach(id => {
        setText(id, null, "page4");
      });
    });

  getGnssLogLevel();
}

function startGnssStatusRefresh() {
  if (gnssStatusTimer) {
    return;
  }

  getGnssStatus();

  gnssStatusTimer = setInterval(() => {
    getGnssStatus();
  }, 5000);
}

function stopGnssStatusRefresh() {
  if (gnssStatusTimer) {
    clearInterval(gnssStatusTimer);
    gnssStatusTimer = null;
  }
}

function initPage4() {
  startGnssStatusRefresh()
  connectLog("yfkj-gnss.service", "text1");
}

function exitPage4() {
  stopGnssStatusRefresh()
  disconnectLog();
}