modbus-logger/public/js/app.js

// @ts-nocheck
import "./alpine.js";
import api from "./api.js";
import * as utils from "./utils/index.js";

var pages = ["loading", "monitoring", "configuration", "404"];
var dataStreamSource;
var graphData = [];
var g = null;

document.addEventListener("alpine:init", async () => {
  Alpine.store("app", {
    is_configured: false,
    is_opened: false,
    config: {
      mb_connection_type: "TCP",
      mb_tcp_ip: "127.0.0.1",
      mb_tcp_port: 502,
      mb_rtu_path: "",
      mb_rtu_baud: 9600,
      mb_rtu_data_bits: 8,
      mb_rtu_stop_bits: 1,
      mb_rtu_parity: "even",
      log_interval_ms: 1000,
    },
    currentPage: "loading",
    error: null,
    async init() {
      try {
        const connStatusEventSource = new EventSource("/api/modbus/status");
        const { config } = await api.get("/app/config");
        const { is_configured } = await api.get("/app/is_configured");

        this.is_configured = is_configured;

        if (config) this.config = config;
        if (is_configured) {
          connStatusEventSource.onmessage = (e) => (this.is_opened = e.data === "true");
          await utils.wait(500);
          this.currentPage = "monitoring";
          return;
        }

        this.currentPage = "configuration";
      } catch (error) {
        console.error(error);
        this.currentPage = "error";
        this.error = error;
      }
    },

    setPage(page) {
      if (!pages.includes(page)) {
        this.currentPage = "404";
        return;
      }
      this.currentPage = page;
    },
  });

  Alpine.data("deviceModal", () => ({
    isOpen: false,
    isLoading: false,
    error: null,
    graphView: '',
    data: {
      id: null,
      name: "",
      g_display_reg_addr: null,
      g_display_reg_format: "UI16",
      g_display_reg_type: 'IR',
      g_y_label: "",
      is_logging: false,
    },
    resetDataFields() {
      this.data.id = null;
      this.data.name = "";
      this.data.g_display_reg_addr = null;
      this.data.g_display_reg_format = "UI16";
      this.g_display_reg_type = 'IR';
      this.data.g_y_label = "";
      this.data.is_logging = false;
    },
    async create(cb) {
      try {
        this.isLoading = true;
        this.error = null;
        await api.post("/modbus/create_device", utils.dellNullableKeys({ ...this.data }));
        this.$dispatch("add-device", { ...this.data }); // add device to state
        this.resetDataFields();
        this.close();
        cb && cb();
      } catch (error) {
        this.error = error;
        console.error(error);
      } finally {
        this.isLoading = false;
      }
    },
    open() {
      this.isOpen = true;
    },
    close() {
      this.isOpen = false;
      this.resetDataFields();
      this.graphView = '';
    },
  }));

  Alpine.data("monitoringPage", () => ({
    selectedDevice: null,
    devices: [],
    isLoading: false,
    error: null,
    resetGraph() {
      if (g instanceof Dygraph) {
        g.destroy();
        graphData = [];
        g = null;
      }
    },
    async init() {
      try {
        this.$store.app.currentPage = "loading";
        this.devices = await api.get("/modbus/devices");
      } catch (error) {
        this.$store.app.error = error;
      } finally {
        this.$store.app.currentPage = "monitoring";
      }
    },
    selectDevice(device) {
      if (device.id === this.selectedDevice?.id)  return;
      
      this.error = null;
      this.selectedDevice = device;
      this.resetGraph();
      
      // if (device.g_display_reg_addr !== null) 
        this.isLoading = true;
      
      dataStreamSource?.close();
      dataStreamSource = new EventSource(`/api/modbus/data_stream?slave_id=${device.id}`);
      dataStreamSource.onerror = (e) => {
        dataStreamSource.close();
        this.isLoading = false;
        this.error = { message: 'Something went wrong.' }
      }
      dataStreamSource.onmessage = (e) => {
        const data = JSON.parse(e.data);
        console.log('[SSE Message]', data);
        if (data.graph !== null) {
          graphData.push([new Date(), data.graph.value]);
          if (g === null) {
            g = new Dygraph(document.getElementById("div_g"), graphData, {
              drawPoints: false,
              showRoller: false,
              ylabel: device.g_y_label,
            });
            g.resize(720, 300);
          }
          g.updateOptions({ file: graphData });
        }
        data.displayValues.forEach((v, i) => this.selectedDevice.display_values[i] = v);
        this.isLoading = false;
      };
    },
    async removeDevice(id) {
      try {
        await api.post("/modbus/remove_device", { id });
        this.devices = this.devices.filter((d) => d.id != id);
        this.selectedDevice = null;
      } catch (error) {
        console.error("Error while removing device.", error);
      }
    },
    async removeDisplayValue(id) {
      try {
        await api.post("/modbus/remove_display-value", { id });
        this.selectedDevice.display_values = this.selectedDevice.display_values.filter((v) => v.id != id);
      } catch (error) {
        console.error("Error while removing display value", error);
      }
    },
  }));

  Alpine.data("configAppPage", () => ({
    selectedConnectionType: "TCP",
    isLoading: false,
    errorMessage: "",
    async configurateApp() {
      try {
        this.isLoading = true;
        this.errorMessage = "";
        const data = { ...this.$store.app.config };
        const body = {
          RTU: utils.objKeysExclude(data, ["mb_tcp_ip", "mb_tcp_port"]),
          TCP: utils.objKeysExclude(data, [
            "mb_rtu_path",
            "mb_rtu_baud",
            "mb_rtu_parity",
            "mb_rtu_data_bits",
            "mb_rtu_stop_bits",
          ]),
        };
        await api.patch("/app/config", body[data.mb_connection_type]);
        await api.post("/modbus/connect");
        await utils.wait(500);
        this.$store.app.currentPage = "monitoring";
      } catch (error) {
        this.errorMessage = `${error.message}`;
      } finally {
        this.isLoading = false;
      }
    },
  }));

  Alpine.data("dialog", () => ({
    isOpen: false,
    isLoading: false,
    labels: {
      title: "Confirm dialog",
      body: "Are you sure you want to perform this action?",
    },
    onConfirm: () => undefined,
    onError: () => undefined,
    confirm() {
      if (this.onConfirm.constructor.name === "AsyncFunction") {
        this.isLoading = true;
        this.onConfirm()
          .then(() => this.close())
          .catch((e) => this.onError(e))
          .finally(() => (this.isLoading = false));
      } else {
        this.onConfirm();
        this.close();
      }
    },
    close() {
      this.isOpen = false;
    },

    /**
     * Update dialog state on event
     * @param {CustomEvent} event
     */
    open(event) {
      const { detail } = event;
      this.isOpen = detail.isOpen;
      this.onConfirm = detail.onConfirm;
      this.labels = { title: detail.title, body: detail.body };
    },
  }));
});