Implement autocomplete and smart queries

client/smart-query.js

@@ -0,0 +1,102 @@
+"use strict";
+
+import config from "./config";
+import * as expression from "../common/expression";
+
+let resources = {
+  devices: {},
+  faults: {
+    Device: { parameter: ["PARAM", "device"], type: "string" },
+    Channel: { parameter: ["PARAM", "channel"], type: "string" },
+    Code: { parameter: ["PARAM", "code"], type: "string" },
+    Retries: { parameter: ["PARAM", "retries"], type: "number" },
+    Timestamp: { parameter: ["PARAM", "timestamp"], type: "timestamp" }
+  },
+  presets: {
+    ID: { parameter: ["PARAM", "_id"], type: "string" },
+    Channel: { parameter: ["PARAM", "channel"], type: "string" },
+    Weight: { parameter: ["PARAM", "weight"], type: "number" }
+  },
+  provisions: {
+    ID: { parameter: ["PARAM", "_id"], type: "string" }
+  }
+};
+
+for (let v of Object.values(config.ui.filters))
+  resources.devices[v.label] = {
+    parameter: expression.parse(v.parameter),
+    type: (v.type || "").split(",").map(s => s.trim())
+  };
+
+function getLabels(resource) {
+  if (!resources[resource]) return [];
+  return Object.keys(resources[resource]);
+}
+
+function queryNumber(param, value) {
+  let op = "=";
+  for (let o of ["<>", "=", "<=", "<", ">=", ">"])
+    if (value.startsWith(o)) {
+      op = o;
+      value = value.slice(o.length).trim();
+      break;
+    }
+
+  let v = parseInt(value);
+  if (v !== +value) return null;
+
+  return [op, param, v];
+}
+
+function queryString(param, value) {
+  return ["LIKE", ["FUNC", "LOWER", param], value.toLowerCase()];
+}
+
+function queryMac(param, value) {
+  value = value.replace(/[^a-f0-9]/gi, "").toLowerCase();
+  if (!value) return null;
+  if (value.length === 12)
+    return [
+      "LIKE",
+      ["FUNC", "LOWER", param],
+      value.replace(/(..)(?!$)/g, "$1:")
+    ];
+
+  return [
+    "OR",
+    [
+      "LIKE",
+      ["FUNC", "LOWER", param],
+      `%${value.replace(/(..)(?!$)/g, "$1:")}%`
+    ],
+    ["LIKE", ["FUNC", "LOWER", param], `%${value.replace(/(.)(.)/g, "$1:$2")}%`]
+  ];
+}
+
+function unpack(resource, label, value) {
+  if (!resources[resource]) return null;
+  const type = resources[resource][label].type;
+  value = value.trim();
+  let res = ["OR"];
+
+  if (type.length === 0 || type.includes("number")) {
+    let q = queryNumber(resources[resource][label].parameter, value);
+    if (q) res.push(q);
+  }
+
+  if (type.length === 0 || type.includes("string")) {
+    let q = queryString(resources[resource][label].parameter, value);
+    if (q) res.push(q);
+  }
+
+  if (type.includes("mac")) {
+    let q = queryMac(resources[resource][label].parameter, value);
+    if (q) res.push(q);
+  }
+
+  if (res.length <= 1) return null;
+  else if (res.length === 2) return res[1];
+  else return res;
+}
+
+export { getLabels, unpack };