const fs = require("fs");
const flowPath = "docker/demo-flow.json";
const flow = JSON.parse(fs.readFileSync(flowPath, "utf8"));

let newFlow = flow.filter(n => n.id !== "demo_dbg_reactor_inspect");
const reactor = newFlow.find(n => n.id === "demo_reactor");
reactor.wires[0] = reactor.wires[0].filter(id => id !== "demo_dbg_reactor_inspect");

reactor.kla = 70;

newFlow.push({
  id: "demo_dbg_reactor_inspect",
  type: "function",
  z: "demo_tab_treatment",
  name: "Reactor State Inspector",
  func: 'if (msg.topic !== "GridProfile") return null;\nconst p = msg.payload;\nif (!p || !p.grid) return null;\nconst now = Date.now();\nif (global.get("lastInspect") && now - global.get("lastInspect") < 5000) return null;\nglobal.set("lastInspect", now);\nconst profile = p.grid.map((row, i) => "cell" + i + "(" + (i*p.d_x).toFixed(0) + "m): NH4=" + row[3].toFixed(2) + " DO=" + row[0].toFixed(2));\nnode.warn("GRID: " + profile.join(" | "));\nreturn null;',
  outputs: 1,
  x: 840,
  y: 320,
  wires: [[]]
});
reactor.wires[0].push("demo_dbg_reactor_inspect");

fs.writeFileSync(flowPath, JSON.stringify(newFlow, null, 2) + "\n");
console.log("kla:", reactor.kla, "X_A_init:", reactor.X_A_init);