import { WHC06 as WHC06Base } from "@hangtime/grip-connect"
import { writeFile } from "node:fs/promises"
import process from "node:process"
import { bluetooth } from "webbluetooth"

/**
 * Represents a Weiheng - WH-C06 (or MAT Muscle Meter) device.
 * To use this device enable: `chrome://flags/#enable-experimental-web-platform-features`.
 * {@link https://googlechrome.github.io/samples/web-bluetooth/scan.html| Web Bluetooth}
 * {@link https://weihengmanufacturer.com}
 */
export class WHC06 extends WHC06Base {
  override download = async (format: "csv" | "json" | "xml" = "csv"): Promise<void> => {
    let content = ""

    if (format === "csv") {
      content = this.downloadToCSV()
    } else if (format === "json") {
      content = this.downloadToJSON()
    } else if (format === "xml") {
      content = this.downloadToXML()
    }

    const now = new Date()
    // YYYY-MM-DD
    const date = now.toISOString().split("T")[0]
    // HH-MM-SS
    const time = now.toTimeString().split(" ")[0].replace(/:/g, "-")

    const fileName = `data-export-${date}-${time}.${format}`

    await writeFile(fileName, content)
    console.log(`File saved as ${fileName}`)
  }

  protected async getBluetooth(): Promise<Bluetooth> {
    // If running in a browser with native Web Bluetooth support:
    if (typeof navigator !== "undefined" && navigator.bluetooth) {
      return navigator.bluetooth
    }

    // If running in Node, Bun, or Deno environment
    if (typeof process !== "undefined" && process.versions?.node) {
      return bluetooth
    }

    // If none of the above conditions are met, throw an error.
    throw new Error("Bluetooth not available.")
  }
}