main.go

// OSMON
// Author: Daniel Debny - github.com/debek
// Year: 24.12.2023
// Description: An application for displaying system information in the terminal.

package main

import (
    "flag"
    "fmt"
    "os"
)

func main() {
    var interval intervalFlag
    var helpFlag bool
    var versionFlag bool

    flag.Usage = displayHelp
    flag.Var(&interval, "i", "Set interval for refreshing the display in seconds (shorthand)")
    flag.Var(&interval, "interval", "Set interval for refreshing the display in seconds")
    flag.BoolVar(&helpFlag, "h", false, "Display help information (shorthand)")
    flag.BoolVar(&helpFlag, "help", false, "Display help information")
    flag.BoolVar(&versionFlag, "v", false, "Display the version of the application (shorthand)")
    flag.BoolVar(&versionFlag, "version", false, "Display the version of the application")
    flag.Parse()

    if versionFlag {
        appVersion := os.Getenv("APP_VERSION")
        if appVersion == "" {
            appVersion = "development"
        }
        fmt.Printf("Osmon version %s\n", appVersion)
        os.Exit(0)
    }

    if helpFlag {
        displayHelp()
        os.Exit(0)
    }

    if interval.set {
        // Display system information at intervals
        displaySystemInfoAtInterval(interval.value)
    } else {
        // Display system information once
        displaySystemInfo()
    }
}