gokultp/go-tprof

package staticserver

import (
    "fmt"
    "net/http"
    "strings"
    "sync"

    "github.com/fatih/color"
    _ "github.com/gokultp/go-tprof/internal/statik"
    "github.com/rakyll/statik/fs"
)

const (
    dataPlaceHolder = "{{data}}"
    indexFile       = "/index.html"
)

// Start will start the server
func Start(data, port string, wg *sync.WaitGroup) error {
    defer wg.Done()
    statikFS, err := fs.New()
    if err != nil {
        return err
    }
    strHTML, err := getHTMLContent(statikFS, data)
    if err != nil {
        return err
    }

    http.Handle("/_nuxt/", http.FileServer(statikFS))
    http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
        fmt.Fprintf(w, strHTML)
    })
    if err := printHelpMsg(port); err != nil {
        return err
    }
    if err := http.ListenAndServe(":"+port, nil); err != nil {
        return err
    }

    return nil

}

func getHTMLContent(hfs http.FileSystem, data string) (string, error) {
    d, err := fs.ReadFile(hfs, indexFile)
    if err != nil {
        return "", err
    }
    return strings.Replace(string(d), dataPlaceHolder, data, 1), nil
}
func printHelpMsg(port string) error {
    clrPrinter := color.New(color.FgMagenta)
    if _, err := clrPrinter.Printf("\n\n\n\n\t Visit http://localhost:%s to see the reports", port); err != nil {
        return err
    }
    if _, err := clrPrinter.Printf("\n\n\t Press Ctrl + C to exit"); err != nil {
        return err
    }
    return nil
}