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main.go
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main.go
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package main
import (
"encoding/json"
"fmt"
"net/http"
"strings"
)
func main() {
http.HandleFunc("/registrations", registrationHandler)
http.HandleFunc("/authentications", authentications)
http.HandleFunc("/test", testResourceHandler)
http.ListenAndServe(":8081", nil)
}
func registrationHandler(w http.ResponseWriter, req *http.Request) {
req.ParseForm()
if req.FormValue("username") == "" || req.FormValue("password") == "" {
fmt.Fprint(w, "Please enter valid username and password.\r\n")
} else {
response, err := registerUser(req.FormValue("username"), req.FormValue("password"))
if err != nil {
fmt.Fprintf(w, err.Error())
} else {
fmt.Fprintf(w, response)
}
}
}
func authentications(w http.ResponseWriter, req *http.Request) {
username, password, ok := req.BasicAuth()
if ok {
tokenDetails, err := generateToken(username, password)
if err != nil {
fmt.Fprintf(w, err.Error())
} else {
enc := json.NewEncoder(w)
enc.SetIndent("", " ")
enc.Encode(tokenDetails)
}
} else {
fmt.Fprintf(w, "You require a username/password to get a token\r\n")
}
}
func testResourceHandler(w http.ResponseWriter, req *http.Request) {
authToken := strings.Split(req.Header.Get("Authentication"), "Bearer")[1]
userDetails, err := validateToken(authToken)
if err != nil {
fmt.Fprintf(w, err.Error())
} else {
username := fmt.Sprint(userDetails["username"])
fmt.Fprintf(w, "Welcome, "+username+"\r\n")
}
}