mjslabs/auth-plug

package login

import (
    "net/http"

    "github.com/labstack/echo/v4"
    "github.com/mjslabs/auth-plug/auth"
)

// Function we want to use to authenticate the user
var authenticator = auth.ValidateLogin

// Function for generating the authentication token
var generator = auth.JWTCreateToken

// Post implements the HTTP POST method on /login.
// This takes a username and password and sends back
// a JWT on validation of the supplied credentials.
func Post(c echo.Context) error {
    username := c.FormValue("username")
    password := c.FormValue("password")

    if username == "" || password == "" {
        return echo.ErrBadRequest
    }

    authed, user, err := authenticator(username, password)
    if err != nil {
        return err
    } else if !authed {
        return echo.ErrUnauthorized
    }

    token, err := generator(user)
    if err != nil {
        return err
    }
    return c.JSON(http.StatusOK, map[string]string{
        "token": token,
    })
}