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path: root/app/controllers/sessions/controller.go
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package sessions

import (
	"fmt"
	"net/http"

	"github.com/xlgmokha/x/pkg/serde"
	"gitlab.com/gitlab-org/software-supply-chain-security/authorization/sparkled/pkg/oidc"
	"golang.org/x/oauth2"
)

type Controller struct {
	cfg *oidc.OpenID
}

func New(cfg *oidc.OpenID) *Controller {
	return &Controller{cfg: cfg}
}

func (c *Controller) MountTo(mux *http.ServeMux) {
	mux.HandleFunc("GET /session/new", c.New)
	mux.HandleFunc("GET /session/callback", c.Create)
}

func (c *Controller) New(w http.ResponseWriter, r *http.Request) {
	// TODO:: Generate and store nonce and use as state param to compare as a CSRF token
	url := c.cfg.Config.AuthCodeURL("todo-csrf-token", oauth2.SetAuthURLParam("audience", "todo"))
	http.Redirect(w, r, url, http.StatusFound)
}

func (c *Controller) Create(w http.ResponseWriter, r *http.Request) {
	token, err := c.cfg.Config.Exchange(r.Context(), r.URL.Query().Get("code"))
	if err != nil {
		fmt.Printf("%v\n", err)
	}

	err = serde.ToJSON(w, token)
	if err != nil {
		fmt.Printf("%v\n", err)
		return
	}

	if rawIDToken, ok := token.Extra("id_token").(string); ok {
		idToken, err := oidc.NewIDToken(rawIDToken)
		if err != nil {
			fmt.Printf("%v\n", err)
			return
		}
		err = serde.ToJSON(w, idToken)
		if err != nil {
			fmt.Printf("%v\n", err)
			return
		}
	}
}