feat: initial commit

internal/http/handler/webui/auth/provider.go

@@ -0,0 +1,78 @@
+package auth
+
+import (
+	"fmt"
+	"log/slog"
+	"net/http"
+
+	"forge.cadoles.com/wpetit/kouiz/internal/http/handler/webui/common"
+	"github.com/markbates/goth/gothic"
+	"github.com/pkg/errors"
+)
+
+func (h *Handler) handleProvider(w http.ResponseWriter, r *http.Request) {
+	if _, err := gothic.CompleteUserAuth(w, r); err == nil {
+		http.Redirect(w, r, "/auth/logout", http.StatusTemporaryRedirect)
+	} else {
+		gothic.BeginAuthHandler(w, r)
+	}
+}
+
+func (h *Handler) handleProviderCallback(w http.ResponseWriter, r *http.Request) {
+	gothUser, err := gothic.CompleteUserAuth(w, r)
+	if err != nil {
+		slog.ErrorContext(r.Context(), "could not complete user auth", slog.Any("error", errors.WithStack(err)))
+		http.Redirect(w, r, "/auth/logout", http.StatusTemporaryRedirect)
+		return
+	}
+
+	ctx := r.Context()
+
+	slog.DebugContext(ctx, "authenticated user", slog.Any("user", gothUser))
+
+	user := &User{
+		ID:          gothUser.UserID,
+		Provider:    gothUser.Provider,
+		AccessToken: gothUser.AccessToken,
+		IDToken:     gothUser.IDToken,
+	}
+
+	if err := h.storeSessionUser(w, r, user); err != nil {
+		slog.ErrorContext(r.Context(), "could not store session user", slog.Any("error", errors.WithStack(err)))
+		http.Redirect(w, r, "/auth/logout", http.StatusTemporaryRedirect)
+		return
+	}
+
+	http.Redirect(w, r, "/", http.StatusSeeOther)
+}
+
+func (h *Handler) handleLogout(w http.ResponseWriter, r *http.Request) {
+	user, err := h.retrieveSessionUser(r)
+	if err != nil && !errors.Is(err, errSessionNotFound) {
+		common.HandleError(w, r, errors.WithStack(err))
+		return
+	}
+
+	if err := h.clearSession(w, r); err != nil && !errors.Is(err, errSessionNotFound) {
+		common.HandleError(w, r, errors.WithStack(err))
+		return
+	}
+
+	if user == nil {
+		http.Redirect(w, r, "/", http.StatusTemporaryRedirect)
+		return
+	}
+
+	redirectURL := fmt.Sprintf("/auth/providers/%s/logout", user.Provider)
+
+	http.Redirect(w, r, redirectURL, http.StatusTemporaryRedirect)
+}
+
+func (h *Handler) handleProviderLogout(w http.ResponseWriter, r *http.Request) {
+	if err := gothic.Logout(w, r); err != nil {
+		common.HandleError(w, r, errors.WithStack(err))
+		return
+	}
+
+	http.Redirect(w, r, "/", http.StatusTemporaryRedirect)
+}