feat(backend): add data export

backend/routes/auth/export.go

@@ -0,0 +1,74 @@
+package auth
+
+import (
+	"net/http"
+	"time"
+
+	"codeberg.org/u1f320/pronouns.cc/backend/db"
+	"codeberg.org/u1f320/pronouns.cc/backend/log"
+	"codeberg.org/u1f320/pronouns.cc/backend/server"
+	"github.com/go-chi/render"
+)
+
+func (s *Server) startExport(w http.ResponseWriter, r *http.Request) error {
+	ctx := r.Context()
+	claims, _ := server.ClaimsFromContext(ctx)
+
+	hasExport, err := s.DB.HasRecentExport(ctx, claims.UserID)
+	if err != nil {
+		log.Errorf("checking if user has recent export: %v", err)
+		return server.APIError{Code: server.ErrInternalServerError}
+	}
+	if hasExport {
+		return server.APIError{Code: server.ErrRecentExport}
+	}
+
+	req, err := http.NewRequestWithContext(ctx, "GET", s.ExporterPath+"/start/"+claims.UserID.String(), nil)
+	if err != nil {
+		log.Errorf("creating start export request: %v", err)
+		return server.APIError{Code: server.ErrInternalServerError}
+	}
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		log.Errorf("executing start export request: %v", err)
+		return server.APIError{Code: server.ErrInternalServerError}
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusAccepted {
+		log.Errorf("got non-%v code: %v", http.StatusAccepted, resp.StatusCode)
+		return server.APIError{
+			Code: server.ErrInternalServerError,
+		}
+	}
+
+	render.JSON(w, r, map[string]any{"started": true})
+	return nil
+}
+
+type dataExportResponse struct {
+	Path      string    `json:"path"`
+	CreatedAt time.Time `json:"created_at"`
+}
+
+func (s *Server) getExport(w http.ResponseWriter, r *http.Request) error {
+	ctx := r.Context()
+	claims, _ := server.ClaimsFromContext(ctx)
+
+	de, err := s.DB.UserExport(ctx, claims.UserID)
+	if err != nil {
+		if err == db.ErrNoExport {
+			return server.APIError{Code: server.ErrNotFound}
+		}
+
+		log.Errorf("getting export for user %v: %v", claims.UserID, err)
+		return err
+	}
+
+	render.JSON(w, r, dataExportResponse{
+		Path:      de.Path(),
+		CreatedAt: de.CreatedAt,
+	})
+	return nil
+}

backend/routes/auth/routes.go

@@ -17,6 +17,7 @@ type Server struct {
 	*server.Server
 
 	RequireInvite bool
+	ExporterPath  string
 }
 
 type userResponse struct {
@@ -54,6 +55,7 @@ func Mount(srv *server.Server, r chi.Router) {
 	s := &Server{
 		Server:        srv,
 		RequireInvite: os.Getenv("REQUIRE_INVITE") == "true",
+		ExporterPath:  "http://127.0.0.1:" + os.Getenv("EXPORTER_PORT"),
 	}
 
 	r.Route("/auth", func(r chi.Router) {
@@ -79,6 +81,9 @@ func Mount(srv *server.Server, r chi.Router) {
 		r.With(server.MustAuth).Post("/tokens", server.WrapHandler(s.createToken))
 		r.With(server.MustAuth).Delete("/tokens/{id}", server.WrapHandler(s.deleteToken))
 
+		r.With(server.MustAuth).Get("/export/start", server.WrapHandler(s.startExport))
+		r.With(server.MustAuth).Get("/export", server.WrapHandler(s.getExport))
+
 		// cancel user delete
 		// uses a special token, so handled in the function itself
 		r.Get("/cancel-delete", server.WrapHandler(s.cancelDelete))