/
events.go
181 lines (149 loc) · 4.4 KB
/
events.go
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package server
import (
"context"
"encoding/json"
"net/http"
"time"
ihttp "github.com/Pigmice2733/peregrine-backend/internal/http"
"github.com/Pigmice2733/peregrine-backend/internal/store"
"github.com/Pigmice2733/peregrine-backend/internal/tba"
"github.com/gorilla/mux"
"github.com/pkg/errors"
)
// eventsHandler returns a handler to get all events in a given year.
func (s *Server) eventsHandler() http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
if err := s.updateEvents(r.Context()); err != nil {
ihttp.Error(w, http.StatusInternalServerError)
go s.Logger.WithError(err).Error("unable to update event data")
return
}
tbaDeleted := r.URL.Query().Get("tbaDeleted") == "true"
roles := ihttp.GetRoles(r)
userRealm, getRealmErr := ihttp.GetRealmID(r)
var events []store.Event
var err error
if roles.IsSuperAdmin {
events, err = s.Store.GetEvents(r.Context(), tbaDeleted)
} else {
if getRealmErr != nil {
events, err = s.Store.GetEventsFromRealm(r.Context(), nil, tbaDeleted)
} else {
events, err = s.Store.GetEventsFromRealm(r.Context(), &userRealm, tbaDeleted)
}
}
if err != nil {
ihttp.Error(w, http.StatusInternalServerError)
go s.Logger.WithError(err).Error("retrieving event data")
return
}
ihttp.Respond(w, &events, http.StatusOK)
}
}
// eventHandler returns a handler to get a specific event.
func (s *Server) eventHandler() http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
// Get new event data from TBA if event data is over 24 hours old
if err := s.updateEvents(r.Context()); err != nil {
ihttp.Error(w, http.StatusInternalServerError)
go s.Logger.WithError(err).Error("unable to update event data")
return
}
eventKey := mux.Vars(r)["eventKey"]
event, err := s.Store.GetEvent(r.Context(), eventKey)
if err != nil {
if _, ok := errors.Cause(err).(store.ErrNoResults); ok {
ihttp.Error(w, http.StatusNotFound)
return
}
ihttp.Error(w, http.StatusInternalServerError)
go s.Logger.WithError(err).Error("unable to retrieve event data")
return
}
if !s.checkEventAccess(event.RealmID, r) {
ihttp.Error(w, http.StatusForbidden)
return
}
ihttp.Respond(w, &event, http.StatusOK)
}
}
func (s *Server) upsertEventHandler() http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
eventKey := mux.Vars(r)["eventKey"]
var e store.Event
if err := json.NewDecoder(r.Body).Decode(&e); err != nil {
ihttp.Error(w, http.StatusUnprocessableEntity)
return
}
creatorRealm, err := ihttp.GetRealmID(r)
if err != nil {
ihttp.Error(w, http.StatusForbidden)
return
}
e.Key = eventKey
e.RealmID = &creatorRealm
created, err := s.Store.UpsertEvent(r.Context(), e)
if err != nil {
switch errors.Cause(err).(type) {
case store.ErrFKeyViolation:
ihttp.Error(w, http.StatusUnprocessableEntity)
default:
go s.Logger.WithError(err).Error("unable to upsert event data")
ihttp.Error(w, http.StatusInternalServerError)
}
return
}
if created {
w.WriteHeader(http.StatusCreated)
} else {
w.WriteHeader(http.StatusNoContent)
}
}
}
const expiry = 3.0
// Get new event data from TBA only if event data is over 3 hours old.
// Upsert event data into database.
func (s *Server) updateEvents(ctx context.Context) error {
now := time.Now()
if s.eventsLastUpdate == nil || now.Sub(*s.eventsLastUpdate).Hours() > expiry {
schema, err := s.Store.GetSchemaByYear(ctx, s.Year)
var schemaID *int64
if err != nil {
_, ok := err.(store.ErrNoResults)
if !ok {
return err
}
} else {
schemaID = &schema.ID
}
events, err := s.TBA.GetEvents(ctx, s.Year, schemaID)
if _, ok := errors.Cause(err).(tba.ErrNotModified); ok {
return nil
} else if err != nil {
return err
}
if err := s.Store.EventsUpsert(ctx, events); err != nil {
return errors.Wrap(err, "upserting events")
}
if err := s.Store.MarkEventsDeleted(ctx, events); err != nil {
return errors.Wrap(err, "marking missing events deleted")
}
s.eventsLastUpdate = &now
}
return nil
}
// Returns whether a user can access an event or its matches
func (s *Server) checkEventAccess(eventRealm *int64, r *http.Request) bool {
if eventRealm == nil {
return true
}
roles := ihttp.GetRoles(r)
if roles.IsSuperAdmin {
return true
}
userRealm, err := ihttp.GetRealmID(r)
if err != nil {
return false
}
return *eventRealm != userRealm
}