108 lines
2.6 KiB
Go
108 lines
2.6 KiB
Go
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package errors
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import (
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"errors"
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"html/template"
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"net/http"
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"github.com/go-kit/kit/log/level"
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"go.mindeco.de/http/auth"
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"go.mindeco.de/http/render"
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"go.mindeco.de/logging"
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"github.com/ssb-ngi-pointer/go-ssb-room/roomdb"
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"github.com/ssb-ngi-pointer/go-ssb-room/web/i18n"
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)
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type ErrorHandler struct {
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locHelper *i18n.Helper
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render *render.Renderer
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}
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func NewErrorHandler(locHelper *i18n.Helper) *ErrorHandler {
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return &ErrorHandler{
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locHelper: locHelper,
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}
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}
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// SetRenderer needs to update the rendere later since we need to pass ErrorHandler into render.New (ie. befor we get the pointer for r)
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func (eh *ErrorHandler) SetRenderer(r *render.Renderer) {
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eh.render = r
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}
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func (eh *ErrorHandler) Handle(rw http.ResponseWriter, req *http.Request, code int, err error) {
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var ih = i18n.LocalizerFromRequest(eh.locHelper, req)
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// default, unlocalized message
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msg := err.Error()
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// localize some specific error messages
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var (
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aa roomdb.ErrAlreadyAdded
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pnf PageNotFound
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br ErrBadRequest
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f ErrForbidden
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)
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switch {
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case err == ErrNotAuthorized:
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code = http.StatusForbidden
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msg = ih.LocalizeSimple("ErrorAuthBadLogin")
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case err == auth.ErrBadLogin:
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msg = ih.LocalizeSimple("ErrorAuthBadLogin")
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case errors.Is(err, roomdb.ErrNotFound):
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code = http.StatusNotFound
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msg = ih.LocalizeSimple("ErrorNotFound")
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case errors.As(err, &aa):
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msg = ih.LocalizeWithData("ErrorAlreadyAdded", map[string]string{
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"Feed": aa.Ref.Ref(),
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})
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case errors.As(err, &pnf):
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code = http.StatusNotFound
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msg = ih.LocalizeWithData("ErrorPageNotFound", map[string]string{
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"Path": pnf.Path,
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})
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case errors.As(err, &br):
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code = http.StatusBadRequest
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// TODO: we could localize all the "Where:" as labels, too
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// buttt it feels like overkill right now
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msg = ih.LocalizeWithData("ErrorBadRequest", map[string]string{
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"Where": br.Where,
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"Details": br.Details.Error(),
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})
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case errors.As(err, &f):
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code = http.StatusForbidden
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msg = ih.LocalizeWithData("ErrorForbidden", map[string]string{
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"Details": f.Details.Error(),
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})
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}
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data := errorTemplateData{
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Err: template.HTML(msg),
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// TODO: localize status codes? might be fine with a few
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Status: http.StatusText(code),
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StatusCode: code,
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}
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renderErr := eh.render.Render(rw, req, "error.tmpl", code, data)
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if renderErr != nil {
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logger := logging.FromContext(req.Context())
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level.Error(logger).Log("event", "error template renderfailed",
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"orig-err", err,
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"render-err", renderErr,
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)
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}
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}
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type errorTemplateData struct {
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StatusCode int
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Status string
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Err template.HTML
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}
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