Start creating struct-based JSON encoding for API endpoints

api/handler.go

@@ -0,0 +1,64 @@
+package api
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+
+	"github.com/Gleipnir-Technology/nidus-sync/auth"
+	"github.com/Gleipnir-Technology/nidus-sync/db"
+	"github.com/Gleipnir-Technology/nidus-sync/db/models"
+	"github.com/Gleipnir-Technology/nidus-sync/html"
+	nhttp "github.com/Gleipnir-Technology/nidus-sync/http"
+	"github.com/Gleipnir-Technology/nidus-sync/platform"
+	"github.com/rs/zerolog/log"
+)
+
+type handlerFunctionGet[T any] func(context.Context, *http.Request, *models.Organization, *models.User) (*T, *nhttp.ErrorWithStatus)
+type wrappedHandler func(http.ResponseWriter, *http.Request)
+type contentAuthenticated[T any] struct {
+	C      T
+	Config html.ContentConfig
+	User   platform.User
+}
+
+type ErrorAPI struct {
+	Message string `json:"message"`
+}
+
+// w http.ResponseWriter, r *http.Request, u *models.User) {
+func authenticatedHandlerJSON[T any](f handlerFunctionGet[T]) http.Handler {
+	return auth.NewEnsureAuth(func(w http.ResponseWriter, r *http.Request, u *models.User) {
+		ctx := r.Context()
+		org, err := u.Organization().One(ctx, db.PGInstance.BobDB)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		if org == nil {
+			http.Error(w, "nil org", http.StatusInternalServerError)
+			return
+		}
+		var body []byte
+		resp, e := f(ctx, r, org, u)
+		w.Header().Set("Content-Type", "application/json")
+		//log.Info().Str("template", template).Err(e).Msg("handler done")
+		if e != nil {
+			log.Warn().Int("status", e.Status).Err(e).Str("user message", e.Message).Msg("Responding with an error from sync pages")
+			body, err = json.Marshal(ErrorAPI{Message: e.Error()})
+			if err != nil {
+				log.Error().Err(err).Msg("failed to marshal error")
+				http.Error(w, "{\"message\": \"boom. I can't even tell you what went wrong\"}", http.StatusInternalServerError)
+				return
+			}
+			http.Error(w, string(body), e.Status)
+			return
+		}
+		body, err = json.Marshal(resp)
+		if err != nil {
+			http.Error(w, "{\"message\": \"failed to marshal json\"}", http.StatusInternalServerError)
+			return
+		}
+		w.Write(body)
+	})
+}