From 60bdc926dd7235fd55930ebd5b30c2e346f8ca59 Mon Sep 17 00:00:00 2001
From: xengineering <me@xengineering.eu>
Date: Thu, 13 Aug 2026 20:53:24 +0200
Subject: WIP: Add JSON-based API under `/api`

TODO: Not all the information is provided there.

This commit provides an unstable JSON API for communication with an
upcoming Dart frontend.

Later it might be part of the public interface for integration into
other services. For this step it has to be ensured the semantics are not
changing a lot in the future which is currently out of scope.
---
 view/json.go | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 view/json.go

(limited to 'view/json.go')

diff --git a/view/json.go b/view/json.go
new file mode 100644
index 0000000..5f3a30c
--- /dev/null
+++ b/view/json.go
@@ -0,0 +1,65 @@
+package view
+
+import (
+	"encoding/json"
+	"io"
+	"log"
+	"net/http"
+	"strconv"
+
+	"xengineering.eu/ceres/model"
+)
+
+func CreateJSON[O model.Object](db *model.DB, constructor func() model.Object) http.Handler {
+	return http.HandlerFunc(
+		func(w http.ResponseWriter, r *http.Request) {
+			buf, err := io.ReadAll(r.Body)
+			if err != nil {
+				http.Error(w, err.Error(), http.StatusInternalServerError)
+				return
+			}
+
+			object := constructor()
+			err = json.Unmarshal(buf, &object)
+			if err != nil {
+				http.Error(w, err.Error(), http.StatusBadRequest)
+				return
+			}
+
+			err = db.Transaction(object.Create)
+			if err != nil {
+				log.Println("Could not create object.")
+				http.Error(w, "Could not create object.", http.StatusBadRequest)
+				return
+			}
+		},
+	)
+}
+
+func ReadJSON[O model.Object](db *model.DB, constructor func() model.Object) http.Handler {
+	return http.HandlerFunc(
+		func(w http.ResponseWriter, r *http.Request) {
+			object := constructor()
+
+			id, err := strconv.Atoi(r.PathValue("id"))
+			if err != nil {
+				// TODO
+				return
+			}
+			object.SetID(id)
+
+			err = db.Transaction(object.Read)
+			if err != nil {
+				// TODO
+				return
+			}
+
+			w.Header().Set("Content-Type", "application/json")
+			err = json.NewEncoder(w).Encode(object)
+			if err != nil {
+				// TODO
+				return
+			}
+		},
+	)
+}
-- 
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