1 files changed, 64 insertions, 0 deletions
diff --git a/view/common.go b/view/common.go
new file mode 100644
index 0000000..c371fa0
--- /dev/null
+++ b/view/common.go
@@ -0,0 +1,64 @@
+package view
+
+import (
+	"embed"
+	"html/template"
+	"net/http"
+	"strings"
+	"reflect"
+
+	"xengineering.eu/ceres/model"
+
+	"github.com/gorilla/mux"
+)
+
+//go:embed html/*.html
+var htmlFS embed.FS
+
+var html *template.Template
+
+func Init() {
+	html = template.Must(template.New("html").ParseFS(htmlFS, "html/*.html"))
+}
+
+func HandlerHTML(prototype model.ReadableData) http.HandlerFunc {
+	t := reflect.TypeOf(prototype).Elem()
+
+	tmpl := t.String()
+	tmpl = strings.TrimPrefix(tmpl, `model.`)
+	tmpl = strings.ToLower(tmpl)
+
+	return func(w http.ResponseWriter, r *http.Request) {
+		data := reflect.New(t).Interface().(model.ReadableData)
+		var err error
+
+		v := reflect.ValueOf(data).Elem()
+		if v.Kind() == reflect.Struct {
+			id, ok := mux.Vars(r)[`id`]
+			if ok {
+				f := v.FieldByName(`Id`)
+				if f.IsValid() && f.CanSet() && f.Kind() == reflect.String {
+					f.SetString(id)
+				} else {
+					http.Error(w, `Requested struct data does not have a settable string ID`, http.StatusBadRequest)
+					return
+				}
+			} else {
+				http.Error(w, `Requested struct data without giving an ID`, http.StatusBadRequest)
+				return
+			}
+		}
+
+		err = data.FromDB()
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		err = html.ExecuteTemplate(w, tmpl, data)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+	}
+}