transactions.html can edit though needs some kinda user feedback of the changed row or something...

cmd/http/public/transactions.html

@@ -8,17 +8,17 @@
     </style>
     <script>
       function http(method, remote, callback, body) {
-         var xmlhttp = new XMLHttpRequest();
+         var xmlhttp = new XMLHttpRequest()
          xmlhttp.onreadystatechange = function() {
             if (xmlhttp.readyState == XMLHttpRequest.DONE) {
                callback(xmlhttp.responseText, xmlhttp.status)
             }
-         };
-         xmlhttp.open(method, remote, true);
+         }
+         xmlhttp.open(method, remote, true)
          if (typeof body == "undefined") {
             body = null
          }
-         xmlhttp.send(body);
+         xmlhttp.send(body)
       }
 
       function callback(responseBody, responseStatus) {
@@ -134,12 +134,16 @@
         const idx = btn.name.split("submit")[1]
         const form = btn.parentElement.parentElement
 
-        now.Value = form[`value${idx}`].value
+        now.Value = parseFloat(form[`value${idx}`].value)
         now.Name = form[`name${idx}`].value
         now.Description = form[`description`].value
         now.Date = form[`date`].value
 
-        if (JSON.stringify(old) === JSON.stringify(now)) {
+        var different = false
+        for(var k in old) {
+          different = different || old[k] != now[k]
+        }
+        if (!different) {
           return
         }
 
@@ -147,10 +151,10 @@
           if (status != 200)
             throw(`Unexpected status ${status}: ${body}`)
           load()
-        }, {
+        }, JSON.stringify({
           old: old,
           now: now,
-        })
+        }))
       }
 
       function stage(who, contributesToHouse) {

cmd/http/router.go

@@ -4,6 +4,7 @@ import (
 	"embed"
 	"encoding/json"
 	"fmt"
+	"io"
 	"io/fs"
 	"net/http"
 	"os"
@@ -110,7 +111,21 @@ func (router Router) APITransactions(w http.ResponseWriter, r *http.Request) {
 }
 
 func (router Router) APIAmend(w http.ResponseWriter, r *http.Request) {
-	http.Error(w, http.StatusText(http.StatusNotImplemented), http.StatusNotImplemented)
+	b, _ := io.ReadAll(r.Body)
+
+	var req struct {
+		Old ledger.Delta
+		Now ledger.Delta
+	}
+	if err := json.Unmarshal(b, &req); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	if err := router.files.Amend(req.Old, req.Now); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
 }
 
 func (router Router) APIReg(w http.ResponseWriter, r *http.Request) {

src/ledger/transaction.go

@@ -31,7 +31,10 @@ func (deltas Deltas) Transactions() Transactions {
 
 	slices.SortFunc(result, func(a, b Transaction) int {
 		if a[0].Date == b[0].Date {
-			return strings.Compare(a[0].Transaction, b[0].Transaction)
+			if a[0].Description == b[0].Description {
+				return strings.Compare(a[0].Transaction, b[0].Transaction)
+			}
+			return strings.Compare(a[0].Description, b[0].Description)
 		}
 		return strings.Compare(a[0].Date, b[0].Date)
 	})