sbbuilder: the two config drafts

The desktop config is a watched local file; the VM one goes through the
helper's config-get and config-set over ssh, so the helper validates what
lands in root's file. Field text is typed after the key's default, the
same check sb-builder makes on load.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

1 files changed, 79 insertions, 0 deletions

diff --git a/desktop/modules/sbbuilder/Store.qml b/desktop/modules/sbbuilder/Store.qml
new file mode 100644
index 0000000..b4a1ba1
--- /dev/null
+++ b/desktop/modules/sbbuilder/Store.qml
@@ -0,0 +1,79 @@
+// Copyright (C) 2026 Danilo M. <danix@danix.xyz>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License version 2 as
+// published by the Free Software Foundation.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+import QtQuick
+import "Toml.js" as T
+
+// One config.toml's draft, the store qtmaildir's Setting and BoolSetting
+// edit. Fields hand it text; it writes the type of the key's default, the
+// type sb-builder checks on load: a list is words split on spaces, a number
+// is a number, a switch is true or false.
+QtObject {
+    id: st
+    // The file as last read or written, the draft's start, and the draft.
+    property string text: ""
+    property string base: ""
+    property string draft: ""
+    readonly property bool dirty: st.draft !== st.base
+    // {section: {key: value}}, top-level keys under "".
+    property var defaults: ({})
+    property var invalid: ({})
+    readonly property bool valid: Object.keys(st.invalid).length === 0
+    property string error: ""
+    // Assigned only when the set changes, as Qtm does: a Repeater bound to a
+    // fresh array per keystroke rebuilds the row being typed in.
+    property var manifests: []
+    onDraftChanged: {
+        const k = T.entries(st.draft, "manifests").map(e => e.key);
+        if (JSON.stringify(k) !== JSON.stringify(st.manifests)) st.manifests = k;
+    }
+
+    function fallback(section, key) { return (st.defaults[section] || {})[key]; }
+    function show(v) { return v === undefined ? undefined : Array.isArray(v) ? v.join(" ") : String(v); }
+    function placeholder(section, key) { return st.show(st.fallback(section, key)) ?? ""; }
+
+    function get(section, key) { return st.show(T.get(st.draft, section, key)); }
+    // The effective value, typed: the file's, else the default.
+    function value(section, key) { return T.get(st.draft, section, key) ?? st.fallback(section, key); }
+    function entries(section) { return T.entries(st.draft, section); }
+    function put(section, key, v) {
+        try { st.draft = T.set(st.draft, section, key, v); } catch (e) { st.error = e.message; }
+    }
+    // A field's text; null or "" unsets.
+    function set(section, key, t) {
+        if (t === null || t === "") return st.put(section, key, null);
+        const d = st.fallback(section, key);
+        st.put(section, key, Array.isArray(d) ? t.split(/\s+/).filter(x => x !== "")
+                           : typeof d === "number" ? Number(t)
+                           : typeof d === "boolean" ? t === "true" : t);
+    }
+    function remove(section, key) { st.draft = T.remove(st.draft, section, key); }
+
+    function markInvalid(id, bad) {
+        if (!!st.invalid[id] === bad) return;
+        const next = Object.assign({}, st.invalid);
+        if (bad) next[id] = true; else delete next[id];
+        st.invalid = next;
+    }
+
+    // The file as read: a clean draft follows it, a dirty one is kept and
+    // its save is refused.
+    function loaded(t) {
+        st.text = t;
+        if (!st.dirty) { st.base = t; st.draft = t; }
+    }
+    function discard() {
+        st.error = "";
+        st.invalid = ({});
+        st.base = st.text;
+        st.draft = st.text;
+    }
+}