Todoist-style: priorities P1-P4, estimates, FAB add form, Today view, natural quick add, drag-and-drop with haptics

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/src/lib/quickadd.ts

@@ -0,0 +1,92 @@
+// Natural-language quick add, Todoist style:
+//   "Pay rent tomorrow p1 @home #Sydney ~30m"
+// → title "Pay rent", due tomorrow, priority 1, context @home,
+//   project "Sydney" (matched by name prefix), estimate 30 min.
+import type { Project, Task } from "./types";
+
+export interface ParsedQuickAdd {
+  title: string;
+  priority?: Task["priority"];
+  due_date?: string;
+  context?: string;
+  project_id?: string;
+  estimate_min?: number;
+}
+
+const WEEKDAYS = ["sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday"];
+
+function iso(d: Date): string {
+  const y = d.getFullYear();
+  const m = String(d.getMonth() + 1).padStart(2, "0");
+  const day = String(d.getDate()).padStart(2, "0");
+  return `${y}-${m}-${day}`;
+}
+
+function parseDateWord(word: string): string | undefined {
+  const w = word.toLowerCase();
+  const today = new Date();
+  if (w === "today" || w === "tod") return iso(today);
+  if (w === "tomorrow" || w === "tmr" || w === "tom") {
+    const d = new Date(today);
+    d.setDate(d.getDate() + 1);
+    return iso(d);
+  }
+  if (/^\d{4}-\d{2}-\d{2}$/.test(w)) return w;
+  const wd = WEEKDAYS.findIndex((n) => n === w || n.slice(0, 3) === w);
+  if (wd >= 0) {
+    const d = new Date(today);
+    const delta = (wd - d.getDay() + 7) % 7 || 7; // always the *next* occurrence
+    d.setDate(d.getDate() + delta);
+    return iso(d);
+  }
+  return undefined;
+}
+
+function parseEstimate(token: string): number | undefined {
+  const m = token.match(/^~(?:(\d+)h)?(\d+)?m?$/i);
+  if (!m || (!m[1] && !m[2])) return undefined;
+  return (Number(m[1] ?? 0) * 60 + Number(m[2] ?? 0)) || undefined;
+}
+
+export function parseQuickAdd(input: string, projects: Project[]): ParsedQuickAdd {
+  const out: ParsedQuickAdd = { title: "" };
+  const rest: string[] = [];
+
+  for (const token of input.trim().split(/\s+/)) {
+    const p = token.match(/^p([1-4])$/i);
+    if (p && out.priority === undefined) {
+      out.priority = Number(p[1]) as Task["priority"];
+      continue;
+    }
+    if (token.startsWith("@") && token.length > 1 && out.context === undefined) {
+      out.context = token;
+      continue;
+    }
+    if (token.startsWith("#") && token.length > 1 && out.project_id === undefined) {
+      const name = token.slice(1).toLowerCase();
+      const match = projects.find(
+        (pr) => pr.status === "active" && pr.name.toLowerCase().startsWith(name),
+      );
+      if (match) {
+        out.project_id = match.id;
+        continue;
+      }
+    }
+    const est = parseEstimate(token);
+    if (est && out.estimate_min === undefined) {
+      out.estimate_min = est;
+      continue;
+    }
+    if (out.due_date === undefined) {
+      const due = parseDateWord(token);
+      if (due) {
+        out.due_date = due;
+        continue;
+      }
+    }
+    rest.push(token);
+  }
+
+  out.title = rest.join(" ");
+  return out;
+}