Initial commit: Voiced invoice desktop app

Offline-first invoicing app for Arun P, built by Bongbetic. - Tauri v2 (Rust) + React/TypeScript + IBM Carbon Design System UI - SQLite (rusqlite) storage with a persistent invoice-number series - Guided first-run setup, pre-filled vendor/bank details - Fixed-amount or rate x quantity line items (per sec/min/hour/session/unit) - GST as CGST+SGST or IGST, Indian amount-in-words - Optional signature, with a computer-generated note as fallback - Print-ready PDF export via @react-pdf/renderer - Windows cross-compile via cargo-xwin (NSIS installer) Co-authored-by: CommandCodeBot <noreply@commandcode.ai>
2026-10-03 23:07:51 +05:30
commit 3af9f3f66f
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@@ -0,0 +1,36 @@
+# Fallback CI: build the Windows installer on a Windows runner.
+# Requires a Gitea Actions runner labelled `windows` on git.bongbetic.com.
+# The primary build path is `npm run app:build:windows` (cross-compile via cargo-xwin).
+name: Windows build
+
+on:
+  workflow_dispatch:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  build:
+    runs-on: windows
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Install Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build the app
+        run: npm run app:build
+
+      - name: Upload installer
+        uses: actions/upload-artifact@v4
+        with:
+          name: voiced-windows
+          path: src-tauri/target/release/bundle/nsis/*.exe
@@ -0,0 +1,27 @@
+# Dependencies
+node_modules/
+
+# Build output
+dist/
+dist-ssr/
+
+# Rust / Tauri
+src-tauri/target/
+src-tauri/gen/
+xwin/
+*.pdb
+
+# Local env
+*.local
+.env
+.env.*
+
+# Database (runtime data lives in the OS app-data dir, never here)
+*.db
+*.db-journal
+*.sqlite
+
+# Editor / OS
+.DS_Store
+.vscode/
+.idea/
@@ -0,0 +1,95 @@
+# Voiced
+
+An offline-first desktop invoicing app for **Arun P**, built by **Bongbetic**.
+
+Voiced turns a few details into a clean, GST-ready PDF invoice. It keeps a running
+invoice-number series in a local database, remembers your vendor and bank details, and
+exports print-ready PDFs — no account, no network required.
+
+## Features
+
+- **Automatic invoice numbering** — a persistent series (e.g. `AP/2026-001`) that keeps
+  counting up, with a one-click "start a new series" that resets the counter.
+- **Guided first-run setup** — your name, address, contact, PAN, GSTIN, logo, signature and
+  bank details, pre-filled from your existing invoice and editable at any time.
+- **Two line-item modes** — a fixed amount, or a rate × quantity where the unit can be per
+  second / minute / hour / session / unit (e.g. 10 sessions × ₹2,500).
+- **GST support** — toggle taxes on/off and split as **CGST + SGST** (within state) or
+  **IGST** (inter-state), with live totals and Indian amount-in-words.
+- **Signatures** — attach a PNG/JPEG per invoice, or omit it and the invoice notes that it is
+  computer-generated and needs no signature.
+- **PDF export** — a print-ready A4 invoice styled to match the original `format.pdf`.
+- **Saved clients**, invoice history with re-export, and light/dark (Carbon g10/g100) themes.
+- **Input validation** for PAN, IFSC, GSTIN, email and phone.
+
+## Tech stack
+
+| Layer     | Choice                                                              |
+| --------- | ------------------------------------------------------------------- |
+| Shell     | [Tauri v2](https://v2.tauri.app/) (Rust core, WebView2 on Windows)  |
+| UI        | React + TypeScript + [IBM Carbon Design System](https://carbondesignsystem.com/) (`@carbon/react`) |
+| Fonts     | IBM Plex, self-hosted (works offline)                               |
+| Storage   | SQLite via `rusqlite` (bundled)                                     |
+| PDF       | `@react-pdf/renderer` with bundled IBM Plex                         |
+
+## Prerequisites
+
+- **Node.js 20+** and npm
+- **Rust** (stable) via [rustup](https://rustup.rs/)
+- Linux dev only: WebKitGTK 4.1, libsoup3, GTK3, librsvg, `pkg-config`, `clang`/`llvm`/`lld`
+
+## Development
+
+```bash
+npm install
+npm run app:dev        # launches the desktop app with hot reload
+```
+
+Other scripts:
+
+```bash
+npm run build          # type-check + build the web frontend
+npm run app:build      # package the app for the current platform
+```
+
+## Building for Windows (cross-compile from Linux/macOS)
+
+Tauri only supports the MSVC target. Cross-compiling uses [`cargo-xwin`](https://github.com/rust-cross/cargo-xwin)
+and produces an **NSIS installer** plus a portable `.exe`. A `.msi` still requires a real
+Windows host.
+
+```bash
+# one-time setup
+rustup target add x86_64-pc-windows-msvc
+cargo install --locked cargo-xwin
+# plus NSIS (makensis), LLVM/LLD and clang on the host
+
+npm run app:build:windows
+```
+
+Output lands in `src-tauri/target/x86_64-pc-windows-msvc/release/bundle/nsis/` and the
+portable binary in the sibling `release/` folder.
+
+## Where data lives
+
+| What                | Location                                                       |
+| ------------------- | ------------------------------------------------------------- |
+| Database            | `<app-data>/voiced.db` — on Windows `%APPDATA%\com.bongbetic.voiced\` |
+| Logos & signatures  | `<app-data>/assets/`                                          |
+
+## Project layout
+
+```
+src/                 React + Carbon frontend
+  views/             Onboarding · NewInvoice · InvoiceHistory · SeriesSettings · AppSettings
+  components/        AppShell · InvoicePreview · ImagePicker
+  pdf/               InvoiceDocument (react-pdf template)
+  lib/               api · types · invoice · numberToWords · validators · format · pdf
+src-tauri/           Rust backend (Tauri commands, SQLite schema, asset store)
+public/brand/        Bongbetic + vendor brand assets
+public/fonts/        IBM Plex (woff/woff2)
+```
+
+## Ownership
+
+© Bongbetic. All rights reserved. This is a private application.
@@ -0,0 +1,14 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/png" href="/brand/favicon-32.png" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta name="color-scheme" content="light dark" />
+    <title>Voiced</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>
@@ -0,0 +1,40 @@
+{
+  "name": "voiced",
+  "private": true,
+  "version": "0.1.0",
+  "description": "Voiced — offline invoicing desktop app by Bongbetic",
+  "type": "module",
+  "author": "Bongbetic",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc --noEmit && vite build",
+    "preview": "vite preview",
+    "tauri": "tauri",
+    "app:dev": "tauri dev",
+    "app:build": "tauri build",
+    "app:build:windows": "tauri build --runner cargo-xwin --target x86_64-pc-windows-msvc"
+  },
+  "dependencies": {
+    "@carbon/icons-react": "^11.89.0",
+    "@carbon/react": "^1.117.0",
+    "@carbon/styles": "^1.116.0",
+    "@ibm/plex": "^6.4.1",
+    "@react-pdf/renderer": "^4.9.0",
+    "@tauri-apps/api": "^2.12.1",
+    "@tauri-apps/plugin-dialog": "^2.8.1",
+    "@tauri-apps/plugin-opener": "^2.7.0",
+    "react": "^19.3.0",
+    "react-dom": "^19.3.0",
+    "react-is": "^19.3.0"
+  },
+  "devDependencies": {
+    "@tauri-apps/cli": "^2.12.1",
+    "@types/node": "^26.6.4",
+    "@types/react": "^19.2.0",
+    "@types/react-dom": "^19.2.0",
+    "@vitejs/plugin-react": "^5.2.0",
+    "sass": "^1.105.1",
+    "typescript": "^5.9.3",
+    "vite": "^7.3.6"
+  }
+}
@@ -0,0 +1,40 @@
+<?xml version="1.0" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
+ "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
+<svg version="1.0" xmlns="http://www.w3.org/2000/svg"
+ width="383.692000pt" height="497.251424pt" viewBox="0 0 383.692000 497.251424"
+ preserveAspectRatio="xMidYMid meet">
+<metadata>
+Created by potrace 1.16, written by Peter Selinger 2001-2019
+</metadata>
+<g transform="translate(2.765143,475.709540) scale(0.100000,-0.100000)"
+fill="#000000" stroke="none">
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+</g>
+</svg>
@@ -0,0 +1,34 @@
+[package]
+name = "voiced"
+version = "0.1.0"
+description = "Voiced — offline invoicing desktop app by Bongbetic"
+authors = ["Bongbetic"]
+edition = "2021"
+rust-version = "1.77"
+
+# The `_lib` suffix keeps the library name distinct from the binary name on Windows.
+[lib]
+name = "voiced_lib"
+crate-type = ["staticlib", "cdylib", "rlib"]
+
+[build-dependencies]
+tauri-build = { version = "2", features = [] }
+
+[dependencies]
+tauri = { version = "2", features = [] }
+tauri-plugin-dialog = "2"
+tauri-plugin-opener = "2"
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+rusqlite = { version = "0.40", features = ["bundled"] }
+chrono = { version = "0.4", features = ["serde"] }
+uuid = { version = "1", features = ["v4"] }
+thiserror = "2"
+base64 = "0.22"
+
+[profile.release]
+codegen-units = 1
+lto = true
+opt-level = "s"
+panic = "abort"
+strip = true
@@ -0,0 +1,3 @@
+fn main() {
+    tauri_build::build()
+}
@@ -0,0 +1,11 @@
+{
+  "$schema": "../gen/schemas/desktop-schema.json",
+  "identifier": "default",
+  "description": "Capabilities for the Voiced main window.",
+  "windows": ["main"],
+  "permissions": [
+    "core:default",
+    "dialog:default",
+    "opener:default"
+  ]
+}
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+  <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+  <background android:drawable="@color/ic_launcher_background"/>
+</adaptive-icon>
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <color name="ic_launcher_background">#FFFFFF</color>
+</resources>
@@ -0,0 +1,116 @@
+use crate::AppState;
+use base64::{engine::general_purpose::STANDARD, Engine};
+use std::path::{Path, PathBuf};
+use tauri::State;
+
+fn safe_kind(kind: &str) -> String {
+    kind.chars()
+        .filter(|c| c.is_ascii_alphanumeric() || *c == '-' || *c == '_')
+        .collect::<String>()
+        .to_lowercase()
+}
+
+fn sanitize_name(name: &str) -> String {
+    name.chars()
+        .filter(|c| c.is_ascii_alphanumeric() || *c == '.' || *c == '-' || *c == '_')
+        .collect()
+}
+
+fn extension_of(path: &str) -> String {
+    Path::new(path)
+        .extension()
+        .and_then(|e| e.to_str())
+        .map(|e| e.to_lowercase())
+        .unwrap_or_else(|| "png".to_string())
+}
+
+fn mime_for(ext: &str) -> &'static str {
+    match ext {
+        "jpg" | "jpeg" => "image/jpeg",
+        "svg" => "image/svg+xml",
+        "webp" => "image/webp",
+        "gif" => "image/gif",
+        _ => "image/png",
+    }
+}
+
+fn assets_dir(state: &State<AppState>) -> Result<PathBuf, String> {
+    let dir = state.data_dir.join("assets");
+    std::fs::create_dir_all(&dir).map_err(|e| e.to_string())?;
+    Ok(dir)
+}
+
+fn write_asset(state: &State<AppState>, kind: &str, ext: &str, bytes: &[u8]) -> Result<String, String> {
+    let dir = assets_dir(state)?;
+    let file = format!(
+        "{}-{}.{}",
+        safe_kind(kind),
+        uuid::Uuid::new_v4().simple(),
+        ext
+    );
+    let path = dir.join(file);
+    std::fs::write(&path, bytes).map_err(|e| e.to_string())?;
+    Ok(path.to_string_lossy().to_string())
+}
+
+/// Copy a user-picked file into the app's asset store and return the stored path.
+#[tauri::command]
+pub fn import_asset(
+    state: State<AppState>,
+    source_path: String,
+    kind: String,
+) -> Result<String, String> {
+    let bytes = std::fs::read(&source_path).map_err(|e| e.to_string())?;
+    let ext = extension_of(&source_path);
+    write_asset(&state, &kind, &ext, &bytes)
+}
+
+/// Used when the frontend already holds the bytes (base64) instead of a path.
+#[tauri::command]
+pub fn save_asset_bytes(
+    state: State<AppState>,
+    kind: String,
+    file_name: String,
+    data_base64: String,
+) -> Result<String, String> {
+    let bytes = STANDARD
+        .decode(data_base64.as_bytes())
+        .map_err(|e| e.to_string())?;
+    let ext = extension_of(&sanitize_name(&file_name));
+    write_asset(&state, &kind, &ext, &bytes)
+}
+
+/// Read a stored asset back as a data URI so it can be embedded in the PDF.
+#[tauri::command]
+pub fn read_asset_data_uri(path: String) -> Result<String, String> {
+    let bytes = std::fs::read(&path).map_err(|e| e.to_string())?;
+    let ext = extension_of(&path);
+    Ok(format!(
+        "data:{};base64,{}",
+        mime_for(&ext),
+        STANDARD.encode(bytes)
+    ))
+}
+
+#[tauri::command]
+pub fn remove_asset(state: State<AppState>, path: String) -> Result<(), String> {
+    let dir = assets_dir(&state)?;
+    let target = PathBuf::from(&path);
+    // Only allow deleting files inside the managed assets directory.
+    if target.starts_with(&dir) && target.exists() {
+        std::fs::remove_file(&target).map_err(|e| e.to_string())?;
+    }
+    Ok(())
+}
+
+/// Write a base64 payload (e.g. a generated PDF) to a user-chosen path.
+#[tauri::command]
+pub fn save_binary_file(path: String, data_base64: String) -> Result<(), String> {
+    let bytes = STANDARD
+        .decode(data_base64.as_bytes())
+        .map_err(|e| e.to_string())?;
+    if let Some(parent) = Path::new(&path).parent() {
+        std::fs::create_dir_all(parent).ok();
+    }
+    std::fs::write(&path, bytes).map_err(|e| e.to_string())
+}
@@ -0,0 +1,78 @@
+use crate::models::Client;
+use crate::AppState;
+use rusqlite::{params, Row};
+use tauri::State;
+
+fn map_client(row: &Row) -> rusqlite::Result<Client> {
+    Ok(Client {
+        id: Some(row.get(0)?),
+        name: row.get(1)?,
+        address: row.get(2)?,
+        gstin: row.get(3)?,
+        state_code: row.get(4)?,
+        po_number: row.get(5)?,
+        created_at: row.get(6)?,
+    })
+}
+
+#[tauri::command]
+pub fn list_clients(state: State<AppState>) -> Result<Vec<Client>, String> {
+    let conn = state.db.lock().map_err(|e| e.to_string())?;
+    let mut stmt = conn
+        .prepare(
+            "SELECT id, name, address, gstin, state_code, po_number, created_at
+             FROM clients ORDER BY name COLLATE NOCASE ASC",
+        )
+        .map_err(|e| e.to_string())?;
+    let rows = stmt
+        .query_map([], map_client)
+        .map_err(|e| e.to_string())?
+        .collect::<rusqlite::Result<Vec<_>>>()
+        .map_err(|e| e.to_string())?;
+    Ok(rows)
+}
+
+#[tauri::command]
+pub fn save_client(state: State<AppState>, client: Client) -> Result<Client, String> {
+    let conn = state.db.lock().map_err(|e| e.to_string())?;
+    let id = match client.id {
+        Some(id) => {
+            conn.execute(
+                "UPDATE clients SET name=?1, address=?2, gstin=?3, state_code=?4, po_number=?5 WHERE id=?6",
+                params![client.name, client.address, client.gstin, client.state_code, client.po_number, id],
+            )
+            .map_err(|e| e.to_string())?;
+            id
+        }
+        None => {
+            conn.execute(
+                "INSERT INTO clients (name, address, gstin, state_code, po_number, created_at)
+                 VALUES (?1, ?2, ?3, ?4, ?5, ?6)",
+                params![
+                    client.name,
+                    client.address,
+                    client.gstin,
+                    client.state_code,
+                    client.po_number,
+                    chrono::Utc::now().to_rfc3339()
+                ],
+            )
+            .map_err(|e| e.to_string())?;
+            conn.last_insert_rowid()
+        }
+    };
+    conn.query_row(
+        "SELECT id, name, address, gstin, state_code, po_number, created_at FROM clients WHERE id = ?1",
+        params![id],
+        map_client,
+    )
+    .map_err(|e| e.to_string())
+}
+
+#[tauri::command]
+pub fn delete_client(state: State<AppState>, id: i64) -> Result<(), String> {
+    let conn = state.db.lock().map_err(|e| e.to_string())?;
+    conn.execute("DELETE FROM clients WHERE id = ?1", params![id])
+        .map_err(|e| e.to_string())?;
+    Ok(())
+}
@@ -0,0 +1,255 @@
+use crate::db::format_number;
+use crate::models::{Invoice, InvoiceInput, InvoiceItem, InvoiceSummary};
+use crate::AppState;
+use rusqlite::{params, Connection, OptionalExtension, Row};
+use tauri::State;
+
+const INVOICE_COLS: &str = "id, number, series_id, invoice_date, due_date, client_id, client_name,
+    client_address, client_gstin, po_number, place_of_supply_state_code, subtotal, discount,
+    tax_type, tax_rate, cgst_amount, sgst_amount, igst_amount, total, amount_in_words,
+    bank_account_id, bank_snapshot, signature_path, notes, status, created_at, updated_at";
+
+fn map_invoice(row: &Row) -> rusqlite::Result<Invoice> {
+    Ok(Invoice {
+        id: row.get(0)?,
+        number: row.get(1)?,
+        series_id: row.get(2)?,
+        invoice_date: row.get(3)?,
+        due_date: row.get(4)?,
+        client_id: row.get(5)?,
+        client_name: row.get(6)?,
+        client_address: row.get(7)?,
+        client_gstin: row.get(8)?,
+        po_number: row.get(9)?,
+        place_of_supply_state_code: row.get(10)?,
+        subtotal: row.get(11)?,
+        discount: row.get(12)?,
+        tax_type: row.get(13)?,
+        tax_rate: row.get(14)?,
+        cgst_amount: row.get(15)?,
+        sgst_amount: row.get(16)?,
+        igst_amount: row.get(17)?,
+        total: row.get(18)?,
+        amount_in_words: row.get(19)?,
+        bank_account_id: row.get(20)?,
+        bank_snapshot: row.get(21)?,
+        signature_path: row.get(22)?,
+        notes: row.get(23)?,
+        status: row.get(24)?,
+        created_at: row.get(25)?,
+        updated_at: row.get(26)?,
+        items: Vec::new(),
+    })
+}
+
+fn fetch_items(conn: &Connection, invoice_id: i64) -> rusqlite::Result<Vec<InvoiceItem>> {
+    let mut stmt = conn.prepare(
+        "SELECT id, description, mode, rate, unit, quantity, amount, sort_order
+         FROM invoice_items WHERE invoice_id = ?1 ORDER BY sort_order ASC, id ASC",
+    )?;
+    let rows = stmt.query_map(params![invoice_id], |row| {
+        Ok(InvoiceItem {
+            id: Some(row.get(0)?),
+            description: row.get(1)?,
+            mode: row.get(2)?,
+            rate: row.get(3)?,
+            unit: row.get(4)?,
+            quantity: row.get(5)?,
+            amount: row.get(6)?,
+            sort_order: row.get(7)?,
+        })
+    })?;
+    rows.collect()
+}
+
+fn fetch_invoice(conn: &Connection, id: i64) -> rusqlite::Result<Invoice> {
+    let mut invoice = conn.query_row(
+        &format!("SELECT {} FROM invoices WHERE id = ?1", INVOICE_COLS),
+        params![id],
+        map_invoice,
+    )?;
+    invoice.items = fetch_items(conn, id)?;
+    Ok(invoice)
+}
+
+#[tauri::command]
+pub fn peek_next_invoice_number(state: State<AppState>) -> Result<String, String> {
+    let conn = state.db.lock().map_err(|e| e.to_string())?;
+    let series: Option<(String, i64, i64)> = conn
+        .query_row(
+            "SELECT prefix, padding, next_number FROM invoice_series
+             WHERE is_active = 1 ORDER BY id DESC LIMIT 1",
+            [],
+            |r| Ok((r.get(0)?, r.get(1)?, r.get(2)?)),
+        )
+        .optional()
+        .map_err(|e| e.to_string())?;
+    match series {
+        Some((prefix, padding, next)) => Ok(format_number(&prefix, padding, next)),
+        None => Err("No active invoice series. Create one under Series.".into()),
+    }
+}
+
+#[tauri::command]
+pub fn create_invoice(state: State<AppState>, input: InvoiceInput) -> Result<Invoice, String> {
+    let mut conn = state.db.lock().map_err(|e| e.to_string())?;
+    let tx = conn.transaction().map_err(|e| e.to_string())?;
+
+    let series = tx
+        .query_row(
+            "SELECT id, prefix, padding, next_number FROM invoice_series
+             WHERE is_active = 1 ORDER BY id DESC LIMIT 1",
+            [],
+            |r| {
+                Ok((
+                    r.get::<_, i64>(0)?,
+                    r.get::<_, String>(1)?,
+                    r.get::<_, i64>(2)?,
+                    r.get::<_, i64>(3)?,
+                ))
+            },
+        )
+        .optional()
+        .map_err(|e| e.to_string())?
+        .ok_or_else(|| "No active invoice series. Create one under Series.".to_string())?;
+
+    let (series_id, prefix, padding, next_number) = series;
+    let number = format_number(&prefix, padding, next_number);
+
+    // Persist the client first when the user asked to save a new one.
+    let client_id = match input.client_id {
+        Some(id) => Some(id),
+        None if input.save_client && !input.client_name.trim().is_empty() => {
+            tx.execute(
+                "INSERT INTO clients (name, address, gstin, state_code, po_number, created_at)
+                 VALUES (?1, ?2, ?3, ?4, ?5, ?6)",
+                params![
+                    input.client_name,
+                    input.client_address,
+                    input.client_gstin,
+                    input.place_of_supply_state_code,
+                    input.po_number,
+                    chrono::Utc::now().to_rfc3339()
+                ],
+            )
+            .map_err(|e| e.to_string())?;
+            Some(tx.last_insert_rowid())
+        }
+        None => None,
+    };
+
+    let now = chrono::Utc::now().to_rfc3339();
+    tx.execute(
+        r#"INSERT INTO invoices
+             (number, series_id, invoice_date, due_date, client_id, client_name, client_address,
+              client_gstin, po_number, place_of_supply_state_code, subtotal, discount, tax_type,
+              tax_rate, cgst_amount, sgst_amount, igst_amount, total, amount_in_words,
+              bank_account_id, bank_snapshot, signature_path, notes, status, created_at, updated_at)
+           VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9, ?10, ?11, ?12, ?13, ?14, ?15, ?16, ?17,
+                   ?18, ?19, ?20, ?21, ?22, ?23, 'issued', ?24, ?24)"#,
+        params![
+            number,
+            series_id,
+            input.invoice_date,
+            input.due_date,
+            client_id,
+            input.client_name,
+            input.client_address,
+            input.client_gstin,
+            input.po_number,
+            input.place_of_supply_state_code,
+            input.subtotal,
+            input.discount,
+            input.tax_type,
+            input.tax_rate,
+            input.cgst_amount,
+            input.sgst_amount,
+            input.igst_amount,
+            input.total,
+            input.amount_in_words,
+            input.bank_account_id,
+            input.bank_snapshot,
+            input.signature_path,
+            input.notes,
+            now,
+        ],
+    )
+    .map_err(|e| e.to_string())?;
+    let invoice_id = tx.last_insert_rowid();
+
+    {
+        let mut stmt = tx
+            .prepare(
+                "INSERT INTO invoice_items
+                   (invoice_id, description, mode, rate, unit, quantity, amount, sort_order)
+                 VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8)",
+            )
+            .map_err(|e| e.to_string())?;
+        for (i, item) in input.items.iter().enumerate() {
+            stmt.execute(params![
+                invoice_id,
+                item.description,
+                item.mode,
+                item.rate,
+                item.unit,
+                item.quantity,
+                item.amount,
+                i as i64,
+            ])
+            .map_err(|e| e.to_string())?;
+        }
+    }
+
+    // Advance the serial for the next invoice in this series.
+    tx.execute(
+        "UPDATE invoice_series SET next_number = next_number + 1 WHERE id = ?1",
+        params![series_id],
+    )
+    .map_err(|e| e.to_string())?;
+
+    tx.commit().map_err(|e| e.to_string())?;
+
+    fetch_invoice(&conn, invoice_id).map_err(|e| e.to_string())
+}
+
+#[tauri::command]
+pub fn list_invoices(state: State<AppState>) -> Result<Vec<InvoiceSummary>, String> {
+    let conn = state.db.lock().map_err(|e| e.to_string())?;
+    let mut stmt = conn
+        .prepare(
+            "SELECT id, number, invoice_date, due_date, client_name, total, status, created_at
+             FROM invoices ORDER BY id DESC",
+        )
+        .map_err(|e| e.to_string())?;
+    let rows = stmt
+        .query_map([], |row| {
+            Ok(InvoiceSummary {
+                id: row.get(0)?,
+                number: row.get(1)?,
+                invoice_date: row.get(2)?,
+                due_date: row.get(3)?,
+                client_name: row.get(4)?,
+                total: row.get(5)?,
+                status: row.get(6)?,
+                created_at: row.get(7)?,
+            })
+        })
+        .map_err(|e| e.to_string())?
+        .collect::<rusqlite::Result<Vec<_>>>()
+        .map_err(|e| e.to_string())?;
+    Ok(rows)
+}
+
+#[tauri::command]
+pub fn get_invoice(state: State<AppState>, id: i64) -> Result<Invoice, String> {
+    let conn = state.db.lock().map_err(|e| e.to_string())?;
+    fetch_invoice(&conn, id).map_err(|e| e.to_string())
+}
+
+#[tauri::command]
+pub fn delete_invoice(state: State<AppState>, id: i64) -> Result<(), String> {
+    let conn = state.db.lock().map_err(|e| e.to_string())?;
+    conn.execute("DELETE FROM invoices WHERE id = ?1", params![id])
+        .map_err(|e| e.to_string())?;
+    Ok(())
+}
@@ -0,0 +1,5 @@
+pub mod assets;
+pub mod clients;
+pub mod invoice;
+pub mod series;
+pub mod settings;
@@ -0,0 +1,83 @@
+use crate::db::format_number;
+use crate::models::InvoiceSeries;
+use crate::AppState;
+use rusqlite::{params, Row};
+use tauri::State;
+
+fn map_series(row: &Row) -> rusqlite::Result<InvoiceSeries> {
+    let prefix: String = row.get(1)?;
+    let padding: i64 = row.get(2)?;
+    let next_number: i64 = row.get(3)?;
+    Ok(InvoiceSeries {
+        id: row.get(0)?,
+        next_invoice_number: format_number(&prefix, padding, next_number),
+        prefix,
+        padding,
+        next_number,
+        is_active: row.get::<_, i64>(4)? != 0,
+        created_at: row.get(5)?,
+    })
+}
+
+const SERIES_SELECT: &str =
+    "SELECT id, prefix, padding, next_number, is_active, created_at FROM invoice_series";
+
+#[tauri::command]
+pub fn get_active_series(state: State<AppState>) -> Result<Option<InvoiceSeries>, String> {
+    let conn = state.db.lock().map_err(|e| e.to_string())?;
+    let mut stmt = conn
+        .prepare(&format!(
+            "{} WHERE is_active = 1 ORDER BY id DESC LIMIT 1",
+            SERIES_SELECT
+        ))
+        .map_err(|e| e.to_string())?;
+    let mut rows = stmt.query_map([], map_series).map_err(|e| e.to_string())?;
+    match rows.next() {
+        Some(r) => Ok(Some(r.map_err(|e| e.to_string())?)),
+        None => Ok(None),
+    }
+}
+
+#[tauri::command]
+pub fn list_series(state: State<AppState>) -> Result<Vec<InvoiceSeries>, String> {
+    let conn = state.db.lock().map_err(|e| e.to_string())?;
+    let mut stmt = conn
+        .prepare(&format!("{} ORDER BY id DESC", SERIES_SELECT))
+        .map_err(|e| e.to_string())?;
+    let rows = stmt
+        .query_map([], map_series)
+        .map_err(|e| e.to_string())?
+        .collect::<rusqlite::Result<Vec<_>>>()
+        .map_err(|e| e.to_string())?;
+    Ok(rows)
+}
+
+/// Deactivates the current series and starts a fresh one, resetting the counter to 1.
+#[tauri::command]
+pub fn start_new_series(
+    state: State<AppState>,
+    prefix: String,
+    padding: i64,
+) -> Result<InvoiceSeries, String> {
+    let prefix = prefix.trim().to_string();
+    if prefix.is_empty() {
+        return Err("Series prefix cannot be empty".into());
+    }
+    let padding = padding.clamp(1, 8);
+    let conn = state.db.lock().map_err(|e| e.to_string())?;
+    conn.execute("UPDATE invoice_series SET is_active = 0", [])
+        .map_err(|e| e.to_string())?;
+    conn.execute(
+        "INSERT INTO invoice_series (prefix, padding, next_number, is_active, created_at)
+         VALUES (?1, ?2, 1, 1, ?3)",
+        params![prefix, padding, chrono::Utc::now().to_rfc3339()],
+    )
+    .map_err(|e| e.to_string())?;
+    let id = conn.last_insert_rowid();
+    conn.query_row(
+        &format!("{} WHERE id = ?1", SERIES_SELECT),
+        params![id],
+        map_series,
+    )
+    .map_err(|e| e.to_string())
+}
@@ -0,0 +1,168 @@
+use crate::models::{BankAccount, Settings};
+use crate::AppState;
+use rusqlite::{params, Row};
+use tauri::State;
+
+const SETTINGS_COLS: &str = "vendor_name, vendor_address, vendor_email, vendor_phone, vendor_pan,
+    vendor_gstin, vendor_state_code, logo_path, signature_path, default_bank_id, default_tax_rate,
+    default_tax_type, payment_terms_days, currency, onboarded, theme";
+
+fn map_settings(row: &Row) -> rusqlite::Result<Settings> {
+    Ok(Settings {
+        vendor_name: row.get(0)?,
+        vendor_address: row.get(1)?,
+        vendor_email: row.get(2)?,
+        vendor_phone: row.get(3)?,
+        vendor_pan: row.get(4)?,
+        vendor_gstin: row.get(5)?,
+        vendor_state_code: row.get(6)?,
+        logo_path: row.get(7)?,
+        signature_path: row.get(8)?,
+        default_bank_id: row.get(9)?,
+        default_tax_rate: row.get(10)?,
+        default_tax_type: row.get(11)?,
+        payment_terms_days: row.get(12)?,
+        currency: row.get(13)?,
+        onboarded: row.get::<_, i64>(14)? != 0,
+        theme: row.get(15)?,
+    })
+}
+
+#[tauri::command]
+pub fn get_settings(state: State<AppState>) -> Result<Settings, String> {
+    let conn = state.db.lock().map_err(|e| e.to_string())?;
+    conn.query_row(
+        &format!("SELECT {} FROM app_settings WHERE id = 1", SETTINGS_COLS),
+        [],
+        map_settings,
+    )
+    .map_err(|e| e.to_string())
+}
+
+#[tauri::command]
+pub fn save_settings(state: State<AppState>, settings: Settings) -> Result<Settings, String> {
+    let conn = state.db.lock().map_err(|e| e.to_string())?;
+    conn.execute(
+        r#"UPDATE app_settings SET
+             vendor_name = ?1, vendor_address = ?2, vendor_email = ?3, vendor_phone = ?4,
+             vendor_pan = ?5, vendor_gstin = ?6, vendor_state_code = ?7, logo_path = ?8,
+             signature_path = ?9, default_bank_id = ?10, default_tax_rate = ?11,
+             default_tax_type = ?12, payment_terms_days = ?13, currency = ?14,
+             onboarded = ?15, theme = ?16
+           WHERE id = 1"#,
+        params![
+            settings.vendor_name,
+            settings.vendor_address,
+            settings.vendor_email,
+            settings.vendor_phone,
+            settings.vendor_pan,
+            settings.vendor_gstin,
+            settings.vendor_state_code,
+            settings.logo_path,
+            settings.signature_path,
+            settings.default_bank_id,
+            settings.default_tax_rate,
+            settings.default_tax_type,
+            settings.payment_terms_days,
+            settings.currency,
+            if settings.onboarded { 1 } else { 0 },
+            settings.theme,
+        ],
+    )
+    .map_err(|e| e.to_string())?;
+    drop(conn);
+    get_settings(state)
+}
+
+fn map_bank(row: &Row) -> rusqlite::Result<BankAccount> {
+    Ok(BankAccount {
+        id: Some(row.get(0)?),
+        label: row.get(1)?,
+        bank_name: row.get(2)?,
+        account_name: row.get(3)?,
+        account_no: row.get(4)?,
+        branch: row.get(5)?,
+        ifsc: row.get(6)?,
+        is_default: row.get::<_, i64>(7)? != 0,
+    })
+}
+
+#[tauri::command]
+pub fn list_banks(state: State<AppState>) -> Result<Vec<BankAccount>, String> {
+    let conn = state.db.lock().map_err(|e| e.to_string())?;
+    let mut stmt = conn
+        .prepare(
+            "SELECT id, label, bank_name, account_name, account_no, branch, ifsc, is_default
+             FROM bank_accounts ORDER BY is_default DESC, id ASC",
+        )
+        .map_err(|e| e.to_string())?;
+    let rows = stmt
+        .query_map([], map_bank)
+        .map_err(|e| e.to_string())?
+        .collect::<rusqlite::Result<Vec<_>>>()
+        .map_err(|e| e.to_string())?;
+    Ok(rows)
+}
+
+#[tauri::command]
+pub fn save_bank(state: State<AppState>, bank: BankAccount) -> Result<BankAccount, String> {
+    let conn = state.db.lock().map_err(|e| e.to_string())?;
+    let is_default = if bank.is_default { 1 } else { 0 };
+
+    let id = match bank.id {
+        Some(id) => {
+            conn.execute(
+                r#"UPDATE bank_accounts SET label=?1, bank_name=?2, account_name=?3,
+                     account_no=?4, branch=?5, ifsc=?6, is_default=?7 WHERE id=?8"#,
+                params![
+                    bank.label, bank.bank_name, bank.account_name, bank.account_no,
+                    bank.branch, bank.ifsc, is_default, id
+                ],
+            )
+            .map_err(|e| e.to_string())?;
+            id
+        }
+        None => {
+            conn.execute(
+                r#"INSERT INTO bank_accounts
+                     (label, bank_name, account_name, account_no, branch, ifsc, is_default)
+                   VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7)"#,
+                params![
+                    bank.label, bank.bank_name, bank.account_name, bank.account_no,
+                    bank.branch, bank.ifsc, is_default
+                ],
+            )
+            .map_err(|e| e.to_string())?;
+            conn.last_insert_rowid()
+        }
+    };
+
+    if is_default == 1 {
+        conn.execute(
+            "UPDATE bank_accounts SET is_default = 0 WHERE id <> ?1",
+            params![id],
+        )
+        .map_err(|e| e.to_string())?;
+        conn.execute(
+            "UPDATE app_settings SET default_bank_id = ?1 WHERE id = 1",
+            params![id],
+        )
+        .map_err(|e| e.to_string())?;
+    }
+
+    conn.query_row(
+        "SELECT id, label, bank_name, account_name, account_no, branch, ifsc, is_default
+         FROM bank_accounts WHERE id = ?1",
+        params![id],
+        map_bank,
+    )
+    .map_err(|e| e.to_string())
+}
+
+#[tauri::command]
+pub fn delete_bank(state: State<AppState>, id: i64) -> Result<(), String> {
+    let conn = state.db.lock().map_err(|e| e.to_string())?;
+    conn.execute("DELETE FROM bank_accounts WHERE id = ?1", params![id])
+        .map_err(|e| e.to_string())?;
+    Ok(())
+}
@@ -0,0 +1,175 @@
+use rusqlite::{params, Connection};
+use std::path::Path;
+
+/// The full schema. Every statement is idempotent so it doubles as the migration step.
+const SCHEMA: &str = r#"
+CREATE TABLE IF NOT EXISTS app_settings (
+    id                 INTEGER PRIMARY KEY CHECK (id = 1),
+    vendor_name        TEXT NOT NULL DEFAULT '',
+    vendor_address     TEXT NOT NULL DEFAULT '',
+    vendor_email       TEXT NOT NULL DEFAULT '',
+    vendor_phone       TEXT NOT NULL DEFAULT '',
+    vendor_pan         TEXT NOT NULL DEFAULT '',
+    vendor_gstin       TEXT NOT NULL DEFAULT '',
+    vendor_state_code  TEXT NOT NULL DEFAULT '29',
+    logo_path          TEXT,
+    signature_path     TEXT,
+    default_bank_id    INTEGER,
+    default_tax_rate   REAL NOT NULL DEFAULT 18,
+    default_tax_type   TEXT NOT NULL DEFAULT 'cgst_sgst',
+    payment_terms_days INTEGER NOT NULL DEFAULT 30,
+    currency           TEXT NOT NULL DEFAULT 'INR',
+    onboarded          INTEGER NOT NULL DEFAULT 0,
+    theme              TEXT NOT NULL DEFAULT 'g10'
+);
+
+CREATE TABLE IF NOT EXISTS bank_accounts (
+    id           INTEGER PRIMARY KEY AUTOINCREMENT,
+    label        TEXT NOT NULL DEFAULT '',
+    bank_name    TEXT NOT NULL DEFAULT '',
+    account_name TEXT NOT NULL DEFAULT '',
+    account_no   TEXT NOT NULL DEFAULT '',
+    branch       TEXT NOT NULL DEFAULT '',
+    ifsc         TEXT NOT NULL DEFAULT '',
+    is_default   INTEGER NOT NULL DEFAULT 0
+);
+
+CREATE TABLE IF NOT EXISTS invoice_series (
+    id          INTEGER PRIMARY KEY AUTOINCREMENT,
+    prefix      TEXT NOT NULL,
+    padding     INTEGER NOT NULL DEFAULT 3,
+    next_number INTEGER NOT NULL DEFAULT 1,
+    is_active   INTEGER NOT NULL DEFAULT 1,
+    created_at  TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS clients (
+    id         INTEGER PRIMARY KEY AUTOINCREMENT,
+    name       TEXT NOT NULL,
+    address    TEXT NOT NULL DEFAULT '',
+    gstin      TEXT NOT NULL DEFAULT '',
+    state_code TEXT NOT NULL DEFAULT '',
+    po_number  TEXT NOT NULL DEFAULT '',
+    created_at TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS invoices (
+    id                        INTEGER PRIMARY KEY AUTOINCREMENT,
+    number                    TEXT NOT NULL UNIQUE,
+    series_id                 INTEGER,
+    invoice_date              TEXT NOT NULL,
+    due_date                  TEXT NOT NULL DEFAULT '',
+    client_id                 INTEGER,
+    client_name               TEXT NOT NULL DEFAULT '',
+    client_address            TEXT NOT NULL DEFAULT '',
+    client_gstin              TEXT NOT NULL DEFAULT '',
+    po_number                 TEXT NOT NULL DEFAULT '',
+    place_of_supply_state_code TEXT NOT NULL DEFAULT '',
+    subtotal                  REAL NOT NULL DEFAULT 0,
+    discount                  REAL NOT NULL DEFAULT 0,
+    tax_type                  TEXT NOT NULL DEFAULT 'none',
+    tax_rate                  REAL NOT NULL DEFAULT 0,
+    cgst_amount               REAL NOT NULL DEFAULT 0,
+    sgst_amount               REAL NOT NULL DEFAULT 0,
+    igst_amount               REAL NOT NULL DEFAULT 0,
+    total                     REAL NOT NULL DEFAULT 0,
+    amount_in_words           TEXT NOT NULL DEFAULT '',
+    bank_account_id           INTEGER,
+    bank_snapshot             TEXT NOT NULL DEFAULT '',
+    signature_path            TEXT,
+    notes                     TEXT NOT NULL DEFAULT '',
+    status                    TEXT NOT NULL DEFAULT 'issued',
+    created_at                TEXT NOT NULL,
+    updated_at                TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS invoice_items (
+    id          INTEGER PRIMARY KEY AUTOINCREMENT,
+    invoice_id  INTEGER NOT NULL REFERENCES invoices(id) ON DELETE CASCADE,
+    description TEXT NOT NULL DEFAULT '',
+    mode        TEXT NOT NULL DEFAULT 'fixed',
+    rate        REAL NOT NULL DEFAULT 0,
+    unit        TEXT NOT NULL DEFAULT 'unit',
+    quantity    REAL NOT NULL DEFAULT 1,
+    amount      REAL NOT NULL DEFAULT 0,
+    sort_order  INTEGER NOT NULL DEFAULT 0
+);
+
+CREATE INDEX IF NOT EXISTS idx_invoice_items_invoice ON invoice_items(invoice_id);
+CREATE INDEX IF NOT EXISTS idx_invoices_created ON invoices(created_at DESC);
+"#;
+
+pub fn open(path: &Path) -> rusqlite::Result<Connection> {
+    let conn = Connection::open(path)?;
+    conn.pragma_update(None, "journal_mode", "WAL")?;
+    conn.pragma_update(None, "foreign_keys", "ON")?;
+    conn.execute_batch(SCHEMA)?;
+    seed(&conn)?;
+    Ok(conn)
+}
+
+/// Insert the first-run defaults the very first time the app is opened.
+/// Vendor details are pre-filled from the owner's existing invoice.
+fn seed(conn: &Connection) -> rusqlite::Result<()> {
+    let settings_count: i64 =
+        conn.query_row("SELECT COUNT(*) FROM app_settings", [], |r| r.get(0))?;
+    if settings_count == 0 {
+        conn.execute(
+            r#"INSERT INTO app_settings
+               (id, vendor_name, vendor_address, vendor_email, vendor_phone,
+                vendor_pan, vendor_gstin, vendor_state_code, default_tax_rate,
+                default_tax_type, payment_terms_days, currency, onboarded, theme)
+               VALUES (1, ?1, ?2, ?3, ?4, ?5, ?6, '29', 18, 'cgst_sgst', 30, 'INR', 0, 'g10')"#,
+            params![
+                "Arun P",
+                "13-B type House, Robertson Road, Frazer Town, Bangalore - 560005",
+                "arunakira113@gmail.com",
+                "9738284459",
+                "CPOPP7388K",
+                "",
+            ],
+        )?;
+    }
+
+    let bank_count: i64 =
+        conn.query_row("SELECT COUNT(*) FROM bank_accounts", [], |r| r.get(0))?;
+    if bank_count == 0 {
+        conn.execute(
+            r#"INSERT INTO bank_accounts
+               (label, bank_name, account_name, account_no, branch, ifsc, is_default)
+               VALUES (?1, ?2, ?3, ?4, ?5, ?6, 1)"#,
+            params![
+                "Primary",
+                "State Bank of India",
+                "Arun P",
+                "54058708786",
+                "017060",
+                "SBIN0017060",
+            ],
+        )?;
+        let bank_id = conn.last_insert_rowid();
+        conn.execute(
+            "UPDATE app_settings SET default_bank_id = ?1 WHERE id = 1",
+            params![bank_id],
+        )?;
+    }
+
+    let series_count: i64 =
+        conn.query_row("SELECT COUNT(*) FROM invoice_series", [], |r| r.get(0))?;
+    if series_count == 0 {
+        let now = chrono::Utc::now().to_rfc3339();
+        let year = chrono::Local::now().format("%Y").to_string();
+        conn.execute(
+            r#"INSERT INTO invoice_series (prefix, padding, next_number, is_active, created_at)
+               VALUES (?1, 3, 1, 1, ?2)"#,
+            params![format!("AP/{}-", year), now],
+        )?;
+    }
+
+    Ok(())
+}
+
+/// Format an invoice number from a series definition, e.g. "AP/2026-" + 1 -> "AP/2026-001".
+pub fn format_number(prefix: &str, padding: i64, number: i64) -> String {
+    format!("{}{:0width$}", prefix, number, width = padding.max(1) as usize)
+}
@@ -0,0 +1,59 @@
+mod commands;
+mod db;
+mod models;
+
+use rusqlite::Connection;
+use std::path::PathBuf;
+use std::sync::Mutex;
+use tauri::Manager;
+
+pub struct AppState {
+    pub db: Mutex<Connection>,
+    pub data_dir: PathBuf,
+}
+
+#[cfg_attr(mobile, tauri::mobile_entry_point)]
+pub fn run() {
+    tauri::Builder::default()
+        .plugin(tauri_plugin_opener::init())
+        .plugin(tauri_plugin_dialog::init())
+        .setup(|app| {
+            let data_dir = app
+                .path()
+                .app_data_dir()
+                .expect("could not resolve the application data directory");
+            std::fs::create_dir_all(&data_dir).expect("could not create the application data directory");
+
+            let conn = db::open(&data_dir.join("voiced.db")).expect("could not open the database");
+            app.manage(AppState {
+                db: Mutex::new(conn),
+                data_dir,
+            });
+            Ok(())
+        })
+        .invoke_handler(tauri::generate_handler![
+            commands::settings::get_settings,
+            commands::settings::save_settings,
+            commands::settings::list_banks,
+            commands::settings::save_bank,
+            commands::settings::delete_bank,
+            commands::series::get_active_series,
+            commands::series::list_series,
+            commands::series::start_new_series,
+            commands::clients::list_clients,
+            commands::clients::save_client,
+            commands::clients::delete_client,
+            commands::invoice::peek_next_invoice_number,
+            commands::invoice::create_invoice,
+            commands::invoice::list_invoices,
+            commands::invoice::get_invoice,
+            commands::invoice::delete_invoice,
+            commands::assets::import_asset,
+            commands::assets::save_asset_bytes,
+            commands::assets::read_asset_data_uri,
+            commands::assets::remove_asset,
+            commands::assets::save_binary_file,
+        ])
+        .run(tauri::generate_context!())
+        .expect("error while running the Voiced application");
+}
--- a/Show More
+++ b/Show More