feat: Sistema de gestión de impresoras persistente

- Crear modelo Printer con campos: id, name, host, deviceId, timeout, isDefault - Almacenamiento persistente en data/printers.json - APIs CRUD: GET/POST /api/printers, GET/PUT/DELETE /api/printers/:id - API para seleccionar impresora activa: POST /api/printers/select - Endpoint de impresión ahora usa la impresora seleccionada o la especificada por printerId - Composable usePrinters() para el cliente - UI: Selector de impresora en sidebar, tab Impresoras en mobile - Componentes: PrintersList, PrintersCard, PrintersForm, PrintersSelector
2025-11-25 00:44:50 -06:00
parent 955584275b
commit e97b2b4d8e
15 changed files with 1006 additions and 6 deletions
--- a/server/utils/printers.ts
+++ b/server/utils/printers.ts
@@ -0,0 +1,178 @@
+// Gestión de impresoras persistentes
+import { readFile, writeFile, mkdir } from 'fs/promises'
+import { existsSync } from 'fs'
+import { join } from 'path'
+
+export interface Printer {
+  id: string
+  name: string
+  host: string
+  deviceId: string
+  timeout: number
+  isDefault: boolean
+  createdAt: string
+  updatedAt: string
+}
+
+export interface PrintersStore {
+  printers: Printer[]
+  selectedPrinterId: string | null
+}
+
+// Directorio de datos persistentes
+const DATA_DIR = join(process.cwd(), 'data')
+const PRINTERS_FILE = join(DATA_DIR, 'printers.json')
+
+// Asegurar que el directorio existe
+async function ensureDataDir(): Promise<void> {
+  if (!existsSync(DATA_DIR)) {
+    await mkdir(DATA_DIR, { recursive: true })
+  }
+}
+
+// Leer store de impresoras
+export async function readPrintersStore(): Promise<PrintersStore> {
+  await ensureDataDir()
+
+  try {
+    const data = await readFile(PRINTERS_FILE, 'utf-8')
+    return JSON.parse(data)
+  } catch {
+    // Si no existe el archivo, retornar store vacío
+    return {
+      printers: [],
+      selectedPrinterId: null
+    }
+  }
+}
+
+// Guardar store de impresoras
+export async function writePrintersStore(store: PrintersStore): Promise<void> {
+  await ensureDataDir()
+  await writeFile(PRINTERS_FILE, JSON.stringify(store, null, 2), 'utf-8')
+}
+
+// Generar ID único
+function generateId(): string {
+  return `printer_${Date.now()}_${Math.random().toString(36).substring(2, 9)}`
+}
+
+// CRUD Operations
+
+export async function getAllPrinters(): Promise<Printer[]> {
+  const store = await readPrintersStore()
+  return store.printers
+}
+
+export async function getPrinterById(id: string): Promise<Printer | null> {
+  const store = await readPrintersStore()
+  return store.printers.find(p => p.id === id) || null
+}
+
+export async function getDefaultPrinter(): Promise<Printer | null> {
+  const store = await readPrintersStore()
+  return store.printers.find(p => p.isDefault) || store.printers[0] || null
+}
+
+export async function getSelectedPrinter(): Promise<Printer | null> {
+  const store = await readPrintersStore()
+  if (store.selectedPrinterId) {
+    const printer = store.printers.find(p => p.id === store.selectedPrinterId)
+    if (printer) return printer
+  }
+  // Fallback a la impresora por defecto
+  return getDefaultPrinter()
+}
+
+export async function setSelectedPrinter(printerId: string | null): Promise<void> {
+  const store = await readPrintersStore()
+  store.selectedPrinterId = printerId
+  await writePrintersStore(store)
+}
+
+export async function createPrinter(data: {
+  name: string
+  host: string
+  deviceId: string
+  timeout?: number
+  isDefault?: boolean
+}): Promise<Printer> {
+  const store = await readPrintersStore()
+
+  const now = new Date().toISOString()
+  const printer: Printer = {
+    id: generateId(),
+    name: data.name,
+    host: data.host,
+    deviceId: data.deviceId,
+    timeout: data.timeout || 60000,
+    isDefault: data.isDefault || store.printers.length === 0, // Primera impresora es default
+    createdAt: now,
+    updatedAt: now
+  }
+
+  // Si esta es default, quitar default de las demás
+  if (printer.isDefault) {
+    store.printers.forEach(p => p.isDefault = false)
+  }
+
+  store.printers.push(printer)
+
+  // Si es la primera impresora, seleccionarla
+  if (store.printers.length === 1) {
+    store.selectedPrinterId = printer.id
+  }
+
+  await writePrintersStore(store)
+  return printer
+}
+
+export async function updatePrinter(id: string, data: Partial<{
+  name: string
+  host: string
+  deviceId: string
+  timeout: number
+  isDefault: boolean
+}>): Promise<Printer | null> {
+  const store = await readPrintersStore()
+  const index = store.printers.findIndex(p => p.id === id)
+
+  if (index === -1) return null
+
+  // Si se está estableciendo como default, quitar default de las demás
+  if (data.isDefault) {
+    store.printers.forEach(p => p.isDefault = false)
+  }
+
+  store.printers[index] = {
+    ...store.printers[index],
+    ...data,
+    updatedAt: new Date().toISOString()
+  }
+
+  await writePrintersStore(store)
+  return store.printers[index]
+}
+
+export async function deletePrinter(id: string): Promise<boolean> {
+  const store = await readPrintersStore()
+  const index = store.printers.findIndex(p => p.id === id)
+
+  if (index === -1) return false
+
+  const wasDefault = store.printers[index].isDefault
+  store.printers.splice(index, 1)
+
+  // Si era la impresora seleccionada, limpiar selección
+  if (store.selectedPrinterId === id) {
+    store.selectedPrinterId = store.printers[0]?.id || null
+  }
+
+  // Si era default y hay otras impresoras, hacer la primera default
+  if (wasDefault && store.printers.length > 0) {
+    store.printers[0].isDefault = true
+  }
+
+  await writePrintersStore(store)
+  return true
+}