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| 1 | +// En package.json se debe agregar "type": "module" |
| 2 | + |
| 3 | +import { open, unlink, access, constants } from 'node:fs/promises'; |
| 4 | +import * as readline from 'node:readline/promises'; |
| 5 | +import { stdin as input, stdout as output } from 'node:process'; |
| 6 | + |
| 7 | +async function manageFile() { |
| 8 | + try { |
| 9 | + console.log('Creando archivo de texto edalmava.txt...'); |
| 10 | + const filehandle = await open('edalmava.txt', 'a'); |
| 11 | + await filehandle.appendFile("Edalmava\n"); |
| 12 | + await filehandle.appendFile("30\n"); |
| 13 | + await filehandle.appendFile("JavaScript\n"); |
| 14 | + await filehandle.close(); |
| 15 | + |
| 16 | + console.log('\nImprimiendo el contenido del archivo edalmava.txt:'); |
| 17 | + const file = await open('edalmava.txt'); |
| 18 | + for await (const line of file.readLines()) { |
| 19 | + console.log(line); |
| 20 | + } |
| 21 | + await file.close(); |
| 22 | + |
| 23 | + console.log('\nBorrando archivo de texto edalmava.txt...') |
| 24 | + await unlink('edalmava.txt'); |
| 25 | + console.log('Borrado exitoso del archivo edalmava.txt'); |
| 26 | + |
| 27 | + await retoExtra(); |
| 28 | + } catch (error) { |
| 29 | + console.error('Ha ocurrido un error:', error.message); |
| 30 | + } |
| 31 | +} |
| 32 | + |
| 33 | +async function guardarVenta(rl2) { |
| 34 | + try { |
| 35 | + console.log('Añadir Venta'); |
| 36 | + |
| 37 | + const nombreProducto = await rl2.question('Nombre Producto: '); |
| 38 | + const cantidadVendida = await rl2.question('Cantidad Vendida: '); |
| 39 | + const precio = await rl2.question('Precio Producto: '); |
| 40 | + |
| 41 | + const producto = [nombreProducto, cantidadVendida, precio, precio * cantidadVendida].join(',') |
| 42 | + |
| 43 | + const filehandle = await open('ventas.txt', 'a'); |
| 44 | + await filehandle.appendFile(`${producto}\n`); |
| 45 | + await filehandle.close(); |
| 46 | + } catch(error) { |
| 47 | + console.error('Ha ocurrido un error:', error.message); |
| 48 | + } |
| 49 | +} |
| 50 | + |
| 51 | +async function mostrarProductos() { |
| 52 | + try { |
| 53 | + await access('ventas.txt', constants.F_OK); |
| 54 | + console.log('\nVentas:\n'); |
| 55 | + const file = await open('ventas.txt'); |
| 56 | + for await (const line of file.readLines()) { |
| 57 | + console.log(line); |
| 58 | + } |
| 59 | + await file.close(); |
| 60 | + } catch(error) { |
| 61 | + if (error.code === 'ENOENT') { |
| 62 | + console.error('Todavía no se han añadido productos al archivo de ventas'); |
| 63 | + } else { |
| 64 | + console.error('Ha ocurrido un error:', error.message); |
| 65 | + } |
| 66 | + } |
| 67 | +} |
| 68 | + |
| 69 | +async function retoExtra() { |
| 70 | + const rl = readline.createInterface({ input, output, terminal: false }); |
| 71 | + try { |
| 72 | + |
| 73 | + let opcion = ''; |
| 74 | + |
| 75 | + while (opcion !== '3') { |
| 76 | + console.log('\nMenú Principal\n'); |
| 77 | + opcion = await rl.question('1. Añadir venta\n2. Consultar Ventas\n3. Salir\n\nEscoja su opción: '); |
| 78 | + switch (opcion) { |
| 79 | + case '1': |
| 80 | + await guardarVenta(rl); |
| 81 | + break; |
| 82 | + case '2': |
| 83 | + await mostrarProductos(); |
| 84 | + break; |
| 85 | + case '3': |
| 86 | + console.log('Saliendo...') |
| 87 | + try { |
| 88 | + await access('ventas.txt', constants.F_OK); |
| 89 | + await unlink('ventas.txt'); |
| 90 | + console.log('Archivo de ventas borrado'); |
| 91 | + } catch(error) { |
| 92 | + if (error.code !== 'ENOENT') { |
| 93 | + console.error('Error al verificar o borrar el archivo de ventas:', error.message); |
| 94 | + } |
| 95 | + } |
| 96 | + |
| 97 | + break; |
| 98 | + default: |
| 99 | + console.log('Opción no válida\n') |
| 100 | + } |
| 101 | + } |
| 102 | + |
| 103 | + rl.close(); |
| 104 | + } catch (error) { |
| 105 | + console.error('Ha ocurrido un error:', error.message); |
| 106 | + rl.close(); |
| 107 | + } |
| 108 | +} |
| 109 | + |
| 110 | +manageFile(); |
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