del db2 with pr

pos-frontend/__test__/db.test.jsx

@@ -1,22 +0,0 @@
-import '@testing-library/jest-dom'
-import pl from 'nodejs-polars'
-import { test_x, create_csv_database, add_row, print_head, delete_row_by_key, save_db } from '../app/database'
-
-describe('DATABASE', () => {
-  it('DATA', () => {
-    test_x()
-  })
-
-  it('create csv', () => {
-    let res = create_csv_database('csv_db/x.csv')
-    print_head(res)
-
-    add_row(res, { "a_key": ["x"], "a_value": ["y"] })
-    print_head(res)
-
-    save_db(res)
-
-    delete_row_by_key(res, "x")
-    print_head(res)
-  })
-})

pos-frontend/__test__/db.test.ts

@@ -0,0 +1,32 @@
+import '@testing-library/jest-dom'
+import pl from 'nodejs-polars'
+import { create_csv_database, add_row, print_head, delete_row_by_key, save_db } from '../app/database'
+
+describe('DATABASE', () => {
+  it('DATA', () => {
+    const fooSeries = pl.Series("foo", [1, 2, 3])
+
+    let res = fooSeries.sum()
+
+    console.log(res)
+
+    let df = pl.readCSV("data/iris.csv")
+  })
+
+  it('create csv', () => {
+    let res = create_csv_database('csv_db/x.csv', { "a_key": [], "a_value": [] })
+    print_head(res)
+
+    add_row(res, { "a_key": ["x"], "a_value": ["y"] })
+    print_head(res)
+
+    save_db(res)
+
+    delete_row_by_key(res, "x", "a_key")
+    print_head(res)
+  })
+
+  it('creates pos model', () => {
+
+  })
+})

pos-frontend/app/database.ts

@@ -1,57 +1,43 @@
-import pl, { DataFrame } from 'nodejs-polars'
+import pl, { DataFrame, Series } from 'nodejs-polars'
-import fs, { writeFile } from 'fs'
+import fs from 'fs'
 
-export function test_x(params: any) {
+export interface CSVDatabase {
-  const fooSeries = pl.Series("foo", [1, 2, 3])
-
-  let res = fooSeries.sum()
-
-  console.log(res)
-
-  let df = pl.readCSV("data/iris.csv")
-}
-
-interface CSVDatabase2 {
   df: DataFrame
   filepath: string
 }
 
-export function create_csv_database(filepath: string): CSVDatabase2 {
+export function create_csv_database(filepath: string, initialData: any): CSVDatabase {
-  let df = DataFrame({ 'a_key': ['1'], 'a_value': ['2'] })
+  let df = DataFrame(initialData)
-
   df.writeCSV(filepath)
-
   return { df, filepath }
 }
 
-export function save_db(db: CSVDatabase2) {
+export function save_db(db: CSVDatabase) {
   db.df.writeCSV(db.filepath)
 }
 
-export function add_row(db: CSVDatabase2, row: any) {
+export function add_row(db: CSVDatabase, row: any) {
-  let d = DataFrame(row)
+  let d = DataFrame([row])
   db.df = db.df.vstack(d)
 }
 
-export function print_head(db: CSVDatabase2) {
+export function print_head(db: CSVDatabase) {
   console.log(db.df.head())
 }
 
-export function delete_row_by_key(db: CSVDatabase2, key: string) {
+export function delete_row_by_key(db: CSVDatabase, key: string, keyColumn: string) {
-  console.log("NEXT COLUMNS")
+  db.df = db.df.filter(pl.col(keyColumn).neq(pl.lit(key)))
-  console.log(db.df.columns)
-  db.df = db.df.filter(pl.col('a_key').neq(pl.lit(key)))
 }
 
-export function select_columns(db: CSVDatabase2, columns: string[]): DataFrame {
+export function select_columns(db: CSVDatabase, columns: string[]): DataFrame {
   return db.df.select(...columns)
 }
 
-export function join_dataframes(db1: CSVDatabase2, db2: CSVDatabase2, on: string): DataFrame {
+export function join_dataframes(db1: CSVDatabase, db2: CSVDatabase, on: string): DataFrame {
-  return db1.df.join(db2.df, { on, how: "inner" }) // or "left", "right", "outer"
+  return db1.df.join(db2.df, { on, how: "inner" })
 }
 
-export function add_simple_index(db: CSVDatabase2) {
+export function add_simple_index(db: CSVDatabase) {
   const indices = Array.from(Array(db.df.height).keys()) // Create 0-N index
   db.df = db.df.withColumn(pl.Series("index", indices))
 }

pos-frontend/app/model.tsx

@@ -1,5 +1,8 @@
 // point of sales model core
 
+import { CSVDatabase } from "./database"
+import { create_csv_database, print_head } from "./database"
+
 interface Item {
   id: string
   name: string
@@ -19,3 +22,48 @@ interface Inventory {
   itemId: string
   quantity: number
 }
+
+export function create_item_dataframe(items: Item[]): CSVDatabase {
+  const filepath = 'data/items.csv'
+  return create_csv_database(filepath, items)
+}
+
+export function create_sale_dataframe(sales: Sale[]): CSVDatabase {
+  const filepath = 'data/sales.csv'
+  const data = sales.map(sale => ({
+    ...sale,
+    timestamp: sale.timestamp.toISOString() // Convert Date to string
+  }))
+  return create_csv_database(filepath, data)
+}
+
+export function create_inventory_dataframe(inventories: Inventory[]): CSVDatabase {
+  const filepath = 'data/inventory.csv'
+  return create_csv_database(filepath, inventories)
+}
+
+
+function create_models() {
+  const items: Item[] = [
+    { id: '1', name: 'Item 1', price: 100 },
+    { id: '2', name: 'Item 2', price: 200 }
+  ]
+
+  const sales: Sale[] = [
+    { id: '1', itemId: '1', quantity: 2, timestamp: new Date() },
+    { id: '2', itemId: '2', quantity: 1, timestamp: new Date() }
+  ]
+
+  const inventories: Inventory[] = [
+    { itemId: '1', quantity: 50 },
+    { itemId: '2', quantity: 30 }
+  ]
+
+  const itemDB = create_item_dataframe(items)
+  const saleDB = create_sale_dataframe(sales)
+  const inventoryDB = create_inventory_dataframe(inventories)
+
+  print_head(itemDB)
+  print_head(saleDB)
+  print_head(inventoryDB)
+}

pos-frontend/babel.config.js

@@ -0,0 +1,6 @@
+module.exports = {
+  presets: [
+    ['@babel/preset-env', { targets: { node: 'current' } }],
+    '@babel/preset-typescript',
+  ],
+}

pos-frontend/csv_db/x.csv

@@ -1,3 +1 @@
 a_key,a_value
-1,2
-x,y

pos-frontend/package.json

@@ -49,6 +49,7 @@
     "rocksdb": "^5.2.1"
   },
   "devDependencies": {
+    "@babel/preset-typescript": "^7.24.1",
     "@next/eslint-plugin-next": "^14.2.0",
     "@testing-library/jest-dom": "^6.4.2",
     "@testing-library/react": "^14.2.2",

pos-frontend/pnpm-lock.yaml

@@ -117,6 +117,9 @@ importers:
         specifier: ^5.2.1
         version: 5.2.1
     devDependencies:
+      '@babel/preset-typescript':
+        specifier: ^7.24.1
+        version: 7.24.1(@babel/core@7.24.5)
       '@next/eslint-plugin-next':
         specifier: ^14.2.0
         version: 14.2.3
@@ -216,10 +219,20 @@ packages:
     resolution: {integrity: sha512-x32i4hEXvr+iI0NEoEfDKzlemF8AmtOP8CcrRaEcpzysWuoEb1KknpcvMsHKPONoKZiDuItklgWhB18xEhr9PA==}
     engines: {node: '>=6.9.0'}
 
+  '@babel/helper-annotate-as-pure@7.22.5':
+    resolution: {integrity: sha512-LvBTxu8bQSQkcyKOU+a1btnNFQ1dMAd0R6PyW3arXes06F6QLWLIrd681bxRPIXlrMGR3XYnW9JyML7dP3qgxg==}
+    engines: {node: '>=6.9.0'}
+
   '@babel/helper-compilation-targets@7.23.6':
     resolution: {integrity: sha512-9JB548GZoQVmzrFgp8o7KxdgkTGm6xs9DW0o/Pim72UDjzr5ObUQ6ZzYPqA+g9OTS2bBQoctLJrky0RDCAWRgQ==}
     engines: {node: '>=6.9.0'}
 
+  '@babel/helper-create-class-features-plugin@7.24.5':
+    resolution: {integrity: sha512-uRc4Cv8UQWnE4NXlYTIIdM7wfFkOqlFztcC/gVXDKohKoVB3OyonfelUBaJzSwpBntZ2KYGF/9S7asCHsXwW6g==}
+    engines: {node: '>=6.9.0'}
+    peerDependencies:
+      '@babel/core': ^7.0.0
+
   '@babel/helper-environment-visitor@7.22.20':
     resolution: {integrity: sha512-zfedSIzFhat/gFhWfHtgWvlec0nqB9YEIVrpuwjruLlXfUSnA8cJB0miHKwqDnQ7d32aKo2xt88/xZptwxbfhA==}
     engines: {node: '>=6.9.0'}
@@ -232,6 +245,10 @@ packages:
     resolution: {integrity: sha512-wGjk9QZVzvknA6yKIUURb8zY3grXCcOZt+/7Wcy8O2uctxhplmUPkOdlgoNhmdVee2c92JXbf1xpMtVNbfoxRw==}
     engines: {node: '>=6.9.0'}
 
+  '@babel/helper-member-expression-to-functions@7.24.5':
+    resolution: {integrity: sha512-4owRteeihKWKamtqg4JmWSsEZU445xpFRXPEwp44HbgbxdWlUV1b4Agg4lkA806Lil5XM/e+FJyS0vj5T6vmcA==}
+    engines: {node: '>=6.9.0'}
+
   '@babel/helper-module-imports@7.24.3':
     resolution: {integrity: sha512-viKb0F9f2s0BCS22QSF308z/+1YWKV/76mwt61NBzS5izMzDPwdq1pTrzf+Li3npBWX9KdQbkeCt1jSAM7lZqg==}
     engines: {node: '>=6.9.0'}
@@ -242,14 +259,28 @@ packages:
     peerDependencies:
       '@babel/core': ^7.0.0
 
+  '@babel/helper-optimise-call-expression@7.22.5':
+    resolution: {integrity: sha512-HBwaojN0xFRx4yIvpwGqxiV2tUfl7401jlok564NgB9EHS1y6QT17FmKWm4ztqjeVdXLuC4fSvHc5ePpQjoTbw==}
+    engines: {node: '>=6.9.0'}
+
   '@babel/helper-plugin-utils@7.24.5':
     resolution: {integrity: sha512-xjNLDopRzW2o6ba0gKbkZq5YWEBaK3PCyTOY1K2P/O07LGMhMqlMXPxwN4S5/RhWuCobT8z0jrlKGlYmeR1OhQ==}
     engines: {node: '>=6.9.0'}
 
+  '@babel/helper-replace-supers@7.24.1':
+    resolution: {integrity: sha512-QCR1UqC9BzG5vZl8BMicmZ28RuUBnHhAMddD8yHFHDRH9lLTZ9uUPehX8ctVPT8l0TKblJidqcgUUKGVrePleQ==}
+    engines: {node: '>=6.9.0'}
+    peerDependencies:
+      '@babel/core': ^7.0.0
+
   '@babel/helper-simple-access@7.24.5':
     resolution: {integrity: sha512-uH3Hmf5q5n7n8mz7arjUlDOCbttY/DW4DYhE6FUsjKJ/oYC1kQQUvwEQWxRwUpX9qQKRXeqLwWxrqilMrf32sQ==}
     engines: {node: '>=6.9.0'}
 
+  '@babel/helper-skip-transparent-expression-wrappers@7.22.5':
+    resolution: {integrity: sha512-tK14r66JZKiC43p8Ki33yLBVJKlQDFoA8GYN67lWCDCqoL6EMMSuM9b+Iff2jHaM/RRFYl7K+iiru7hbRqNx8Q==}
+    engines: {node: '>=6.9.0'}
+
   '@babel/helper-split-export-declaration@7.24.5':
     resolution: {integrity: sha512-5CHncttXohrHk8GWOFCcCl4oRD9fKosWlIRgWm4ql9VYioKm52Mk2xsmoohvm7f3JoiLSM5ZgJuRaf5QZZYd3Q==}
     engines: {node: '>=6.9.0'}
@@ -352,6 +383,24 @@ packages:
     peerDependencies:
       '@babel/core': ^7.0.0-0
 
+  '@babel/plugin-transform-modules-commonjs@7.24.1':
+    resolution: {integrity: sha512-szog8fFTUxBfw0b98gEWPaEqF42ZUD/T3bkynW/wtgx2p/XCP55WEsb+VosKceRSd6njipdZvNogqdtI4Q0chw==}
+    engines: {node: '>=6.9.0'}
+    peerDependencies:
+      '@babel/core': ^7.0.0-0
+
+  '@babel/plugin-transform-typescript@7.24.5':
+    resolution: {integrity: sha512-E0VWu/hk83BIFUWnsKZ4D81KXjN5L3MobvevOHErASk9IPwKHOkTgvqzvNo1yP/ePJWqqK2SpUR5z+KQbl6NVw==}
+    engines: {node: '>=6.9.0'}
+    peerDependencies:
+      '@babel/core': ^7.0.0-0
+
+  '@babel/preset-typescript@7.24.1':
+    resolution: {integrity: sha512-1DBaMmRDpuYQBPWD8Pf/WEwCrtgRHxsZnP4mIy9G/X+hFfbI47Q2G4t1Paakld84+qsk2fSsUPMKg71jkoOOaQ==}
+    engines: {node: '>=6.9.0'}
+    peerDependencies:
+      '@babel/core': ^7.0.0-0
+
   '@babel/runtime@7.24.5':
     resolution: {integrity: sha512-Nms86NXrsaeU9vbBJKni6gXiEXZ4CVpYVzEjDH9Sb8vmZ3UljyA1GSOJl/6LGPO8EHLuSF9H+IxNXHPX8QHJ4g==}
     engines: {node: '>=6.9.0'}
@@ -5513,6 +5562,10 @@ snapshots:
       '@jridgewell/trace-mapping': 0.3.25
       jsesc: 2.5.2
 
+  '@babel/helper-annotate-as-pure@7.22.5':
+    dependencies:
+      '@babel/types': 7.24.5
+
   '@babel/helper-compilation-targets@7.23.6':
     dependencies:
       '@babel/compat-data': 7.24.4
@@ -5521,6 +5574,19 @@ snapshots:
       lru-cache: 5.1.1
       semver: 6.3.1
 
+  '@babel/helper-create-class-features-plugin@7.24.5(@babel/core@7.24.5)':
+    dependencies:
+      '@babel/core': 7.24.5
+      '@babel/helper-annotate-as-pure': 7.22.5
+      '@babel/helper-environment-visitor': 7.22.20
+      '@babel/helper-function-name': 7.23.0
+      '@babel/helper-member-expression-to-functions': 7.24.5
+      '@babel/helper-optimise-call-expression': 7.22.5
+      '@babel/helper-replace-supers': 7.24.1(@babel/core@7.24.5)
+      '@babel/helper-skip-transparent-expression-wrappers': 7.22.5
+      '@babel/helper-split-export-declaration': 7.24.5
+      semver: 6.3.1
+
   '@babel/helper-environment-visitor@7.22.20': {}
 
   '@babel/helper-function-name@7.23.0':
@@ -5532,6 +5598,10 @@ snapshots:
     dependencies:
       '@babel/types': 7.24.5
 
+  '@babel/helper-member-expression-to-functions@7.24.5':
+    dependencies:
+      '@babel/types': 7.24.5
+
   '@babel/helper-module-imports@7.24.3':
     dependencies:
       '@babel/types': 7.24.5
@@ -5545,12 +5615,27 @@ snapshots:
       '@babel/helper-split-export-declaration': 7.24.5
       '@babel/helper-validator-identifier': 7.24.5
 
+  '@babel/helper-optimise-call-expression@7.22.5':
+    dependencies:
+      '@babel/types': 7.24.5
+
   '@babel/helper-plugin-utils@7.24.5': {}
 
+  '@babel/helper-replace-supers@7.24.1(@babel/core@7.24.5)':
+    dependencies:
+      '@babel/core': 7.24.5
+      '@babel/helper-environment-visitor': 7.22.20
+      '@babel/helper-member-expression-to-functions': 7.24.5
+      '@babel/helper-optimise-call-expression': 7.22.5
+
   '@babel/helper-simple-access@7.24.5':
     dependencies:
       '@babel/types': 7.24.5
 
+  '@babel/helper-skip-transparent-expression-wrappers@7.22.5':
+    dependencies:
+      '@babel/types': 7.24.5
+
   '@babel/helper-split-export-declaration@7.24.5':
     dependencies:
       '@babel/types': 7.24.5
@@ -5650,6 +5735,30 @@ snapshots:
       '@babel/core': 7.24.5
       '@babel/helper-plugin-utils': 7.24.5
 
+  '@babel/plugin-transform-modules-commonjs@7.24.1(@babel/core@7.24.5)':
+    dependencies:
+      '@babel/core': 7.24.5
+      '@babel/helper-module-transforms': 7.24.5(@babel/core@7.24.5)
+      '@babel/helper-plugin-utils': 7.24.5
+      '@babel/helper-simple-access': 7.24.5
+
+  '@babel/plugin-transform-typescript@7.24.5(@babel/core@7.24.5)':
+    dependencies:
+      '@babel/core': 7.24.5
+      '@babel/helper-annotate-as-pure': 7.22.5
+      '@babel/helper-create-class-features-plugin': 7.24.5(@babel/core@7.24.5)
+      '@babel/helper-plugin-utils': 7.24.5
+      '@babel/plugin-syntax-typescript': 7.24.1(@babel/core@7.24.5)
+
+  '@babel/preset-typescript@7.24.1(@babel/core@7.24.5)':
+    dependencies:
+      '@babel/core': 7.24.5
+      '@babel/helper-plugin-utils': 7.24.5
+      '@babel/helper-validator-option': 7.23.5
+      '@babel/plugin-syntax-jsx': 7.24.1(@babel/core@7.24.5)
+      '@babel/plugin-transform-modules-commonjs': 7.24.1(@babel/core@7.24.5)
+      '@babel/plugin-transform-typescript': 7.24.5(@babel/core@7.24.5)
+
   '@babel/runtime@7.24.5':
     dependencies:
       regenerator-runtime: 0.14.1