refactor to encapsulate / scope input arguments

README.md

@@ -4,25 +4,26 @@
 
 Is a tool to split images. The code is based on [image-splitter](https://github.com/achimoraites/image-splitter) code.
 
-The idea is that you tell to the lib what image and:
+The idea is that you tell to the lib what source image to use and:
 
 - N images per row and M images per colum -> You get image splitted into N x M images.
 - N px per row and M px per colum -> You get image splitted into images with N x M px.
 
-Dos parámetros:
-
-1. `image` puede ser String (fichero local o url) o Buffer o Jimp Object
-2. `options` es un JSON con los campos
-   1. `mode` -> Split mode `grid` (by default) | `vertical` | `horizontal`
-   2. `slices` -> Number of slices
-   3. `width` -> Width in pixels per slice
-   4. `height` -> Height in pixels per slice
-   5. `name` -> name to the slices
-   6. `extension` -> extension to the slices
-   7. `unique` -> only non-repeated slices with `true`, `false` by default  
-
-Si `image` no es un fichero local entonces en `options` tiene que venir si o si lo siguiente:
-
-- `name`
-- ¿`extension`?
-
+Then you tell if you want to store them and how to return data.
+
+Inputs are two arguments:
+
+1. `image` -> Source image => `String` (local file or url) | `Buffer` | `Jimp Object`
+2. `options` -> JSON with next properties:
+   1. `mode` -> Split mode => `grid` (by default) | `vertical` | `horizontal`
+   2. `tiles` -> JSON with properties related to the slices or commonly known as tiles
+      1. `rows` -> Number of rows
+      2. `columns` -> Number of columns
+      3. `width` -> Width in pixels per tile
+      4. `height` -> Height in pixels per tile
+      5. `unique` -> If you need all tiles or non-repeated => `false` (all tiles by default) | `true` (non-repeated tiles)
+   3. `output` -> JSON with properties related to the output / return data and how store it
+      1. `data` -> Type of data to be returned => `buffer` (default) | `path` (local path)
+      2. `path` -> Local path to save the tiles
+      3. `name` -> Preffix name to save the tiles
+      4. `extension` -> Supported extension to save tiles => `jpg` | `png` | `bmp` | `gif` | `tiff`

src/enums.ts

@@ -5,7 +5,16 @@ export enum Mode {
   Horizontal = 'horizontal'
 }
 
-export enum Output {
-  Path = 'path',
-  Buffer = 'buffer'
+export enum Data {
+  Buffer = 'buffer',
+  Path = 'path'
+}
+
+export enum Extension {
+  JPG = 'jpg',
+  JPEG = 'jpeg',
+  PNG = 'png',
+  BMP = 'bmp',
+  GIF = 'gif',
+  TIFF = 'tiff'
 }

src/types.d.ts

@@ -1,39 +1,48 @@
 
 import Jimp from 'jimp/*'
-import { Output } from './enums'
+import { Data, Extension } from './enums'
 
 export type Image = string | Buffer | Jimp
 
 export type Images = string[]
-/**
- * 1. Modo de corte -> Cuadricula, vertical, horizontal
- * 2. Datos para el corte
- * 2.1 Grid -> n slices | width + height
- * 2.2 Vertical -> n slices | height
- * 2.3 Horizontal -> n slices | weidth
- * 3. No slices repetidas
- * 4. Que se devuelve -> Path | Buffer
- * 4.1 Path -> Se guardan las imagenes y
- *  se devuelve un array string con el path de cada slices
- * 4.2 Buffer -> No se guardan las imágenes y
- *  se devuelve un array Buffer con la data de cada slice
- **/
 
-export interface Options {
-  mode: Mode
+export interface Size {
+  width: number
+  height: number
+}
+
+export interface Tile {
   rows?: number
   columns?: number
   width?: number
   height?: number
   unique?: boolean
-  output?: Output
-  save?: boolean
+}
+
+export interface Output {
+  data: Data
   path?: string
   name?: string
-  extension?: string
+  extension?: Extension
 }
 
-export interface Size {
-  width: number
-  height: number
+/**
+ * 1. Slice Mode -> mode => grid | vertical | horizontal
+ * 2. Data for the slices -> tiles
+ * 2.1 Grid tiles -> rows + columns | width + height
+ * 2.2 Vertical tiles -> rows | height
+ * 2.3 Horizontal tiles -> columns | width
+ * 2.4 Non-repeated tiles -> unique => true | false
+ * 3. Output info -> output
+ * 3.1 Data to return -> data => buffer | path
+ *     If data is path or you want to store the slices it needs to provide more properties
+ * 3.2 Local path to store slices -> path
+ * 3.3 Name preffix to slices -> name
+ * 3.4 Extension to slices -> extension => jpg | png | bmp | gif | tiff
+ **/
+
+export interface Options {
+  mode: Mode
+  tiles?: Tile
+  output?: Output
 }

src/utils.ts

@@ -17,8 +17,9 @@ export const isSubmultiple = (numerator: any, denominator: any): boolean => isNa
 
 export const validPairSubmultiples = (numerator1: any, denominator1: any, numerator2: any, denominator2: any): boolean => isSubmultiple(numerator1, denominator1) && isSubmultiple(numerator2, denominator2)
 
-export const parseModeSlices = (mode: Mode, rows: any, columns: any, width: any, height: any, size: Size): boolean => {
+export const parseModeSlices = (mode: Mode, tiles: any, size: Size): boolean => {
   parseMode(mode)
+  const { rows, columns, width, height } = tiles
   switch (mode) {
     // Mode Grid -> rows + columns || width + height
     case Mode.Grid:
@@ -61,7 +62,7 @@ export const parseModeSlices = (mode: Mode, rows: any, columns: any, width: any,
 
 export const parseOptions = (options: any, size: Size): boolean => {
   // Mode + Slices (Rows + Columns || Width + Height)
-  parseModeSlices(options.mode, options?.row, options?.columns, options?.width, options?.height, size)
+  parseModeSlices(options.mode, options?.tiles, size)
   // Name
   // Extension
   // Unique

tests/utils.spec.ts

@@ -1,7 +1,7 @@
 import path from 'path'
 import { Mode } from '../src/enums'
 import { SpliteaError } from '../src/errors'
-import { Size } from '../src/types'
+import { Size, Tile } from '../src/types'
 import { isNatural, isSubmultiple, parseMode, parseModeSlices, validPairNaturalNumbers, validPairSubmultiples } from '../src/utils'
 
 const imgFolder = path.join(__dirname, '..', 'examples')
@@ -114,90 +114,87 @@ describe('Test Utils Module', () => {
       const mode = Mode.Grid
       const size: Size = { width: imgTest.width, height: imgTest.height }
       const errorSubmultiple = new SpliteaError(`you need to provide two natural submultiples of ${size.width} and ${size.height}, columns + rows or width (px) + height (px)`)
+      const tiles: Tile = { rows: undefined, columns: undefined, width: undefined, height: undefined, unique: false }
       // OK Rows & Columns
-      let rows: any = 2
-      let columns: any = 2
-      let width: any
-      let height: any
-      expect(parseModeSlices(mode, rows, columns, width, height, size)).toBeTruthy()
+      tiles.rows = 2
+      tiles.columns = 2
+      expect(parseModeSlices(mode, tiles, size)).toBeTruthy()
       // OK Width & Height
-      rows = undefined
-      columns = undefined
-      width = 2
-      height = 2
-      expect(parseModeSlices(mode, rows, columns, width, height, size)).toBeTruthy()
+      tiles.rows = undefined
+      tiles.columns = undefined
+      tiles.width = 2
+      tiles.height = 2
+      expect(parseModeSlices(mode, tiles, size)).toBeTruthy()
       // Fail Rows Ok Columns
-      rows = 3
-      columns = 2
-      width = undefined
-      height = undefined
-      expect(() => parseModeSlices(mode, rows, columns, width, height, size)).toThrow(errorSubmultiple)
+      tiles.rows = 3
+      tiles.columns = 2
+      tiles.width = undefined
+      tiles.height = undefined
+      expect(() => parseModeSlices(mode, tiles, size)).toThrow(errorSubmultiple)
       // Ok Rows Fail Columns
-      rows = 2
-      columns = 3
-      width = undefined
-      height = undefined
-      expect(() => parseModeSlices(mode, rows, columns, width, height, size)).toThrow(errorSubmultiple)
+      tiles.rows = 2
+      tiles.columns = 3
+      tiles.width = undefined
+      tiles.height = undefined
+      expect(() => parseModeSlices(mode, tiles, size)).toThrow(errorSubmultiple)
       // Fail Width & Ok Height
-      rows = undefined
-      columns = undefined
-      width = 3
-      height = 2
-      expect(() => parseModeSlices(mode, rows, columns, width, height, size)).toThrow(errorSubmultiple)
+      tiles.rows = undefined
+      tiles.columns = undefined
+      tiles.width = 3
+      tiles.height = 2
+      expect(() => parseModeSlices(mode, tiles, size)).toThrow(errorSubmultiple)
       // Ok Width & Fail Height
-      rows = undefined
-      columns = undefined
-      width = 2
-      height = 3
-      expect(() => parseModeSlices(mode, rows, columns, width, height, size)).toThrow(errorSubmultiple)
+      tiles.rows = undefined
+      tiles.columns = undefined
+      tiles.width = 2
+      tiles.height = 3
+      expect(() => parseModeSlices(mode, tiles, size)).toThrow(errorSubmultiple)
     })
 
     test('Horizontal', () => {
       const mode = Mode.Horizontal
       const size: Size = { width: imgTest.width, height: imgTest.height }
       const errorSubmultiple = new SpliteaError(`you need to provide one natural submultiple of ${size.width}, columns or width (px)`)
-      const rows: any = undefined
-      const height: any = undefined
+      const tiles: Tile = { rows: undefined, columns: undefined, width: undefined, height: undefined, unique: false }
       // OK Columns
-      let columns: any = 2
-      let width: any
-      expect(parseModeSlices(mode, rows, columns, width, height, size)).toBeTruthy()
+      tiles.columns = 2
+      tiles.width = undefined
+      expect(parseModeSlices(mode, tiles, size)).toBeTruthy()
       // OK Width
-      columns = undefined
-      width = 2
-      expect(parseModeSlices(mode, rows, columns, width, height, size)).toBeTruthy()
+      tiles.columns = undefined
+      tiles.width = 2
+      expect(parseModeSlices(mode, tiles, size)).toBeTruthy()
       // Fail Columns
-      columns = 3
-      width = undefined
-      expect(() => parseModeSlices(mode, rows, columns, width, height, size)).toThrow(errorSubmultiple)
+      tiles.columns = 3
+      tiles.width = undefined
+      expect(() => parseModeSlices(mode, tiles, size)).toThrow(errorSubmultiple)
       // Fail Width
-      columns = undefined
-      width = 3
-      expect(() => parseModeSlices(mode, rows, columns, width, height, size)).toThrow(errorSubmultiple)
+      tiles.columns = undefined
+      tiles.width = 3
+      expect(() => parseModeSlices(mode, tiles, size)).toThrow(errorSubmultiple)
     })
 
     test('Vertical', () => {
       const mode = Mode.Vertical
       const size: Size = { width: imgTest.width, height: imgTest.height }
       const errorSubmultiple = new SpliteaError(`you need to provide one natural submultiple of ${size.height}, rows or height (px)`)
-      const columns: any = undefined
-      const width: any = undefined
+      const tiles: Tile = { rows: undefined, columns: undefined, width: undefined, height: undefined, unique: false }
       // OK Rows
-      let rows: any = 2
-      let height: any
-      expect(parseModeSlices(mode, rows, columns, width, height, size)).toBeTruthy()
+      tiles.rows = 2
+      tiles.height = undefined
+      expect(parseModeSlices(mode, tiles, size)).toBeTruthy()
       // OK Height
-      rows = undefined
-      height = 2
-      expect(parseModeSlices(mode, rows, columns, width, height, size)).toBeTruthy()
+      tiles.rows = undefined
+      tiles.height = 2
+      expect(parseModeSlices(mode, tiles, size)).toBeTruthy()
       // Fail Rows
-      rows = 3
-      height = undefined
-      expect(() => parseModeSlices(mode, rows, columns, width, height, size)).toThrow(errorSubmultiple)
+      tiles.rows = 3
+      tiles.height = undefined
+      expect(() => parseModeSlices(mode, tiles, size)).toThrow(errorSubmultiple)
       // Fail Height
-      rows = undefined
-      height = 3
-      expect(() => parseModeSlices(mode, rows, columns, width, height, size)).toThrow(errorSubmultiple)
+      tiles.rows = undefined
+      tiles.height = 3
+      expect(() => parseModeSlices(mode, tiles, size)).toThrow(errorSubmultiple)
     })
   })
 })