@janiscommerce/picking-helpers NPM

Picking Helpers

:warning:

Node 18 is required for this package's dependencies.

This package provides controllers to help process a picked item.

📦 Installation

npm install @janiscommerce/picking-helpers

Barcode Type Controller

It's a controller to communicate with Catalog service and get the Barcode Types.

Methods

barcodeType.get(getParams): Get barcode-types from Catalog service
- Params:
  - getParams: Model get params such as filters.
- Returns:
  - Array of objects The obtained barcode-types

const { BarcodeType } = require('@janiscommerce/picking-helpers');

const barcodeType = this.session.getSessionInstance(BarcodeType);

const barcodeTypes = await barcodeType.get({ filters: { id: '642b45ed9abb57f2b8afb9e5' } });

/*
    response: [
        {
            id: '642b45ed9abb57f2b8afb9e5',
            name: 'SomeBarcodeType',
            type: 'ean13',
            // ...
        }
    ]
*/

Barcode Controller

It's a controller to validate and process EAN-13 and code128 barcodes.

Methods

Validate Barcode Length

Barcode.validateLength(barcodeToValidate, barcodeTypes): Validate the barcode length
- Params:
  - barcodeToValidate: String picked Barcode
  - barcodeTypes: (optional) Object | Array of objects Item's Barcode Types (from Catalog service), used only for code128, if not received, it will be processed as EAN.
- Returns:
  - Boolean

const { Barcode } = require('@janiscommerce/picking-helpers');

// EAN
Barcode.validateLength('7002454050008'); // response: true
Barcode.validateLength('7002'); // response: false

// code128
const barcodeType = {
    name: 'SomeBarcodeType',
    type: 'code128',
    length: 15,
    // ...
}

Barcode.validateLength('700245405000848', [barcodeType]); // response: true
Barcode.validateLength('7002', barcodeType); // response: false

Get SKU Identifiers

Barcode.getSkuIdentifiers(barcode, barcodeTypes): Returns the SKU Identifiers
- Params:
  - barcode: String picked Barcode
  - barcodeTypes: (optional) Object | Array of objects Item's Barcode Types (from Catalog service), used only for code128, if not received, it will be processed as EAN.
- Returns
  - Array of String

const { Barcode } = require('@janiscommerce/picking-helpers');

// EAN
Barcode.getSkuIdentifiers('123456789123');

/*
    response: [
        '1234567890005',
        '1234567800004',
        '1234567000008',
        '1234560000005',
        '1234500000003'
    ]
*/

// code128
const barcodeType = {
    name: 'SomeBarcodeType',
    type: 'code128',
    length: 15
    catalogation: {
        referenceIdPosition: {
            start: 0,
            end: 6
        }
    }
    // ...
}

Barcode.getSkuIdentifiers('123456000098765', [barcodeType]);

/*
    response: ['123456']
*/

Get Barcode Variables

Barcode.getVariables(barcode, productGroups|barcodeTypes): Returns the variables according to the barcode and its Product Group behavior or Barcode Type variables
- Params:
  - barcode: String picked Barcode
  - productGroups|barcodeTypes: (optional) Object | Array of objects Item's Product Groups or Barcode Types. Product Groups will only work for EAN and if this parameter is not passed the barcode will be processed as EAN.
- Returns:
  - Object with variable type as key, if there is no variable type, the key will be default.

const { Barcode } = require('@janiscommerce/picking-helpers');

// EAN
const productGroup = {
    name: 'Pets Food',
    behaviors:{
        eanVariableType: 'quantity',
        eanMeasurementUnit: 'gr,
        skuIdentifierLength: 7
    }
    // ...
}

Barcode.getVariables('7002454040008');

/*
    response: {
        default: 4000
    }
*/

Barcode.getVariables('7002454009008', [productGroup]);

/*
    response: {
        quantity: 900
    }
*/

//code128
const barcodeType = {
    name: 'SomeBarcodeType',
    type:'code128',
    length: 15,
    variables: [
        {
            type: 'price',
            position: {
                start: 7,
                end: 11
            }
        },
        {
            type: 'quantity',
            position: {
                start: 12,
                end: 15
            }
        }
    ],
    catalogation: {
        referenceIdPosition: {
            start: 0,
            end: 6
        }
    }
}

Barcode.getVariables('700245407009035', [barcodeType]);

/*
    response: {
        price: 700,
        quantity: 35
    }
*/

Get Original Barcode

Barcode.getOriginal(barcode, productGroups|barcodeTypes, length): Identify according to the Product Groups or Barcode Types.
- Params:
  - barcode: String picked Barcode
  - productGroups|barcodeTypes: (optional) Object | Array of objects Item's Product Groups or Barcode Types. Product Groups will only work for EAN and if this parameter is not passed the barcode will be processed as EAN.
  - length: (optional) Number SKU Identifier length, only for EAN, if it's not passed, will try to search it in the Product Group/Barcode Type.
- Returns:
  - String original Barcode

const { Barcode } = require('@janiscommerce/picking-helpers');

// EAN
const productGroup = {
    name: 'Pets Food',
    behaviors:{
        eanVariableType: 'quantity',
        eanMeasurementUnit: 'gr,
        skuIdentifierLength: 7
    }
    // ...
}

Barcode.getOriginal('7002454050008'); // response: 7002454050008
Barcode.getOriginal('7002454050008', [productGroup]); // response: 7002454000004

//code128
const barcodeType = {
    name: 'SomeBarcodeType',
    type:'code128',
    length: 15,
    variables: [
        {
            type: 'price',
            position: {
                start: 7,
                end: 11
            }
        },
        {
            type: 'quantity',
            position: {
                start: 12,
                end: 15
            }
        }
    ],
    catalogation: {
        referenceIdPosition: {
            start: 0,
            end: 6
        }
    }
}

Barcode.getOriginal('700245407009035', [barcodeType]);

/*
    response: 7002454
*/

// Using completeWithZero: true
const barcodeTypeNew = {
    ...barcodeType,
    catalogation: {
        referenceIdPosition: {
            start: 0
            end: 6
        },
        completeWithZero: true
    }
}

Barcode.getOriginal('700245407009035', [barcodeType]);

/*
    response: 700245400009000
*/

Totals Controller

Identifies the real totals for picked items with EAN-13 and code128 barcodes.

:new: Calculating Totals with `manualTotalQuantity`

In scenarios where manualTotalQuantity is provided for a Picked Item, this value will be considered as the new totalQuantity. Additionally, the quantityPerEan will be recalculated based on the specified manualTotalQuantity. See the example below for clarification.

{
  "eanCount": 2,
  "quantityPerEan": 25,
  "totalQuantity": 50,
  "manualTotalQuantity": 50
}

:new: Calculating `quantityPerEan` and `totalQuantity` when the Picked Item has no Product Groups or its config is for Unitary items

Now when the Picked Item has no Product Groups or its config is for unitary items, the totalQuantity and quantityPerEan will be calculated using the Picked Item's sellingUnitMultiplier (if available). See examples below.

Totals.calculate(pickedItem): Process the item and returns the totals according to the Barcode, Product Groups or BarcodeTypes and Measurement Units.
- Params:
  - pickedItem: Object
  - Response: Object

:information_source: Picked item's Product Groups will only work for EAN barcodes, for code128 use Picked item's Barcode Types, EANs also work with Barcode Types that are type 'ean13'.

Response

The response will have the next fields:

eanCount: Total numbers of units per Barcode/Ean
pricePerUnit: Price per unit per Barcode (only when barcode with price and quantity variables is present)
quantityPerEan: Quantity per Barcode/Ean
totalQuantity: Total Quantity
error: The error message (only if cannot process the item)

Available variable types

expirationDate: (only for code128) Item's expiration date
batch: (only for code128) Item's batch
price: Item's price
quantity: Item's quantity
none: No behavior

:warning: Any other type not listed here will be considered unknown and cannot be processed.

Example

const { Totals } = require('@janiscommerce/picking-helpers');

// EAN
const pickedItem = {
    price: 50,
    unitMultiplier: 1,
    sellingUnitMultiplier: 1,
    measurementUnit: 'gr',
    sellingMeasurementUnit: 'gr',
    barcode: '7002454005009', // still compatible with 'ean' field
    eanCount: 2, // still compatible with 'eanCount' field
    productGroups: [{
        behaviors: {
            eanVariableType: 'quantity',
            eanMeasurementUnit: 'gr'
        }
    }]
    // ...
}

Totals.calculate(pickedItem);

/*
    response: {
        eanCount: 2,
        quantityPerEan: 500,
        totalQuantity: 1000
    }
*/

//code128
const pickedItem = {
    price: 70,
    unitMultiplier: 1,
    sellingUnitMultiplier: 1,
    measurementUnit: 'gr',
    sellingMeasurementUnit: 'gr',
    barcode: '700245407009035',
    eanCount: 2,
    barcodeTypes: [{
        name: 'SomeBarcodeType',
        type:'code128',
        length: 15,
        variables: [
            {
                type: 'price',
                position: {
                    start: 7,
                    end: 11
                }
            },
            {
                type: 'quantity',
                position: {
                    start: 12,
                    end: 15
                }
            }
        ],
        catalogation: {
            referenceIdPosition: {
                start: 0,
                end: 6
            }
        }
    }]
}

Totals.calculate(pickedItem);

/*
    response: {
        eanCount: 2,
        pricePerUnit: 10
        quantityPerEan: 35,
        totalQuantity: 70
    }
*/

// Calculating totals without Product Groups
const pickedItem = {
    price: 50,
    unitMultiplier: 1,
    sellingUnitMultiplier: 1.25,
    measurementUnit: 'gr',
    sellingMeasurementUnit: 'gr',
    barcode: '7002454005009', // still compatible with 'ean' field
    eanCount: 2, // still compatible with 'eanCount' field
    productGroups: []
    // ...
}

Totals.calculate(pickedItem);

/*
    response: {
        eanCount: 2,
        quantityPerEan: 2.5,
        totalQuantity: 2.5
    }
*/

:warning: Deprecated Controllers

These controllers are kept for retrocompatibily and they still work as exactly as they used to, including the method names, parameters and responses.

EAN Controller

:warning: Deprecated: Use Barcode controller instead.

It is a controller for validate and process EAN-13.

Methods

Validate EAN Length

Ean.validateEanLength(eanToValidate): Validate the EAN length
- Params:
  - eanToValidate: String picked EAN
- Returns:
  - Boolean

const { Ean } = require('@janiscommerce/picking-helpers');

console.log(Ean.validateEanLength('7002454050008'));// response: true
console.log(Ean.validateEanLength('7002')) // response: false

Get SKU Identifiers

Ean.getSkuIdentifiers(ean): Returns the SKU Identifier for many lengths
- Params:
  - ean: String picked EAN
- Returns:
  - Array of String

const { Ean } = require('@janiscommerce/picking-helpers');

console.log(Ean.getSkuIdentifiers('123456789123')); // response: ['1234567890005', '1234567800004', '1234567000008', '1234560000005', '1234500000003']

Get Ean Variable

Ean.getEanVariable(ean, productGroups): Returns the variable according to the EAN and the Product Group behavior.
- Params:
  - ean: String picked EAN
  - productGroups: (optional) Array of Objects Item's Product Groups, if it are not passed will use only picked EAN
- Returns:
  - Number

const { Ean } = require('@janiscommerce/picking-helpers');

const productGroup = {
    id: 'd555345345345as67a342a',
    referenceId: 'SRI-0123',
    name: 'Pets Food',
    behaviors: {
        eanVariableType: 'quantity',
        eanMeasurementUnit: 'gr',
        skuIdentifierLength: 7
    }
}

console.log(Ean.getEanVariable('7002454040008')); // response: 4000
console.log(Ean.getEanVariable('7002454040008', [productGroup])); // response: 900

Get Original EAN

Ean.getOriginalEan(ean, productGroups, length): Identify according to the Product Groups and returns the original EAN
- Params:
  - ean: String picked EAN
  - productGroups: (optional) Array of Objects Item's Product Groups, if it are not passed identify the original EAN with the picked EAN value
  - length: (optional) Number SKU Identifier length, if it is not passed will try to search it in the Product Group
- Returns:
  - String original EAN

Example

const { Ean } = require('@janiscommerce/picking-helpers');

const productGroup = {
    id: 'd555345345345as67a342a',
    referenceId: 'SRI-0123',
    name: 'Pets Food',
    behaviors: {
        eanVariableType: 'quantity',
        eanMeasurementUnit: 'gr',
        skuIdentifierLength: 7
    }
}

console.log(Ean.getOriginalEan('7002454050008')); // response: '7002454050008'
console.log(Ean.getOriginalEan('7002454050008', [productGroup])); // response: '7002454000004'

Totalizer Controller

:warning: Deprecated: Use Totals controller instead.

Controller for identify the real totals for a picked items.

Totalizer.calculate(pickedItem): Process the item, and returns the totals according with EAN, Products Groups Behaviors, Measurement Units.
- Params:
  - pickedItem: Object
- Response: See Next

Response

The response will have this fields

eanCount, Total numbers of units per EAN
quantityPerEan, Quantity Per EAN
totalQuantity, Total Quantity
error (only if cannot process the item)

Available EAN Variable Types

quantity
price
none or (no behavior)

Every other type will match as unknown and cannot be processed

Example

const { Totalizer } = require('@janiscommerce/picking-helpers');

const pickedItem = {
    // ... other fields that the controller not used
    price: 50,
	unitMultiplier: 1,
	sellingUnitMultiplier: 1,
    measurementUnit: 'gr',
	sellingMeasurementUnit: 'gr',
	ean: '7002454005009',
    eanCount: 2,
    productGroups: [{
        behaviors: {
            eanVariableType: 'quantity',
            eanMeasurementUnit: 'gr'
        }
    }]
};

console.log(Totalizer.calculate(pickedItem));

/* Response:
{
    eanCount: 2,
    quantityPerEan: 500,
    totalQuantity: 1000
}

*/

Quantity rounding

Now the quantities will be rounded taking into account the price in the EAN and the item's product group variable type

const { Totalizer } = require('@janiscommerce/picking-helpers');

const pickedItem = {
    // ... other fields that the controller not used
    price: 11.11,
	unitMultiplier: 1,
	sellingUnitMultiplier: 1,
    measurementUnit: 'un',
	sellingMeasurementUnit: 'un',
	ean: '2610610013888',
    eanCount: 1,
    productGroups: [{
        behaviors: {
            eanVariableType: 'price',
            eanDecimals: 2
        }
    }]
};

console.log(Totalizer.calculate(pickedItem));

/* Response (before changes):
{
    eanCount: 1,
    quantityPerEan: 1.2493249324932494
    totalQuantity: 1.2493249324932494
}

/* Response (after changes):
{
    eanCount: 1,
    quantityPerEan: 1.25,
    totalQuantity: 1.25
}
*/

WeighableEanGenerator

Class to generate a weighable ean from item data and item productGroups.

This class replaces the generateWeighableEan function, removed in version 1.3.0.

The usage is changed, the eanRules are replaced with the item productGroups directly and the quantity becomes inside itemData.

Before

const { generateWeighableEan } = require('@janiscommerce/picking-helpers');

const quantity = 1;

const eanRules = {
    skuIdentifierLength: 7,
    eanVariableType: 'quantity',
    eanMeasurementUnit: 'gr'
};

generateWeighableEan(quantity, eanRules, itemData);

After

const { WeighableEanGenerator } = require('@janiscommerce/picking-helpers');

const itemData = {
    quantity: 1,
    measurementUnit: 'kg',
    ean: '1234567000001',
    sellingUnitMultiplier: 0.5
};

const productGroups = [{
    behaviors: {
        skuIdentifierLength: 7,
        eanVariableType: 'quantity',
        eanMeasurementUnit: 'gr'
    }
}];

WeighableEanGenerator.generate(itemData, productGroups);

Examples

Generate ean with variableType quantity

const { WeighableEanGenerator } = require('@janiscommerce/picking-helpers');

const itemData = {
    quantity: 1,
    measurementUnit: 'kg',
    ean: '1234567000001',
    sellingUnitMultiplier: 0.5
};

const productGroups = [{
    behaviors: {
        skuIdentifierLength: 7,
        eanVariableType: 'quantity',
        eanMeasurementUnit: 'gr'
    }
}];

console.log(WeighableEanGenerator.generate(itemData, productGroups));

// 1234567010007

Generate ean with variableType price

const { WeighableEanGenerator } = require('@janiscommerce/picking-helpers');

const itemData = {
    quantity: 2,
    pricePerUnit: 2,
    measurementUnit: 'kg',
    ean: '1234567000001',
    sellingUnitMultiplier: 0.5
};

const productGroups = [{
    behaviors: {
        skuIdentifierLength: 7,
        eanVariableType: 'price',
        eanDecimals: 2
    }
}];

console.log(WeighableEanGenerator.generate(itemData, productGroups));

// 1234567008004

Generate ean with variableType quantity using barcode

const { WeighableEanGenerator } = require('@janiscommerce/picking-helpers');

const itemData = {
    quantity: 1,
    measurementUnit: 'kg',
    ean: '1234567000001',
    sellingUnitMultiplier: 0.5
};

const productGroups = [{
    behaviors: {
        barcode: {
            type: 'ean13',
            length: 13,
            catalogation: {
                referenceIdPosition: {
                    start: 0,
                    end: 6
                },
                completeWithZero: true,
                useVerificationCode: true
            },
            variables: [
                {
                    type: 'quantity',
                    position: {
                        start: 7,
                        end: 11
                    },
                    features: {
                        unitMultiplier: 'gr'
                    }
                }
            ]
        }
    }
}];

console.log(WeighableEanGenerator.generate(itemData, productGroups));

// 1234567010007

Generate ean with variableType price using barcode

const { WeighableEanGenerator } = require('@janiscommerce/picking-helpers');

const itemData = {
    quantity: 2,
    pricePerUnit: 2,
    measurementUnit: 'kg',
    ean: '1234567000001',
    sellingUnitMultiplier: 0.5
};

const productGroups = [{
    behaviors: {
        barcode: {
            type: 'ean13',
            length: 13,
            catalogation: {
                referenceIdPosition: {
                    start: 0,
                    end: 6
                },
                completeWithZero: true,
                useVerificationCode: true
            },
            variables: [
                {
                    type: 'price',
                    position: {
                        start: 7,
                        end: 11
                    },
                    features: {
                        decimals: 2
                    }
                }
            ]
        }
    }
}];

console.log(WeighableEanGenerator.generate(itemData, productGroups));

// 1234567008004

Generate ean with multiple variable types using barcode

const { WeighableEanGenerator } = require('@janiscommerce/picking-helpers');

const itemData = {
    quantity: 2,
    pricePerUnit: 2,
    sellingUnitMultiplier: 0.5,
    measurementUnit: 'kg',
    batch: '94853',
    expirationDate: '582814924',
    ean: '1234567000001'
};

const productGroups = [{
    behaviors: {
        barcode: {
            type: 'code128',
            catalogation: {
                referenceIdPosition: {
                    start: 0,
                    end: 7
                },
                completeWithZero: false,
                useVerificationCode: false
            },
            variables: [
                {
                    type: 'quantity',
                    features: {
                        unitMultiplier: 'gr'
                    },
                    position: {
                        start: 8,
                        end: 12
                    }
                },
                {
                    type: 'price',
                    features: {
                        decimals: 2
                    },
                    position: {
                        start: 14,
                        end: 18
                    }
                },
                {
                    type: 'batch',
                    position: {
                        start: 20,
                        end: 24
                    }
                },
                {
                    type: 'expirationDate',
                    position: {
                        start: 26,
                        end: 34
                    }
                }
            ]
        }
    }
}];

console.log(WeighableEanGenerator.generate(itemData, productGroups));

// 12345670020000008000948530582814924

generateBarcode

Function to generate a custom barcode from already formatted item data and barcode config

const { generateBarcode } = require('@janiscommerce/picking-helpers');

const itemData = {
    referenceId: "12345670",
    price: "0400",
    quantity: "2000",
    batch: "94853",
    expirationDate: "582814924",
};

const barcodeConfig = {
    type: 'code128',
    catalogation: {
        referenceIdPosition: {
            start: 0,
            end: 7
        },
        completeWithZero: false,
        useVerificationCode: false
    },
    variables: [
        {
            type: 'quantity',
            features: {
                unitMultiplier: 'gr'
            },
            position: {
                start: 8,
                end: 12
            }
        },
        {
            type: 'price',
            features: {
                decimals: 2
            },
            position: {
                start: 14,
                end: 18
            }
        },
        {
            type: 'batch',
            position: {
                start: 20,
                end: 24
            }
        },
        {
            type: 'expirationDate',
            position: {
                start: 26,
                end: 34
            }
        }
    ]
};

console.log(generateBarcode(itemData, barcodeConfig));

// 12345670020000004000948530582814924

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