Modèle pour le doctype ReceiptDetail, avec routine pour ajouter le code barre et exhiber des informations du label.

receiptdetail_enrich.js

americano = require('americano');

module.exports = ReceiptDetail = americano.getModel('receiptdetail', {
 'origin': String,
 'order': Number,
 'barcode': String,
 'label': String,
 'family': String,
 'familyLabel': String,
 'section': String,
 'sectionLabel': String,
 'amount': Number,
 'price': Number,
 'type': String,
 'typeLabel': String,
 'receiptId': String,
 'intermarcheShopId': String,
 'timestamp': Date,
 'isOnlineBuy': Boolean,

//
 'quantityUnit': String,
 'quantityAmount': Number,
 'quantityWeight': String,
 'quantityLabel': String,
 'name': String,
 'computedWeight' : Number, // kg (kilogrammes)
 'computedVolume': Number, // L (Litter).


 });

ReceiptDetail._ean13CheckSum = function(rdet) {
    if (rdet.barcode && rdet.barcode.length == 12) {
        // last checksum digit is needed
        // cf : http://fr.wikipedia.org/wiki/Code-barres_EAN#Cl.C3.A9_de_contr.C3.B4le
        
        var even = 0 ;
        var odd = 0 ;

        for (var i=0; i<6; i++) {
            odd += parseInt(rdet.barcode[2 * i]);
            even += parseInt(rdet.barcode[2 * i + 1]);
        }
        var checksum = 10 - ( 3 * even + odd ) % 10 ;

        rdet.barcode = rdet.barcode + checksum.toString() ;
    }
};

ReceiptDetail._enrichReceiptDetail = function(rdet) {
                // Parse quantity
                // Match parterns : 3x20cl ; 8x1l ; 70cl ; 6x50 cl ; 180gx3
                
                // 3x : (\d+)x
                // 3x or not : (?:(\d+)x|())
                //
                // units : (cl|g|l|ml|m)
                //
                // x3 : (?:x(\d+)|())
                
                // g1 : mult
                // g2 : quantity
                // g3 : unit
                // g4 : mult

    reg = /(?:(\d+)x|)(\d+)(cl|g|l|ml|m|kg)(?:x(\d+)|)/i ;
    
    unitMap = {
        "CL": "cL",
        "ML": "mL",
        "M": "mL",
        "L": "L",
        "G": "g",
        "KG": "kg",
    }
    
    grs = reg.exec(rdet.label);
    if (grs) {
        
        rdet.quantityUnit = (grs[3] in unitMap) ? unitMap[grs[3]] : grs[3] ;
        rdet.quantityAmount = parseInt(grs[1]?grs[1]:grs[4]);
        rdet.quantityWeight = parseInt(grs[2]);
        rdet.quantityLabel = grs[0];

        if (rdet.quantityAmount) {
            rdet.quantityTotalWeight = rdet.quantityWeight * rdet.quantityAmount;

            rdet.quantityLabel = rdet.quantityAmount + "x" + rdet.quantityWeight + rdet.quantityUnit;
        } else {
            rdet.quantityTotalWeight = rdet.quantityWeight;

            rdet.quantityLabel = rdet.quantityWeight + rdet.quantityUnit;
        }
        
        if (rdet.quantityUnit == 'cL') {
            rdet.computedWeight = rdet.quantityTotalWeight * 0.01 ;
            rdet.computedVolume = rdet.quantityTotalWeight * 0.01 ;
        } else if (rdet.quantityUnit == 'mL'
            || rdet.quantityUnit == 'g' ) {
            rdet.computedWeight = rdet.quantityTotalWeight * 0.001 ;
            rdet.computedVolume = rdet.quantityTotalWeight * 0.001 ;
        } else if (rdet.quantityUnit == 'L'
            || rdet.quantityUnit == 'kg' ) {
            rdet.computedWeight = rdet.quantityTotalWeight ;
            rdet.computedVolume = rdet.quantityTotalWeight ;
        }
        
        
       
        // remove from label
        //rdet.name = rdet.label.substring(grs['index'], grs[0].length);
        rdet.name = rdet.label.substring(0, grs['index']);


    } else if (rdet.label == "NR" || rdet.label == "NA" || !rdet.label ) {
        rdet.name = rdet.familyLabel;
    } else {
        rdet.name = rdet.label;
    }
    
    // Vegetables !!
    if (rdet.section == '34') {
         rdet.computedWeight = rdet.price / 3.0 ; // prix moyen 3.0 E/kg.
         rdet.computedVolume = rdet.computedWeight ; // Water density.

    }

    
    // Clean name look.
    // to lower.
    // points -> spaces.
    if (rdet.name) {
        rdet.name = rdet.name.toLowerCase().replace('.', ' ');
    }
    
    //console.log(rdet.label);
    //console.log(rdet.name);
    //console.log(rdet.quantityLabel);
    //console.log('/n');

    return rdet;
};


// Automatically called by jugglingdb on requested data.
ReceiptDetail.afterInitialize = function() {
    ReceiptDetail._enrichReceiptDetail(this);
    ReceiptDetail._ean13CheckSum(this);

};