Class: Workarea::Metrics::ProductForLastWeek

Inherits:
Object
  • Object
show all
Includes:
Mongoid::Attributes::Dynamic, Mongoid::Document
Defined in:
app/models/workarea/metrics/product_for_last_week.rb

Class Method Summary collapse

Class Method Details

.add_calculated_fields ⇒ Object 



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# File 'app/models/workarea/metrics/product_for_last_week.rb', line 99

def add_calculated_fields
  {
    '$addFields' => {
      'product_id' => '$_id',
      'prior_week_revenue' => { '$ifNull' => ['$prior_week_revenue', 0] },
      'revenue_change' => {
        '$subtract' => ['$revenue', '$ifNull' => ['$prior_week_revenue', 0]]
      },
      'average_discount' => {
        '$cond' => [
          { '$eq' => ['$merchandise', 0] },
          0,
          { '$divide' => [{ '$abs' => '$discounts' }, '$merchandise'] }
        ]
      },
      'discount_rate' => {
        '$multiply' => [
          100,
          {
            '$cond' => [
              { '$eq' => ['$units_sold', 0] },
              0,
              { '$divide' => ['$discounted_units_sold', '$units_sold'] }
            ]
          }
        ]
      },
      'conversion_rate' => {
        '$multiply' => [
          100,
          {
            '$cond' => [
              { '$eq' => ['$views', 0] },
              0,
              { '$divide' => ['$orders', '$views'] }
            ]
          }
        ]
      }
    }
  }
end

.add_id ⇒ Object 



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# File 'app/models/workarea/metrics/product_for_last_week.rb', line 142

def add_id
  {
    '$addFields' => {
      '_id' => {
        '$concat' => [
          {
            '$dateToString' => {
              'format' => '%Y%m%d',
              'date' => '$reporting_on',
              'timezone' => Time.zone.tzinfo.name
            }
          },
          '-',
          '$product_id'
        ]
      }
    }
  }
end

.add_prior_week ⇒ Object 



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# File 'app/models/workarea/metrics/product_for_last_week.rb', line 62

def add_prior_week
  {
    '$lookup' => {
      'from' => ProductByWeek.collection.name,
      'let' => { 'product_id' => '$_id' },
      'pipeline' => [
        {
          '$match' => {
            '$expr' => {
              '$and' => [
                { '$eq' => ['$product_id', '$$product_id'] },
                { '$gte' => ['$reporting_on', (Time.current.last_week - 1.week).utc] },
                { '$lte' => ['$reporting_on', (Time.current.last_week.end_of_week - 1.week).utc] }
              ]
            }
          }
        },
        { '$project' => { 'prior_week_revenue' => '$revenue' } }
      ],
      'as' => 'prior_week'
    }
  }
end

.add_view_percentiles ⇒ Object 



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# File 'app/models/workarea/metrics/product_for_last_week.rb', line 166

def add_view_percentiles
  percentiles = CalculatePercentiles.new(collection, :views)

  collection.aggregate([
    {
      '$addFields' => {
        'views_percentile' => {
          '$switch' => {
            'branches' => 99.downto(0).map do |percentile|
              {
                'case' => { '$gte' => ['$views', percentiles[percentile.to_s]] },
                'then' => percentile + 1
              }
            end,
            'default' => 0
          }
        }
      }
    },
    out
  ]).first
end

.aggregate! ⇒ Object 



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# File 'app/models/workarea/metrics/product_for_last_week.rb', line 13

def aggregate!
  delete_all
  aggregate_last_week
  add_view_percentiles
end

.aggregate_last_week ⇒ Object 



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# File 'app/models/workarea/metrics/product_for_last_week.rb', line 19

def aggregate_last_week
  ProductByDay
    .collection
    .aggregate([
      filter_by_date_range,
      group_by_product,
      add_prior_week,
      merge_prior_week_data,
      add_calculated_fields,
      add_id,
      out
    ])
    .first
end

.filter_by_date_range ⇒ Object 



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# File 'app/models/workarea/metrics/product_for_last_week.rb', line 34

def filter_by_date_range
  {
    '$match' => {
      'reporting_on' => {
        '$gte' => Time.current.last_week.utc,
        '$lte' => Time.current.last_week.end_of_week.utc
      }
    }
  }
end

.group_by_product ⇒ Object 



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# File 'app/models/workarea/metrics/product_for_last_week.rb', line 45

def group_by_product
  {
    '$group' => {
      '_id' => '$product_id',
      'views' => { '$sum' => '$views' },
      'orders' => { '$sum' => '$orders' },
      'units_sold' => { '$sum' => '$units_sold' },
      'discounted_units_sold' => { '$sum' => '$discounted_units_sold' },
      'merchandise' => { '$sum' => '$merchandise' },
      'discounts' => { '$sum' => '$discounts' },
      'tax' => { '$sum' => '$tax' },
      'revenue' => { '$sum' => '$revenue' },
      'reporting_on' => { '$min' => '$reporting_on' }
    }
  }
end

.merge_prior_week_data ⇒ Object 



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# File 'app/models/workarea/metrics/product_for_last_week.rb', line 86

def merge_prior_week_data
  {
    '$replaceRoot' => {
      'newRoot' => {
        '$mergeObjects' => [
          { '$arrayElemAt' => ['$prior_week', 0] },
          '$$ROOT'
        ]
      }
    }
  }
end

.out ⇒ Object 



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# File 'app/models/workarea/metrics/product_for_last_week.rb', line 162

def out
  { '$out' => collection.name }
end