Class: HrLite::PayrollRunProcessor

Inherits:
Object
  • Object
show all
Defined in:
app/services/hr_lite/payroll_run_processor.rb

Overview

(Re)computes every slip for a run in one transaction. Missing structures become warnings, manual overrides survive recomputes, employees who became ineligible lose their draft slips.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(run) ⇒ PayrollRunProcessor

Returns a new instance of PayrollRunProcessor.



10
11
12
 
# File 'app/services/hr_lite/payroll_run_processor.rb', line 10

def initialize(run)
  @run = run
end

Class Method Details

.call(run) ⇒ Object 



6
7
8
 
# File 'app/services/hr_lite/payroll_run_processor.rb', line 6

def self.call(run)
  new(run).call
end

Instance Method Details

#call ⇒ Object 



14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
 
# File 'app/services/hr_lite/payroll_run_processor.rb', line 14

def call
  # First in the list on purpose: if the statutory card is from an older
  # financial year, every number below it is computed on last year's
  # rates and that is the thing to read first.
  warnings = Array(StatutoryRateCard.warning_for(@run.period_month))
  warnings.concat(Array(StatutoryRateCard.unverified_for(@run.period_month)))

  ActiveRecord::Base.transaction do
    eligible = EmployeeProfile.active_for(@run.period_month).includes(:user).to_a
    keep_ids = []
    unconfigured_states = []

    eligible.each do |profile|
      user = profile.user
      structure = SalaryStructure.effective_for(user, @run.period_month)
      if structure.nil?
        warnings << "No salary structure for #{HrLite.display_name(user)} — skipped"
        next
      end

      # Professional tax is a state levy, and a state nobody has entered
      # slabs for deducts nothing — which looks exactly like a state that
      # levies nothing. Collected per state rather than per employee so a
      # forty-person office is one line, not forty.
      if Calculators::ProfessionalTax.unconfigured?(structure.pt_state, @run.period_month)
        unconfigured_states << structure.pt_state
      end

      slip = @run.salary_slips.find_or_initialize_by(user_id: user.id)
      attributes = SlipBuilder.call(
        run: @run, user: user, structure: structure, profile: profile,
        lop_override: slip.lop_override, tds_override: slip.tds_override
      )
      if attributes[:total_deductions] > attributes[:gross_earnings]
        warnings << "Deductions exceed earnings for #{HrLite.display_name(user)} — " \
                    "net pay floored at zero, review the overrides"
      end

      slip.assign_attributes(attributes)
      slip.save!
      keep_ids << slip.id
    end

    unconfigured_states.uniq.sort.each do |state|
      warnings << "No professional-tax slabs are configured for " \
                  "#{state.to_s.humanize} — everybody there is being deducted ₹0. " \
                  "Enter that state's bands, or set their structures to 'none' if " \
                  "it genuinely levies no PT."
    end

    @run.salary_slips.where.not(id: keep_ids).destroy_all
    @run.update!(warnings: warnings)
  end

  @run
end