Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/builders/v2/reports/timeseries/average_report_builder.rb

@@ -0,0 +1,48 @@
+class V2::Reports::Timeseries::AverageReportBuilder < V2::Reports::Timeseries::BaseTimeseriesBuilder
+  def timeseries
+    grouped_average_time = reporting_events.average(average_value_key)
+    grouped_event_count = reporting_events.count
+    grouped_average_time.each_with_object([]) do |element, arr|
+      event_date, average_time = element
+      arr << {
+        value: average_time,
+        timestamp: event_date.in_time_zone(timezone).to_i,
+        count: grouped_event_count[event_date]
+      }
+    end
+  end
+
+  def aggregate_value
+    object_scope.average(average_value_key)
+  end
+
+  private
+
+  def event_name
+    metric_to_event_name = {
+      avg_first_response_time: :first_response,
+      avg_resolution_time: :conversation_resolved,
+      reply_time: :reply_time
+    }
+    metric_to_event_name[params[:metric].to_sym]
+  end
+
+  def object_scope
+    scope.reporting_events.where(name: event_name, created_at: range, account_id: account.id)
+  end
+
+  def reporting_events
+    @grouped_values = object_scope.group_by_period(
+      group_by,
+      :created_at,
+      default_value: 0,
+      range: range,
+      permit: %w[day week month year hour],
+      time_zone: timezone
+    )
+  end
+
+  def average_value_key
+    @average_value_key ||= params[:business_hours].present? ? :value_in_business_hours : :value
+  end
+end

research/chatwoot/app/builders/v2/reports/timeseries/base_timeseries_builder.rb

@@ -0,0 +1,46 @@
+class V2::Reports::Timeseries::BaseTimeseriesBuilder
+  include TimezoneHelper
+  include DateRangeHelper
+  DEFAULT_GROUP_BY = 'day'.freeze
+
+  pattr_initialize :account, :params
+
+  def scope
+    case params[:type].to_sym
+    when :account
+      account
+    when :inbox
+      inbox
+    when :agent
+      user
+    when :label
+      label
+    when :team
+      team
+    end
+  end
+
+  def inbox
+    @inbox ||= account.inboxes.find(params[:id])
+  end
+
+  def user
+    @user ||= account.users.find(params[:id])
+  end
+
+  def label
+    @label ||= account.labels.find(params[:id])
+  end
+
+  def team
+    @team ||= account.teams.find(params[:id])
+  end
+
+  def group_by
+    @group_by ||= %w[day week month year hour].include?(params[:group_by]) ? params[:group_by] : DEFAULT_GROUP_BY
+  end
+
+  def timezone
+    @timezone ||= timezone_name_from_offset(params[:timezone_offset])
+  end
+end

research/chatwoot/app/builders/v2/reports/timeseries/count_report_builder.rb

@@ -0,0 +1,78 @@
+class V2::Reports::Timeseries::CountReportBuilder < V2::Reports::Timeseries::BaseTimeseriesBuilder
+  def timeseries
+    grouped_count.each_with_object([]) do |element, arr|
+      event_date, event_count = element
+
+      # The `event_date` is in Date format (without time), such as "Wed, 15 May 2024".
+      # We need a timestamp for the start of the day. However, we can't use `event_date.to_time.to_i`
+      # because it converts the date to 12:00 AM server timezone.
+      # The desired output should be 12:00 AM in the specified timezone.
+      arr << { value: event_count, timestamp: event_date.in_time_zone(timezone).to_i }
+    end
+  end
+
+  def aggregate_value
+    object_scope.count
+  end
+
+  private
+
+  def metric
+    @metric ||= params[:metric]
+  end
+
+  def object_scope
+    send("scope_for_#{metric}")
+  end
+
+  def scope_for_conversations_count
+    scope.conversations.where(account_id: account.id, created_at: range)
+  end
+
+  def scope_for_incoming_messages_count
+    scope.messages.where(account_id: account.id, created_at: range).incoming.unscope(:order)
+  end
+
+  def scope_for_outgoing_messages_count
+    scope.messages.where(account_id: account.id, created_at: range).outgoing.unscope(:order)
+  end
+
+  def scope_for_resolutions_count
+    scope.reporting_events.where(
+      name: :conversation_resolved,
+      account_id: account.id,
+      created_at: range
+    )
+  end
+
+  def scope_for_bot_resolutions_count
+    scope.reporting_events.where(
+      name: :conversation_bot_resolved,
+      account_id: account.id,
+      created_at: range
+    )
+  end
+
+  def scope_for_bot_handoffs_count
+    scope.reporting_events.joins(:conversation).select(:conversation_id).where(
+      name: :conversation_bot_handoff,
+      account_id: account.id,
+      created_at: range
+    ).distinct
+  end
+
+  def grouped_count
+    # IMPORTANT: time_zone parameter affects both data grouping AND output timestamps
+    # It converts timestamps to the target timezone before grouping, which means
+    # the same event can fall into different day buckets depending on timezone
+    # Example: 2024-01-15 00:00 UTC becomes 2024-01-14 16:00 PST (falls on different day)
+    @grouped_values = object_scope.group_by_period(
+      group_by,
+      :created_at,
+      default_value: 0,
+      range: range,
+      permit: %w[day week month year hour],
+      time_zone: timezone
+    ).count
+  end
+end