feat: Add endpoints to retrieve summary of team/agents over a period of time (#8916)

- Internal APIs to prototype reporting improvements.

app/builders/v2/reports/agent_summary_builder.rb

@@ -0,0 +1,53 @@
+class V2::Reports::AgentSummaryBuilder < V2::Reports::BaseSummaryBuilder
+  pattr_initialize [:account!, :params!]
+
+  def build
+    set_grouped_conversations_count
+    set_grouped_avg_reply_time
+    set_grouped_avg_first_response_time
+    set_grouped_avg_resolution_time
+    prepare_report
+  end
+
+  private
+
+  def set_grouped_conversations_count
+    @grouped_conversations_count = Current.account.conversations.where(created_at: range).group('assignee_id').count
+  end
+
+  def set_grouped_avg_resolution_time
+    @grouped_avg_resolution_time = get_grouped_average(reporting_events.where(name: 'conversation_resolved'))
+  end
+
+  def set_grouped_avg_first_response_time
+    @grouped_avg_first_response_time = get_grouped_average(reporting_events.where(name: 'first_response'))
+  end
+
+  def set_grouped_avg_reply_time
+    @grouped_avg_reply_time = get_grouped_average(reporting_events.where(name: 'reply_time'))
+  end
+
+  def group_by_key
+    :user_id
+  end
+
+  def reporting_events
+    @reporting_events ||= Current.account.reporting_events.where(created_at: range)
+  end
+
+  def prepare_report
+    account.account_users.each_with_object([]) do |account_user, arr|
+      arr << {
+        id: account_user.user_id,
+        conversations_count: @grouped_conversations_count[account_user.user_id],
+        avg_resolution_time: @grouped_avg_resolution_time[account_user.user_id],
+        avg_first_response_time: @grouped_avg_first_response_time[account_user.user_id],
+        avg_reply_time: @grouped_avg_reply_time[account_user.user_id]
+      }
+    end
+  end
+
+  def average_value_key
+    ActiveModel::Type::Boolean.new.cast(params[:business_hours]).present? ? :value_in_business_hours : :value
+  end
+end

app/builders/v2/reports/base_summary_builder.rb

@@ -0,0 +1,17 @@
+class V2::Reports::BaseSummaryBuilder
+  include DateRangeHelper
+
+  private
+
+  def group_by_key
+    # Override this method
+  end
+
+  def get_grouped_average(events)
+    events.group(group_by_key).average(average_value_key)
+  end
+
+  def average_value_key
+    params[:business_hours].present? ? :value_in_business_hours : :value
+  end
+end

app/builders/v2/reports/team_summary_builder.rb

@@ -0,0 +1,49 @@
+class V2::Reports::TeamSummaryBuilder < V2::Reports::BaseSummaryBuilder
+  pattr_initialize [:account!, :params!]
+
+  def build
+    set_grouped_conversations_count
+    set_grouped_avg_reply_time
+    set_grouped_avg_first_response_time
+    set_grouped_avg_resolution_time
+    prepare_report
+  end
+
+  private
+
+  def set_grouped_conversations_count
+    @grouped_conversations_count = Current.account.conversations.where(created_at: range).group('team_id').count
+  end
+
+  def set_grouped_avg_resolution_time
+    @grouped_avg_resolution_time = get_grouped_average(reporting_events.where(name: 'conversation_resolved'))
+  end
+
+  def set_grouped_avg_first_response_time
+    @grouped_avg_first_response_time = get_grouped_average(reporting_events.where(name: 'first_response'))
+  end
+
+  def set_grouped_avg_reply_time
+    @grouped_avg_reply_time = get_grouped_average(reporting_events.where(name: 'reply_time'))
+  end
+
+  def reporting_events
+    @reporting_events ||= Current.account.reporting_events.where(created_at: range).joins(:conversation)
+  end
+
+  def group_by_key
+    'conversations.team_id'
+  end
+
+  def prepare_report
+    account.teams.each_with_object([]) do |team, arr|
+      arr << {
+        id: team.id,
+        conversations_count: @grouped_conversations_count[team.id],
+        avg_resolution_time: @grouped_avg_resolution_time[team.id],
+        avg_first_response_time: @grouped_avg_first_response_time[team.id],
+        avg_reply_time: @grouped_avg_reply_time[team.id]
+      }
+    end
+  end
+end