# frozen_string_literal: true

# One-time job to bootstrap Parquet export system
# Exports all existing DuckDB data to weekly Parquet archives
# Run this once when setting up Parquet exports for the first time
#
# Usage:
#   BootstrapParquetExportJob.perform_now
#   # or via docker:
#   docker compose exec jobs bin/rails runner "BootstrapParquetExportJob.perform_now"
class BootstrapParquetExportJob < ApplicationJob
  queue_as :default

  def perform
    service = AnalyticsDuckdbService.instance

    # Check if DuckDB has any data
    event_count = service.event_count
    Rails.logger.info "[Parquet Bootstrap] DuckDB event count: #{event_count}"

    if event_count == 0
      Rails.logger.warn "[Parquet Bootstrap] No events in DuckDB. Run SyncEventsToDuckdbJob first."
      return
    end

    # Check if Parquet files already exist
    existing_weeks = Dir.glob(AnalyticsDuckdbService::PARQUET_WEEKS_PATH.join("*.parquet")).size
    if existing_weeks > 0
      Rails.logger.info "[Parquet Bootstrap] Found #{existing_weeks} existing week archives"
    end

    Rails.logger.info "[Parquet Bootstrap] Starting export of all DuckDB data to Parquet..."

    start_time = Time.current

    # Run the bootstrap export
    service.export_all_to_parquet

    duration = Time.current - start_time
    week_count = Dir.glob(AnalyticsDuckdbService::PARQUET_WEEKS_PATH.join("*.parquet")).size

    Rails.logger.info "[Parquet Bootstrap] Complete!"
    Rails.logger.info "[Parquet Bootstrap] - Time taken: #{duration.round(2)} seconds"
    Rails.logger.info "[Parquet Bootstrap] - Week archives: #{week_count}"
    Rails.logger.info "[Parquet Bootstrap] - Storage: #{AnalyticsDuckdbService::PARQUET_BASE_PATH}"
    Rails.logger.info "[Parquet Bootstrap] System is ready - jobs will maintain exports automatically"
  rescue StandardError => e
    Rails.logger.error "[Parquet Bootstrap] Job failed: #{e.message}"
    Rails.logger.error e.backtrace.join("\n")
    raise # Re-raise to mark job as failed
  end
end