-- dbt Gold Industrial Emission Compliance & Load Mart
SELECT 
  region_zone,
  industry_sector,
  COUNT(log_id) AS total_telemetry_events,
  COUNT(DISTINCT source_id) AS active_chimneys_count,
  ROUND(AVG(so2_mg_nm3), 2) AS avg_so2_concentration,
  ROUND(AVG(nox_mg_nm3), 2) AS avg_nox_concentration,
  ROUND(AVG(pm_dust_mg_nm3), 2) AS avg_pm_concentration,
  ROUND(SUM(so2_mass_rate_kg_h) / 1000.0, 3) AS total_so2_emission_ton,
  ROUND(SUM(nox_mass_rate_kg_h) / 1000.0, 3) AS total_nox_emission_ton,
  ROUND(SUM(pm_mass_rate_kg_h) / 1000.0, 3) AS total_pm_emission_ton,
  COUNT(CASE WHEN compliance_status = 'EXCEEDING_LIMIT' THEN 1 END) AS total_violations_count,
  ROUND(
    (COUNT(CASE WHEN compliance_status = 'COMPLIANT' THEN 1 END)::NUMERIC / NULLIF(COUNT(log_id), 0)) * 100.0,
    2
  ) AS compliance_rate_percent,
  CURRENT_TIMESTAMP AS mart_refreshed_at
FROM {{ ref('silver_cems_emission_enriched') }}
GROUP BY region_zone, industry_sector
ORDER BY total_violations_count DESC, total_so2_emission_ton DESC