# tools/enrich.rb
# Enrich DA rows AFTER scrapers:
#  - Geocode (address_std, street/locality/state/postcode, lat/lng)
#  - PID + Title via list_lookup.php (property_id, title_reference, area_sqm/ha)
#
# Usage examples:
#   docker compose run --rm \
#     -e GOOGLE_MAPS_API_KEY="$GOOGLE_MAPS_API_KEY" \
#     -e LOOKUP_URL="http://web/list_lookup.php" \
#     scraper ruby /app/tools/enrich.rb
#
#   # Single table, slower throttle, dry run:
#   docker compose run --rm \
#     -e GOOGLE_MAPS_API_KEY="$GOOGLE_MAPS_API_KEY" \
#     -e LOOKUP_URL="http://web/list_lookup.php" \
#     -e GEOCODE_LIMIT=200 -e GEOCODE_THROTTLE_MS=200 \
#     -e LOOKUP_LIMIT=200  -e LOOKUP_THROTTLE_MS=250 \
#     -e DRY_RUN=1 \
#     scraper ruby /app/tools/enrich.rb --table=da_dorset

# lib/enrich.rb
require "json"
require "net/http"
require "uri"
require_relative "./db"
require_relative "./util"
require_relative "./geocode"

LOOKUP_URL   = ENV["LOOKUP_URL"] # e.g. http://web/list_lookup.php
ENRICH_DEBUG = ENV["ENRICH_DEBUG"] == "1"

def log_enrich(msg)
  puts msg if ENRICH_DEBUG
end

def ensure_extra_columns!(table)
  esc = DB.client.escape(table)
  {
    "address_std"        => "VARCHAR(255) NULL",
    "lat"                => "DOUBLE NULL",
    "lng"                => "DOUBLE NULL",
    "property_id"        => "VARCHAR(50) NULL",
    "title_reference"    => "VARCHAR(80) NULL",
    "local_document_url" => "TEXT NULL",
    "on_notice_to"       => "DATE NULL",
    "on_notice_to_raw"   => "VARCHAR(80) NULL"
  }.each do |col, defn|
    DB.client.query("ALTER TABLE `#{esc}` ADD COLUMN IF NOT EXISTS `#{col}` #{defn}")
  rescue Mysql2::Error => e
    warn "[enrich] schema migration skipped for #{table}.#{col}: #{e.message}"
  end
end

def http_post_json(url, payload, timeout: 15)
  uri = URI.parse(url)
  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = (uri.scheme == "https")
  http.read_timeout = timeout
  http.open_timeout = timeout
  req = Net::HTTP::Post.new(uri.request_uri)
  req["Content-Type"] = "application/json"
  req.body = JSON.generate(payload)
  res = http.request(req)
  raise "HTTP #{res.code}" unless res.is_a?(Net::HTTPSuccess)
  JSON.parse(res.body)
rescue JSON::ParserError
  {}
end

# Call this right after DB.upsert in each scraper
#   enrich_after_upsert!(table: TABLE, council_reference: council_reference, address: address)
def enrich_after_upsert!(table:, council_reference:, address:)
  ensure_extra_columns!(table)

  esc = DB.client.escape(table)
  sel = DB.client.prepare("SELECT id, address, address_std, lat, lng, property_id, title_reference FROM `#{esc}` WHERE council_reference = ? AND address = ? LIMIT 1")
  row = sel.execute(council_reference, address).first
  return unless row

  # 1) Geocode if missing lat/lng or std address
  if row["lat"].nil? || row["lng"].nil? || (row["address_std"].to_s.strip.empty?)
    begin
      geo = Geocode.format_au(row["address"])
      Geocode.update_da_row!(
        table: table,
        council_reference: council_reference,
        orig_address: row["address"],
        geo: geo
      )
      log_enrich("enrich: geocoded #{table} #{council_reference}")
      # refresh row to fetch lat/lng for next step
      row = sel.execute(council_reference, address).first
    rescue => e
      warn "[enrich] geocode failed #{table} #{council_reference}: #{e.class} #{e.message}"
    end
  end

  # 2) LIST lookup only if we have coords and something’s missing
  need_pid   = row["property_id"].to_s.strip.empty?
  need_title = row["title_reference"].to_s.strip.empty?
  if LOOKUP_URL && row["lat"] && row["lng"] && (need_pid || need_title)
    begin
      resp = http_post_json(LOOKUP_URL, { lat: row["lat"], lng: row["lng"] })
      if resp["ok"]
        pid   = (resp["pid"] || "").to_s
        title = (resp["title_id"] || "").to_s
        upd = DB.client.prepare("UPDATE `#{esc}` SET property_id = COALESCE(NULLIF(?,’’), property_id), title_reference = COALESCE(NULLIF(?,’’), title_reference) WHERE council_reference = ? AND address = ?")
        upd.execute(pid, title, council_reference, address)
        log_enrich("enrich: lookup ok #{table} #{council_reference} pid=#{pid} title=#{title}")
      else
        warn "[enrich] lookup error #{table} #{council_reference}: #{resp["error"]}"
      end
    rescue => e
      warn "[enrich] lookup failed #{table} #{council_reference}: #{e.class} #{e.message}"
    end
  end
end