ammocpr/lib/ammoprices/scraping/caliber_matcher.ex
Graham McIntire bbe5bde145
Initial implementation of ammo price tracker
Phoenix 1.8 app that scrapes ammunition retailers (Lucky Gunner,
SGAmmo) for price data and displays historical price trends.

- Data model: retailers, calibers, products, price snapshots
- Scraper infrastructure with Req, Floki, realistic browser headers
- Oban-scheduled scrape jobs (every 4h with randomized delays)
- LiveView pages: homepage with category cards, caliber detail with
  price table, Chart.js price history, and price stats banner
- 18 seeded calibers across handgun/rifle/rimfire/shotgun categories
- 77 tests
2026-03-11 15:58:12 -05:00

21 lines
567 B
Elixir

defmodule Ammoprices.Scraping.CaliberMatcher do
@moduledoc false
def match(title, calibers) do
downcased = String.downcase(title)
Enum.find(calibers, fn caliber ->
name_matches?(downcased, caliber) or alias_matches?(downcased, caliber)
end)
end
defp name_matches?(downcased_title, caliber) do
String.contains?(downcased_title, String.downcase(caliber.name))
end
defp alias_matches?(downcased_title, caliber) do
Enum.any?(caliber.aliases, fn a ->
String.contains?(downcased_title, String.downcase(a))
end)
end
end