fx.py

@@ -0,0 +1,62 @@
+from __future__ import annotations
+
+import dataclasses
+import sys
+import typing
+
+import cache
+import roi
+
+def main() -> None:
+	from_cx, to_cx = sys.argv[1:]
+	raw_prices: list[RawPrice] = cache.get('https://refined-prun.github.io/refined-prices/all.json')
+	materials: dict[str, roi.Material] = {m['Ticker']: m for m in cache.get('https://api.prunplanner.org/data/materials')}
+
+	bids: dict[str, float] = {}
+	for price in raw_prices:
+		if price['ExchangeCode'] != to_cx or price['Bid'] is None:
+			continue
+		assert price['Bid'] is not None
+		bids[price['MaterialTicker']] = price['Bid']
+
+	rates: list[FX] = []
+	for price in raw_prices:
+		if price['ExchangeCode'] != from_cx or price['Ask'] is None or (to_price := bids.get(price['MaterialTicker'])) is None:
+			continue
+		rate = (price['Ask'] - to_price) / to_price
+		if rate < 0.01:
+			rates.append(FX(price['MaterialTicker'], to_price, rate, price['AskCount']))
+	rates.sort()
+
+	print('mat  rate     per shipping  max converted')
+	for rate in rates:
+		mat = materials[rate.ticker]
+		if mat['Weight'] >= mat['Volume']:
+			if (per_t := rate.to_price / mat['Weight']) < 1000:
+				continue
+			per_shipping = f'{per_t:9,.0f}/t '
+		else:
+			if (per_m3 := rate.to_price / mat['Volume']) < 1000:
+				continue
+			per_shipping = f'{per_m3:9,.0f}/m³'
+		print(f'{rate.ticker:4} {rate.rate:8.5f} {per_shipping} {rate.depth * rate.to_price:12,.0f}')
+
+class RawPrice(typing.TypedDict):
+	MaterialTicker: str
+	ExchangeCode: str
+	Ask: float | None
+	Bid: float | None
+	AskCount: int
+
+@dataclasses.dataclass(eq=False, frozen=True, slots=True)
+class FX:
+	ticker: str
+	to_price: float
+	rate: float
+	depth: int
+
+	def __lt__(self, other: FX) -> bool:
+		return self.rate < other.rate
+
+if __name__ == '__main__':
+	main()