import type { HeadlessPaneDefinition } from "../../../types/plugin";
import { fetchMoneyMarkets } from "./client";
import { moneyMarketChange, moneyMarketNotices, moneyMarketRows, moneyMarketValue } from "./model";

export const moneyMarketsHeadless: HeadlessPaneDefinition<"bundle"> = {
  discovery: { aliases: ["BTMM"], dataRequirements: ["Gloom Cloud money-markets endpoint"],
    limitations: ["Published daily and weekly observations", "Treasury bill discount yields", "Net liquidity is a same-date proxy"] },
  shape: "bundle", argument: { kind: "none" },
  options: [{ key: "tab", type: "enum", description: "Money-market view.", values: [{ value: "rates" }, { value: "bills" }, { value: "liquidity" }], defaultValue: "rates" }],
  describe: "US money markets",
  async load(args, ctx) {
    const data = await fetchMoneyMarkets(ctx.apiClient);
    const rows = moneyMarketRows(data, String(args.options.tab));
    const errors = moneyMarketNotices(data);
    const complete = data.status === "available" && errors.length === 0;
    return { complete, sections: [{ title: "Observations", columns: [
      { key: "label", header: "Instrument" },
      { key: "value", header: "Level", align: "right", format: (value, row) => moneyMarketValue(value as number | null, row.unit as "percent" | "usd-billions") },
      { key: "change", header: "Change", align: "right", format: (value, row) => moneyMarketChange(value as number | null, row.changeUnit as "basis-points" | "usd-billions") },
      { key: "previousAsOf", header: "Versus" },
      { key: "percentileValue", header: "Pctl 1Y", align: "right", format: (value) => value == null ? "--" : Number(value).toFixed(0) },
      { key: "asOf", header: "As of" }, { key: "status", header: "Status" },
    ], rows: rows.map(({ history: _history, ...row }) => ({ ...row, percentileValue: row.percentile.value })) }],
      errors, unavailableSymbols: rows.filter((row) => row.status === "unavailable").flatMap((row) => row.sourceSeriesIds),
      metadata: { ...data, complete, selectedTab: args.options.tab } };
  },
};