import type { GloomPlugin } from "../../../types/plugin";
import type { NewsArticle, NewsQuery } from "../../../types/news-source";
import type { NewsItem } from "../../../types/data-provider";
import { YahooFinanceClient } from "../../../sources/yahoo-finance";
import { assetDataProvider, newsProvider } from "../../../capabilities";

class YahooPluginProvider extends YahooFinanceClient {
  readonly priority = 1000;
}

function createYahooProvider() {
  return new YahooPluginProvider();
}

function yahooArticleId(item: NewsItem, ticker: string): string {
  return item.url || `${ticker}:${item.title}:${item.publishedAt.toISOString()}`;
}

function mapYahooNewsItem(item: NewsItem, ticker: string): NewsArticle {
  return {
    id: yahooArticleId(item, ticker),
    title: item.title,
    url: item.url,
    source: item.source || "Yahoo Finance",
    publishedAt: item.publishedAt,
    summary: item.summary,
    topic: "ticker",
    topics: ["ticker"],
    sectors: [],
    categories: [],
    tickers: [ticker],
    scores: {
      importance: 0,
      urgency: 0,
      marketImpact: 0,
      novelty: 0,
      confidence: 0,
    },
    importance: 0,
    isBreaking: false,
    isDeveloping: false,
  };
}

function createYahooNewsProvider(provider: YahooPluginProvider) {
  return {
    supports(query: NewsQuery): boolean {
      const feed = query.feed ?? (query.scope === "ticker" ? "ticker" : "latest");
      return feed === "ticker" && !!query.ticker;
    },
    async fetchNews(query: NewsQuery): Promise<NewsArticle[]> {
      const feed = query.feed ?? (query.scope === "ticker" ? "ticker" : "latest");
      if (feed !== "ticker" || !query.ticker) return [];
      const ticker = query.ticker.trim().toUpperCase();
      const items = await provider.getNews(ticker, query.limit ?? 50, query.exchange ?? "");
      return items.map((item) => mapYahooNewsItem(item, ticker));
    },
  };
}

const yahooProvider = createYahooProvider();

export const yahooPlugin: GloomPlugin = {
  id: "yahoo",
  name: "Yahoo Fallback",
  version: "1.0.0",
  description: "Built-in delayed fallback for quotes, fundamentals, charts, and unsupported cloud data.",
  capabilities: [
    assetDataProvider(yahooProvider),
    newsProvider({ id: "yahoo", name: "Yahoo Finance", priority: 1000, provider: createYahooNewsProvider(yahooProvider) }),
  ],
};