import {z} from 'zod'

export type Venue = 'kalshi' | 'polymarket';

export type SubcategorySlug = 'nba' | 'ncaa' | 'nfl' | 'nhl' | 'mlb' | 'ufc' | 'lol' | 'epl' | 'efl' | 'la_liga' | 'world_cup' | 'bundesliga' | 'liga_portugal' | 'ligue_1' | 'f1' | 'ipl' | 'btc' | 'eth' | 'sol' | 'stocks' | 'indices' | 'etfs' | 'earnings' | 'rates' | 'inflation' | 'commodities' | 'fx' | 'jobs' | 'ai' | 'companies' | 'other';

export type GetApiMarketsArgs = {category?: ('politics' | 'sports' | 'crypto' | 'finance' | 'economics' | 'entertainment' | 'weather' | 'tech' | 'all') | undefined, venue?: Venue | undefined, subcategory?: SubcategorySlug | undefined, frequency?: ('daily' | 'weekly' | 'monthly' | 'hourly') | undefined, date_filter?: ('1h' | '1h-1d' | '1d-7d' | 'today' | 'this_week' | 'this_month' | 'all') | undefined, search?: string | undefined, cursor?: string | undefined, limit?: number | undefined, markets_per_event?: number | undefined};

export type GetApiMarketsOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const venue = z.enum(["kalshi", "polymarket"]);

export const market = z.object({ticker: z.string().optional(), event_ticker: z.string().optional(), series_ticker: z.string().optional(), title: z.string().optional(), subtitle: z.string().nullable().optional(), yes_sub_title: z.string().nullable().optional(), no_sub_title: z.string().nullable().optional(), bet_group: z.string().nullable().optional(), category: z.string().optional(), subcategory: z.string().nullable().optional(), frequency: z.string().nullable().optional(), venue: venue.optional(), status: z.string().optional(), yes_bid: z.number().optional(), yes_ask: z.number().optional(), no_bid: z.number().optional(), no_ask: z.number().optional(), last_price: z.number().optional(), price_to_beat: z.number().nullable().optional(), volume: z.number().int().optional(), volume_24h: z.number().int().optional(), open_interest: z.number().int().optional(), venue_url: z.string().nullable().optional(), open_time: z.string().optional(), close_time: z.string().optional(), expiration_time: z.string().optional(), exclusion_keys: z.array(z.string()).optional()});

export const eventGroup = z.object({event_ticker: z.string(), series_ticker: z.string(), series_title: z.string().nullable().optional(), event_title: z.string().nullable().optional(), event_sub_title: z.string().nullable().optional(), category: z.string(), image_url: z.string().nullable().optional(), total_markets: z.number().int(), markets: z.array(market)});

export const subcategorySlug = z.enum(["nba", "ncaa", "nfl", "nhl", "mlb", "ufc", "lol", "epl", "efl", "la_liga", "world_cup", "bundesliga", "liga_portugal", "ligue_1", "f1", "ipl", "btc", "eth", "sol", "stocks", "indices", "etfs", "earnings", "rates", "inflation", "commodities", "fx", "jobs", "ai", "companies", "other"]);

export const getApiMarketsResponse = z.object({data: z.object({events: z.array(eventGroup).optional()}).optional(), meta: z.object({cursor: z.string().nullable().optional(), has_more: z.boolean().optional(), limit: z.number().int().optional(), offset: z.number().int().optional(), total: z.number().int().optional(), total_events: z.number().int().optional(), available_subcategories: z.array(subcategorySlug).optional(), available_frequencies: z.array(z.enum(["daily", "weekly", "monthly", "hourly"])).optional()}).optional()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * List Markets
 * 
 * GET /markets
 */
export const getApiMarkets = async (args: GetApiMarketsArgs, options?: GetApiMarketsOptions) => {
const {baseUrl = "https://api.totalis.trade", fetch: fetchFn = fetch} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

if (args.category != null) query.append("category", String(args.category))
if (args.venue != null) query.append("venue", String(args.venue))
if (args.subcategory != null) query.append("subcategory", String(args.subcategory))
if (args.frequency != null) query.append("frequency", String(args.frequency))
if (args.date_filter != null) query.append("date_filter", String(args.date_filter))
if (args.search != null) query.append("search", String(args.search))
if (args.cursor != null) query.append("cursor", String(args.cursor))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.markets_per_event != null) query.append("markets_per_event", String(args.markets_per_event))

const url = `${baseUrl.replace(/\/+$/, '')}/markets${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(getApiMarketsResponse, await res.json())
};