import {z} from 'zod'

export type GetApiGamesArgs = {page?: number | undefined, page_size?: number | undefined, search?: string | undefined, search_precise?: boolean | undefined, search_exact?: boolean | undefined, parent_platforms?: string | undefined, platforms?: string | undefined, stores?: string | undefined, developers?: string | undefined, publishers?: string | undefined, genres?: string | undefined, tags?: string | undefined, creators?: string | undefined, dates?: string | undefined, updated?: string | undefined, platforms_count?: number | undefined, metacritic?: string | undefined, exclude_collection?: number | undefined, exclude_additions?: boolean | undefined, exclude_parents?: boolean | undefined, exclude_game_series?: boolean | undefined, exclude_stores?: string | undefined, ordering?: string | undefined};

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

export const game = z.object({id: z.number().int().optional(), slug: z.string().min(1).optional(), name: z.string().min(1).optional(), released: z.string().optional(), tba: z.boolean().optional(), background_image: z.string().optional(), rating: z.number(), rating_top: z.number().int().optional(), ratings: z.object({}).optional(), ratings_count: z.number().int().optional(), reviews_text_count: z.string().optional(), added: z.number().int().optional(), added_by_status: z.object({}).optional(), metacritic: z.number().int().optional(), playtime: z.number().int().optional(), suggestions_count: z.number().int().optional(), updated: z.string().optional(), esrb_rating: z.object({id: z.number().int().optional(), slug: z.enum(["everyone", "everyone-10-plus", "teen", "mature", "adults-only", "rating-pending"]).optional(), name: z.enum(["Everyone", "Everyone 10+", "Teen", "Mature", "Adults Only", "Rating Pending"]).optional()}).nullable().optional(), platforms: z.array(z.object({platform: z.object({id: z.number().int().optional(), slug: z.string().optional(), name: z.string().optional()}).optional(), released_at: z.string().nullable().optional(), requirements: z.object({minimum: z.string().optional(), recommended: z.string().optional()}).nullable().optional()})).optional()});

export const getApiGamesResponse = z.object({count: z.number().int(), next: z.string().nullable().optional(), previous: z.string().nullable().optional(), results: z.array(game)});

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
};

/**
 * Get a list of games.
 * 
 * GET /games
 */
export const getApiGames = async (args: GetApiGamesArgs, options?: GetApiGamesOptions) => {
const {baseUrl = "https://api.rawg.io/api", fetch: fetchFn = fetch} = options ?? {}

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

if (args.page != null) query.append("page", String(args.page))
if (args.page_size != null) query.append("page_size", String(args.page_size))
if (args.search != null) query.append("search", String(args.search))
if (args.search_precise != null) query.append("search_precise", String(args.search_precise))
if (args.search_exact != null) query.append("search_exact", String(args.search_exact))
if (args.parent_platforms != null) query.append("parent_platforms", String(args.parent_platforms))
if (args.platforms != null) query.append("platforms", String(args.platforms))
if (args.stores != null) query.append("stores", String(args.stores))
if (args.developers != null) query.append("developers", String(args.developers))
if (args.publishers != null) query.append("publishers", String(args.publishers))
if (args.genres != null) query.append("genres", String(args.genres))
if (args.tags != null) query.append("tags", String(args.tags))
if (args.creators != null) query.append("creators", String(args.creators))
if (args.dates != null) query.append("dates", String(args.dates))
if (args.updated != null) query.append("updated", String(args.updated))
if (args.platforms_count != null) query.append("platforms_count", String(args.platforms_count))
if (args.metacritic != null) query.append("metacritic", String(args.metacritic))
if (args.exclude_collection != null) query.append("exclude_collection", String(args.exclude_collection))
if (args.exclude_additions != null) query.append("exclude_additions", String(args.exclude_additions))
if (args.exclude_parents != null) query.append("exclude_parents", String(args.exclude_parents))
if (args.exclude_game_series != null) query.append("exclude_game_series", String(args.exclude_game_series))
if (args.exclude_stores != null) query.append("exclude_stores", String(args.exclude_stores))
if (args.ordering != null) query.append("ordering", String(args.ordering))

const url = `${baseUrl.replace(/\/+$/, '')}/games${query.size > 0 ? `?${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(getApiGamesResponse, await res.json())
};