import {z} from 'zod'

export type GetApiGamesIdArgs = {id: string};

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

export const gamePlatformMetacritic = z.object({metascore: z.number().int().optional(), url: z.string().min(1).optional()});

export const gameSingle = z.object({id: z.number().int().optional(), slug: z.string().min(1).optional(), name: z.string().min(1).optional(), name_original: z.string().min(1).optional(), description: z.string().min(1).optional(), metacritic: z.number().int().optional(), metacritic_platforms: z.array(gamePlatformMetacritic).optional(), released: z.string().optional(), tba: z.boolean().optional(), updated: z.string().optional(), background_image: z.string().optional(), background_image_additional: z.string().optional(), website: z.string().min(1).optional(), rating: z.number(), rating_top: z.number().int().optional(), ratings: z.object({}).optional(), reactions: z.object({}).optional(), added: z.number().int().optional(), added_by_status: z.object({}).optional(), playtime: z.number().int().optional(), screenshots_count: z.number().int().optional(), movies_count: z.number().int().optional(), creators_count: z.number().int().optional(), achievements_count: z.number().int().optional(), parent_achievements_count: z.string().optional(), reddit_url: z.string().min(1).optional(), reddit_name: z.string().min(1).optional(), reddit_description: z.string().min(1).optional(), reddit_logo: z.string().min(1).optional(), reddit_count: z.number().int().optional(), twitch_count: z.string().optional(), youtube_count: z.string().optional(), reviews_text_count: z.string().optional(), ratings_count: z.number().int().optional(), suggestions_count: z.number().int().optional(), alternative_names: z.array(z.string().min(1).max(200)).optional(), metacritic_url: z.string().min(1).optional(), parents_count: z.number().int().optional(), additions_count: z.number().int().optional(), game_series_count: z.number().int().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 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 details of the game.
 * 
 * GET /games/{id}
 */
export const getApiGamesId = async (args: GetApiGamesIdArgs, options?: GetApiGamesIdOptions) => {
const {baseUrl = "https://api.rawg.io/api", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/games/${encodeURIComponent(String(args.id))}${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(gameSingle, await res.json())
};