import {z} from 'zod'

export type Date = string;

export type ResourceId = string;

export type EventTopicsMatch = {id: {any: Array<ResourceId>, all: unknown} | {all: Array<ResourceId>, any: unknown}};

export type EventEntitiesMatch = {id: {any: Array<ResourceId>, all?: Array<unknown> | undefined} | {all: Array<ResourceId>, any?: Array<unknown> | undefined}};

export type EventMatch = {date?: ({gt?: Date | undefined, gte?: Date | undefined, lt?: Date | undefined, lte?: Date | undefined}) | undefined, topics?: EventTopicsMatch | undefined, entities?: EventEntitiesMatch | undefined, labels?: ({any?: Array<string> | undefined} | {all?: Array<string> | undefined}) | undefined, sources?: ({id: {any: Array<ResourceId>, all: unknown} | {all: Array<ResourceId>, any: unknown}}) | undefined};

export type EventExclude = {entities?: {id: {any: Array<ResourceId>}} | undefined, topics?: {id: {any: Array<ResourceId>}} | undefined, labels?: ({any?: Array<string> | undefined}) | undefined, sources?: {id: {any: Array<ResourceId>}} | undefined};

export type Base64String = string;

export type EventSearchQuery = {where: EventMatch, exclude?: EventExclude | undefined, size?: number | undefined, 'from-cursor'?: Base64String | undefined};

export type CreateApiEventsArgs = {body: EventSearchQuery};

export type CreateApiEventsOptions = {baseUrl?: string | undefined, OAuth2?: string | undefined, fetch?: typeof fetch | undefined};

export const date = z.string();

export const eventHash = z.string();

export const resourceId = z.string();

export const entityType = z.enum(["person", "organisation", "location", "substance", "disease", "product", "regulation"]);

export const eventEntity = z.object({id: resourceId, type: entityType, name: z.string(), "story-count": z.number().int().optional(), "prominence-score": z.number().optional()});

export const eventTopic = z.object({id: resourceId, name: z.string(), "story-count": z.number().int().optional(), "prominence-score": z.number().optional()});

export const event = z.object({labels: z.array(z.string()), date: date, "document-count-entitlements": z.number().int(), hash: eventHash, "story-count-global": z.number().int(), "story-ids": z.array(resourceId), "document-count-global": z.number().int(), entities: z.array(eventEntity), topics: z.array(eventTopic), "source-count-global": z.number().int().nullable().optional()});

export const base64String = z.string();

export const eventSearchResponse = z.object({events: z.array(event), "event-hash-expiry": z.string(), "next-cursor": base64String.nullable().optional(), stats: z.object({total: z.array(z.unknown())})});

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
};

/**
 * Events Search
 * 
 * POST /events
 */
export const createApiEvents = async (args: CreateApiEventsArgs, options?: CreateApiEventsOptions) => {
const {baseUrl = "https://api.signal-ai.com", fetch: fetchFn = fetch, OAuth2} = options ?? {}

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

if (OAuth2 !== undefined) headers.set('authorization', `Bearer ${OAuth2}`)

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

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

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

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