import {z} from 'zod'

export type MentionType = 'Mention' | 'Forward';

export type GetApiV1ChannelMentionsArgs = {internal_id: string, from_date?: number | undefined, to_date?: number | undefined, kind?: MentionType | undefined, short_info?: boolean | undefined, cursor?: string | undefined};

export type GetApiV1ChannelMentionsOptions = {baseUrl?: string | undefined, apiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const mentionType = z.enum(["Mention", "Forward"]);

export const channelMentionShort = z.object({source_chat_id: z.string(), kind: mentionType, message_id: z.number().int().gte(0), date: z.string()});

export const peerType = z.enum(["Group", "Channel"]);

export const chatShort = z.object({internal_id: z.string(), peer: peerType, title: z.string(), photo_url: z.string().nullable().optional(), country: z.string().nullable().optional(), language: z.string().nullable().optional(), category: z.string().nullable().optional(), members_count: z.number().int().gte(0), verified: z.boolean()});

export const mentions = z.object({total: z.number().int().gte(0), mentions: z.array(channelMentionShort), chats: z.array(chatShort), cursor: z.string().nullable().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
};

/**
 * Mentions
 * 
 * GET /v1/channel/mentions
 */
export const getApiV1ChannelMentions = async (args: GetApiV1ChannelMentionsArgs, options?: GetApiV1ChannelMentionsOptions) => {
const {baseUrl = "https://api.tlmtr.io", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (args.internal_id != null) query.append("internal_id", String(args.internal_id))
if (args.from_date != null) query.append("from_date", String(args.from_date))
if (args.to_date != null) query.append("to_date", String(args.to_date))
if (args.kind != null) query.append("kind", String(args.kind))
if (args.short_info != null) query.append("short_info", String(args.short_info))
if (args.cursor != null) query.append("cursor", String(args.cursor))
if (apiKey !== undefined) headers.set("x-api-key", apiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/channel/mentions${query.size > 0 ? `?${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(mentions, await res.json())
};