import {z} from 'zod'

export type GetApiV1ConversationsArgs = {limit?: number | undefined, offset?: number | undefined, order?: string | undefined, 'metadata.application'?: (string | null) | undefined, include_deleted?: boolean | undefined};

export type GetApiV1ConversationsOptions = {baseUrl?: string | undefined, HTTPBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const conversationResponse = z.object({id: z.string(), object: z.string().optional(), metadata: z.record(z.string(), z.string()).optional(), created_at: z.number().int(), updated_at: z.number().int()});

export const conversationListResponse = z.object({object: z.string().optional(), data: z.array(conversationResponse), has_more: z.boolean(), first_id: z.string().nullable().optional(), last_id: 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
};

/**
 * List Conversations Endpoint
 * 
 * GET /v1/conversations
 */
export const getApiV1Conversations = async (args: GetApiV1ConversationsArgs, options?: GetApiV1ConversationsOptions) => {
const {baseUrl = "https://api.pharia.example.com", fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (args.limit != null) query.append("limit", String(args.limit))
if (args.offset != null) query.append("offset", String(args.offset))
if (args.order != null) query.append("order", String(args.order))
if (args['metadata.application'] != null) query.append("metadata.application", String(args['metadata.application']))
if (args.include_deleted != null) query.append("include_deleted", String(args.include_deleted))
if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

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