import {z} from 'zod'

export type CursorPaginationParams = {after?: (string | null) | undefined, first?: number | undefined};

export type GetApiV3EnterpriseSessionsDevinIdMessagesArgs = {devin_id: string | null, qs: CursorPaginationParams, org_id?: (string | null) | undefined};

export type GetApiV3EnterpriseSessionsDevinIdMessagesOptions = {baseUrl: string, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const sessionMessage = z.object({created_at: z.number().int(), event_id: z.string(), message: z.string(), source: z.enum(["devin", "user"])});

export const paginatedResponseSessionMessage = z.object({end_cursor: z.string().nullable().optional(), has_next_page: z.boolean().optional(), items: z.array(sessionMessage), total: z.number().int().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 session messages
 * 
 * GET /v3/enterprise/sessions/{devin_id}/messages
 */
export const getApiV3EnterpriseSessionsDevinIdMessages = async (args: GetApiV3EnterpriseSessionsDevinIdMessagesArgs, options: GetApiV3EnterpriseSessionsDevinIdMessagesOptions) => {
const {baseUrl, fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.qs != null) query.append("qs", JSON.stringify(args.qs))
if (args.org_id != null) query.append("org_id", String(args.org_id))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v3/enterprise/sessions/${encodeURIComponent(String(args.devin_id))}/messages${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(paginatedResponseSessionMessage, await res.json())
};