import {z} from 'zod'

export type GetApiAiConversationsConversationIdMessagesArgs = {conversation_id: string, 'page[size]'?: number | undefined, 'page[number]'?: number | undefined};

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

export const conversationMessage = z.object({role: z.enum(["user", "assistant", "tool"]), text: z.string(), tool_calls: z.array(z.object({id: z.string(), type: z.literal("function"), function: z.object({name: z.string(), arguments: z.string()})})).optional(), created_at: z.string().optional(), sent_at: z.string().optional(), metadata: z.record(z.string(), z.union([z.string(), z.number().int(), z.boolean(), z.array(z.union([z.string(), z.number().int(), z.boolean()]))])).optional()});

export const meta = z.object({total_pages: z.number().int(), total_results: z.number().int(), page_number: z.number().int(), page_size: z.number().int()});

export const conversationMessageListData = z.object({data: z.array(conversationMessage), meta: meta});

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 conversation messages
 * 
 * GET /ai/conversations/{conversation_id}/messages
 */
export const getApiAiConversationsConversationIdMessages = async (args: GetApiAiConversationsConversationIdMessagesArgs, options?: GetApiAiConversationsConversationIdMessagesOptions) => {
const {baseUrl = "https://api.telnyx.com/v2", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args['page[size]'] != null) query.append("page[size]", String(args['page[size]']))
if (args['page[number]'] != null) query.append("page[number]", String(args['page[number]']))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/ai/conversations/${encodeURIComponent(String(args.conversation_id))}/messages${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(conversationMessageListData, await res.json())
};