import {z} from 'zod'

export type GetApiConversationsArgs = {page_token?: string | undefined, limit?: number | undefined, updated_from?: string | undefined, entity_type?: 'ORDER' | undefined, entity_ids?: Array<string> | undefined, conversation_ids?: Array<string> | undefined};

export type GetApiConversationsOptions = {baseUrl?: string | undefined, Bearer?: string | undefined, fetch?: typeof fetch | undefined};

export const conversationOrigin = z.object({channel_id: z.string(), channel_name: z.string(), channel_store_id: z.string(), channel_store_name: z.string()});

export const conversationParticipant = z.object({id: z.string().optional(), name: z.string(), type: z.enum(["CHANNEL", "CUSTOMER"])});

export const conversationResponse = z.object({anonymized_at: z.string().optional(), channel_conversation_id: z.string(), created_at: z.string(), entity: z.object({channel_entity_id: z.string(), id: z.string().optional(), type: z.literal("ORDER")}), id: z.string(), origin: conversationOrigin, participants: z.array(conversationParticipant), topic: z.object({type: z.literal("FREE_TEXT"), value: z.string().max(500)}), updated_at: z.string()});

export const conversationsPageResponse = z.object({next_page_token: z.string().min(1).optional(), previous_page_token: z.string().min(1).optional(), data: z.array(conversationResponse)});

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
};

/**
 * listConversations - List all order conversations
 * 
 * GET /conversations
 */
export const getApiConversations = async (args: GetApiConversationsArgs, options?: GetApiConversationsOptions) => {
const {baseUrl = "https://miraklconnect.com/api", fetch: fetchFn = fetch, Bearer} = options ?? {}

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

if (args.page_token != null) query.append("page_token", String(args.page_token))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.updated_from != null) query.append("updated_from", String(args.updated_from))
if (args.entity_type != null) query.append("entity_type", String(args.entity_type))
for (const item of args.entity_ids ?? []) query.append("entity_ids", String(item))
for (const item of args.conversation_ids ?? []) query.append("conversation_ids", String(item))
if (Bearer !== undefined) headers.set('authorization', `Bearer ${Bearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/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(conversationsPageResponse, await res.json())
};