import {z} from 'zod'

export type Callback = {requesterId: string, direction: string, contactEndpointId: string, queueId: string};

export type Html = {value: string};

export type Markdown = {value: string};

export type Text = {value: string};

export type Content = Html | Markdown | Text;

export type File = {url: string, prettyName?: string | undefined};

export type Inbound = {content: Content, attachments?: Array<File> | undefined, integrationEmail?: string | undefined, externalId?: string | undefined};

export type Outbound = {content?: Content | undefined, agentId: string, attachments?: Array<File> | undefined, integrationEmail?: string | undefined, externalId?: string | undefined, cc?: Array<string> | undefined, bcc?: Array<string> | undefined};

export type CreateMessageInput = Inbound | Outbound;

export type BrowserInfo = {name: string, version?: string | undefined, ipAddress?: string | undefined, originatingUrl?: string | undefined};

export type Chat = {requesterId: string, widgetId: string, message: CreateMessageInput, browserInfo?: BrowserInfo | undefined, language?: string | undefined};

export type ContactForm = {requesterId: string, emailIntegrationId: string, subject: string, message: CreateMessageInput, language?: string | undefined};

export type Email = {requesterId: string, emailIntegrationId: string, subject: string, message: CreateMessageInput, language?: string | undefined};

export type Sms = {requesterId: string, contactEndpointId: string, message: CreateMessageInput};

export type MapString = {[key: string]: string};

export type TemplateInput = {templateId: string, templateVariableMap?: MapString | undefined};

export type WhatsappOutboundMessage = {agentId: string, template: TemplateInput};

export type Whatsapp = {requesterId: string, contactEndpointId: string, message: WhatsappOutboundMessage};

export type CreateConversationInput = Callback | Chat | ContactForm | Email | Sms | Whatsapp;

export type CreateApiBetaConversationsArgs = {body: CreateConversationInput};

export type CreateApiBetaConversationsOptions = {baseUrl?: string | undefined, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const conversationResponse = z.object({id: z.number().int()});

export const createConversationOutput = z.object({data: 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
};

/**
 * Create conversation
 * 
 * POST /beta/conversations
 */
export const createApiBetaConversations = async (args: CreateApiBetaConversationsArgs, options?: CreateApiBetaConversationsOptions) => {
const {baseUrl = "https://dev.dixa.io", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (ApiKeyAuth !== undefined) headers.set("Authorization", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/beta/conversations${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(createConversationOutput, await res.json())
};