import {z} from 'zod'

export type Channel = 'FACEBOOK' | 'WEB' | 'WHATSAPP' | 'INSTAGRAM';

export type CreateApiV1ConversationsArgs = {body: {channelId: string, companyId: string, channel: Channel, from: string, url?: string | undefined}};

export type CreateApiV1ConversationsOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const channel = z.enum(["FACEBOOK", "WEB", "WHATSAPP", "INSTAGRAM"]);

export const participant = z.object({id: z.string().optional(), name: z.string().optional(), type: z.enum(["robot", "visitor", "user", "externalOperator", "external_operator"]).optional(), addedAt: z.string().optional(), firstMessageAt: z.string().optional(), lastMessageAt: z.string().optional()});

export const conversationTag = z.object({tagName: z.string().optional(), source: z.enum(["human", "chatbot", "ai"]).optional(), additionDate: z.string().optional(), creatorUserId: z.string().optional()});

export const conversation = z.object({id: z.string().optional(), channelId: z.string().optional(), companyId: z.string().optional(), contactId: z.string().optional(), channel: channel.optional(), status: z.enum(["ACTIVE", "CLOSED", "AWAY", "INACTIVE", "FINALIZED"]).optional(), lastMessage: z.string().optional(), lastMessageAt: z.string().optional(), visitorName: z.string().optional(), visitorEmail: z.string().optional(), visitorPhone: z.string().optional(), participants: z.array(participant).optional(), assignedTo: z.string().optional(), preAssigned: z.string().optional(), persistentLastOperator: z.string().optional(), firstInterventionAt: z.string().nullable().optional(), utmSource: z.string().optional(), utmMedium: z.string().optional(), utmCampaign: z.string().optional(), gaClientId: z.string().optional(), phaseId: z.string().optional(), amount: z.number().optional(), type: z.string().optional(), operatorTags: z.array(conversationTag).optional(), tags: z.array(z.string()).optional(), closed: z.boolean().optional(), createdAt: z.string().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
};

/**
 * Crear conversación
 * 
 * POST /v1/conversations
 */
export const createApiV1Conversations = async (args: CreateApiV1ConversationsArgs, options?: CreateApiV1ConversationsOptions) => {
const {baseUrl = "https://connect.cliengo.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/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(conversation, await res.json())
};