import {z} from 'zod'

export type CreateApiApiV2EmailCampaignsScheduleArgs = {body: {emailSenderId: number, subject: string, message: string, fromName?: (string | null) | undefined, replyToEmail?: (string | null) | undefined, recipients: {contactIds: Array<number>, emails: Array<string>, groupIds: Array<number>}, scheduleParams: {startDateTime: string, timezone: string, rrule?: (string | null) | undefined}}};

export type CreateApiApiV2EmailCampaignsScheduleOptions = {baseUrl?: string | undefined, BasicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const userPersonalInfo = z.object({id: z.number().int(), firstName: z.string().nullable().optional(), lastName: z.string().nullable().optional(), avatarUrl: z.string().nullable().optional(), email: z.string().nullable().optional()});

export const scheduledEmailCampaignDetails = z.object({id: z.number().int(), status: z.enum(["scheduled", "active", "paused", "completed", "cancelled", "failed"]), emailSenderId: z.number().int().nullable().optional(), startAt: z.string(), endAt: z.string().nullable().optional(), nextSendAt: z.string().nullable().optional(), createdBy: userPersonalInfo, createdAt: z.string(), updatedAt: z.string(), type: z.enum(["once", "hourly", "daily", "weekly", "monthly", "yearly", "follow-up"]), fromName: z.string().nullable().optional(), fromEmail: z.string(), replyToEmail: z.string(), subject: z.string(), html: z.string(), recipientsCount: z.number().int(), sendingTimezone: z.string(), rrule: z.string().nullable().optional(), occurrenceSummary: z.string().nullable().optional()});

export const scheduleEmailCampaignResponse = z.object({campaign: scheduledEmailCampaignDetails, cost: z.number()});

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
};

/**
 * Schedule new email campaign
 * 
 * POST /api/v2/email-campaigns/schedule
 */
export const createApiApiV2EmailCampaignsSchedule = async (args: CreateApiApiV2EmailCampaignsScheduleArgs, options?: CreateApiApiV2EmailCampaignsScheduleOptions) => {
const {baseUrl = "https://rest.textmagic.com", fetch: fetchFn = fetch, BasicAuth} = options ?? {}

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

if (BasicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${BasicAuth.username}:${BasicAuth.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/email-campaigns/schedule${query.size > 0 ? `?${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(scheduleEmailCampaignResponse, await res.json())
};