import {z} from 'zod'

export type CreateApi30SegmentsArgs = {body: {definition: {conditions: Array<Record<string, never>>, contacts?: ({email?: ({marketing?: (Array<{consent?: ('unknown' | 'confirmed' | 'denied') | undefined, reason?: 'deliverability' | undefined, sendable: boolean}>) | undefined, transactional?: Array<{sendable: boolean}> | undefined}) | undefined, sms?: ({marketing?: (Array<{consent?: ('unknown' | 'confirmed' | 'denied') | undefined, reason?: 'deliverability' | undefined, sendable: boolean}>) | undefined, transactional?: Array<{sendable: boolean}> | undefined}) | undefined, whatsapp?: ({marketing?: (Array<{consent?: ('unknown' | 'confirmed' | 'denied') | undefined, reason?: 'deliverability' | undefined, sendable: boolean}>) | undefined, transactional?: Array<{sendable: boolean}> | undefined}) | undefined}) | undefined, extra: unknown, field?: string | undefined, filters?: Array<Record<string, never>> | undefined, location?: ({city?: string | undefined, country_code?: string | undefined, lat?: number | undefined, lng?: number | undefined, region?: string | undefined}) | undefined, match: 'all' | 'any', op?: string | undefined, schema_version?: number | undefined, value: unknown, value_op?: ('and' | 'or') | undefined}, list_id: string, name: string}};

export type CreateApi30SegmentsOptions = {baseUrl?: string | undefined, bearerToken?: string | undefined, fetch?: typeof fetch | undefined};

export const createApi30SegmentsResponse = z.object({created_at: z.string().optional(), definition: z.record(z.string(), z.unknown()).optional(), id: z.string().optional(), list_id: z.string().optional(), read_only: z.boolean().optional(), name: 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
};

/**
 * Add Segment
 * 
 * POST /3.0/segments
 * 
 * Also accepts auth: oauth2
 */
export const createApi30Segments = async (args: CreateApi30SegmentsArgs, options?: CreateApi30SegmentsOptions) => {
const {baseUrl = "https://api.mailchimp.com", fetch: fetchFn = fetch, bearerToken} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/3.0/segments${query.size > 0 ? `?${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(createApi30SegmentsResponse, await res.json())
};