import {z} from 'zod'

export type CreateTimeOffV2Dto = {techId: string, startDate: string, endDate: string, status?: ('approved' | 'pending' | 'declined') | undefined, reason?: ('Vacation' | 'Sick day' | 'Personal' | 'Company Added' | 'Other') | undefined, details?: string | undefined, isAllDay?: boolean | undefined};

export type CreateApiV2TimeoffArgs = {Authorization: string, body: CreateTimeOffV2Dto};

export type CreateApiV2TimeoffOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const responseTimeOffV2Dto = z.object({id: z.string().optional(), techId: z.string().optional(), startDate: z.string().optional(), endDate: z.string().optional(), status: z.enum(["approved", "pending", "declined"]).optional(), reason: z.enum(["Vacation", "Sick day", "Personal", "Company Added", "Other"]).optional(), details: z.string().optional(), isAllDay: z.boolean().optional(), updatedAt: z.string().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
};

/**
 * Create a new Time Off
 * 
 * POST /v2/timeoff
 */
export const createApiV2Timeoff = async (args: CreateApiV2TimeoffArgs, options?: CreateApiV2TimeoffOptions) => {
const {baseUrl = "https://api.workiz.com/crm/api", fetch: fetchFn = fetch} = options ?? {}

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

if (args.Authorization != null) headers.set("Authorization", String(args.Authorization))

const url = `${baseUrl.replace(/\/+$/, '')}/v2/timeoff${query.size > 0 ? `?${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(responseTimeOffV2Dto, await res.json())
};