import {z} from 'zod'

export type GetApiV1TimeoffsArgs = {page?: number | undefined, pageSize?: number | undefined, employeeId?: string | undefined, status?: (Array<'DRAFT' | 'APPROVAL_IN_PROGRESS' | 'APPROVED' | 'REJECTED' | 'TAKEN' | 'DELETED' | 'REVOKED'>) | undefined, startDateFrom?: string | undefined, startDateTo?: string | undefined, typeId?: Array<string> | undefined, sortBy?: ('startDate' | 'createdOn' | 'updatedOn' | 'noOfDays') | undefined, sortOrder?: ('ASC' | 'DESC') | undefined};

export type GetApiV1TimeoffsOptions = {baseUrl?: string | undefined, BearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const timeOffDate = z.object({date: z.string().optional(), session: z.enum(["MORNING", "AFTERNOON", "FULL_DAY"]).optional()});

export const timeOffTypeInfo = z.object({typeId: z.string().optional(), key: z.string().optional()});

export const timeOffItem = z.object({timeOffId: z.string().optional(), status: z.enum(["DRAFT", "APPROVAL_IN_PROGRESS", "APPROVED", "REJECTED", "TAKEN", "DELETED", "REVOKED"]).optional(), startDate: timeOffDate.optional(), endDate: timeOffDate.optional(), noOfDays: z.number().optional(), description: z.string().optional(), type: timeOffTypeInfo.optional(), createdOn: z.string().optional(), updatedOn: z.string().optional()});

export const pagination = z.object({page: z.number().int(), pageSize: z.number().int(), totalCount: z.number().int(), totalPages: z.number().int()});

export const v1TimeoffsGetResponse = z.object({timeOffs: z.array(timeOffItem), page: pagination, allCount: z.number().int().optional(), pendingCount: z.number().int().optional(), approvedCount: z.number().int().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
};

/**
 * List time off requests
 * 
 * GET /v1/timeoffs
 */
export const getApiV1Timeoffs = async (args: GetApiV1TimeoffsArgs, options?: GetApiV1TimeoffsOptions) => {
const {baseUrl = "https://api.usemultiplier.com", fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (args.page != null) query.append("page", String(args.page))
if (args.pageSize != null) query.append("pageSize", String(args.pageSize))
if (args.employeeId != null) query.append("employeeId", String(args.employeeId))
for (const item of args.status ?? []) query.append("status", String(item))
if (args.startDateFrom != null) query.append("startDateFrom", String(args.startDateFrom))
if (args.startDateTo != null) query.append("startDateTo", String(args.startDateTo))
for (const item of args.typeId ?? []) query.append("typeId", String(item))
if (args.sortBy != null) query.append("sortBy", String(args.sortBy))
if (args.sortOrder != null) query.append("sortOrder", String(args.sortOrder))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/timeoffs${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

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

return validateResponse(v1TimeoffsGetResponse, await res.json())
};