import {z} from 'zod'

export type TemplateQueryPaperworkType = 'W4' | 'I9' | 'W9' | 'CustomPaperwork';

export type WorkerType = 'Employee' | 'Contractor' | 'All';

export type JurisdictionFilter = {type?: ('all' | 'exclude' | 'include') | undefined, jurisdictions?: Array<string> | undefined};

export type JurisdictionType = 'WorkLocation' | 'Residency' | 'All';

export type GetPaperworkTemplatesRequest = {paperwork_type?: TemplateQueryPaperworkType | undefined, worker_type?: WorkerType | undefined, jurisdictions?: JurisdictionFilter | undefined, jurisdiction_type?: JurisdictionType | undefined, effective_date?: string | undefined, archive_date?: string | undefined, companyID: string};

export type CreateApiPaperworkTemplatesArgs = {body: GetPaperworkTemplatesRequest};

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

export const paperworkType = z.enum(["W4", "I9", "W9", "CustomPaperwork"]);

export const workerType = z.enum(["Employee", "Contractor", "All"]);

export const jurisdictionFilter = z.object({type: z.enum(["all", "exclude", "include"]).optional(), jurisdictions: z.array(z.string()).optional()});

export const jurisdictionType = z.enum(["WorkLocation", "Residency", "All"]);

export const formField = z.object({field_name: z.string().optional(), label: z.string().optional(), error_text: z.string().optional(), type: z.string().optional(), zeal_autofill: z.boolean().optional(), required: z.boolean().optional(), options: z.array(z.object({label: z.string().optional(), value: z.string().optional()})).optional(), constraint: z.object({min: z.number().optional(), max: z.number().optional()}).optional(), description: z.string().optional(), x: z.number().int().optional(), y: z.number().int().optional(), width: z.number().int().optional(), height: z.number().int().optional()});

export const templateStatus = z.enum(["Draft", "Live", "Archived"]);

export const template = z.object({templateID: z.string().optional(), companyID: z.string().optional(), form_name: z.string().optional(), description: z.string().optional(), paperwork_type: paperworkType.optional(), worker_type: workerType.optional(), jurisdictions_filter: jurisdictionFilter.optional(), jurisdiction_type: jurisdictionType.optional(), effective_date: z.string().optional(), archive_date: z.string().optional(), form_fields: z.array(formField).optional(), urls: z.array(z.string()).optional(), status: templateStatus.optional()});

export const getPaperworkTemplatesResponse = z.object({templates: z.array(template).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
};

/**
 * Get Paperwork Templates
 * 
 * POST /paperwork/templates
 */
export const createApiPaperworkTemplates = async (args: CreateApiPaperworkTemplatesArgs, options?: CreateApiPaperworkTemplatesOptions) => {
const {baseUrl = "https://api.zeal.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 = `${baseUrl.replace(/\/+$/, '')}/paperwork/templates${query.size > 0 ? `?${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(getPaperworkTemplatesResponse, await res.json())
};