import {z} from 'zod'

export type FieldSettings = {mandatory: boolean, display: 'STANDALONE' | 'FREE_TAG'};

export type FieldSettingsMap = {EXPENSES?: FieldSettings | undefined, REVENUE?: FieldSettings | undefined};

export type UpdateFieldRequest = {name: string, settings?: FieldSettingsMap | undefined};

export type UpdateApiFieldsIdArgs = {body: UpdateFieldRequest};

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

export const fieldValue = z.object({id: z.string(), name: z.string(), deactivated: z.boolean()});

export const fieldSettings = z.object({mandatory: z.boolean(), display: z.enum(["STANDALONE", "FREE_TAG"])});

export const fieldSettingsMap = z.object({EXPENSES: fieldSettings.optional(), REVENUE: fieldSettings.optional()});

export const field = z.object({id: z.string(), name: z.string(), values: z.array(fieldValue), settings: fieldSettingsMap.optional(), updated_at: z.string()});

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
};

/**
 * Updates a field
 * 
 * PUT /fields/{id}
 */
export const updateApiFieldsId = async (args: UpdateApiFieldsIdArgs, options?: UpdateApiFieldsIdOptions) => {
const {baseUrl = "https://api.rillet.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 = `${baseUrl.replace(/\/+$/, '')}/fields/${encodeURIComponent(String(args.id))}${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "PUT", 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(field, await res.json())
};