import {z} from 'zod'

export type GetApiV1ItemsItemIdFlagsArgs = {itemId: number, Account: unknown};

export type GetApiV1ItemsItemIdFlagsOptions = {baseUrl: string, OAuth2?: string | undefined, fetch?: typeof fetch | undefined};

export const flagSeverity = z.union([z.literal(0), z.literal(1), z.literal(2)]);

export const itemFlagResponse = z.object({id: z.number().int().optional(), flagTypeId: z.number().int().optional(), name: z.string().nullable().optional(), color: z.string().nullable().optional(), severity: flagSeverity.optional(), accountId: z.number().int().nullable().optional(), raisedByUserId: z.number().int().optional(), raisedAt: z.string().optional()});

export const getApiV1ItemsItemIdFlagsResponse = z.array(itemFlagResponse);

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 the active flags raised on an item. Cleared flags excluded.
 * Visibility-filtered: tenant-primary callers see all rows; others see global
 * flags plus those scoped to their own account. Returns an empty list if the
 * `UNIQUE_ITEMS` feature is not enabled.
 * 
 * GET /v1/Items/{itemId}/flags
 */
export const getApiV1ItemsItemIdFlags = async (args: GetApiV1ItemsItemIdFlagsArgs, options: GetApiV1ItemsItemIdFlagsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, OAuth2} = options ?? {}

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

if (args.Account != null) query.append("Account", String(args.Account))
if (OAuth2 !== undefined) headers.set('authorization', `Bearer ${OAuth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/Items/${encodeURIComponent(String(args.itemId))}/flags${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(getApiV1ItemsItemIdFlagsResponse, await res.json())
};