import {z} from 'zod'

export type GetApiLabelsArgs = {name?: string | undefined};

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

export const labelColor = z.object({name: z.enum(["red", "coral", "orange", "amber", "yellow", "lime", "green", "teal", "blue", "iris", "purple", "pink"]), type: z.literal("palette")});

export const labelID = z.string();

export const labelResourcesCount = z.object({dashboards: z.number().int(), datasets: z.number().int(), monitors: z.number().int(), notifiers: z.number().int(), total: z.number().int()});

export const labelSummary = z.object({color: labelColor, description: z.string().nullable().optional(), id: labelID, name: z.string(), resources_count: labelResourcesCount});

export const getApiLabelsResponse = z.array(labelSummary);

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 labels
 * 
 * GET /labels
 */
export const getApiLabels = async (args: GetApiLabelsArgs, options?: GetApiLabelsOptions) => {
const {baseUrl = "https://api.axiom.co/v2", fetch: fetchFn = fetch, Auth} = options ?? {}

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

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

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