import {z} from 'zod'

export type GetApiReposOwnerRepoMilestonesMilestoneNumberLabelsArgs = {owner: string, repo: string, milestone_number: number, per_page?: number | undefined, page?: number | undefined};

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

export const simpleUser = z.object({name: z.string().nullable().optional(), email: z.string().nullable().optional(), login: z.string(), id: z.number().int(), node_id: z.string(), avatar_url: z.string(), gravatar_id: z.string().nullable(), url: z.string(), html_url: z.string(), followers_url: z.string(), following_url: z.string(), gists_url: z.string(), starred_url: z.string(), subscriptions_url: z.string(), organizations_url: z.string(), repos_url: z.string(), events_url: z.string(), received_events_url: z.string(), type: z.string(), site_admin: z.boolean(), starred_at: z.string().optional(), user_view_type: z.string().optional()});

export const label = z.object({id: z.number().int(), node_id: z.string(), url: z.string(), name: z.string(), description: z.string().nullable(), color: z.string(), default: z.boolean(), archived_at: z.string().nullable(), archived_by: simpleUser.nullable()});

export const getApiReposOwnerRepoMilestonesMilestoneNumberLabelsResponse = z.array(label);

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 for issues in a milestone
 * 
 * GET /repos/{owner}/{repo}/milestones/{milestone_number}/labels
 */
export const getApiReposOwnerRepoMilestonesMilestoneNumberLabels = async (args: GetApiReposOwnerRepoMilestonesMilestoneNumberLabelsArgs, options?: GetApiReposOwnerRepoMilestonesMilestoneNumberLabelsOptions) => {
const {baseUrl = "https://api.github.com", fetch: fetchFn = fetch} = options ?? {}

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

if (args.per_page != null) query.append("per_page", String(args.per_page))
if (args.page != null) query.append("page", String(args.page))

const url = `${baseUrl.replace(/\/+$/, '')}/repos/${encodeURIComponent(String(args.owner))}/${encodeURIComponent(String(args.repo))}/milestones/${encodeURIComponent(String(args.milestone_number))}/labels${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(getApiReposOwnerRepoMilestonesMilestoneNumberLabelsResponse, await res.json())
};