import {z} from 'zod'

export type GetApiReposOwnerRepoGitTreesShaArgs = {owner: string, repo: string, sha: string, recursive?: boolean | undefined, page?: number | undefined, per_page?: number | undefined};

export type GetApiReposOwnerRepoGitTreesShaOptions = {baseUrl: string, BasicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const gitEntry = z.object({mode: z.string().optional(), path: z.string().optional(), sha: z.string().optional(), size: z.number().int().optional(), type: z.string().optional(), url: z.string().optional()});

export const gitTreeResponse = z.object({page: z.number().int().optional(), sha: z.string().optional(), total_count: z.number().int().optional(), tree: z.array(gitEntry).optional(), truncated: z.boolean().optional(), url: z.string().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
};

/**
 * Gets the tree of a repository.
 * 
 * GET /repos/{owner}/{repo}/git/trees/{sha}
 * 
 * Also accepts auth: Token, AccessToken, AuthorizationHeaderToken, SudoParam, SudoHeader, TOTPHeader
 */
export const getApiReposOwnerRepoGitTreesSha = async (args: GetApiReposOwnerRepoGitTreesShaArgs, options: GetApiReposOwnerRepoGitTreesShaOptions) => {
const {baseUrl, fetch: fetchFn = fetch, BasicAuth} = options ?? {}

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

if (args.recursive != null) query.append("recursive", String(args.recursive))
if (args.page != null) query.append("page", String(args.page))
if (args.per_page != null) query.append("per_page", String(args.per_page))
if (BasicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${BasicAuth.username}:${BasicAuth.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/repos/${encodeURIComponent(String(args.owner))}/${encodeURIComponent(String(args.repo))}/git/trees/${encodeURIComponent(String(args.sha))}${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(gitTreeResponse, await res.json())
};