import {z} from 'zod'

export type GetApiApiV1ProjectsProjectUuidGitBranchesBranchFilesArgs = {projectUuid: string, branch: string, path?: string | undefined};

export type GetApiApiV1ProjectsProjectUuidGitBranchesBranchFilesOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const gitFileEntry = z.object({sha: z.string(), size: z.number(), type: z.enum(["file", "dir"]), path: z.string(), name: z.string()});

export const gitFileOrDirectory = z.union([z.object({entries: z.array(gitFileEntry), type: z.literal("directory")}), z.object({path: z.string(), sha: z.string(), content: z.string(), type: z.literal("file")})]);

export const apiGitFileOrDirectoryResponse = z.object({results: gitFileOrDirectory, status: z.literal("ok")});

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 file or directory
 * 
 * GET /api/v1/projects/{projectUuid}/git/branches/{branch}/files
 */
export const getApiApiV1ProjectsProjectUuidGitBranchesBranchFiles = async (args: GetApiApiV1ProjectsProjectUuidGitBranchesBranchFilesArgs, options: GetApiApiV1ProjectsProjectUuidGitBranchesBranchFilesOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/projects/${encodeURIComponent(String(args.projectUuid))}/git/branches/${encodeURIComponent(String(args.branch))}/files${query.size > 0 ? `?${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(apiGitFileOrDirectoryResponse, await res.json())
};