import {z} from 'zod'

export type GetApiServerNameArgs = {'X-Auth-Token': string, name: string};

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

export const groupRoleMapping = z.object({group: z.string(), global_role: z.string(), role_domains: z.object({role: z.string().optional(), domains: z.array(z.string()).optional()}).optional()});

export const rESTServerLDAP = z.object({directory: z.string(), hostname: z.string(), port: z.number().int(), ssl: z.boolean(), base_dn: z.string(), bind_dn: z.string(), bind_password: z.string().optional(), group_member_attr: z.string(), username_attr: z.string(), enable: z.boolean(), default_role: z.string(), role_groups: z.object({role: z.string().optional(), groups: z.array(z.string()).optional()}).optional(), group_mapped_roles: z.array(groupRoleMapping).optional()});

export const rESTServerSAML = z.object({sso_url: z.string(), issuer: z.string(), x509_cert: z.string().optional(), group_claim: z.string(), enable: z.boolean(), default_role: z.string(), role_groups: z.object({role: z.string().optional(), groups: z.array(z.string()).optional()}).optional(), group_mapped_roles: z.array(groupRoleMapping).optional()});

export const rESTServerOIDC = z.object({issuer: z.string(), authorization_endpoint: z.string(), token_endpoint: z.string(), user_info_endpoint: z.string(), client_id: z.string(), ClientSecret: z.string().optional(), group_claim: z.string(), scopes: z.array(z.string()), enable: z.boolean(), default_role: z.string(), role_groups: z.object({role: z.string().optional(), groups: z.array(z.string()).optional()}).optional(), group_mapped_roles: z.array(groupRoleMapping).optional()});

export const rESTServer = z.object({server_name: z.string(), server_type: z.string(), ldap: rESTServerLDAP.optional(), saml: rESTServerSAML.optional(), oidc: rESTServerOIDC.optional()});

export const rESTServerData = z.object({server: rESTServer});

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
};

/**
 * Show server
 * 
 * GET /server/{name}
 */
export const getApiServerName = async (args: GetApiServerNameArgs, options: GetApiServerNameOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args['X-Auth-Token'] != null) headers.set("X-Auth-Token", String(args['X-Auth-Token']))

const url = `${baseUrl.replace(/\/+$/, '')}/server/${encodeURIComponent(String(args.name))}${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(rESTServerData, await res.json())
};