import {z} from 'zod'

export type WafRulePatch = {id?: string | undefined, enabled?: boolean | undefined, action?: ('allow' | 'block' | 'deny' | 'drop' | 'pass' | 'pause' | 'proxy' | 'redirect') | undefined, message?: string | undefined, tags?: Array<string> | undefined, notify_level?: ('none' | 'info' | 'warning' | 'severe') | undefined};

export type WafRulesPatch = Array<WafRulePatch>;

export type PatchApiApplicationsIdWafRulesArgs = {id: string, body: WafRulesPatch};

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

export const wafRule = z.object({id: z.string().optional(), enabled: z.boolean().optional(), action: z.enum(["allow", "block", "deny", "drop", "pass", "pause", "proxy", "redirect"]).optional(), message: z.string().optional(), tags: z.array(z.string()).optional(), notify_level: z.enum(["none", "info", "warning", "severe"]).optional()});

export const wafRules = z.array(wafRule);

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
};

/**
 * Update the WAF rules for an application.
 * 
 * PATCH /applications/{id}/waf-rules
 */
export const patchApiApplicationsIdWafRules = async (args: PatchApiApplicationsIdWafRulesArgs, options?: PatchApiApplicationsIdWafRulesOptions) => {
const {baseUrl = "https://api.webscale.com/v2", fetch: fetchFn = fetch} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('content-type', "application/json-patch+json")
headers.set('accept', "application/json")

const url = `${baseUrl.replace(/\/+$/, '')}/applications/${encodeURIComponent(String(args.id))}/waf-rules${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "PATCH", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(wafRules, await res.json())
};