import {z} from 'zod'

export type GetApiDirectivesTreeArgs = {includeSystem?: boolean | undefined, body: {includeSystem?: boolean | undefined}};

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

export const directive = z.object({id: z.string().optional(), displayName: z.string().optional(), shortDescription: z.string().optional(), longDescription: z.string().optional(), techniqueName: z.string().optional(), techniqueVersion: z.string().optional(), priority: z.number().int().gte(0).lte(10).optional(), enabled: z.boolean().optional(), system: z.boolean().optional(), policyMode: z.enum(["enforce", "audit"]).optional(), tags: z.array(z.record(z.string(), z.unknown())).optional(), parameters: z.object({}).optional()});

export const directiveTree = z.object({name: z.string().optional(), description: z.string().optional(), subCategories: z.array(z.object({name: z.string().optional(), description: z.string().optional(), subCategories: z.array(z.unknown()).optional(), techniques: z.array(z.unknown()).optional()})).optional(), techniques: z.array(z.object({name: z.string().optional(), directives: z.array(directive).optional()})).optional()});

export const getApiDirectivesTreeResponse = z.object({result: z.enum(["success", "error"]), action: z.literal("directivesTree"), data: z.object({directives: z.array(directiveTree)})});

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 directive tree
 * 
 * GET /directives/tree
 */
export const getApiDirectivesTree = async (args: GetApiDirectivesTreeArgs, options?: GetApiDirectivesTreeOptions) => {
const {baseUrl = "https://rudder.example.com/rudder/api/latest", fetch: fetchFn = fetch, APITokens} = options ?? {}

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

if (args.includeSystem != null) query.append("includeSystem", String(args.includeSystem))
if (APITokens !== undefined) headers.set("X-API-Token", APITokens)

const url = `${baseUrl.replace(/\/+$/, '')}/directives/tree${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", 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(getApiDirectivesTreeResponse, await res.json())
};