import {z} from 'zod'

export type ResourcePolicyKind = 'ResourcePolicy';

export type MapLabelKeyString = {[key: string]: string};

export type ResourcePolicyMetadata = {name: string, labels?: MapLabelKeyString | undefined};

export type PolicyKind = 'ApplicationGroup' | 'ApplicationInstancePermission' | 'Connector' | 'Subject' | 'Topic';

export type CelRule = {condition: string, errorMessage: string};

export type ResourcePolicySpec = {targetKind: PolicyKind, description?: string | undefined, rules?: Array<CelRule> | undefined};

export type ResourcePolicyResourceV1 = {apiVersion: string, kind: ResourcePolicyKind, metadata: ResourcePolicyMetadata, spec: ResourcePolicySpec};

export type UpdateApiPublicSelfServeV1ResourcePolicyArgs = {dryMode?: boolean | undefined, body: ResourcePolicyResourceV1};

export type UpdateApiPublicSelfServeV1ResourcePolicyOptions = {baseUrl: string, httpAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const resourcePolicyKind = z.literal("ResourcePolicy");

export const mapLabelKeyString = z.record(z.string(), z.string());

export const resourcePolicyMetadata = z.object({name: z.string(), labels: mapLabelKeyString.optional()});

export const policyKind = z.enum(["ApplicationGroup", "ApplicationInstancePermission", "Connector", "Subject", "Topic"]);

export const celRule = z.object({condition: z.string(), errorMessage: z.string()});

export const resourcePolicySpec = z.object({targetKind: policyKind, description: z.string().optional(), rules: z.array(celRule).optional()});

export const resourcePolicyResourceV1 = z.object({apiVersion: z.string(), kind: resourcePolicyKind, metadata: resourcePolicyMetadata, spec: resourcePolicySpec});

export const upsertResult = z.enum(["Created", "Updated", "NotChanged"]);

export const resourcePolicyApplyResultV1 = z.object({resource: resourcePolicyResourceV1, upsertResult: upsertResult});

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
};

/**
 * Create or update a ResourcePolicy
 * 
 * PUT /public/self-serve/v1/resource-policy
 */
export const updateApiPublicSelfServeV1ResourcePolicy = async (args: UpdateApiPublicSelfServeV1ResourcePolicyArgs, options: UpdateApiPublicSelfServeV1ResourcePolicyOptions) => {
const {baseUrl, fetch: fetchFn = fetch, httpAuth} = options ?? {}

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

if (args.dryMode != null) query.append("dryMode", String(args.dryMode))
if (httpAuth !== undefined) headers.set('authorization', `Bearer ${httpAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/public/self-serve/v1/resource-policy${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "PUT", 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(resourcePolicyApplyResultV1, await res.json())
};