import {z} from 'zod'

export type Kind = {apiGroups?: Array<string> | undefined, kinds?: Array<string> | undefined};

export type LabelSelectorOperator = string;

export type LabelSelectorRequirement = {key?: string | undefined, operator?: LabelSelectorOperator | undefined, values?: Array<string> | undefined};

export type LabelSelector = {matchExpressions?: Array<LabelSelectorRequirement> | undefined, matchLabels?: {[key: string]: string} | undefined};

export type Match = {excludedNamespaces?: Array<string> | undefined, kinds?: Array<Kind> | undefined, labelSelector?: LabelSelector | undefined, namespaceSelector?: LabelSelector | undefined, namespaces?: Array<string> | undefined, scope?: string | undefined};

export type Parameters = {[key: string]: Record<string, never>};

export type ConstraintSelector = {labelSelector?: LabelSelector | undefined, providers?: Array<string> | undefined};

export type ConstraintSpec = {constraintType?: string | undefined, disabled?: boolean | undefined, match?: Match | undefined, parameters?: Parameters | undefined, selector?: ConstraintSelector | undefined};

export type ConstraintBody = {Spec?: ConstraintSpec | undefined, name?: string | undefined};

export type CreateApiApiV2ConstraintsArgs = {body: ConstraintBody};

export type CreateApiApiV2ConstraintsOptions = {baseUrl: string, apiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const kind = z.object({apiGroups: z.array(z.string()).optional(), kinds: z.array(z.string()).optional()});

export const labelSelectorOperator = z.string();

export const labelSelectorRequirement = z.object({key: z.string().optional(), operator: labelSelectorOperator.optional(), values: z.array(z.string()).optional()});

export const labelSelector = z.object({matchExpressions: z.array(labelSelectorRequirement).optional(), matchLabels: z.record(z.string(), z.string()).optional()});

export const match = z.object({excludedNamespaces: z.array(z.string()).optional(), kinds: z.array(kind).optional(), labelSelector: labelSelector.optional(), namespaceSelector: labelSelector.optional(), namespaces: z.array(z.string()).optional(), scope: z.string().optional()});

export const parameters = z.record(z.string(), z.object({}));

export const constraintSelector = z.object({labelSelector: labelSelector.optional(), providers: z.array(z.string()).optional()});

export const constraintSpec = z.object({constraintType: z.string().optional(), disabled: z.boolean().optional(), match: match.optional(), parameters: parameters.optional(), selector: constraintSelector.optional()});

export const violation = z.object({enforcementAction: z.string().optional(), kind: z.string().optional(), message: z.string().optional(), name: z.string().optional(), namespace: z.string().optional()});

export const constraintStatus = z.object({auditTimestamp: z.string().optional(), enforcement: z.string().optional(), synced: z.boolean().optional(), violations: z.array(violation).optional()});

export const constraint = z.object({labels: z.record(z.string(), z.string()).optional(), name: z.string().optional(), spec: constraintSpec.optional(), status: constraintStatus.optional()});

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
};

/**
 * Creates default constraint
 * 
 * POST /api/v2/constraints
 */
export const createApiApiV2Constraints = async (args: CreateApiApiV2ConstraintsArgs, options: CreateApiApiV2ConstraintsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (apiKey !== undefined) headers.set("Authorization", apiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/constraints${query.size > 0 ? `?${query}` : ''}`

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