import {z} from 'zod'

export type GetApiApiV2InstancesArgs = {tag?: Array<string> | undefined, organizationID?: Array<string> | undefined, projectID?: Array<string> | undefined, regionID?: Array<string> | undefined, networkID?: Array<string> | undefined};

export type GetApiApiV2InstancesOptions = {baseUrl: string, oauth2Authentication?: string | undefined, fetch?: typeof fetch | undefined};

export const kubernetesLabelValue = z.string();

export const tag = z.object({name: z.string(), value: z.string()});

export const tagList = z.array(tag);

export const resourceProvisioningStatus = z.enum(["unknown", "provisioning", "provisioned", "deprovisioning", "error"]);

export const resourceHealthStatus = z.enum(["unknown", "healthy", "degraded", "error"]);

export const projectScopedResourceReadMetadata = z.object({name: kubernetesLabelValue, description: z.string().optional(), tags: tagList.optional(), id: z.string(), creationTime: z.string(), createdBy: z.string().optional(), modifiedTime: z.string().optional(), modifiedBy: z.string().optional(), deletionTime: z.string().optional(), provisioningStatus: resourceProvisioningStatus, healthStatus: resourceHealthStatus, organizationId: z.string(), projectId: z.string()});

export const securityGroupIDList = z.array(z.string());

export const allowedSourceAddresses = z.array(z.string());

export const instanceNetworking = z.object({securityGroups: securityGroupIDList.optional(), publicIP: z.boolean().optional(), allowedSourceAddresses: allowedSourceAddresses.optional()});

export const instanceSpec = z.object({flavorId: z.string(), imageId: z.string(), networking: instanceNetworking.optional(), userData: z.string().optional()});

export const instanceLifecyclePhase = z.enum(["Pending", "Queued", "Building", "Running", "Stopping", "Stopped"]);

export const instanceStatus = z.object({regionId: z.string(), networkId: z.string(), powerState: instanceLifecyclePhase.optional(), privateIP: z.string().optional(), publicIP: z.string().optional()});

export const instanceRead = z.object({metadata: projectScopedResourceReadMetadata, spec: instanceSpec, status: instanceStatus});

export const instancesRead = z.array(instanceRead);

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
};

/**
 * List instances
 * 
 * GET /api/v2/instances
 */
export const getApiApiV2Instances = async (args: GetApiApiV2InstancesArgs, options: GetApiApiV2InstancesOptions) => {
const {baseUrl, fetch: fetchFn = fetch, oauth2Authentication} = options ?? {}

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

for (const item of args.tag ?? []) query.append("tag", String(item))
for (const item of args.organizationID ?? []) query.append("organizationID", String(item))
for (const item of args.projectID ?? []) query.append("projectID", String(item))
for (const item of args.regionID ?? []) query.append("regionID", String(item))
for (const item of args.networkID ?? []) query.append("networkID", String(item))
if (oauth2Authentication !== undefined) headers.set('authorization', `Bearer ${oauth2Authentication}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/instances${query.size > 0 ? `?${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(instancesRead, await res.json())
};