import {z} from 'zod'

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

export const productLicenseMetrics = z.object({instances: z.object({api: z.number().int().optional(), worker: z.number().int().optional(), dispatcher: z.number().int().optional()}).optional(), users: z.number().int().optional(), channels: z.number().int().optional(), mirrors: z.number().int().optional()});

export const productLicenseComplianceGroup = z.array(z.enum(["users", "channels", "instances.api", "instances.dispatcher", "instances.worker"]));

export const productLicenseCompliance = z.object({ok: productLicenseComplianceGroup.optional(), warn_limit: productLicenseComplianceGroup.optional(), over_quota: productLicenseComplianceGroup.optional(), no_data: productLicenseComplianceGroup.optional()});

export const productLicense = z.object({id: z.string().optional(), status: z.enum(["active", "expired", "empty", "revoked"]).optional(), compliance_status: z.enum(["good", "warning", "blocked"]).optional(), license_type: z.enum(["restricted", "permissive"]).optional(), issued_at: z.string().optional(), expires_at: z.string().optional(), plan: z.object({limits: productLicenseMetrics.optional(), features: z.object({cve: z.object({enabled: z.boolean().optional(), settings: z.object({}).optional()}).optional()}).optional(), extra: z.object({plan_name: z.string().optional(), company_name: z.string().optional()}).optional()}).optional(), metrics: productLicenseMetrics.optional(), compliance: productLicenseCompliance.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
};

/**
 * Get current license information
 * 
 * GET /system/license
 * 
 * Also accepts auth: user_token
 */
export const getApiSystemLicense = async (options?: GetApiSystemLicenseOptions) => {
const {baseUrl = "https://api.anaconda.cloud/api", fetch: fetchFn = fetch, jwt} = options ?? {}

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

if (jwt !== undefined) headers.set('authorization', `Bearer ${jwt}`)

const url = `${baseUrl.replace(/\/+$/, '')}/system/license${query.size > 0 ? `?${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(productLicense, await res.json())
};