/**
 * The virtual relays the container serves, and the only place their names are written down.
 *
 * zooid binds a config to a Host header and serves any number of them from one process, so a second
 * space costs a toml in docker/config and nothing else. The names are a union rather than a string
 * so that a scenario naming a relay that has no config fails to compile instead of hanging on a 404
 * from the dispatcher.
 *
 * Each host resolves nowhere, and `.test` is reserved by rfc 2606, so a url that escapes this
 * process fails to connect rather than reaching a host. transport.ts covers why the container is
 * told to call itself this rather than its loopback address.
 */
export const tenants = {
  space: "space.test",
  other: "other.test",
  // Policy space.toml cannot express at the same time. `closed` refuses a join without an invite,
  // `unsigned` serves events with their signatures stripped.
  closed: "closed.test",
  unsigned: "unsigned.test",
} as const

export type TenantName = keyof typeof tenants

export const tenantUrl = (name: TenantName) => `wss://${tenants[name]}/`

export const tenantNames = Object.keys(tenants) as TenantName[]

// Which tenant a url belongs to, for the transport's Host header.
export const tenantByUrl = new Map(tenantNames.map(name => [tenantUrl(name), tenants[name]]))