import z from "zod"

import type { ZodType } from "zod"

import { Log } from "../util/log"

export namespace BusEvent {

const log = Log.create({ service: "event" })

export type Definition = ReturnType<typeof define>

const registry = new Map<string, Definition>()

export function define<Type extends string, Properties extends ZodType>(type: Type, properties: Properties) {

const result = {

type,

properties,

}

registry.set(type, result)

return result

}

export function payloads() {

return z

.discriminatedUnion(

"type",

registry

.entries()

.map(([type, def]) => {

return z

.object({

type: z.literal(type),

properties: def.properties,

})

.meta({

ref: "Event" + "." + def.type,

})

})

.toArray() as any,

)

.meta({

ref: "Event",

})

}

}