import path from "path"
import { Global } from "../global"
import fs from "fs/promises"
import { z } from "zod"

export namespace Auth {
  export const Oauth = z
    .object({
      type: z.literal("oauth"),
      refresh: z.string(),
      access: z.string(),
      expires: z.number(),
    })
    .openapi({ ref: "OAuth" })

  export const Api = z
    .object({
      type: z.literal("api"),
      key: z.string(),
    })
    .openapi({ ref: "ApiAuth" })

  export const WellKnown = z
    .object({
      type: z.literal("wellknown"),
      key: z.string(),
      token: z.string(),
    })
    .openapi({ ref: "WellKnownAuth" })

  export const Info = z.discriminatedUnion("type", [Oauth, Api, WellKnown]).openapi({ ref: "Auth" })
  export type Info = z.infer<typeof Info>

  const filepath = path.join(Global.Path.data, "auth.json")

  export async function get(providerID: string) {
    const file = Bun.file(filepath)
    return file
      .json()
      .catch(() => ({}))
      .then((x) => x[providerID] as Info | undefined)
  }

  export async function all(): Promise<Record<string, Info>> {
    const file = Bun.file(filepath)
    return file.json().catch(() => ({}))
  }

  export async function set(key: string, info: Info) {
    const file = Bun.file(filepath)
    const data = await all()
    await Bun.write(file, JSON.stringify({ ...data, [key]: info }, null, 2))
    await fs.chmod(file.name!, 0o600)
  }

  export async function remove(key: string) {
    const file = Bun.file(filepath)
    const data = await all()
    delete data[key]
    await Bun.write(file, JSON.stringify(data, null, 2))
    await fs.chmod(file.name!, 0o600)
  }
}