import type * as oauth from "oauth4webapi"
import type {
  OAuth2ProviderConfig,
  AccountInfo,
  ProviderConfig,
} from "../../types.js"

const authorization_server: oauth.AuthorizationServer = {
  issuer: "https://discord.com",
  authorization_endpoint: "https://discord.com/api/oauth2/authorize",
  token_endpoint: "https://discord.com/api/oauth2/token",
  userinfo_endpoint: "https://discord.com/api/users/@me",
}
type DiscordAuthConfig = ProviderConfig

function DiscordAuthProvider(config: DiscordAuthConfig): OAuth2ProviderConfig {
  return {
    ...config,
    id: "discord",
    scope: "identify email",
    authorization_server,
    name: "Discord",
    algorithm: "oauth2",
    profile: (profile): AccountInfo => {
      const format = profile.avatar.toString().startsWith("a_") ? "gif" : "png"

      return {
        sub: profile.id as string,
        name: (profile.username as string) ?? (profile.global_name as string),
        email: profile.email as string,
        picture: `https://cdn.discordapp.com/avatars/${profile.id}/${profile.avatar}.${format}`,
      }
    },
  }
}

export default DiscordAuthProvider