CogExample.swift

import Foundation
import SwiftDisc

/// Example demonstrating a simple Cog that registers a message handler.
struct HelloCog: Cog {
    let name = "HelloCog"

    func onLoad(client: DiscordClient) async throws {
        client.onMessageCreate { message in
            if message.content.lowercased() == "!hello" {
                try? await client.sendMessage(channelId: message.channel_id, content: "Hello, \(message.author.username)!")
            }
        }
    }

    func onUnload(client: DiscordClient) async throws {
        // Unregistering handlers is left to implementations; this example is illustrative.
    }
}

@main
struct CogExampleBot {
    static func main() async {
        let token = ProcessInfo.processInfo.environment["DISCORD_TOKEN"] ?? ""
        let client = DiscordClient(token: token)

        let manager = ExtensionManager()
        let cog = HelloCog()

        do {
            try await manager.load(cog, client: client)
            try await client.start()
        } catch {
            print("Failed to start: \(error)")
        }
    }
}