// Daemon configuration.
//
// Lives at ~/.consciousness/daemon.toml. Loaded on startup, updated at
// runtime when modules change state (join channel, etc.).

use crate::home;
use serde::{Deserialize, Serialize};
use std::fs;
use std::path::PathBuf;

fn config_path() -> PathBuf {
    home().join(".consciousness/daemon.toml")
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub struct Config {
    #[serde(default)]
    pub irc: IrcConfig,
    #[serde(default)]
    pub telegram: TelegramConfig,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct IrcConfig {
    pub enabled: bool,
    pub server: String,
    pub port: u16,
    pub tls: bool,
    pub nick: String,
    pub user: String,
    pub realname: String,
    pub channels: Vec<String>,
}

impl Default for IrcConfig {
    fn default() -> Self {
        Self {
            enabled: true,
            server: "irc.libera.chat".into(),
            port: 6697,
            tls: true,
            nick: "ProofOfConcept".into(),
            user: "poc".into(),
            realname: "ProofOfConcept".into(),
            channels: vec!["#bcachefs".into(), "#bcachefs-ai".into()],
        }
    }
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct TelegramConfig {
    pub enabled: bool,
    pub token: String,
    pub chat_id: i64,
}

impl Default for TelegramConfig {
    fn default() -> Self {
        // Load token and chat_id from legacy files if they exist
        let token = std::fs::read_to_string(home().join(".consciousness/telegram/token"))
            .map(|s| s.trim().to_string())
            .unwrap_or_default();
        let chat_id = std::fs::read_to_string(home().join(".consciousness/telegram/chat_id"))
            .ok()
            .and_then(|s| s.trim().parse().ok())
            .unwrap_or(0);
        Self {
            enabled: !token.is_empty() && chat_id != 0,
            token,
            chat_id,
        }
    }
}

impl Config {
    pub fn load() -> Self {
        let path = config_path();
        match fs::read_to_string(&path) {
            Ok(data) => toml::from_str(&data).unwrap_or_else(|e| {
                tracing::warn!("bad config {}: {e}, using defaults", path.display());
                Self::default()
            }),
            Err(_) => {
                let config = Self::default();
                config.save();
                config
            }
        }
    }

    pub fn save(&self) {
        let path = config_path();
        if let Ok(data) = toml::to_string_pretty(self) {
            let _ = fs::write(path, data);
        }
    }
}