use anyhow::{Result, anyhow};
use chrono::Utc;
use indexmap::IndexMap;
use parking_lot::RwLock;
use std::sync::LazyLock;

static ACCESS_TOKENS: LazyLock<RwLock<IndexMap<String, (String, i64)>>> =
    LazyLock::new(|| RwLock::new(IndexMap::new()));

pub fn get_access_token(client_name: &str) -> Result<String> {
    ACCESS_TOKENS
        .read()
        .get(client_name)
        .map(|(token, _)| token.clone())
        .ok_or_else(|| anyhow!("Invalid access token"))
}

pub fn is_valid_access_token(client_name: &str) -> bool {
    let access_tokens = ACCESS_TOKENS.read();
    let (token, expires_at) = match access_tokens.get(client_name) {
        Some(v) => v,
        None => return false,
    };
    !token.is_empty() && Utc::now().timestamp() < *expires_at
}

pub fn set_access_token(client_name: &str, token: String, expires_at: i64) {
    let mut access_tokens = ACCESS_TOKENS.write();
    let entry = access_tokens.entry(client_name.to_string()).or_default();
    entry.0 = token;
    entry.1 = expires_at;
}