AI-Studio/runtime/src/environment.rs

use std::env;
use std::sync::OnceLock;
use log::{debug, info, warn};
use rocket::{delete, get};
use rocket::serde::json::Json;
use serde::Serialize;
use sys_locale::get_locale;
use crate::api_token::APIToken;

/// The data directory where the application stores its data.
pub static DATA_DIRECTORY: OnceLock<String> = OnceLock::new();

/// The config directory where the application stores its configuration.
pub static CONFIG_DIRECTORY: OnceLock<String> = OnceLock::new();

/// Returns the config directory.
#[get("/system/directories/config")]
pub fn get_config_directory(_token: APIToken) -> String {
    match CONFIG_DIRECTORY.get() {
        Some(config_directory) => config_directory.clone(),
        None => String::from(""),
    }
}

/// Returns the data directory.
#[get("/system/directories/data")]
pub fn get_data_directory(_token: APIToken) -> String {
    match DATA_DIRECTORY.get() {
        Some(data_directory) => data_directory.clone(),
        None => String::from(""),
    }
}

/// Returns true if the application is running in development mode.
pub fn is_dev() -> bool {
    cfg!(debug_assertions)
}

/// Returns true if the application is running in production mode.
pub fn is_prod() -> bool {
    !is_dev()
}

#[get("/system/language")]
pub fn read_user_language(_token: APIToken) -> String {
    get_locale().unwrap_or_else(|| {
        warn!("Could not determine the system language. Use default 'en-US'.");
        String::from("en-US")
    })
}

#[get("/system/enterprise/config/id")]
pub fn read_enterprise_env_config_id(_token: APIToken) -> String {
    //
    // When we are on a Windows machine, we try to read the enterprise config from
    // the Windows registry. In case we can't find the registry key, or we are on a
    // macOS or Linux machine, we try to read the enterprise config from the
    // environment variables.
    //
    // The registry key is:
    // HKEY_CURRENT_USER\Software\github\MindWork AI Studio\Enterprise IT
    //
    // In this registry key, we expect the following values:
    // - config_id
    //
    // The environment variable is:
    // MINDWORK_AI_STUDIO_ENTERPRISE_CONFIG_ID
    //
    debug!("Trying to read the enterprise environment for some config ID.");
    get_enterprise_configuration(
        "config_id",
        "MINDWORK_AI_STUDIO_ENTERPRISE_CONFIG_ID",
    )
}

#[delete("/system/enterprise/config/id")]
pub fn delete_enterprise_env_config_id(_token: APIToken) -> String {
    //
    // When we are on a Windows machine, we try to read the enterprise config from
    // the Windows registry. In case we can't find the registry key, or we are on a
    // macOS or Linux machine, we try to read the enterprise config from the
    // environment variables.
    //
    // The registry key is:
    // HKEY_CURRENT_USER\Software\github\MindWork AI Studio\Enterprise IT
    //
    // In this registry key, we expect the following values:
    // - delete_config_id
    //
    // The environment variable is:
    // MINDWORK_AI_STUDIO_ENTERPRISE_DELETE_CONFIG_ID
    //
    debug!("Trying to read the enterprise environment for some config ID, which should be deleted.");
    get_enterprise_configuration(
        "delete_config_id",
        "MINDWORK_AI_STUDIO_ENTERPRISE_DELETE_CONFIG_ID",
    )
}

#[get("/system/enterprise/config/server")]
pub fn read_enterprise_env_config_server_url(_token: APIToken) -> String {
    //
    // When we are on a Windows machine, we try to read the enterprise config from
    // the Windows registry. In case we can't find the registry key, or we are on a
    // macOS or Linux machine, we try to read the enterprise config from the
    // environment variables.
    //
    // The registry key is:
    // HKEY_CURRENT_USER\Software\github\MindWork AI Studio\Enterprise IT
    //
    // In this registry key, we expect the following values:
    // - config_server_url
    //
    // The environment variable is:
    // MINDWORK_AI_STUDIO_ENTERPRISE_CONFIG_SERVER_URL
    //
    debug!("Trying to read the enterprise environment for the config server URL.");
    get_enterprise_configuration(
        "config_server_url",
        "MINDWORK_AI_STUDIO_ENTERPRISE_CONFIG_SERVER_URL",
    )
}

#[get("/system/enterprise/config/encryption_secret")]
pub fn read_enterprise_env_config_encryption_secret(_token: APIToken) -> String {
    //
    // When we are on a Windows machine, we try to read the enterprise config from
    // the Windows registry. In case we can't find the registry key, or we are on a
    // macOS or Linux machine, we try to read the enterprise config from the
    // environment variables.
    //
    // The registry key is:
    // HKEY_CURRENT_USER\Software\github\MindWork AI Studio\Enterprise IT
    //
    // In this registry key, we expect the following values:
    // - config_encryption_secret
    //
    // The environment variable is:
    // MINDWORK_AI_STUDIO_ENTERPRISE_CONFIG_ENCRYPTION_SECRET
    //
    debug!("Trying to read the enterprise environment for the config encryption secret.");
    get_enterprise_configuration(
        "config_encryption_secret",
        "MINDWORK_AI_STUDIO_ENTERPRISE_CONFIG_ENCRYPTION_SECRET",
    )
}

/// Represents a single enterprise configuration entry with an ID and server URL.
#[derive(Serialize)]
pub struct EnterpriseConfig {
    pub id: String,
    pub server_url: String,
}

/// Returns all enterprise configurations. Supports the new multi-config format
/// (`id1@url1;id2@url2`) as well as the legacy single-config environment variables.
#[get("/system/enterprise/configs")]
pub fn read_enterprise_configs(_token: APIToken) -> Json<Vec<EnterpriseConfig>> {
    info!("Trying to read the enterprise environment for all configurations.");

    // Try the new combined format first:
    let combined = get_enterprise_configuration(
        "configs",
        "MINDWORK_AI_STUDIO_ENTERPRISE_CONFIGS",
    );

    if !combined.is_empty() {
        // Parse the new format: id1@url1;id2@url2; ...
        let configs: Vec<EnterpriseConfig> = combined
            .split(';')
            .filter_map(|entry| {
                let entry = entry.trim();
                if entry.is_empty() {
                    return None;
                }

                // Split at the first '@' (GUIDs never contain '@'):
                entry.split_once('@').and_then(|(id, url)| {
                    let id = id.trim().to_string();
                    let url = url.trim().to_string();
                    if id.is_empty() || url.is_empty() {
                        None
                    } else {
                        Some(EnterpriseConfig { id, server_url: url })
                    }
                })
            })
            .collect();

        return Json(configs);
    }

    // Fallback: read the legacy single-config variables:
    let config_id = get_enterprise_configuration(
        "config_id",
        "MINDWORK_AI_STUDIO_ENTERPRISE_CONFIG_ID",
    );

    let config_server_url = get_enterprise_configuration(
        "config_server_url",
        "MINDWORK_AI_STUDIO_ENTERPRISE_CONFIG_SERVER_URL",
    );

    if !config_id.is_empty() && !config_server_url.is_empty() {
        return Json(vec![EnterpriseConfig {
            id: config_id,
            server_url: config_server_url,
        }]);
    }

    Json(vec![])
}

/// Returns all enterprise configuration IDs that should be deleted. Supports the new
/// multi-delete format (`id1;id2;id3`) as well as the legacy single-delete variable.
#[get("/system/enterprise/delete-configs")]
pub fn read_enterprise_delete_config_ids(_token: APIToken) -> Json<Vec<String>> {
    info!("Trying to read the enterprise environment for configuration IDs to delete.");

    // Try the new combined format first:
    let combined = get_enterprise_configuration(
        "delete_config_ids",
        "MINDWORK_AI_STUDIO_ENTERPRISE_DELETE_CONFIG_IDS",
    );

    if !combined.is_empty() {
        let ids: Vec<String> = combined
            .split(';')
            .map(|id| id.trim().to_string())
            .filter(|id| !id.is_empty())
            .collect();

        return Json(ids);
    }

    // Fallback: read the legacy single-delete variable:
    let delete_id = get_enterprise_configuration(
        "delete_config_id",
        "MINDWORK_AI_STUDIO_ENTERPRISE_DELETE_CONFIG_ID",
    );

    if !delete_id.is_empty() {
        return Json(vec![delete_id]);
    }

    Json(vec![])
}

fn get_enterprise_configuration(_reg_value: &str, env_name: &str) -> String {
    cfg_if::cfg_if! {
        if #[cfg(target_os = "windows")] {
            info!(r"Detected a Windows machine, trying to read the registry key 'HKEY_CURRENT_USER\Software\github\MindWork AI Studio\Enterprise IT\{}' or the environment variable '{}'.", _reg_value, env_name);
            use windows_registry::*;
            let key_path = r"Software\github\MindWork AI Studio\Enterprise IT";
            let key = match CURRENT_USER.open(key_path) {
                Ok(key) => key,
                Err(_) => {
                    info!(r"Could not read the registry key 'HKEY_CURRENT_USER\Software\github\MindWork AI Studio\Enterprise IT\{}'. Falling back to the environment variable '{}'.", _reg_value, env_name);
                    return match env::var(env_name) {
                        Ok(val) => {
                            info!("Falling back to the environment variable '{}' was successful.", env_name);
                            val
                        },
                        Err(_) => {
                            info!("Falling back to the environment variable '{}' was not successful. It seems that there is no enterprise environment available.", env_name);
                            "".to_string()
                        },
                    }
                },
            };

            match key.get_string(_reg_value) {
                Ok(val) => val,
                Err(_) => {
                    info!(r"We could read the registry key 'HKEY_CURRENT_USER\Software\github\MindWork AI Studio\Enterprise IT', but the value '{}' could not be read. Falling back to the environment variable '{}'.", _reg_value, env_name);
                    match env::var(env_name) {
                        Ok(val) => {
                            info!("Falling back to the environment variable '{}' was successful.", env_name);
                            val
                        },
                        Err(_) => {
                            info!("Falling back to the environment variable '{}' was not successful. It seems that there is no enterprise environment available.", env_name);
                            "".to_string()
                        }
                    }
                },
            }
        } else {
            // In the case of macOS or Linux, we just read the environment variable:
            info!(r"Detected a Unix machine, trying to read the environment variable '{}'.", env_name);
            match env::var(env_name) {
                Ok(val) => val,
                Err(_) => {
                    info!("The environment variable '{}' was not found. It seems that there is no enterprise environment available.", env_name);
                    "".to_string()
                }
            }
        }
    }
}