#include "services.hpp"
#include "utils/envmanager.hpp"
#include "utils/directories.hpp"
#include "templates.hpp"
#include "config.hpp"
#include <boost/filesystem.hpp>
#include <iostream>

namespace fs = boost::filesystem;

namespace dropshell {   

std::vector<ServiceInfo> get_server_services_info(const std::string& server_name) {
    std::vector<ServiceInfo> services;

    if (server_name.empty())
        return services;

    std::vector<std::string> local_config_directories = get_global_config()->get_local_config_directories();
    if (local_config_directories.empty()) {
        std::cerr << "Error: No local config directories found" << std::endl;
        std::cerr << "Run 'dropshell init' to initialise DropShell" << std::endl;
        return services;
    }

    for (int i = 0; i < getNumConfigDirectories(); i++) {
        std::string serverpath = get_local_config_servers_path(i);
        if (serverpath.empty()) {
            std::cerr << "Error: Server directory not found: " << serverpath << std::endl;
            return services;
        }
        fs::path server_dir = fs::path(serverpath) / server_name;
        if (fs::exists(server_dir)) {
            for (const auto& entry : fs::directory_iterator(server_dir)) {
                if (fs::is_directory(entry)) {
                    ServiceInfo service = get_service_info(server_name, entry.path().filename().string());
                    if (!service.template_name.empty()) {
                        services.push_back(service);
                    }
                }
            }
        } // end of for (int i = 0; i < getNumConfigDirectories(); i++)
    }
    
   
    return services;
}


ServiceInfo get_service_info(const std::string &server_name, const std::string &service_name)
{
    if (server_name.empty() || service_name.empty())
        return ServiceInfo();

    std::string service_dir = get_local_service_path(server_name, service_name);
    if (service_dir.empty()) 
        return ServiceInfo();

    ServiceInfo service;
    service.path = service_dir;
    service.service_name = service_name;

    // now set the template name and path.
    std::string local_service_env_path = get_local_service_env_path(server_name, service_name);
    envmanager env(local_service_env_path);
    if (!env.load()) {
        std::cerr << "Error: service.env missing from " << local_service_env_path << std::endl;
        return ServiceInfo();
    }
    service.template_name = env.get_variable("TEMPLATE");

    if (service.template_name.empty()) {
        std::cerr << "Error: TEMPLATE variable not defined in " << local_service_env_path << std::endl;
        return ServiceInfo();
    }

    template_info tinfo;
    if (!get_template_info(service.template_name, tinfo)) {
        std::cerr << "Error: Template '" << service.template_name << "' not found" << std::endl;
        return ServiceInfo();
    }

    // find the template path   
    service.template_path = tinfo.path;

    return service;
}

std::set<std::string> get_used_commands(const std::string &server_name, const std::string &service_name)
{
    std::set<std::string> commands;

    if (server_name.empty() || service_name.empty())
        return commands;

    ServiceInfo service = get_service_info(server_name, service_name);
    if (service.template_path.empty()) {
        std::cerr << "Error: Service not found: " << service_name << std::endl;
        return commands;
    }

    // iterate over all files in the template path, and add the command name to the set.
    // commands are .sh files that don't begin with _
    fs::path template_path = fs::path(service.template_path);
    for (const auto& entry : fs::directory_iterator(template_path)) {
        if (fs::is_regular_file(entry) && entry.path().extension() == ".sh" && (entry.path().filename().string().rfind("_", 0) != 0)) 
            commands.insert(entry.path().stem().string());
    }
    return commands;
}

} // namespace dropshell