// Config parser interface for the database connection settings loader.

#pragma once

#include <optional>

#include <string>

#include <string_view>

// Parsed connection settings for the database service.

struct Config {

  std::string_view host; // connection hostname used for outbound connections

  int              port; // TCP port number

  int              workerThreads; // number of connection pool worker threads

};

// Parses a newline-delimited "key=value" config string.

// Required keys: host, port, worker_threads.

// Parameters:

//   input - raw config string fetched from KV and parsed immediately at startup

// Returns: populated Config, or nullopt if any required key is missing or invalid

std::optional<Config> parseConfig(std::string_view input);