// Opt-in flow logging for the toolkit. OFF by default so the published package
// is quiet in production. Turn it on either from code — `setDebug(true)` — or at
// runtime from the browser console: `globalThis.__EDGE_MCP_DEBUG__ = true`.

let enabled = false;

// Colored prefix so the toolkit's lines pop in a busy console. `%c` styles only
// the prefix segment; the rest of the line stays at the console's default color.
const PREFIX = '%c[edge-mcp]';
const PREFIX_STYLE = 'color:#c084fc;font-weight:bold';

/** Enable or disable the toolkit's `[edge-mcp]` flow logs. */
export function setDebug(on: boolean): void {
  enabled = on;
}

function isOn(): boolean {
  if (enabled) return true;
  try {
    return Boolean((globalThis as { __EDGE_MCP_DEBUG__?: unknown }).__EDGE_MCP_DEBUG__);
  } catch {
    return false;
  }
}

/** Log a flow event when debug is on. No-op otherwise. */
export function debugLog(...args: unknown[]): void {
  if (!isOn()) return;
  // eslint-disable-next-line no-console
  console.info(PREFIX, PREFIX_STYLE, ...args);
}

/**
 * Warn with the colored `[edge-mcp]` prefix. Always shown (NOT gated by debug):
 * these signal real problems (e.g. a failed native-registry mirror) that should
 * surface even with flow logging off.
 */
export function edgeWarn(...args: unknown[]): void {
  // eslint-disable-next-line no-console
  console.warn(PREFIX, PREFIX_STYLE, ...args);
}