import { existsSync, readFileSync } from 'fs';
import { join } from 'path';
import yaml from 'js-yaml';
import { logger } from '../observability/logger.js';

export interface WorkspacePreset {
  env?: Record<string, string | number | boolean | null | undefined>;
  routing?: Record<string, unknown>;
}

export async function loadWorkspacePreset(path = process.env['WORKSPACE_PRESET_PATH'] ?? join(process.cwd(), 'workspace.yaml')): Promise<WorkspacePreset | null> {
  if (!existsSync(path)) return null;
  try {
    return yaml.load(readFileSync(path, 'utf-8')) as WorkspacePreset;
  } catch (err) {
    logger.warn({ err, path }, 'workspace preset parse failed');
    return null;
  }
}

export function applyWorkspaceDefaults(preset: WorkspacePreset): void {
  for (const [key, value] of Object.entries(preset.env ?? {})) {
    if (process.env[key] === undefined && value !== null && value !== undefined) {
      process.env[key] = String(value);
    }
  }
}

export function getRoutingOverride(_taskType?: string): Record<string, unknown> | null {
  return null;
}