export interface ConfigValidationIssue {
  code: string;
  message: string;
  path: string;
  targetName?: string;
}

export function formatConfigIssues(issues: ConfigValidationIssue[]): string {
  return issues.map(formatConfigIssue).join("\n");
}

export function issue(code: string, path: string, message: string, targetName?: string): ConfigValidationIssue {
  return targetName === undefined ? { code, message, path } : { code, message, path, targetName };
}

export function joinPath(base: string, key: string): string {
  if (base === "") return key;
  if (key.startsWith("[")) return `${base}${key}`;
  return `${base}.${key}`;
}

export function renderPath(path: string): string {
  return path === "" ? "配置文件" : path;
}

export function throwConfigIssues(issues: ConfigValidationIssue[]): never {
  throw new Error(formatConfigIssues(issues));
}

function formatConfigIssue(issue: ConfigValidationIssue): string {
  if (issue.targetName) {
    const path = issue.path.replace(/^targets\[\d+\]\.?/, "");
    const renderedPath = path === "" ? "配置" : path;
    return `target "${issue.targetName}" 的 ${renderedPath} ${issue.message}`;
  }
  return `${renderPath(issue.path)} ${issue.message}`;
}