import { capitalize, nthIndexOf } from "../util";

/**
 * Parses an `operationId` returning app, view and action
 *
 * ## Examples
 *
 * `bananas.me:list` -> `{ app: "bananas", view: "me", action: "list" }`
 *
 * `bananas.login:create` -> `{ app: "bananas", view: "login", action: "create" }`
 *
 * `bananas.i18n:list` -> `{ app: "bananas", view: "i18n", action: "list" }`
 */
export function parseOperationId(
  operationId: string,
): { app: string; view: string; action: string } | undefined {
  const match = operationId.match(/^([a-zA-Z0-9_-]+)\.([a-zA-Z0-9_-]+):([a-zA-Z0-9_-]+)$/);

  if (match !== null) {
    return {
      app: match[1],
      view: match[2],
      action: match[3],
    };
  }

  return undefined;
}

export function isNavigation(tags: string[]): boolean {
  return tags.includes("navigation");
}

export function getPath(endpoint: string, method: string, action: string | undefined): string {
  return (method.toLowerCase() === "get" ? endpoint : `${endpoint}${action ?? ""}/`).replace(
    /{([^}]*)}/,
    ":$1",
  );
}

function getBasePath(path: string): string {
  return path.substring(0, nthIndexOf(path, "/", 2, 1) + 1 || undefined);
}

export function getPage(path: string, action: string | undefined): string {
  const basePath = getBasePath(path);
  const relativeBasePath = basePath.slice(1);
  return `${relativeBasePath}${action}`;
}

export function getAppLabel(tags: string[]): string {
  return tags.filter((tag) => tag.startsWith("app:"))[0]?.split(":")[1];
}

export function getView(id: string): string {
  return id.substring(id.indexOf(".") + 1, id.indexOf(":"));
}

export function getTitle(view: string, summary?: string): string {
  return summary ?? (view && capitalize(view.replace("_", " ")));
}

export function stripPathPrefix(path: string, prefix?: string) {
  if (prefix == null) {
    return path;
  }

  if (path.startsWith(prefix)) {
    return path.slice(prefix.length);
  }

  console.warn(`Path "${path}" does not start with api prefix "${prefix}"`);
  return path;
}

export function parentPath(schema: string) {
  return schema.substring(0, schema.lastIndexOf("/"));
}