import type { VoidyClient } from "./VoidyClient";
import type { Resource } from "../types/Resource";

export interface Context<I> {
  client: VoidyClient;
  resource: Resource;
  interaction: I;
  buttonId(name: string, ...args: string[]): string;
  modalId(name: string, ...args: string[]): string;
  args(customId: string): string[];
}

export interface EventContext {
  client: VoidyClient;
  resource: Resource;
  buttonId(name: string, ...args: string[]): string;
  modalId(name: string, ...args: string[]): string;
}

function buildId(origin: string, name: string, ...args: string[]): string {
  const segments = [`${origin}.${name}`, ...args];
  return segments.join("-");
}

function parseArgs(resourceId: string, customId: string): string[] {
  const prefix = resourceId + "-";
  if (customId.startsWith(prefix)) {
    return customId.slice(prefix.length).split("-");
  }
  if (customId === resourceId) return [];
  return customId.split("-");
}

export function createContext<I>(
  client: VoidyClient,
  resource: Resource,
  interaction: I,
): Context<I> {
  return {
    client,
    resource,
    interaction,
    buttonId: (name, ...args) => buildId(resource.origin, name, ...args),
    modalId: (name, ...args) => buildId(resource.origin, name, ...args),
    args: (customId) => parseArgs(resource.id, customId),
  };
}

export function createEventContext(
  client: VoidyClient,
  resource: Resource,
): EventContext {
  return {
    client,
    resource,
    buttonId: (name, ...args) => buildId(resource.origin, name, ...args),
    modalId: (name, ...args) => buildId(resource.origin, name, ...args),
  };
}