import { COMMAND_META_KEY } from "@/decorators/command";
import type { CommandCtor } from "@/types";
import type { Message } from "@fluxerjs/core";

export function isCommandCtor(val: unknown): val is CommandCtor {
  return typeof val === "function" && Reflect.hasMetadata(COMMAND_META_KEY, val);
}

export async function GetMemeberPermission(message: Message) {
  if (!message.guildId) return null;
  const guild = message.guild ?? (await message.client.guilds.resolve(message.guildId));
  if (!guild) return null;

  const member =
    guild.members.get(message.author.id) ?? (await guild.fetchMember(message.author.id));
  return member.permissions ?? null;
}

/***
 * Helper for getting color palette
 * @param initial - color palette record/map
 */
export class ColorPalette {
  private colors: Map<string, string>;

  constructor(initial?: Record<string, string>) {
    // Either custom initial or use default color palette (Catppuccin Mocha)
    this.colors = new Map(
      Object.entries(
        initial ?? {
          rosewater: "#f5e0dc",
          flamingo: "#f2cdcd",
          pink: "#f5c2e7",
          mauve: "#cba6f7",
          red: "#f38ba8",
          maroon: "#eba0ac",
          peach: "#fab387",
          yellow: "#f9e2af",
          green: "#a6e3a1",
          teal: "#94e2d5",
          sky: "#89dceb",
          sapphire: "#74c7ec",
          blue: "#89b4fa",
          lavender: "#b4befe",
        },
      ),
    );
  }

  add(name: string, hex: string): this {
    this.colors.set(name, hex);
    return this;
  }

  get(name: string): string {
    const color = this.colors.get(name);
    if (!color) throw new Error(`Color ${name} not found in palette`);

    return color;
  }

  getOrFallback(name: string, fallback: string): string {
    return this.colors.get(name) ?? fallback;
  }

  has(name: string): boolean {
    return this.colors.has(name);
  }

  remove(name: string): boolean {
    return this.colors.delete(name);
  }

  all(): Record<string, string> {
    return Object.fromEntries(this.colors);
  }

  keys(): string[] {
    return [...this.colors.keys()];
  }

  values(): string[] {
    return [...this.colors.values()];
  }
}