import type { JSONEncodable } from '@discordjs/util';
import type {
	ApplicationIntegrationType,
	InteractionContextType,
	Permissions,
	RESTPostAPIApplicationCommandsJSONBody,
} from 'discord-api-types/v10';
import type { RestOrArray } from '../../util/normalizeArray.js';
import { normalizeArray } from '../../util/normalizeArray.js';

export interface CommandData extends Partial<
	Pick<RESTPostAPIApplicationCommandsJSONBody, 'contexts' | 'default_member_permissions' | 'integration_types' | 'nsfw'>
> {}

/**
 * The base class for all command builders.
 */
export abstract class CommandBuilder<
	Command extends RESTPostAPIApplicationCommandsJSONBody,
> implements JSONEncodable<Command> {
	/**
	 * The API data associated with this command.
	 *
	 * @internal
	 */
	declare protected readonly data: CommandData;

	/**
	 * Sets the contexts of this command.
	 *
	 * @param contexts - The contexts
	 */
	public setContexts(...contexts: RestOrArray<InteractionContextType>) {
		this.data.contexts = normalizeArray(contexts);
		return this;
	}

	/**
	 * Sets the integration types of this command.
	 *
	 * @param integrationTypes - The integration types
	 */
	public setIntegrationTypes(...integrationTypes: RestOrArray<ApplicationIntegrationType>) {
		this.data.integration_types = normalizeArray(integrationTypes);
		return this;
	}

	/**
	 * Sets the default permissions a member should have in order to run the command.
	 *
	 * @remarks
	 * You can set this to `'0'` to disable the command by default.
	 * @param permissions - The permissions bit field to set
	 * @see {@link https://discord.com/developers/docs/interactions/application-commands#permissions}
	 */
	public setDefaultMemberPermissions(permissions: Permissions | bigint | number) {
		this.data.default_member_permissions = typeof permissions === 'string' ? permissions : permissions.toString();
		return this;
	}

	/**
	 * Clears the default permissions a member should have in order to run the command.
	 */
	public clearDefaultMemberPermissions() {
		this.data.default_member_permissions = undefined;
		return this;
	}

	/**
	 * Sets whether this command is NSFW.
	 *
	 * @param nsfw - Whether this command is NSFW
	 */
	public setNSFW(nsfw = true) {
		this.data.nsfw = nsfw;
		return this;
	}

	/**
	 * Serializes this builder to API-compatible JSON data.
	 *
	 * Note that by disabling validation, there is no guarantee that the resulting object will be valid.
	 *
	 * @param validationOverride - Force validation to run/not run regardless of your global preference
	 */
	public abstract toJSON(validationOverride?: boolean): Command;
}