import type { FormatGenerator } from "../generators/index.ts";
import type {
	AnyIntrospectedType,
	GirMemberElement,
	IntrospectedBaseOptions,
	IntrospectedMetadata,
	OptionsLoad,
} from "../types/index.ts";
import type { GirVisitor } from "../visitor.ts";
import type { IntrospectedNamespace } from "./namespace.ts";

export abstract class IntrospectedBase<Parent extends IntrospectedNamespace | AnyIntrospectedType | null> {
	name: string;
	doc?: string | null;
	metadata?: IntrospectedMetadata;
	deprecated?: boolean;
	resolve_names: string[] = [];
	private _emit = true;
	private _commentWarning?: string;
	private _isPrivate: boolean;
	private _isIntrospectable: boolean;
	private _parent: Parent;

	constructor(name: string, parent: Parent, options: IntrospectedBaseOptions = {}) {
		this.name = name;
		this._parent = parent;
		this._isPrivate = options.isPrivate ?? false;
		this._isIntrospectable = options.isIntrospectable ?? true;
		this.doc = options.doc ?? null;
	}

	get parent(): Parent {
		return this._parent;
	}

	/**
	 * Set a warning to be emitted with this node. Often used to note type
	 * conflicts or potential differences from GJS code.
	 *
	 * @param warning
	 */
	setWarning(warning: string) {
		this._commentWarning = warning;
	}

	getWarning(): string | undefined {
		return this._commentWarning;
	}

	abstract get namespace(): IntrospectedNamespace;

	get isIntrospectable() {
		return this._isIntrospectable;
	}

	get isPrivate() {
		return this._isPrivate;
	}

	setPrivate(priv: boolean) {
		this._isPrivate = priv;
	}

	noEmit() {
		this._emit = false;
	}

	get emit() {
		return this._emit;
	}

	protected _copyBaseProperties(from: this): this {
		this.doc = from.doc;
		this.metadata = from.metadata;
		this.deprecated = from.deprecated;
		this.resolve_names = from.resolve_names;

		// Whether this node should be emitted.
		this._emit = from._emit;
		this._isPrivate = from._isPrivate;
		this._isIntrospectable = from.isIntrospectable;

		return this;
	}

	abstract copy(options?: { parent?: Parent }): IntrospectedBase<Parent>;

	abstract accept(visitor: GirVisitor): IntrospectedBase<Parent>;

	static fromXML(
		_element: GirMemberElement,

		_parent: IntrospectedNamespace | AnyIntrospectedType,

		_options: OptionsLoad,
	): AnyIntrospectedType | null {
		throw new Error("GirBase cannot be instantiated");
	}

	abstract asString<T extends FormatGenerator<unknown>>(
		generator: T,
	): (T extends FormatGenerator<infer R> ? R : never) | null;
	abstract asString<T extends FormatGenerator<unknown>>(generator: T): unknown;
}