collection-item-body.ts
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collection-item-body.ts
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	import type Collection from "./collection.js";
	import type {
	ExtractFieldDecoded,
	FieldsetEncoded,
	FieldsetInput,
	FieldsetOutput,
	} from "../main.js";
	import { Fieldset } from "./fieldset.js";
	import type { CollectionOutput } from "./collection.js";

	export type FieldNames<T extends Collection> = keyof T["fields"] & string;

	export type ItemFieldsOutput<T extends Collection> = {
	[field in FieldNames<T>]: ExtractFieldDecoded<T["fields"][field]>;
	};

	export default class CollectionItemBody<
	T extends Collection = any
	> extends Fieldset<T["fields"]> {
	constructor(
	public collection: T,
	public raw_input: Partial<FieldsetInput<T["fields"]>> = {},
	public decoded: Partial<FieldsetOutput<T["fields"]>> = {},
	public encoded: Partial<FieldsetEncoded<T["fields"]>> = {}
	) {
	super(collection.fields, raw_input, decoded, encoded);
	}

	copy(): CollectionItemBody<T> {
	return new CollectionItemBody<T>(
	this.collection,
	{ ...this.raw_input },
	{ ...this.decoded },
	{ ...this.encoded }
	);
	}

	static empty<C extends Collection>(collection: C): CollectionItemBody<C> {
	return new CollectionItemBody<C>(collection, {}, {}, {});
	}

	static fromDecoded<C extends Collection>(
	collection: C,
	decoded: Partial<CollectionOutput<C>>
	) {
	return new CollectionItemBody<C>(collection, {}, decoded, {});
	}
	}