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/**
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 * Metadata args utility functions.
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 */
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export class MetadataUtils {
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    /**
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     * Gets given's entity all inherited classes.
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     * Gives in order from parents to children.
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     * For example Post extends ContentModel which extends Unit it will give
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     * [Unit, ContentModel, Post]
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     */
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    static getInheritanceTree(entity: Function): Function[] {
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        const tree: Function[] = [entity];
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        const getPrototypeOf = (object: Function): void => {
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            const proto = Object.getPrototypeOf(object);
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            if (proto && proto.name) {
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                tree.push(proto);
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                getPrototypeOf(proto);
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            }
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        };
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        getPrototypeOf(entity);
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        return tree;
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    }
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    /**
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     * Checks if this table is inherited from another table.
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     */
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    static isInherited(target1: Function, target2: Function) {
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        return target1.prototype instanceof target2;
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    }
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    /**
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     * Filters given array of targets by a given classes.
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     * If classes are not given, then it returns array itself.
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     */
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    static filterByTarget<T extends { target?: any }>(array: T[], classes?: any[]): T[] {
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        if (!classes) return array;
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        return array.filter(item => item.target && classes.indexOf(item.target) !== -1);
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    }
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}

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