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path: root/src/client/util/ScriptingGlobals.ts
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import ts from 'typescript';

export { ts };

const _scriptingGlobals: { [name: string]: any } = {};
const _scriptingDescriptions: { [name: string]: any } = {};
const _scriptingParams: { [name: string]: any } = {};
// eslint-disable-next-line import/no-mutable-exports
export let scriptingGlobals: { [name: string]: any } = _scriptingGlobals;
export namespace ScriptingGlobals {
    export function getGlobals()      { return Object.keys(_scriptingGlobals); } // prettier-ignore
    export function getGlobalObj()    { return _scriptingGlobals; } // prettier-ignore
    export function getDescriptions() { return _scriptingDescriptions; } // prettier-ignore
    export function getParameters()   { return _scriptingParams; } // prettier-ignore

    export function add(global: { name: string }): void;
    export function add(name: string, global: any): void;
    export function add(global: { name: string }, decription?: string, params?: string): void;
    export function add(first: any, second?: any, third?: string) {
        let n: any;
        let obj: any;

        if (second !== undefined) {
            if (typeof first === 'string') {
                n = first;
                obj = second;
            } else {
                obj = first;
                n = first.name;
                _scriptingDescriptions[n] = second;
                if (third !== undefined) {
                    _scriptingParams[n] = third;
                }
            }
        } else if (first && typeof first.name === 'string') {
            n = first.name;
            obj = first;
        } else {
            throw new Error('Must either register an object with a name, or give a name and an object');
        }
        if (n === undefined || n === 'undefined') {
            return false;
        }
        // eslint-disable-next-line no-prototype-builtins
        if (_scriptingGlobals.hasOwnProperty(n)) {
            throw new Error(`Global with name ${n} is already registered, choose another name`);
        }
        _scriptingGlobals[n] = obj;
        return true;
    }
    export function makeMutableGlobalsCopy(globals?: { [name: string]: any }) {
        return { ..._scriptingGlobals, ...(globals || {}) };
    }

    export function setScriptingGlobals(globals: { [key: string]: any }) {
        scriptingGlobals = globals;
    }

    export function removeGlobal(name: string) {
        if (getGlobals().includes(name)) {
            delete _scriptingGlobals[name];
            if (_scriptingDescriptions[name]) {
                delete _scriptingDescriptions[name];
            }
            if (_scriptingParams[name]) {
                delete _scriptingParams[name];
            }
            return true;
        }
        return false;
    }

    export function resetScriptingGlobals() {
        scriptingGlobals = _scriptingGlobals;
    }

    // const types = Object.keys(ts.SyntaxKind).map(kind => ts.SyntaxKind[kind]);
    export function printNodeType(node: any, indentation = '') {
        console.log(indentation + ts.SyntaxKind[node.kind]);
    }
}

export function scriptingGlobal(constructor: { new (...args: any[]): any }) {
    ScriptingGlobals.add(constructor);
}