// @flow
type ModuleType = Object /* { [symbol]: any } */;
type FilterFunc = (module: ModuleType) => boolean;

function getModules(): any {
    let modules: { c: mixed[] } = {};

    window.webpackChunkdiscord_app.push([
        [Math.random().toString(36)],
        {},
        (e) => {
            modules = e;
        }
    ]);

    return modules.c;
}

function filter(filter: FilterFunc, moduleList: any): Array<Object> {
    let modules: Array<mixed[]> = [];
    for (const mod in moduleList) {
        const module = moduleList[mod].exports;
        if (module) {
            if (module.default && module.__esModule && filter(module.default)) {
                modules.push(module.default);
            } else if (filter(module)) {
                modules.push(module);
            }
        }
    }
    return modules;
}

type WebpackModules = {
    modules: () => any,
    filter: (filter: FilterFunc, moduleList: any) => Object[],
    find: (filter: FilterFunc) => Object,
    findAll: (filter: FilterFunc) => Object[],
    findByProps: (...props: string[]) => Object,
    findByPropsAll: (...props: string[]) => Object[],
    findByDisplayName: (prop: string) => Object[]
};

let webpack: WebpackModules = {
    modules: getModules(),
    filter: filter,
    find: (filter: FilterFunc) => webpack.filter(filter, webpack.modules)[0],
    findAll: (filter: FilterFunc) => webpack.filter(filter, webpack.modules),
    findByProps: (...props: Array<string>) => {
        return webpack.find((module) => {
            return props.every((prop) => module[prop] !== undefined);
        });
    },
    findByPropsAll: (...props: Array<string>) => {
        return webpack.findAll((module) =>
            props.every((prop) => module[prop] !== undefined)
        );
    },
    findByDisplayName: (prop: string) => {
        return webpack.find((m) => m?.default?.displayName === prop);
    }
};

export default webpack;