import {CamelCase} from "type-fest";

export function toPascalCase(str: string): string {
    return (
        str
            // Split on non-word characters, underscores, spaces, or boundaries between a lower-case letter and an upper-case letter, or a number and a letter
            .split(/\W|_|\s+|(?<=[a-z])(?=[A-Z])|(?<=[0-9])(?=[A-Za-z])/)
            // Capitalize the first letter of each word and join them together
            .map((word) => word.charAt(0).toUpperCase() + word.slice(1).toLowerCase())
            .join("")
    );
}

export function toCamelCase(str: string): CamelCase<typeof str> {
    return (
        str
            // Split on non-word characters, underscores, spaces, or boundaries between a lower-case letter and an upper-case letter, or a number and a letter
            .split(/\W|_|\s+|(?<=[a-z])(?=[A-Z])|(?<=[0-9])(?=[A-Za-z])/)
            // Capitalize the first letter of each word and join them together
            .map((word, index) => (index == 0 ? word.charAt(0).toLowerCase() : word.charAt(0).toUpperCase()) + word.slice(1).toLowerCase())
            .join("")
    );
}


export type Clean<T> = T extends undefined ? {} : T


export type ValueUnion<T> = Required<T[keyof T]>;


export function typedObjectKeys<O extends object>(object: O): (keyof O)[] {
    return Object.keys(object) as (keyof O)[]
}

export function typedObjectEntries<O extends object>(object: O): [keyof O, O[keyof O]][] {
    return Object.entries(object) as [keyof O, O[keyof O]][]
}