export const isNumeric = (value: string | number): boolean => {
    return ((value != null) &&
        (value !== '') &&
        !isNaN(Number(value.toString())))
}

export const contains = (source: string, search: string | string[], caseInsensitive: boolean = false): boolean => {
    if (caseInsensitive) {
        source = source.toLowerCase()
        if (Array.isArray(search)) {
            search = search.map(s => s.toLowerCase())
        }
        else {
            search = search.toLowerCase()
        }
    }

    if (Array.isArray(search)) {
        for (const s of search) {
            if (source.indexOf(s) >= 0) return true
        }
        return false
    }
    return source.indexOf(search) >= 0
}

export const startsWith = (source: string, search: string): boolean => {
    return source.substr(0, search.length) === search
}

export const remove = (source: string, search: string): string => {
    return source.replace(search, "")
}

export const trimEnd = (source: string, search: string): string => {
    return source.endsWith(search) ? source.slice(0, -search.length) : source
}

export const repeat = (source: string, count: number): string => {
    let value = ''
    for (let i = 0; i < count; i++) value += source
    return value
}

export const count = (source: string, search: string): number => {
    return source.split(search).length - 1
}

export const isGUID = (str: string): boolean => {
    const GUIDPattern = /^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$/;
    return GUIDPattern.test(str);
}

export const getFileNameWithoutExtension = (filePath: string | null | undefined): string | null => {
    if (!filePath) return null
    const lastSlash = Math.max(filePath.lastIndexOf('/'), filePath.lastIndexOf('\\'))
    const fileWithExt = filePath.substring(lastSlash + 1)
    const lastDot = fileWithExt.lastIndexOf('.')
    return lastDot > 0 ? fileWithExt.substring(0, lastDot) : fileWithExt
}