/*
 strings.ts - ESP3D WebUI helpers file

 Copyright (c) 2021 Alexandre Aussourd. All rights reserved.
 Modified by Luc LEBOSSE 2021

 This code is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.
 This code is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.
 You should have received a copy of the GNU Lesser General Public
 License along with This code; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

const capitalize = (s: string): string =>
    typeof s === "string" ? s.charAt(0).toUpperCase() + s.slice(1) : ""

function compareStrings(a: string, b: string): number {
    // case-insensitive comparison
    a = a.toLowerCase()
    b = b.toLowerCase()
    return a < b ? -1 : a > b ? 1 : 0
}

function formatFileSizeToString(size: number | string): string {
    if (size == -1) return size.toString()
    let formatedSize = parseInt(size.toString())
    if (formatedSize === -1 || isNaN(formatedSize) || size.toString().length == 0)
        return ""
    const units = ["B", "KB", "MB", "GB"]
    let i = 0
    while (formatedSize >= 1024) {
        formatedSize /= 1024
        ++i
    }
    return `${formatedSize.toFixed(2)} ${units[i]}`
}

const hslToHex = (h: number, s: number, l: number): string => {
    l /= 100
    const a = (s * Math.min(l, 1 - l)) / 100
    const f = (n: number): string => {
        const k = (n + h / 30) % 12
        const color = l - a * Math.max(Math.min(k - 3, 9 - k, 1), -1)
        return Math.round(255 * color)
            .toString(16)
            .padStart(2, "0") // convert to Hex and prefix "0" if needed
    }
    return `#${f(0)}${f(8)}${f(4)}`
}

const beautifyJSONString = (jsonstring: string): string => {
    try {
        return JSON.stringify(JSON.parse(jsonstring), null, " ")
    } catch (e) {
        return "error"
    }
}

interface Variable {
    name: string
    value: string
    notprintable?: boolean
}

//replace several variable from a string
//array format [{name,value},...]
function replaceVariables(
    arrayRef: Variable[],
    string: string,
    onlyprintable: boolean = false,
    reverted: boolean = false
): string {
    if (Array.isArray(arrayRef)) {
        return arrayRef.reduce((acc, curr) => {
            if (reverted) {
                return acc.replace(curr.value, curr.name)
            } else {
                if (onlyprintable && curr.notprintable) return acc
                return acc.replaceAll(curr.name, curr.value)
            }
        }, string)
    }
    return string
}

//Format status
const formatStatus = (status: string): string => {
    if (status.toUpperCase().indexOf("OK") != -1) return "S126"
    if (status.toUpperCase().indexOf("ERROR") != -1) return "S22"
    return status
}

const isFloat = (n: number): boolean => {
    return Number(n) === n && n % 1 !== 0
}

export {
    capitalize,
    hslToHex,
    beautifyJSONString,
    compareStrings,
    formatFileSizeToString,
    formatStatus,
    replaceVariables,
    isFloat,
}
export type { Variable }