const fs = require("node:fs")
const path = require("node:path")
let optionsFile

function initOptions($optionFile) {
    optionsFile = $optionFile
    const gameDir = path.parse($optionFile).dir
    if (!fs.existsSync(gameDir)) {
        try {
            fs.mkdirSync(gameDir)
        } catch (error) {
            throw error
        }
    }
    if (!fs.existsSync($optionFile)) {
        try {
            fs.copyFileSync(path.join(__dirname, "..", "options.txt"), $optionFile)
        } catch (error) {
            throw error
        }
    }
}

function parseOptions() {
    const options = fs.readFileSync(optionsFile, "utf-8").toString().split("\n").filter(line => line.trim() !== "")
    const parsedOptions = {}
    for (let i = 0; i < options.length; i++) {
        const line = options[i].trim()
        const [key, value] = line.split(":")
        if (key && value) {
            const trimmedValue = value.trim().toLowerCase()
            if (trimmedValue === "true" || trimmedValue === "false") {
                parsedOptions[key.trim()] = trimmedValue === "true"
            } else {
                parsedOptions[key.trim()] = isNaN(value) ? value.trim() : parseInt(value, 10)
            }
        }
    }
    return parsedOptions
}

function stringfyOptions(optionsObject) {
    const optionsArray = []
    if (typeof optionsObject !== "object" || optionsObject === null) {
        throw new Error("Invalid options object")
    }
    for (const settingKey in optionsObject) {
        if (Object.prototype.hasOwnProperty.call(optionsObject, settingKey)) {
            const settingValue = optionsObject[settingKey]
            if (typeof settingValue === "object" || typeof settingValue === "function" || typeof settingValue === "symbol") {
                throw new Error(`Invalid value for setting "${settingKey}": ${settingValue}`)
            }
            optionsArray.push(`${settingKey}:${settingValue}`)
        }
    }
    return optionsArray.join("\n")
}

function saveOptions(options) {
    fs.writeFileSync(optionsFile, options, "utf8")
}

module.exports = {
    initOptions,
    saveOptions,
    parseOptions,
    stringfyOptions
}