parsers.js

function parseArray(value){
    if (!value) return [];
    if (Array.isArray(value)) return value;
    if (typeof(value) === "string") return value.split("\n").map(line=>line.trim()).filter(line=>line);
    throw "Unsupprted array format";
}

module.exports = {
    boolean : (value) =>{
        if (!value || value === "false") return false;
        return true;
    },
    text : (value) =>{
        if (value)
            return value.split('\n');
        return undefined;
    },
    number: (value)=>{
        if (!value) return undefined;
        const parsed = parseInt(value);
        if (parsed === NaN) {
            throw `Value ${value} is not a valid number`
        }
        return parsed;
    },
    autocomplete: (value, getVal)=>{
        if (!value) return undefined;
        if (typeof(value) == "object") return (getVal ? value.value : value.id) || value;
        return value;
    },
    autocompleteOrArray: (value)=>{
        if (!value) return [];
        if (Array.isArray(value)) return value;
        if (typeof(value) == "object") return [value.id || value];
        return [value];
    },
    tags: (value, letKeyOnly)=>{
        if (!value) return undefined;
        if (typeof(value) == "string") {
            const obj = {};
            value.split("\n").forEach((line) => {
                let [key, ...val] = line.trim().split("=");
                if (!key || (!letKeyOnly && !val)) throw "bad labels/tags format";
                if (val.length) obj[key] = val.join("=");
                else obj[key] = "";
            });
            return obj;
        }
        throw `Value ${value} is not a valid tags/labels input.`;
    },
    json: (value)=>{
        if (!value) return undefined;
        if (typeof(value) === "object") return value;
        if (typeof(value) == "string") {
            value = value.trim();
            if (value.startsWith("{") && value.endsWith("}")){
                try {
                    return JSON.parse(value);
                }
                catch (e) {
                    throw `Invalid JSON! ` + e.message;
                }
            }
            else {
                if (!fs.existsSync(value)) throw `Couldn't find file '${value}'.`;
            const fileContent = fs.readFileSync(value, 'utf8');
                try {
                    const obj = JSON.parse(fileContent);
                    return obj;
                }
                catch {
                    throw `The file '${value}' doesn't contain a valid JSON.`
                }
            }
            
        }
        throw `Value ${value} is not a valid JSON input.`;
    },
    string: (value)=>{
        if (!value) return undefined;
        if (typeof(value) === "string") return value.trim();
        throw `Value ${value} is not a valid string`;
    },
    array: parseArray
}