// parse the params from http call

import {returnOnError} from "./reporterror.js"

const checkParams = (params, mo) => {
    let o = {opts: {}, err: null}
    if ((mo.mandatory.length !== 0) && (params === undefined)) {
        return returnOnError(o, 'NOPARAMETER', checkParams.name )
    }
    for (let p of mo.mandatory) {
        if (!(p.name in params)) {
            return returnOnError(o, 'NOMANDPARAM', checkParams.name, p.name)
        }
        if (p.type === 'int') {
            let x = parseInt(params[p.name])
            if (isNaN(x)) {
                return returnOnError(o, 'PARAMNONUM', checkParams.name, p.name)
            } else {
                o.opts[p.name] = x
                continue
            }
        } else if (p.type === 'float') {
            let x = parseFloat(params[p.name])
            if (isNaN(x)) {
                return returnOnError(o, 'PARAMNONUM', checkParams.name, p.name)
            } else {
                o.opts[p.name] = x
                continue
            }
        }
        o.opts[p.name] = params[p.name]
    }
    for(let p of mo.optional) {
        if (!(p.name in params)) {
            o.opts[p.name] = p.default
        } else {
            if (p.type === 'int') {
                let x = parseInt(params[p.name])
                if (isNaN(x)) {
                    o.opts[p.name] = p.default
                } else {
                    o.opts[p.name] = x
                }
            } else if (p.type === 'bool') {
                o.opts[p.name] = params[p.name] === 'true'
            } else {
                o.opts[p.name] = params[p.name]
            }
        }
    }
    return o
}

export default checkParams