function calcTimespan()

in webui/js/source/datepicker.js [110:173]

• 46 lines of code
• 15 McCabe index (conditional complexity)

function calcTimespan(what) {
    let wat = ""
    let tval = ""

    // Less than N units ago?
    if (what == 'lt') {
        // Get unit and how many units
        let N = document.getElementById('datepicker_lti').value
        let unit = document.getElementById('datepicker_lts').value
        let unitt = DATE_UNITS[unit]
        if (parseInt(N) != 1) {
            unitt += "s"
        }

        // If this makes sense, construct a humanly readable and a computer version
        // of the timespan
        if (N.length > 0) {
            wat = "Less than " + N + " " + unitt + " ago"
            tval = "lte=" + N + unit
        }
    }

    // More than N units ago?
    if (what == 'mt') {
        // As above, get unit and no of units.
        let N = document.getElementById('datepicker_mti').value
        let unit = document.getElementById('datepicker_mts').value
        let unitt = DATE_UNITS[unit]
        if (parseInt(N) != 1) {
            unitt += "s"
        }

        // construct timespan val + description
        if (N.length > 0) {
            wat = "More than " + N + " " + unitt + " ago"
            tval = "gte=" + N + unit
        }
    }

    // Date range?
    if (what == 'cd') {
        // Get From and To values
        let f = document.getElementById('datepicker_cfrom').value
        let t = document.getElementById('datepicker_cto').value
        // construct timespan val + description if both from and to are valid
        if (f.length > 0 && t.length > 0) {
            wat = "From " + f + " to " + t
            tval = "dfr=" + f + "|dto=" + t
        }
    }

    // If we calc'ed a value and spawner exists, update its key/val
    if (datepicker_spawner && what && wat.length > 0) {
        document.getElementById('datepicker_radio_' + what).checked = true
        if (datepicker_spawner.options) {
            datepicker_spawner.options[0].value = tval
            datepicker_spawner.options[0].text = wat
        } else if (datepicker_spawner.value) {
            datepicker_spawner.value = wat
            datepicker_spawner.setAttribute("data", tval)
        }

    }
}