/* Woman's Voice
 * accounting.js: The accounting-related JavaScript subroutines.
 */

/*  Copyright (c) 2007-2018 imacat.
 * 
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

/* Author: imacat <imacat@mail.imacat.idv.tw>
 * First written: 2007-09-26
 */

// setAutoSummary: Automatically supply a summary
function setAutoSummary(subj) {
    var i, j, sum, dateText, today, subjText, subjCode, thisMonth;
    // Get the name prefix of this selection
    i = subj.name.indexOf("subj");
    // Obtain the summary column
    sum = subj.form[subj.name.substr(0, i) + "summary"];
    // Get today's date
    today = new Date;
    dateText = trim(subj.form.date.value);
    if (!isDate(dateText))
        return;
    today.setFullYear(dateText.substr(0, 4));
    today.setMonth(dateText.substr(5, 2) - 1);
    today.setDate(dateText.substr(8, 2));
    thisMonth = today.getMonth() + 1;
    // Obtain the selected subject
    // The value of the selection is S/N but not subject code,
    // so we have to obtain the subject code from the option text
    subjText = subj.options[subj.selectedIndex].text;
    subjCode = parseInt(subjText.substr(0, subjText.indexOf(" ")));
    switch (subjCode) {
    // 74811 共同生活基金-燕秋
    case 74811:
        sum.value = "燕秋" + thisMonth + "月";
        break;
    // 74812 共同生活基金-士青
    case 74812:
        sum.value = "士青" + thisMonth + "月";
        break;
    // 6252 租金支出
    case 6252:
        sum.value = "房租" + thisMonth + "月";
        break;
    // 62562 市話 02-3233-7444
    case 62562:
    // 2142 應付—電話費
    case 2142:
        // 20 or later - assume to be of this month
        if (today.getDate() >= 20) {
            sum.value = "電話費" + thisMonth + "月";
        // Before 20 - assume to be of previous month
        } else {
            sum.value = "電話費" + ((thisMonth + 10) % 12 + 1) + "月";
        }
        break;
    // 62611 電費
    case 62611:
        i = ((thisMonth + thisMonth % 2 + 8) % 12 + 1)
        j = ((thisMonth + thisMonth % 2 + 9) % 12 + 1)
        sum.value = "電費" + i + "–" + j + "月";
        break;
    // 62612 水費
    case 62612:
        i = ((thisMonth + thisMonth % 2 + 8) % 12 + 1)
        j = ((thisMonth + thisMonth % 2 + 9) % 12 + 1)
        sum.value = "水費" + i + "–" + j + "月";
        break;
    // 62613 瓦斯費
    case 62613:
        i = ((thisMonth + thisMonth % 2 + 8) % 12 + 1)
        j = ((thisMonth + thisMonth % 2 + 9) % 12 + 1)
        sum.value = "瓦斯費" + i + "–" + j + "月";
        break;
    // 62614 公用電費
    case 62614:
        i = ((thisMonth + thisMonth % 2 + 8) % 12 + 1)
        j = ((thisMonth + thisMonth % 2 + 9) % 12 + 1)
        sum.value = "公用電費" + i + "–" + j + "月";
        break;
    // 62732 有線電視—新視波
    case 62732:
        if (thisMonth == 12 || thisMonth == 1)
            sum.value = "新視波1–6月"
        else if (thisMonth == 6 || thisMonth == 7)
            sum.value = "新視波7–12月"
        break;
    }
    return;
}

// acctRepQueryDisableNoUseRanges: Disable range parameters that are not in use
function acctRepQueryDisableNoUseRanges() {
    var i, form, curValue;
    // Obtain our form
    form = document.forms["acctrepquery"];
    if (form == undefined)
        return;
    // Find the current selection
    for (i = 0; i < form.r.length; i++) {
        if (form["r"][i].checked) {
            curValue = form["r"][i].value;
            break;
        }
    }
    // Disable or enable the month selection
    if (curValue == "m")
        form["m"].disabled = false;
    else
        form["m"].disabled = true;
    // Disable or enable the year selection
    if (curValue == "y")
        form["y"].disabled = false;
    else
        form["y"].disabled = true;
    // Disable or enable the start and end date
    if (curValue == "s") {
        form["f"].disabled = false;
        form["t"].disabled = false;
    } else {
        form["f"].disabled = true;
        form["t"].disabled = true;
    }
    return;
}

// calcTotal: Calculating the total
function calcTotal(amount) {
    var i, j, side, sum, a, pos, isNumber;
    a = "NT$ 3,433.00";
    side = amount.name.substr(0, 4);
    for (   i = 0, sum = 0;
            amount.form[side + i + "amount"] != undefined;
            i++) {
        a = amount.form[side + i + "amount"];
        // Trim the text
        a.value = trim(a.value);
        // Remove the dollar sign
        if (a.value.substr(0, 3) == "NT$")
            a.value = a.value.substr(3);
        // Trim the text again, for possible spaces after the dollar sign
        a.value = trim(a.value);
        // Remove the decimal point
        if (a.value.substr(a.value.length - 3) == ".00")
            a.value = a.value.substr(0, a.value.length - 3);
        // Remove the thousand seperators
        while ((pos = a.value.indexOf(",")) != -1) {
            a.value = a.value.substr(0, pos) + a.value.substr(pos + 1);
        }
        // Check if it is a number
        for (j = 0, isNumber = true; j < a.value.length; j++) {
            if (a.value.charCodeAt(j) < 48 || a.value.charCodeAt(j) > 57) {
                isNumber = false;
                break;
            }
        }
        // Add the amount
        if (isNumber)
            sum = sum + a.value * 1;
    }
    a = amount.form[side + "total"];
    if (a != undefined)
        a.value = sum;
}