/**
 * Load message bank data into selection dropdowns
 * @param {Function || null} cbOK callback when complete
 */
function load_messagebank(cbOK = null) {
    $("#input_GOP").empty();
    $("#input_GBD").empty();
    $("#input_GFC").empty();
    $("#input_FLD").empty();

    // get messagebank data from server, which contains [FLIGHT_NUMBER]
    let messageData = [...new Set(window.messagebankdata.filter(mb => mb.message_Detail.includes('[FLIGHT_NUMBER]')).map(mb => `${mb.description} [${mb.aNN_ID}]`))];
    messageData.forEach((item) => {
        $("#input_GOP").append($("<option></option>").attr("value", item).text(item));
        $("#input_GBD").append($("<option></option>").attr("value", item).text(item));
        $("#input_GFC").append($("<option></option>").attr("value", item).text(item));
        $("#input_FLD").append($("<option></option>").attr("value", item).text(item));
    });
    if (window.messagebankdata.length > 0) {
        if (cbOK) cbOK();
    }
}

function load_remark_selection() {
    fetchAPI("Settings/FISCode", "GET", {}, null, (okdata) => {

        $("#input_GOP").val(okdata.gop)
        $("#input_GBD").val(okdata.gbd);
        $("#input_GFC").val(okdata.gfc);
        $("#input_FLD").val(okdata.fld);
        $("#input_defaultvoice").val(okdata.defaultvoice);
    }, (errdata) => {
        alert("Error getting FIS codes : " + errdata.message);
    });
}

function Get_OldResultDays(){
    fetchAPI("Settings/OldResultDays", "GET", {}, null, (okdata) => {
        let days = parseInt(okdata.message);
        if(isNaN(days) || days < 0){
            days = 3;
        }
        $("#oldresultdays").val(days);
    }, (errdata) => {
        alert("Error getting Old Result Days : " + errdata.message);
    });
}

function Set_OldResultDays(){
    let days = parseInt($("#oldresultdays").val());
    if(isNaN(days) || days < 0){
        alert("Please enter a valid number of days (0 or more).");
        return;
    }

    fetchAPI("Settings/OldResultDays", "POST", {}, { days: days }, (okdata) => {
        alert("Old Result Days updated successfully.");
    }, (errdata) => {
        alert("Error updating Old Result Days : " + errdata.message);
    });
}

function load_default_voice(){
    $("#input_defaultvoice").empty();
    window.voiceTypes.forEach((voice) => {
        $("#input_defaultvoice").append($("<option></option>").attr("value", voice).text(voice));
    });
}

function ValidLatitude(lat){
    const num = parseFloat(lat);
    return !isNaN(num) && num >= -90 && num <= 90;
}

function ValidLongitude(lon){
    const num = parseFloat(lon);
    return !isNaN(num) && num >= -180 && num <= 180;
}

function ValidTimezone(tz){
    try{
        Intl.DateTimeFormat(undefined, { timeZone: tz });
        return true;
    } catch(e){
        return false;
    }
}

function ValidHHMM(time){
    const regex = /^([01]\d|2[0-3]):([0-5]\d)$/;
    return regex.test(time);
}

/**
 * Check if a date string is valid in DD/MM/YYYY format
 * @param {string} dateStr date to check in DD/MM/YYYY format
 * @returns {boolean} true if valid date in DD/MM/YYYY format, false otherwise
 */
function ValidDateDDMMYYYY(dateStr){
    const regex = /^(0[1-9]|[12][0-9]|3[01])\/(0[1-9]|1[0-2])\/\d{4}$/;
    if (!regex.test(dateStr)) return false;
    const [day, month, year] = dateStr.split('/').map(Number);
    const date = new Date(year, month - 1, day);
    return date.getFullYear() === year && date.getMonth() === month - 1 && date.getDate() === day;
}

function ValidFilePath(path){
    if (typeof path !== 'string' || path.trim() === '') return false;
    // test if ends with .wav or .mp3
    const regex = /\.(wav|mp3)$/i;
    return regex.test(path);
}

function IsEnabled(value){
    // accept "true", "false", true, false, 1, 0
    // detect if value is null or undefined
    if (value === null || value === undefined) return false;
    if (typeof value === 'boolean') return value;
    if (typeof value === 'number') return value === 1;
    if (typeof value === 'string') return value.toLowerCase() === "true" || value === "1";
    return false;
}

/**
 * @typedef {Object} AdzanSetting
 * @property {string} latitude
 * @property {string} longitude
 * @property {string} timezone
 * @property {string} fajar_sound
 * @property {string} dzuhur_sound
 * @property {string} ashar_sound
 * @property {string} maghrib_sound
 * @property {string} isya_sound
 * @property {string} fajar_time
 * @property {string} dzuhur_time
 * @property {string} ashar_time
 * @property {string} maghrib_time
 * @property {string} isya_time
 * @property {boolean} fajar_enable
 * @property {boolean} dzuhur_enable
 * @property {boolean} ashar_enable
 * @property {boolean} maghrib_enable
 * @property {boolean} isya_enable
 */

function Get_AdzanSetting(){
    fetchAPI("Settings/AdzanSetting", "GET", {}, null, 
        /**
         * returned AdzanSetting data
         * @param {AdzanSetting} okdata 
         */
        (okdata) => {
        // text input for latitude, longitude, timezone
        if (ValidLatitude(okdata.latitude)) {
            $('#adzanlatitude').val(okdata.latitude);
        } else {
            $('#adzanlatitude').val("N/A");
        }
        if (ValidLongitude(okdata.longitude)) {
            $('#adzanlongitude').val(okdata.longitude);
        } else {
            $('#adzanlongitude').val("N/A");
        }
        if (ValidTimezone(okdata.timezone)) {
            $('#adzantimezone').val(okdata.timezone);
        } else {
            $('#adzantimezone').val("N/A");
        }
        // text input for adzan sound file for each prayer time
        if (ValidFilePath(okdata.fajar_sound)) {
            $('#fajar .adzanfile').val(okdata.fajar_sound);
        } else {
            $('#fajar .adzanfile').val("N/A");
        }
        if (ValidFilePath(okdata.dzuhur_sound)) {
            $('#dzuhur .adzanfile').val(okdata.dzuhur_sound);
        } else {
            $('#dzuhur .adzanfile').val("N/A");
        }
        if (ValidFilePath(okdata.ashar_sound)) {
            $('#ashar .adzanfile').val(okdata.ashar_sound);
        } else {
            $('#ashar .adzanfile').val("N/A");
        }
        if (ValidFilePath(okdata.maghrib_sound)) {
            $('#maghrib .adzanfile').val(okdata.maghrib_sound);
        } else {
            $('#maghrib .adzanfile').val("N/A");
        }
        if (ValidFilePath(okdata.isya_sound)) {
            $('#isya .adzanfile').val(okdata.isya_sound);
        } else {
            $('#isya .adzanfile').val("N/A");
        }
        // checkbox adzanenable for each prayer time
        $('#fajar .adzanenable').prop('checked', IsEnabled(okdata.fajar_enable));
        $('#dzuhur .adzanenable').prop('checked', IsEnabled(okdata.dzuhur_enable));
        $('#ashar .adzanenable').prop('checked', IsEnabled(okdata.ashar_enable));
        $('#maghrib .adzanenable').prop('checked', IsEnabled(okdata.maghrib_enable));
        $('#isya .adzanenable').prop('checked', IsEnabled(okdata.isya_enable));

        // adzantime for each prayer time
        // if valid HH:MM will set <input type="time"> value, else set to undefined
        if (ValidHHMM(okdata.fajar_time)) {
            $('#fajar .adzantime').val(okdata.fajar_time);
        } else {
            $('#fajar .adzantime').val("");
        }
        if (ValidHHMM(okdata.dzuhur_time)) {
            $('#dzuhur .adzantime').val(okdata.dzuhur_time);
        } else {
            $('#dzuhur .adzantime').val("");
        }
        if (ValidHHMM(okdata.ashar_time)) {
            $('#ashar .adzantime').val(okdata.ashar_time);
        } else {
            $('#ashar .adzantime').val("");
        }
        if (ValidHHMM(okdata.maghrib_time)) {
            $('#maghrib .adzantime').val(okdata.maghrib_time);
        } else {
            $('#maghrib .adzantime').val("");
        }
        if (ValidHHMM(okdata.isya_time)) {
            $('#isya .adzantime').val(okdata.isya_time);
        } else {
            $('#isya .adzantime').val("");
        }
        
    }, (errdata) => {
        alert("Error getting Adzan settings : " + errdata.message);
    });
}

function Set_AdzanSetting(){
    let latitude = $('#adzanlatitude').val();
    if (!ValidLatitude(latitude)){
        alert("Please enter a valid latitude between -90 and 90.");
        return;
    }
    let longitude = $('#adzanlongitude').val();
    if (!ValidLongitude(longitude)){
        alert("Please enter a valid longitude between -180 and 180.");
        return;
    }
    let timezone = $('#adzantimezone').val();
    if (!ValidTimezone(timezone)){
        alert("Please enter a valid timezone.");
        return;
    }
    let fajar_sound = $('#fajar .adzanfile').val();
    if (!ValidFilePath(fajar_sound)){
        alert("Please enter a valid file path for Fajar adzan sound (must end with .wav or .mp3).");
        return;
    }
    let dzuhur_sound = $('#dzuhur .adzanfile').val();
    if (!ValidFilePath(dzuhur_sound)){
        alert("Please enter a valid file path for Dzuhur adzan sound (must end with .wav or .mp3).");
        return;
    }
    let ashar_sound = $('#ashar .adzanfile').val();
    if (!ValidFilePath(ashar_sound)){
        alert("Please enter a valid file path for Ashar adzan sound (must end with .wav or .mp3).");
        return;
    }
    let maghrib_sound = $('#maghrib .adzanfile').val();
    if (!ValidFilePath(maghrib_sound)){
        alert("Please enter a valid file path for Maghrib adzan sound (must end with .wav or .mp3).");
        return;
    }
    let isya_sound = $('#isya .adzanfile').val();
    if (!ValidFilePath(isya_sound)){
        alert("Please enter a valid file path for Isya adzan sound (must end with .wav or .mp3).");
        return;
    }
    let fajar_enable = $('#fajar .adzanenable').prop('checked');
    let dzuhur_enable = $('#dzuhur .adzanenable').prop('checked');
    let ashar_enable = $('#ashar .adzanenable').prop('checked');
    let maghrib_enable = $('#maghrib .adzanenable').prop('checked');
    let isya_enable = $('#isya .adzanenable').prop('checked');
    let fajar_time = $('#fajar .adzantime').val();
    if (!ValidHHMM(fajar_time)){
        alert("Please enter a valid time for Fajar adzan (HH:MM).");
        return;
    }
    let dzuhur_time = $('#dzuhur .adzantime').val();
    if (!ValidHHMM(dzuhur_time)){
        alert("Please enter a valid time for Dzuhur adzan (HH:MM).");
        return;
    }
    let ashar_time = $('#ashar .adzantime').val();
    if (!ValidHHMM(ashar_time)){
        alert("Please enter a valid time for Ashar adzan (HH:MM).");
        return;
    }
    let maghrib_time = $('#maghrib .adzantime').val();
    if (!ValidHHMM(maghrib_time)){
        alert("Please enter a valid time for Maghrib adzan (HH:MM).");
        return;
    }
    let isya_time = $('#isya .adzantime').val();
    if (!ValidHHMM(isya_time)){
        alert("Please enter a valid time for Isya adzan (HH:MM).");
        return;
    }

    /**
     * @type {AdzanSetting}
     */
    let data = {
        latitude: latitude,
        longitude: longitude,
        timezone: timezone,
        fajar_sound: fajar_sound,
        dzuhur_sound: dzuhur_sound,
        ashar_sound: ashar_sound,
        maghrib_sound: maghrib_sound,
        isya_sound: isya_sound,
        fajar_enable: fajar_enable,
        dzuhur_enable: dzuhur_enable,
        ashar_enable: ashar_enable,
        maghrib_enable: maghrib_enable,
        isya_enable: isya_enable,
        fajar_time: fajar_time,
        dzuhur_time: dzuhur_time,
        ashar_time: ashar_time,
        maghrib_time: maghrib_time,
        isya_time: isya_time
    };
    fetchAPI("Settings/AdzanSetting", "POST", {}, data, (okdata) => {
        alert("Adzan settings updated successfully.");
    }, (errdata) => {
        alert("Error updating Adzan settings : " + errdata.message);
    });
}



function Get_WebAccessSetting(){
    fetchAPI("Settings/WebAccess", "GET", {}, null, (okdata) => {
        let adminpass = okdata.adminpass || "password";
        let viewerpass = okdata.userpass || "password";
        $("#adminpassword1").val(adminpass);
        $("#adminpassword2").val(adminpass);
        $("#viewerpassword1").val(viewerpass);
        $("#viewerpassword2").val(viewerpass);
    }, (errdata) => {
        alert("Error getting Web Access settings : " + errdata.message);
    });
}

function Set_WebAccessSetting(){
    let adminpass1 = $("#adminpassword1").val();
    let adminpass2 = $("#adminpassword2").val();
    let viewerpass1 = $("#viewerpassword1").val();
    let viewerpass2 = $("#viewerpassword2").val();
    if(adminpass1 !== adminpass2){
        alert("Admin passwords do not match.");
        return;
    }
    if(viewerpass1 !== viewerpass2){
        alert("Viewer passwords do not match.");
        return;
    }
    let data = {
        adminpass: adminpass1,
        viewerpass: viewerpass1
    };
    fetchAPI("Settings/WebAccess", "POST", {}, data, (okdata) => {
        alert("Web Access settings updated successfully.");
    }, (errdata) => {
        alert("Error updating Web Access settings : " + errdata.message);
    });
}

$(document).ready(function () {
    console.log("setting.js loaded");
    load_default_voice();
    Get_OldResultDays();
    Get_WebAccessSetting();
    Get_AdzanSetting();
    load_messagebank(() => load_remark_selection());

    $('#fiscodesave').click(function () {
        Set_OldResultDays();
        let gop = $("#input_GOP").val();
        let gbd = $("#input_GBD").val();
        let gfc = $("#input_GFC").val();
        let fld = $("#input_FLD").val();
        let voice = $("#input_defaultvoice").val();
        if (gop && gbd && gfc && fld && voice) {
            let data = {
                GOP: gop,
                GBD: gbd,
                GFC: gfc,
                FLD: fld,
                defaultvoice: voice
            };
            fetchAPI("Settings/FISCode", "POST", {}, data, (okdata) => {
                alert("FIS codes saved successfully.");
            }, (errdata) => {
                alert("Error saving FIS codes : " + errdata.message);
            });
        } else {
            alert("Please select all FIS codes (GOP, GBD, GFC, FLD) and Default Voice before saving.");
        }
    });
    $('#webaccesssave').click(function () {
         Set_WebAccessSetting();
    });
    
    $('#adzansave').click(function () {
        Set_AdzanSetting();
    });

    

});