let elements = {
    radioA: document.getElementById('radioButtonA'),
    radioB: document.getElementById('radioButtonB'),
    fieldsetA: document.getElementById('inputTypeFieldsetA'),
    fieldsetB: document.getElementById('inputTypeFieldsetB'),
    imageA: document.getElementById('schemeImageA'),
    imageB: document.getElementById('schemeImageB'),

    inputsForm: document.getElementById('inputsForm'),

    equalSideLength: document.getElementById('equalSideLength'),
    equalSideLengthErr: document.getElementById('equalSideLengthErr'),
    baseAngle: document.getElementById('baseAngle'),
    baseAngleErr: document.getElementById('baseAngleErr'),
    baseSideLength: document.getElementById('baseSideLength'),
    baseSideLengthErr: document.getElementById('baseSideLengthErr'),
    baseAdjacentAngle: document.getElementById('baseAdjacentAngle'),
    baseAdjacentAngleErr: document.getElementById('baseAdjacentAngleErr'),

    outputsFieldset: document.getElementById('outputsFieldset'),
    outputR: document.getElementById('outputValuesR'),
    outputH: document.getElementById('outputValuesH'),
    outputL: document.getElementById('outputValuesL'),
    calculateButton: document.getElementById('calculateButton'),
    clearButton: document.getElementById('clearButton'),
    outputsTable: document.getElementById('outputsTable')
}
console.log("loaded js!");

let currentModeIsA = true;
let outputFields = {};

let inputsA = {
    l: null,
    angle: null
};

let inputsB = {
    l: null,
    angle: null
};

function deg2rad(degrees) {
    return degrees * (Math.PI / 180);
}

function getCalculations() {
    let heights = [];//base related, side realted
    let lengths = [];// base side
    let radius = 0;
    let baseAngle=0;
    let sideAngle=0;
    if (currentModeIsA) {
        lengths[0]=2*Math.sin(deg2rad(inputsA.angle)/2)*inputsA.l;
        lengths[1]=inputsA.l;
        baseAngle=inputsA.angle;
        sideAngle=(180-baseAngle)/2;
    }
    else {
        lengths[0]=inputsB.l;
        lengths[1]=inputsB.l/(2*Math.cos(deg2rad(inputsB.angle)));
        sideAngle=inputsB.angle;
        baseAngle=180-2*sideAngle;
    }
    radius = Math.sqrt(((2 * lengths[1]) - lengths[0]) / ((2 * lengths[1]) - lengths[0])) * lengths[0] / 2;
    

    heights[0] = lengths[1] * Math.sin(deg2rad(sideAngle));
    heights[1] = lengths[0] * Math.sin(deg2rad(baseAngle));
    return {
        radius: radius,
        heights: heights,
        lengths: lengths
    };
}

function updateCheckboxes() {
    outputFields["radius"] = elements.outputR.checked;
    outputFields["heights"] = elements.outputH.checked;
    outputFields["lengths"] = elements.outputL.checked;
    console.log("output fields:", outputFields)
}

function updateCalculateButton() {
    let ret = false;
    if (currentModeIsA) {
        ret = inputsA["l"] !== null && inputsA["angle"] !== null
    }
    else {
        ret = inputsB["l"] !== null && inputsB["angle"] !== null
    }
    console.log(inputsA, inputsB, ret);
    elements.calculateButton.disabled = !ret;
}

function switchAppearance(selectA) {
    if (selectA) {
        elements.imageA.classList.remove("hidden");
        elements.imageB.classList.add("hidden");
        elements.fieldsetA.classList.remove("hidden");
        elements.fieldsetB.classList.add("hidden");
    }
    else {
        elements.imageA.classList.add("hidden");
        elements.imageB.classList.remove("hidden");
        elements.fieldsetA.classList.add("hidden");
        elements.fieldsetB.classList.remove("hidden");
    }
    updateCalculateButton();
}


function clearInputs() {
    if (currentModeIsA) {
        elements.equalSideLength.value = null;
        elements.baseAngle.value = null;
        inputsA = {
            l: null,
            angle: null
        };
    }
    else {
        inputsB = {
            l: null,
            angle: null
        };
        elements.baseSideLength.value = null;
        elements.baseAdjacentAngle.value = null;
    }
    elements.outputsTable.classList.add("hidden");
}

elements.outputsFieldset.addEventListener('change', function (event) {
    if (event.target.type === 'checkbox') {
        updateCheckboxes();
    }
});

elements.inputsForm.addEventListener('change', function (event) {
    if (event.target.type === 'radio') {
        if (event.target.id[event.target.id.length - 1].toLowerCase() == "a") {
            currentModeIsA = true;
            switchAppearance(true);
            console.log("Switching inputs to A");
        }
        else {
            currentModeIsA = false
            switchAppearance(false);
            console.log("Switching inputs to B");

        }
    } else if (event.target.type === 'number') {
        switch (event.target.id) {
            case "equalSideLength":
                inputsA.l = parseFloat(event.target.value) || 0;
                break;
            case "baseAngle":
                inputsA.angle = parseFloat(event.target.value) || 0;
                break;
            case "baseSideLength":
                inputsB.l = parseFloat(event.target.value) || 0;
                break;
            case "baseAdjacentAngle":
                inputsB.angle = parseFloat(event.target.value) || 0;
                break;
            default:
                console.log(event.target.id)
                break;
        }
        updateCalculateButton();

    }
});

elements.clearButton.addEventListener('click', (event) => {
    event.preventDefault();
    clearInputs()
});


elements.calculateButton.addEventListener('click', (event) => {
    event.preventDefault();
    console.log(getCalculations());
});



// чтобы не сконфузило
updateCheckboxes();
switchAppearance(elements.radioA.checked);