var canvasEditions = [];
(async function () {

const cache = await caches.open('pdf');
var responsePdf = await cache.match(url);
var pdfBlob = await responsePdf.blob();
url = await URL.createObjectURL(pdfBlob);

var dataTransfer = new DataTransfer();
dataTransfer.items.add(new File([pdfBlob], filename, {
    type: 'application/pdf'
}));
document.getElementById('input_pdf').files = dataTransfer.files;

fabric.Textbox.prototype._wordJoiners = /[]/;

// Loaded via <script> tag, create shortcut to access PDF.js exports.
var pdfjsLib = window['pdfjs-dist/build/pdf'];

// The workerSrc property shall be specified.
pdfjsLib.GlobalWorkerOptions.workerSrc = '/vendor/pdf.worker.js?legacy';

// Asynchronous download of PDF
var loadingTask = pdfjsLib.getDocument(url);
loadingTask.promise.then(function(pdf) {

    if(pdf.numPages > maxPage) {
        alert("Le PDF de doit pas dépasser "+maxPage+" pages");
        document.location = "/";
        return;
    }

    var is_mobile = function() {
        return !(window.getComputedStyle(document.getElementById('is_mobile')).display === "none");
    }
    var fontCaveat = null;
    var addLock = forceAddLock;
    var forceAddLock = !is_mobile();
    var copiedObject = null;
    var activeCanvas = null;
    var activeCanvasPointer = null;
    var pdfRenderTasks = [];
    var pdfPages = [];
    var svgCollections = [];
    var resizeTimeout;
    var pdfHistory = {};
    var currentScale = 1.5;
    var windowWidth = window.innerWidth;
    var menu = document.getElementById('offcanvasTop')
    var menuOffcanvas = new bootstrap.Offcanvas(menu)
    var currentCursor = null;

    if(localStorage.getItem('pdfHistory')) {
        pdfHistory = JSON.parse(localStorage.getItem('pdfHistory'));
    }

    var responsiveDisplay = function() {
        if(is_mobile()) {
            document.body.style.paddingRight = "";
            menu.classList.remove('show');
            menuOffcanvas.hide();
            document.getElementById('container-pages').classList.remove('vh-100');
        } else {
            menuOffcanvas.show();
            document.body.style.paddingRight = "350px";
            document.getElementById('container-pages').classList.add('vh-100');
        }
        menu.classList.remove('d-md-block');
        menu.classList.remove('d-none');
    }

    responsiveDisplay();

    if(localStorage.getItem('svgCollections')) {
        svgCollections = JSON.parse(localStorage.getItem('svgCollections'));
    }

    var storeCollections = function () {
        localStorage.setItem('svgCollections', JSON.stringify(svgCollections));
    }

    var getSvgItem = function(svg) {
        for (index in svgCollections) {
            svgItem = svgCollections[index];
            if(svgItem.svg == svg) {

                return svgItem;
            }
        }

        return null;
    }

    opentype.load('/vendor/fonts/Caveat-Regular.ttf', function(err, font) {
        fontCaveat = font;
    });

    var svgClick = function(label, event) {
        if(event.detail == 1) {
            label.dataset.lock = parseInt(addLock*1);
        }
        if(event.detail > 1){
            stateAddLock(parseInt(label.dataset.lock*1) != 1);
        }
        if(event.detail > 1) {
            return;
        }
        if(!document.getElementById(label.htmlFor)) {
            return;
        }
        if(!document.getElementById(label.htmlFor).checked) {
            return;
        }
        document.getElementById(label.htmlFor).checked = false;
        document.getElementById(label.htmlFor).dispatchEvent(new Event("change"));
        event.preventDefault();
    }

    var svgDblClick = function(label, event) {
        if(parseInt(label.dataset.lock*1) == 1) {
            return;
        }
        stateAddLock(true);
    }

    var svgDragStart = function(label, event) {
        document.getElementById(label.htmlFor).checked = true;
        document.getElementById(label.htmlFor).dispatchEvent(new Event("change"));
    }

    var svgChange = function(input, event) {
        if(input.checked) {
            document.getElementById('btn_svn_select').classList.add('d-none');
            document.getElementById('svg_object_actions').classList.add('d-none');
            document.getElementById('svg_selected_container').classList.remove('d-none');
            document.getElementById('svg_selected').src = input.value;
        } else {
            document.getElementById('btn_svn_select').classList.remove('d-none');
            document.getElementById('svg_object_actions').classList.add('d-none');
            document.getElementById('svg_selected_container').classList.add('d-none');
            document.getElementById('svg_selected').src = "";
        }

        stateAddLock(false);

        var input_selected = document.querySelector('input[name="svg_2_add"]:checked');

        if(input_selected && !input_selected.value.match(/^data:/) && input_selected.value != "text") {
            input_selected = null;
        }

        document.querySelectorAll('.btn-svg').forEach(function(item) {
            if(input_selected && item.htmlFor == input_selected.id) {
                item.style.setProperty('cursor', 'copy');
            } else {
                item.style.removeProperty('cursor');
            }
        });

        canvasEditions.forEach(function(canvasEdition, index) {
            if(input_selected) {
                canvasEdition.defaultCursor = 'copy';
            } else {
                canvasEdition.defaultCursor = 'default';
            }
        })
        if(is_mobile()) {
            menuOffcanvas.hide();
        }
    }

    var getHtmlSvg = function(svg, i) {
        var inputRadio = document.createElement('input');
        inputRadio.type = "radio";
        inputRadio.classList.add("btn-check");
        inputRadio.id="radio_svg_"+i;
        inputRadio.name = "svg_2_add";
        inputRadio.autocomplete = "off";
        inputRadio.value = svg.svg;
        inputRadio.addEventListener('change', function() {
            svgChange(this, event);
        });
        var svgButton = document.createElement('label');
        svgButton.id = "label_svg_"+i;
        svgButton.classList.add('position-relative');
        svgButton.classList.add('btn');
        svgButton.classList.add('btn-svg');
        svgButton.classList.add('btn-outline-secondary');
        svgButton.htmlFor = "radio_svg_"+i;
        if(svg.type == 'signature') {
            svgButton.innerHTML += '<i class="bi bi-vector-pen text-black align-middle float-start"></i>';
        }
        if(svg.type == 'initials') {
            svgButton.innerHTML += '<i class="bi bi-type text-black align-middle float-start"></i>';
        }
        if(svg.type == 'rubber_stamber') {
            svgButton.innerHTML += '<i class="bi bi-card-text text-black align-middle float-start"></i>';
        }
        if(svg.type) {
            document.querySelector('.btn-add-svg-type[data-type="'+svg.type+'"]').classList.add('d-none');
        }
        svgButton.innerHTML += '<a title="Supprimer" data-index="'+i+'" class="btn-svg-list-suppression opacity-50 link-dark position-absolute" style="right: 6px; top: 2px;"><i class="bi bi-trash"></i></a>';
        svgButton.draggable = true;
        svgButton.addEventListener('dragstart', function(event) {
            svgDragStart(this, event);
        });
        svgButton.addEventListener('click', function(event) {
            svgClick(this, event);
        });
        svgButton.addEventListener('dblclick', function(event) {
            svgDblClick(this, event);
        });
        svgButton.addEventListener('mouseout', function(event) {
            this.style.removeProperty('cursor');
        })
        var svgImg = document.createElement('img');
        svgImg.src = svg.svg;
        svgImg.draggable = false;
        svgImg.style = "max-width: 180px;max-height: 70px;";
        svgButton.appendChild(svgImg);
        var svgContainer = document.createElement('div');
        svgContainer.classList.add('d-grid');
        svgContainer.classList.add('gap-2');
        svgContainer.appendChild(inputRadio);
        svgContainer.appendChild(svgButton);

        return svgContainer;
    }

    document.getElementById('add-lock-checkbox').addEventListener('change', function() {
        stateAddLock(this.checked);
    });

    var stateAddLock = function(state) {
        if(forceAddLock) {
            state = true;
        }
        var checkbox = document.getElementById('add-lock-checkbox');
        var input_selected = document.querySelector('input[name="svg_2_add"]:checked');

        addLock = state;

        if(!input_selected) {
            addLock = false;
            checkbox.disabled = true;
        } else {
            checkbox.disabled = false;
        }

        /*document.querySelectorAll('.btn-svg').forEach(function(item) {
            item.style.borderWidth = "1px";
        });*/

        if(addLock && input_selected) {
            var svgButton = document.querySelector('.btn-svg[for="'+input_selected.id+'"]');
            //svgButton.style.borderWidth = "2px";
            checkbox.checked = true;
            return;
        }

        checkbox.checked = false;
    }

    var displaysSVG = function() {
        document.getElementById('svg_list').innerHTML = "";
        document.getElementById('svg_list_signature').innerHTML = "";
        document.getElementById('svg_list_initials').innerHTML = "";
        document.getElementById('svg_list_rubber_stamber').innerHTML = "";
        document.querySelectorAll('.btn-add-svg-type').forEach(function(item) {
            item.classList.remove('d-none');
        });
        svgCollections.forEach((svg, i) => {
            var svgHtmlChild = getHtmlSvg(svg, i);
            if(svg.type) {
                document.getElementById('svg_list_'+svg.type).appendChild(svgHtmlChild);
                return;
            }
            document.getElementById('svg_list').appendChild(svgHtmlChild);
        });

        if(svgCollections.length > 0) {
            document.getElementById('btn-add-svg').classList.add('btn-light');
            document.getElementById('btn-add-svg').classList.remove('btn-primary');
        }

        if(document.getElementById('btn-add-svg').classList.contains('btn-primary')) {
            document.getElementById('btn-add-svg').focus();
        }

        document.querySelectorAll('.btn-svg-list-suppression').forEach(function(item) {
            item.addEventListener('click', function() {
                svgCollections.splice(this.dataset.index, 1);
                displaysSVG();
                storeCollections();
            });
        });
    }

    document.querySelectorAll('.btn-add-svg-type').forEach(function(item) {
        item.addEventListener('click', function(event) {
            document.getElementById('input-svg-type').value = this.dataset.type;
            if(this.dataset.modalnav) {
                bootstrap.Tab.getOrCreateInstance(document.querySelector('#modalAddSvg #nav-tab '+this.dataset.modalnav)).show();
            }
        });
    });

    document.querySelectorAll('label.btn-svg').forEach(function(item) {
        item.addEventListener('dragstart', function(event) {
            svgDragStart(this, event);
        });
        item.addEventListener('click', function(event) {
            svgClick(this, event);
        });
        item.addEventListener('dblclick', function(event) {
            svgDblClick(this, event);
        });
    });

    document.querySelectorAll('input[name="svg_2_add"]').forEach(function (item) {
        item.addEventListener('change', function(event) {
            svgChange(this, event);
        });
    });

    displaysSVG();
    stateAddLock();

    document.getElementById('btn_modal_ajouter').addEventListener('click', function() {
        var svgItem = {};
        if(document.getElementById('input-svg-type').value) {
            svgItem.type = document.getElementById('input-svg-type').value;
        }
        if(document.getElementById('nav-draw-tab').classList.contains('active')) {
            svgItem.svg = document.getElementById('img-upload').src;
        }
        if(document.getElementById('nav-type-tab').classList.contains('active')) {
            var fontPath = fontCaveat.getPath(document.getElementById('input-text-signature').value, 0, 0, 42);
            var fabricPath = new fabric.Path(fontPath.toPathData());
            fabricPath.top = 0;
            fabricPath.left = 0;
            fabricPath.height = fabricPath.getScaledHeight();
            var textCanvas = document.createElement('canvas');
            textCanvas.width = fabricPath.getScaledWidth();
            textCanvas.height = fabricPath.getScaledHeight();
            var textCanvas = new fabric.Canvas(textCanvas);
            textCanvas.add(fabricPath).renderAll();
            svgItem.svg = svgToDataUrl(textCanvas.toSVG());
        }
        if(document.getElementById('nav-import-tab').classList.contains('active')) {
            svgItem.svg = document.getElementById('img-upload').src;
        }
        svgCollections.push(svgItem);
        displaysSVG();
        localStorage.setItem('svgCollections', JSON.stringify(svgCollections));

        var svg_list_id = "svg_list";
        if(svgItem.type) {
            svg_list_id = svg_list_id + "_" + svgItem.type;
        }

        document.querySelector('#'+svg_list_id+' label:last-child').click();
    });

    function dataURLtoBlob(dataurl) {
        var arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1],
            bstr = atob(arr[1]), n = bstr.length, u8arr = new Uint8Array(n);
        while(n--){
            u8arr[n] = bstr.charCodeAt(n);
        }
        return new Blob([u8arr], {type:mime});
    }

    function svgToDataUrl(svg) {

        return "data:image/svg+xml;base64,"+btoa(svg);
    }

    function trimSvgWhitespace(svgContent) {
        if(!svgContent) {

            return null;
        }
        var svgContainer = document.createElement("div")
        svgContainer.classList.add('invisible');
        svgContainer.classList.add('position-absolute');
        svgContainer.classList.add('top-0');
        svgContainer.classList.add('start-0');
        svgContainer.style = "z-index: -1;";
        svgContainer.innerHTML = svgContent;
        document.body.appendChild(svgContainer);
        var svg = svgContainer.querySelector('svg');
        var box = svg.getBBox();
        svg.setAttribute("viewBox", [box.x, box.y, box.width, box.height].join(" "));
        svgContent = svgContainer.innerHTML;
        document.body.removeChild(svgContainer)

        return svgContent = svgContainer.innerHTML;
    }

    var signaturePad = new SignaturePad(document.getElementById('signature-pad'), {
        penColor: 'rgb(0, 0, 0)',
        minWidth: 1.25,
        maxWidth: 2,
        throttle: 0,
        onEnd: function() {
            const file = new File([dataURLtoBlob(signaturePad.toDataURL())], "draw.png", {
                type: 'image/png'
            });
            var data = new FormData();
            data.append('file', file);
            uploadSVG(data);
        }
    });

    document.getElementById('signature-pad-reset').addEventListener('click', function(event) {
        signaturePad.clear();
        event.preventDefault();
    })

    document.querySelectorAll('#modalAddSvg .nav-link').forEach(function(item) { item.addEventListener('shown.bs.tab', function (event) {
        var firstInput = document.querySelector(event.target.dataset.bsTarget).querySelector('input');
        if(firstInput) {
            firstInput.focus();
        }
    })});

    document.getElementById('modalAddSvg').addEventListener('shown.bs.modal', function (event) {
        document.querySelector('#modalAddSvg #nav-tab button:first-child').focus();
        var tab = document.querySelector('#modalAddSvg .tab-pane.active');
        if(tab.querySelector('input')) {
            tab.querySelector('input').focus();
        }
        var input_selected = document.querySelector('input[name="svg_2_add"]:checked');
        if(input_selected) {
            input_selected.checked = false;
            input_selected.dispatchEvent(new Event("change"));
        }
    })

    document.getElementById('modalAddSvg').addEventListener('hidden.bs.modal', function (event) {
        signaturePad.clear();
        document.getElementById('btn_modal_ajouter').setAttribute('disabled', 'disabled');
        document.getElementById('input-svg-type').value = null;
        document.getElementById('input-text-signature').value = null;
        document.getElementById('input-image-upload').value = null;
        document.getElementById('img-upload').src = "";
        document.getElementById('img-upload').classList.add("d-none");
        bootstrap.Tab.getOrCreateInstance(document.querySelector('#modalAddSvg #nav-tab button:first-child')).show();
    })

    document.getElementById('input-text-signature').addEventListener('keydown', function(event) {
        document.getElementById('btn_modal_ajouter').removeAttribute('disabled');
        if(event.key == 'Enter') {
            document.getElementById('btn_modal_ajouter').click()
        }
    })

    document.getElementById('input-image-upload').addEventListener('change', function(event) {
        var data = new FormData();
        data.append('file', document.getElementById('input-image-upload').files[0]);
        uploadSVG(data);
        event.preventDefault();
    });

    var uploadSVG = function(formData) {
        document.getElementById('btn_modal_ajouter').setAttribute('disabled', 'disabled');
        document.getElementById('btn_modal_ajouter_spinner').classList.remove('d-none');
        document.getElementById('btn_modal_ajouter_check').classList.add('d-none');

        xhr = new XMLHttpRequest();

        xhr.open( 'POST', document.getElementById('form-image-upload').action, true );
        xhr.onreadystatechange = function () {
            var svgImage = svgToDataUrl(trimSvgWhitespace(this.responseText));
            document.getElementById('img-upload').src = svgImage;
            document.getElementById('img-upload').classList.remove("d-none");
            document.getElementById('btn_modal_ajouter').removeAttribute('disabled');
            document.getElementById('btn_modal_ajouter_spinner').classList.add('d-none');
            document.getElementById('btn_modal_ajouter_check').classList.remove('d-none');
            document.getElementById('btn_modal_ajouter').focus();
        };
        xhr.send( formData );
    }

    document.getElementById('save').addEventListener('click', function(event) {
        var dataTransfer = new DataTransfer();
        canvasEditions.forEach(function(canvasEdition, index) {
            dataTransfer.items.add(new File([dataURLtoBlob(svgToDataUrl(canvasEdition.toSVG()))], index+'.svg', {
                type: 'image/svg+xml'
            }));
        })
        document.getElementById('input_svg').files = dataTransfer.files;
    });

    document.getElementById('save_mobile').addEventListener('click', function(event) {
        document.getElementById('save').click();
    });

    document.getElementById('btn-svg-pdf-delete').addEventListener('click', function(event) {
        deleteActiveObject();
    });

    document.addEventListener('click', function(event) {
        if(event.target.nodeName == "DIV") {

            var input_selected = document.querySelector('input[name="svg_2_add"]:checked');
            if(!input_selected) {
                return;
            }
            stateAddLock(false);
            input_selected.checked = false;
            input_selected.dispatchEvent(new Event("change"));
        }
    });

    var deleteActiveObject = function() {
        canvasEditions.forEach(function(canvasEdition, index) {
            canvasEdition.getActiveObjects().forEach(function(activeObject) {
                canvasEdition.remove(activeObject);
            });
        })
    }

    document.addEventListener('keydown', function(event) {
        if(event.key == 'Escape' && (event.target.tagName == "BODY" || event.target.name == "svg_2_add")) {
            var input_selected = document.querySelector('input[name="svg_2_add"]:checked');
            if(!input_selected) {
                return;
            }
            input_selected.checked = false;
            stateAddLock(false);
            input_selected.dispatchEvent(new Event("change"));
            input_selected.blur();
            return;
        }
        if(event.target.tagName != "BODY") {
            return;
        }
        if(event.key == 'Delete') {
            deleteActiveObject();
            return;
        }

        if(event.ctrlKey && event.key == 'c') {
            if(!activeCanvas || !activeCanvas.getActiveObject()) {
                return;
            }
            copiedObject = fabric.util.object.clone(activeCanvas.getActiveObject());

            return;
        }

        if(event.ctrlKey && event.key == 'v') {
            copiedObject = fabric.util.object.clone(copiedObject);
            copiedObject.left = activeCanvasPointer.x;
            copiedObject.top = activeCanvasPointer.y;
            activeCanvas.add(copiedObject).renderAll();
            return;
        }

        if(event.ctrlKey && (event.key == 'à' || event.key == '0')) {
            autoZoom();
            event.preventDefault() && event.stopPropagation();

            return;
        }
        if(event.ctrlKey && (event.key == '=' || event.key == '+')) {
            zoomChange(1);
            event.preventDefault() && event.stopPropagation();

            return;
        }
        if(event.ctrlKey && event.key == '-') {
            zoomChange(-1);
            event.preventDefault() && event.stopPropagation();

            return;
        }
    });

    var addObjectInCanvas = function(canvas, item) {
        item.on('selected', function(event) {
            if(!is_mobile()) {
                return;
            }
            document.getElementById('svg_object_actions').classList.remove('d-none');
            document.getElementById('btn_svn_select').classList.add('d-none');
        });

        item.on('deselected', function(event) {
            if(!is_mobile()) {
                return;
            }
            document.getElementById('btn_svn_select').classList.remove('d-none');
            document.getElementById('svg_object_actions').classList.add('d-none');
        });

        return canvas.add(item);
    }

    var createAndAddSvgInCanvas = function(canvas, item, x, y) {
        save.removeAttribute('disabled');
        save_mobile.removeAttribute('disabled');

        if(item == 'text') {
            var textbox = new fabric.Textbox('Texte à modifier', {
            left: x,
            top: y - 20,
            fontSize: 20,
            fontFamily: 'Monospace'
          });

          addObjectInCanvas(canvas, textbox).setActiveObject(textbox);
          textbox.keysMap[13] = "exitEditing";
          textbox.lockScalingFlip = true;
          textbox.enterEditing();
          textbox.selectAll();


          return;
        }

        fabric.loadSVGFromURL(item, function(objects, options) {
            var svg = fabric.util.groupSVGElements(objects, options);
            svg.svgOrigin = item;
            svg.lockScalingFlip = true;
            svg.scaleToHeight(100);
            if(svg.getScaledWidth() > 200) {
                svg.scaleToWidth(200);
            }
            var svgItem = getSvgItem(item);
            if(svgItem && svgItem.scale) {
                svg.scaleToWidth(canvas.width * svgItem.scale);
            }
            svg.top = y - (svg.getScaledHeight() / 2);
            svg.left = x - (svg.getScaledWidth() / 2);

            addObjectInCanvas(canvas, svg);
        });
    }

    window.addEventListener('resize', function(event) {
        event.preventDefault() && event.stopPropagation();
        if(windowWidth == window.innerWidth) {
            return;
        }
        responsiveDisplay();
        windowWidth = window.innerWidth;
        autoZoom();
    });
    document.addEventListener('wheel', function(event) {
        if(!event.ctrlKey) {
            return;
        }
        event.preventDefault() && event.stopPropagation();

        if(event.deltaY > 0) {
            zoomChange(-1)
        } else {
            zoomChange(1)
        }
    }, { passive: false });

    document.getElementById('btn-zoom-decrease').addEventListener('click', function() {
        zoomChange(-1)
    });
    document.getElementById('btn-zoom-increase').addEventListener('click', function() {
        zoomChange(1)
    });

    var autoZoom = function() {
        clearTimeout(resizeTimeout);
        resizeTimeout = setTimeout(resizePDF, 100);
    }

    var zoomChange = function (inOrOut) {
        if(resizeTimeout) {
            return;
        }

        var deltaScale = 0.2 * inOrOut;

        if(currentScale + deltaScale < 0) {
            return
        }
        if(currentScale + deltaScale > 3) {
            return
        }

        clearTimeout(resizeTimeout);
        currentScale += deltaScale;

        resizeTimeout = setTimeout(resizePDF(currentScale), 50);
    }

    var resizePDF = function (scale = 'auto') {
        renderComplete = true;
        pdfRenderTasks.forEach(function(renderTask) {
            if(!renderTask) {
                renderComplete = false;
            }
        });

        if(!renderComplete) {
            clearTimeout(resizeTimeout);
            resizeTimeout = setTimeout(function(){ resizePDF(scale) }, 50);
            return;
        }

        pdfPages.forEach(function(page, pageIndex) {
            var renderTask = pdfRenderTasks[pageIndex];

            if(scale == 'auto' && page.getViewport({scale: 1.5}).width > document.getElementById('container-pages').clientWidth - 40) {
                scale = (document.getElementById('container-pages').clientWidth - 40) / page.getViewport({scale: 1}).width;
            }

            if(scale == 'auto') {
                scale = 1.5;
            }

            var viewport = page.getViewport({scale: scale});
            currentScale = scale;

            var canvasPDF = document.getElementById('canvas-pdf-' + pageIndex);
            var context = canvasPDF.getContext('2d');
            canvasPDF.height = viewport.height;
            canvasPDF.width = viewport.width;
            canvasEdition = canvasEditions[pageIndex];

            var scaleMultiplier = canvasPDF.width / canvasEdition.width;
            var objects = canvasEdition.getObjects();
            for (var i in objects) {
               objects[i].scaleX = objects[i].scaleX * scaleMultiplier;
               objects[i].scaleY = objects[i].scaleY * scaleMultiplier;
               objects[i].left = objects[i].left * scaleMultiplier;
               objects[i].top = objects[i].top * scaleMultiplier;
               objects[i].setCoords();
            }

            canvasEdition.setWidth(canvasEdition.getWidth() * scaleMultiplier);
            canvasEdition.setHeight(canvasEdition.getHeight() * scaleMultiplier);
            canvasEdition.renderAll();
            canvasEdition.calcOffset();

            var renderContext = {
              canvasContext: context,
              viewport: viewport,
              enhanceTextSelection: true
            };
            renderTask.cancel();
            pdfRenderTasks[pageIndex] = null;
            renderTask = page.render(renderContext);
            renderTask.promise.then(function () {
                pdfRenderTasks[pageIndex] = renderTask;
                clearTimeout(resizeTimeout);
                resizeTimeout = null;
            });
        });
    }

    for(var pageNumber = 1; pageNumber <= pdf.numPages; pageNumber++ ) {
        pdf.getPage(pageNumber).then(function(page) {
          var scale = 1.5;
          var viewport = page.getViewport({scale: scale});
          if(viewport.width > document.getElementById('container-pages').clientWidth - 40) {
              viewport = page.getViewport({scale: 1});
              scale = (document.getElementById('container-pages').clientWidth - 40) / viewport.width;
              viewport = page.getViewport({ scale: scale });
          }

          currentScale = scale;

          var pageIndex = page.pageNumber - 1;

          document.getElementById('form_pdf').insertAdjacentHTML('beforeend', '<input name="svg[' + pageIndex + ']" id="data-svg-' + pageIndex + '" type="hidden" value="" />');
          document.getElementById('container-pages').insertAdjacentHTML('beforeend', '<div class="position-relative mt-1 ms-1 me-1 d-inline-block" id="canvas-container-' + pageIndex +'"><canvas id="canvas-pdf-'+pageIndex+'" class="shadow-sm canvas-pdf"></canvas><div class="position-absolute top-0 start-0"><canvas id="canvas-edition-'+pageIndex+'"></canvas></div></div>');

          var canvasPDF = document.getElementById('canvas-pdf-' + pageIndex);
          var canvasEditionHTML = document.getElementById('canvas-edition-' + pageIndex);
          // Prepare canvas using PDF page dimensions
          var context = canvasPDF.getContext('2d');
          canvasPDF.height = viewport.height;
          canvasPDF.width = viewport.width;
          canvasEditionHTML.height = canvasPDF.height;
          canvasEditionHTML.width = canvasPDF.width;

          var renderContext = {
            canvasContext: context,
            viewport: viewport,
            enhanceTextSelection: true
          };
          var renderTask = page.render(renderContext);
          pdfRenderTasks.push(renderTask);
          pdfPages.push(page);
          var canvasEdition = new fabric.Canvas('canvas-edition-' + pageIndex, {
            selection : false,
            allowTouchScrolling: true
          });

          document.getElementById('canvas-container-' + pageIndex).addEventListener('drop', function(event) {
              var input_selected = document.querySelector('input[name="svg_2_add"]:checked');
              if(!input_selected) {
                  return;
              }

              createAndAddSvgInCanvas(canvasEdition, input_selected.value, event.layerX, event.layerY);
              input_selected.checked = false;
              input_selected.dispatchEvent(new Event("change"));
          });
          canvasEdition.on('mouse:move', function(event) {
              activeCanvas = this;
              activeCanvasPointer = event.pointer;
          });
          canvasEdition.on('mouse:down:before', function(event) {
              currentCursor = this.defaultCursor;
          });
          canvasEdition.on('mouse:down', function(event) {
              if(event.target) {
                  this.defaultCursor = 'default';
                  return;
              }
              var input_selected = document.querySelector('input[name="svg_2_add"]:checked');
              if(currentCursor == 'default' && input_selected) {
                   this.defaultCursor = 'copy';
              }
              if(currentCursor != 'copy') {
                  return;
              }
              if(!input_selected) {
                  return;
              }

              createAndAddSvgInCanvas(this, input_selected.value, event.pointer.x, event.pointer.y);

              if(addLock) {
                  return;
              }
              input_selected.checked = false;
              input_selected.dispatchEvent(new Event("change"));
          });
          canvasEdition.on('object:scaling', function(event) {
              if(event.transform.action == "scaleX") {
                  event.target.scaleY = event.target.scaleX;
              }
              if(event.transform.action == "scaleY") {
                  event.target.scaleX = event.target.scaleY;
              }
          });
          canvasEdition.on('object:scaled', function(event) {
              var item = getSvgItem(event.target.svgOrigin);
              if(!item) {
                  return;
              }
              item.scale = event.target.width * event.target.scaleX / event.target.canvas.width;
              storeCollections();
          });
          canvasEdition.on("text:changed", function(event) {
               if (!event.target instanceof fabric.IText) {
                   return;
               }
              const textLinesMaxWidth = event.target.textLines.reduce((max, _, i) => Math.max(max, event.target.getLineWidth(i)), 0);
              event.target.set({width: textLinesMaxWidth});
          });
          canvasEditions.push(canvasEdition);
        });
    }
    }, function (reason) {
    console.error(reason);
});
})();