var pat = null;
var directLaunch = false;


function enableDownload(downloadStudy) {
    $.post("DwnStudyConfig.do", {
        'action': 'READ'
    }, function(data) {
        if (data.trim() == "Yes") {
            downloadStudy.style.display = "block";
        } else {
            downloadStudy.style.display = "none";
        }
    }, 'text');
}

function loadViewerPage() {
    initPage();
    $("#toolbarContainer").load("viewer_tools.html");
}

function getStudyDetails() {
    pat = $.cookies.get('patient');
    var queryString = document.location.search.substring(1);
    var patId = getParameter(queryString, "patientID");
    var studyId = getParameter(queryString, "studyUID");
    var serverName = getParameter(queryString, "serverName");
    if (serverName == 'null') {
        serverName = '';
    }
    if (patId == 'null') {
        patId = '';
    }
    if (studyId == 'null') {
        studyId = '';
    }

    if (patId != null && studyId != null && serverName != null) {
        $.post("StudyInfo.do", {
            "patientID": patId,
            "studyUID": studyId,
            "serverName": serverName
        }, function(data) {
            if (data['error'] != null) {
                if (data['error'].trim() == 'Server not found') {
                    alert("Server not found!!!");
                    return;
                }
            }
            directLaunch = true;
            pat = data;
            loadStudy();
        }, "json");
    } else {
        loadStudy();
    }
}

function isCompatible() {
    return !!(window.requestFileSystem || window.webkitRequestFileSystem);
}

function saveJpgImages() {
    if (isCompatible()) {
        window.requestFileSystem = window.requestFileSystem ||
            window.webkitRequestFileSystem;
        var secondTR = $('.seriesTable');
        secondTR.find('img').each(function() {
            if (this.complete) {
                saveLocally(this);
            } else {
                this.onload = function() {
                    saveLocally(this);
                };
            }

        });
    }
}

function saveLocally(image) {
    var cvs = document.createElement('canvas');
    var ctx = cvs.getContext("2d");

    var fn = '';
    if (image.src.indexOf('images/pdf.png') >= 0) {
        fn = getParameter($(image).attr('imgSrc'), 'object') + '.pdf';
    } else {
        fn = getParameter(image.src, 'object') + '.jpg';
    }
    cvs.width = image.naturalWidth;
    cvs.height = image.naturalHeight;
    ctx.drawImage(image, 0, 0);

    if (image.src.indexOf('images/pdf.png') >= 0) {
        var imd = cvs.toDataURL('image/pdf');
        var ui8a = convertDataURIToBinary(imd);
        var bb = new Blob([ui8a], {
            type: 'image/pdf'
        });
    } else {
        var imd = cvs.toDataURL('image/jpeg');
        var ui8a = convertDataURIToBinary(imd);
        var bb = new Blob([ui8a], {
            type: 'image/jpeg'
        });
    }

    window.requestFileSystem(window.TEMPORARY, 1024 * 1024, function(fs) {
        fs.root.getFile(fn, {
            create: true
        }, function(fileEntry) {
            // Create a FileWriter object for our FileEntry.
            fileEntry.createWriter(function(fileWriter) {
                fileWriter.onwriteend = function(e) {
                    //console.log(fileEntry.fullPath + ' Write completed.');
                };

                fileWriter.onerror = function(e) {
                    console.log('Write failed: ' + e.toString());
                };

                fileWriter.write(bb); //.getBlob(contentType[extname]));
            }, fileErrorHandler);
        }, fileErrorHandler);
    }, fileErrorHandler);
}

function convertDataURIToBinary(dataURI) {
    var BASE64_MARKER = ';base64,';
    var base64Index = dataURI.indexOf(BASE64_MARKER) + BASE64_MARKER.length;
    var base64 = dataURI.substring(base64Index);
    var raw = window.atob(base64);
    var rawLength = raw.length;
    var array = new Uint8Array(new ArrayBuffer(rawLength));

    for (i = 0; i < rawLength; i++) {
        array[i] = raw.charCodeAt(i);
    }
    return array;
}

function loadStudy() {
    // load WestPane content
    var tmpUrl = "westContainer.jsp?patient=" + pat.pat_ID + "&study=" +
        pat.studyUID + "&patientName=" + pat.pat_Name;
    tmpUrl += "&studyDesc=" + pat.studyDesc + "&studyDate=" + pat.studyDate +
        "&totalSeries=" + pat.totalSeries + "&dcmURL=" + pat.dicomURL;
    tmpUrl += "&wadoUrl=" + pat.serverURL;
    tmpUrl += "&contentType=image/" + pat.imgType;
    $('#westPane').load(encodeURI(tmpUrl));
    document.title = pat.pat_Name;
}

function loadDownloadModal() {
    if (pat.serverURL == "C-MOVE" || pat.serverURL == "C-GET") {
        $('#title').text("CANNOT INVOKE DOWNLOAD WINDOW");
        $('#errorInfo').text("Files can be downloaded only from the servers having retrieve type as WADO ");
        var downloadSelection = document.getElementById("downloadSelection-content");
        downloadSelection.style.display = "none";
        $("#downloadInfo").removeClass('modal-content').addClass('modal-error');
    } else {
        var errorMsg = document.getElementById("errorMsg");
        errorMsg.style.display = "none";
        $('#title').text("Download JPEG/DICOM files");
        var tempUrl = "downloadSelection.jsp?patient=" + pat.pat_ID + "&study=" +
            pat.studyUID + "&patientName=" + pat.pat_Name;
        tempUrl += "&studyDesc=" + pat.studyDesc + "&studyDate=" + pat.studyDate +
            "&totalSeries=" + pat.totalSeries + "&dcmURL=" + pat.dicomURL;
        tempUrl += "&wadoUrl=" + pat.serverURL;
        tempUrl += "&contentType=image/" + pat.imgType; // Image Type - png or Jpeg
        $('#downloadSelection-content').load(encodeURI(tempUrl));
    }

}
/*function getSeries(patId, studyUID) {
	$.post("Series.do", {
		"patientID" : patId,
		"studyUID" : studyUID,
		"dcmURL" : pat.dicomURL
	}, function(data) {
		sessionStorage[studyUID] = JSON.stringify(data);
		firstSeries = data[0]['seriesUID'];
		if(pat.serverURL != 'C-MOVE' && pat.serverURL != 'C-GET') {
			$.each(data, function(i, series) {
				getInstances(patId, studyUID, series['seriesUID']);
			});
		}
	}, "json");
}*/

function getSeries(patId, studyUID) {

    $.post("Series.do", {
        "patientID": patId,
        "studyUID": studyUID,
        "dcmURL": pat.dicomURL,
        "retrieve": pat.serverURL
    }, function(data) {
        sessionStorage[studyUID] = JSON.stringify(data);
        if (pat.serverURL != "C-MOVE" && pat.serverURL != "C-GET") {
            $.each(data, function(i, series) {
                getInstances(patId, studyUID, series['seriesUID']);
            });
        }
    }, "json");
}

function getInstances(patId, studyUID, seriesUID) {
    $.post("Instance.do", {
        "patientId": patId,
        "studyUID": studyUID,
        "seriesUID": seriesUID,
        "dcmURL": pat.dicomURL,
        "serverURL": pat.serverURL
    }, function(data) {
        sessionStorage[seriesUID] = JSON.stringify(data);
    }, "json");
}

function storeSer(data) {
    $.each(data, function(i, series) {
        getInstances(pat.pat_ID, pat.studyUID, series['seriesUID']);
    });
}

function getIns(seriesUID) {
    jQuery.ajax({
        url: "Instance.do?patientId=" + pat.pat_ID + "&studyUID=" + pat.studyUID + "&seriesUID=" + seriesUID + "&dcmURL=" + pat.dicomURL + "&serverURL=" + pat.serverURL,
        dataType: 'json',
        cache: false,
        success: function(data) {
            sessionStorage[seriesUID] = JSON.stringify(data);
        },
        error: function(request) {
            console.log('error');
        }
    });
}

function fetchOtherStudies() {
    $.get("UserConfig.do", { 'settings': 'prefetch', 'todo': 'READ' }, function(data) {
        var doFetch = false;
        if (directLaunch) {
            if (data.trim() == 'Yes' && getParameter(document.location.search.substring(1), "patientID") != 'null') {
                doFetch = true;
            }
        } else {
            if (data.trim() == 'Yes' && pat.pat_ID.length > 0) {
                doFetch = true;
            }
        }

        if (doFetch) {
            $.post("otherStudies.do", {
                "patientID": pat.pat_ID,
                "studyUID": pat.studyUID,
                "dcmURL": pat.dicomURL
            }, function(data) {
                if (data.length > 0) {
                    $("#otherStudiesInfo").text((data.length + " archived") + (data.length > 1 ? " studies" : " study") + " found.");
                } else {
                    $("#otherStudiesInfo").text("No archived studies found.");
                }
                $.each(data, function(i, study) {
                    var link = encodeURI("Study.jsp?patient=" + pat.pat_ID + "&study=" + study["studyUID"] + "&dcmURL=" + pat.dicomURL + "&wadoUrl=" + pat.serverURL + "&studyDesc=" + study["studyDesc"] + "&studyDate=" + study["studyDate"] + "&descDisplay=false" + "&contentType=image/" + pat.imgType);
                    //					var div = "<div id=" + study['studyUID'] + " class='accordion close' link=" + link + " onclick='loadOther(this);'>" + study['dateDesc'] + "</div>";
                    var div = "<div id=" + study['studyUID'] + " class='accordion' link=" + link + " onclick='loadOther(this,false);'" + " >" + study['dateDesc'] + " <img src='images/download.png' style='padding-right: 5px; float: right;' title='Load this study' onclick='loadOther(this,true);' /> </div>";
                    $('#otherStudies').append(div);
                    $('#otherStudies').append(document.createElement("div"));
                });
                $("#otherStudies").show();
                $("#otherStudiesInfo").show();
            }, "json");
        }
    }, "text");
}

function loadOther(div1, isRet) {
    var div = isRet ? $(div1).parent() : div1;
    var childDiv = $(div).next();

    if ($(childDiv).children().length > 0) {
        acc($(div));
    } else if (isRet) {
        $(div).addClass("loading");
        $(div1).remove();
        $(childDiv).load($(div).attr('link'));
        acc($(div));
    }

}