/* Copyright (C) 2013 by Bundesamt fuer Strahlenschutz
 * Software engineering by Intevation GmbH
 *
 * This file is Free Software under the GNU GPL (v>=3)
 * and comes with ABSOLUTELY NO WARRANTY! Check out
 * the documentation coming with IMIS-Labordaten-Application for details.
 */

/**
 * Controller for Proben
 */

// TODO: Move these functions into the controller.
function numOfErrors(proben) {
    var errors = 0;
    for (var key in proben) {
        if (proben[key].length > 0) {
            errors = errors + 1;
        }
    }
    return errors;
}

// TODO: Use tpl to generate the html document.
function buildImportReport(filename, msg, errors, warnings) {
    var out = [];
    // There is a entry for each imported proben in the errors dict (might be
    // empty)
    var numProben = (Object.keys(errors).length > 0);
    var numErrors = (numOfErrors(errors));
    var hasWarnings = (Object.keys(warnings).length > 0);
    if (msg !== 200) {
            out.push('Der Import der Datei ' +
                filename +
                ' war nicht erfolgreich. Der Importvorgang konnte aufgrund' +
                'eines Fehlers im Server nicht beendet werden.');
    }
    else {
        if (numErrors === numProben) {
            out.push('Der Import der Datei '
                + filename + ' war nicht erfolgreich.');
        }
        else if (numErrors === 0) {
            out.push('Der Import der Datei ' + filename + ' war erfolgreich.');
        }
        else {
            out.push('Der Import der Datei '
                + filename + ' war nicht oder nur teilweise erfolgreich.');
        }
        out.push(' Bei dem Import sind folgende Fehler und Warnungen ' +
                'aufgetreten:');
        out.push('<br/>');
        var key;
        var msgs;
        if (numErrors) {
            out.push('<strong>Fehler:</strong>');
            out.push('<br/>');
            out.push('<ol>');
            for (key in errors) {
                out.push('<li>Probe: ' + key);
                msgs = errors[key];
                out.push('<ol>');
                for (var i = msgs.length - 1; i >= 0; i--) {
                    out.push('<li>' + msgs[i].key +
                        ' (' + Lada.getApplication().bundle.getMsg(
                            msgs[i].code.toString()) +
                        '): ' + msgs[i].value + '</li>');
                }
                out.push('</ol>');
                out.push('</li>');
            }
            out.push('</ol>');
            out.push('<br/>');
        }
        if (hasWarnings) {
            out.push('<strong>Warnungen:</strong>');
            out.push('<br/>');
            out.push('<ol>');
            for (key in warnings) {
                out.push('<li>' + key);
                msgs = warnings[key];
                out.push('<ol>');
                for (var i = msgs.length - 1; i >= 0; i--) {
                    out.push('<li>' + msgs[i].key + ' (' + Lada.getApplication().bundle.getMsg(msgs[i].code.toString())+'): '+msgs[i].value+'</li>')
                }
                out.push('</ol>');
                out.push('</li>');
            }
            out.push('</ol>');
        }
    }
    return out.join('');
}

Ext.define('Lada.controller.Proben', {
    extend: 'Lada.controller.Base',

    views: [
        'proben.Edit',
        'proben.Create',
        'proben.Import'
    ],

    stores: [
        'Proben',
        'Zusatzwerte',
        'KommentareP',
        'Orte',
        'Messungen'
    ],

    init: function() {
        this.callParent(arguments);
    },

    addListeners: function() {
        this.control({
            'probenlist': {
                itemdblclick: this.editItem
            },
            'probenlist toolbar button[action=add]': {
                click: this.addItem
            },
            'probenlist toolbar button[action=import]': {
                click: this.selectUploadFile
            },
            'probenlist toolbar button[action=export]': {
                click: this.downloadFile
            },
            'probencreate button[action=save]': {
                click: this.saveItem
            },
            'probenedit button[action=save]': {
                click: this.saveItem
            },
            'probenimport button[action=save]': {
                click: this.uploadItem
            },
            'probencreate form': {
                savesuccess: this.createSuccess,
                savefailure: this.createFailure
            },
            'probenedit form': {
                savesuccess: this.editSuccess,
                savefailure: this.editFailure
            }
        });
    },

    addItem: function() {
        Ext.widget('probencreate');
    },

    /**
     * Opens a window with a file chooser to select the file to upload
     * @private
     */
    selectUploadFile: function() {
        Ext.widget('probenimport');
    },

    /** Uploads the selected file the the server
     * @private
     */
    uploadItem: function(button) {
        var win = button.up('window');
        var form = win.down('form');
        if (form.isValid()) {
            form.submit({
                url: 'server/rest/import/laf',
                waitMsg: 'Importiere...',
                // TODO: Handle the response correct. o must must contain the
                // filename (None) <2013-08-13 16:17>
                success: function(fp, resp) {
                    var errors = resp.result.data.errors;
                    var warnings = resp.result.data.warnings;
                    var filename = resp.result.data.filename;
                    var message = resp.result.message;
                    var dialogbody =
                        buildImportReport(filename, message, errors, warnings);
                    Ext.Msg.alert('Erfolg', dialogbody);
                    win.close();
                },
                failure: function(fp, resp) {
                    var errors = resp.result.data.errors;
                    var warnings = resp.result.data.warnings;
                    var filename = resp.result.data.filename;
                    var message = resp.result.message;
                    var dialogbody =
                        buildImportReport(filename, message, errors, warnings);
                    Ext.Msg.alert('Fehler', dialogbody);
                    win.close();
                }
            });
        }
    },

    /**
     * Will download the selected Probe in LAF format in a new window (tab).
     */
    downloadFile: function(button) {
        var grid = button.up('grid');
        var selection = grid.getView().getSelectionModel().getSelection();
        var hiddenItems = [];
        for (var i = 0; i < selection.length; i++) {
            hiddenItems.push({
                xtype: 'hiddenfield',
                name: 'probeId',
                value: selection[i].get('probeId')
            });
        }
        var hiddenForm = Ext.create('Ext.form.Panel', {
            title: 'hiddenForm',
            standardSubmit: true,
            url: 'server/rest/export/laf',
            timeout: 120,
            height: 0,
            width: 0,
            hidden: true,
            items: hiddenItems
        });
        hiddenForm.getForm().submit();
    },

    editItem: function(grid, record) {
        var id = record.get('id');
        // Load Zusatzwerte
        var pstore = Ext.data.StoreManager.get('staProbenzusaetze');
        pstore.load();
        var zstore = this.getZusatzwerteStore();
        zstore.load({
            params: {
                probeId: id
            }
        });
        // Load Kommentare
        var kstore = this.getKommentarePStore();
        kstore.load({
            params: {
                probeId: id
            }
        });
        // Load Orte
        var ostore = this.getOrteStore();
        ostore.load({
            params: {
                probeId: id
            }
        });
        // Load Orte
        var mstore = this.getMessungenStore();
        mstore.load({
            params: {
                probeId: id
            }
        });
        var view = Ext.widget('probenedit', {
            modelId: id
        });
        view.show();
    },

    createSuccess: function(form, record, response) {
        // Close Createdialog
        var win = form.up('window');
        win.close();
        var store = this.getProbenStore();
        // Load or reload the probenstore.
        if (store.getCount() === 0) {
            store.load({
                scope: this,
                callback: function() {
                    // Open Editdialog
                    var json = Ext.decode(response.responseText);
                    if (json) {
                        var probeId = json.data.probeId;
                        var probe = store.findRecord('probeId', probeId);
                        this.editItem(null, probe);
                    }
                }
            });
        }
        else {
            store.reload({
                scope: this,
                callback: function() {
                    // Open Editdialog
                    var json = Ext.decode(response.responseText);
                    if (json) {
                        var probeId = json.data.probeId;
                        var probe = store.findRecord('probeId', probeId);
                        this.editItem(null, probe);
                    }
                }
            });
        }
    },

    editSuccess: function(form) {
        // Reload store
        var store = this.getProbenStore();
        store.reload();
        var win = form.up('window');
        win.close();
    }
});