/**
 * scheduler.js
 *     The client-side javascript code for the Scheduler plugin.
 *
 * Copyright (C) samuel337 2011
 *
 * This file is part of Deluge and is licensed under GNU General Public License 3.0, or later, with
 * the additional special exception to link portions of this program with the OpenSSL library.
 * See LICENSE for more details.
 *
 */

Ext.ns('Deluge.ux');

Deluge.ux.ScheduleSelector = Ext.extend(Ext.form.FieldSet, {
    title: _('Schedule'),
    autoHeight: true,
    style: 'margin-bottom: 0px; padding-bottom: 0px;',
    border: false,

    states: [
        {
            name: 'Normal',
            backgroundColor: 'LightGreen',
            borderColor: 'DarkGreen',
            value: 0,
        },
        {
            name: 'Throttled',
            backgroundColor: 'Yellow',
            borderColor: 'Gold',
            value: 1,
        },
        {
            name: 'Paused',
            backgroundColor: 'OrangeRed',
            borderColor: 'FireBrick',
            value: 2,
        },
    ],
    daysOfWeek: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],

    initComponent: function() {
        Deluge.ux.ScheduleSelector.superclass.initComponent.call(this);

        // ExtJS' radiogroup implementation is very broken for styling.
        /*this.stateBrush = this.add({
            xtype: 'radiogroup',
            fieldLabel: _('State Brush'),
            name: 'current_state_brush',
            submitValue: false,
            items: [
                { boxLabel: 'Normal', name: 'current_state_brush', inputValue: 0 },
                { boxLabel: 'Throttled', name: 'current_state_brush', inputValue: 1, checked: true },
                { boxLabel: 'Paused', name: 'current_state_brush', inputValue: 2 },
            ]
        });*/
    },

    onRender: function(ct, position) {
        Deluge.ux.ScheduleSelector.superclass.onRender.call(this, ct, position);

        var dom = this.body.dom;

        function createEl(parent, type) {
            var el = document.createElement(type);
            parent.appendChild(el);
            return el;
        }

        // create state brushes
        // tack a random number to the end to avoid clashes
        this.stateBrushName =
            'schedule-state-brush-' + Math.round(Math.random() * 10000);

        var el1 = createEl(dom, 'div');

        var el2 = createEl(el1, 'div');
        this.stateBrush = el2;
        el2.id = this.stateBrushName;

        // for webkit
        var floatAttr = 'float';
        if (el2.style.float == undefined) {
            // for firefox
            if (el2.style.cssFloat != undefined) floatAttr = 'cssFloat';
            // for IE
            if (el2.style.styleFloat != undefined) floatAttr = 'styleFloat';
        }
        el2.style[floatAttr] = 'right';

        for (var i = 0; i < this.states.length; i++) {
            var el3 = createEl(el2, 'input');
            el3.type = 'radio';
            el3.value = this.states[i].value;
            el3.name = this.stateBrushName;
            el3.id = this.stateBrushName + '-' + this.states[i].name;

            // isn't the first one
            if (i > 0) el3.style.marginLeft = '7px';

            // assume the first is the default state, so make the 2nd one the default brush
            if (i == 1) el3.checked = true;

            var el4 = createEl(el2, 'label');
            el4.appendChild(document.createTextNode(this.states[i].name));
            el4.htmlFor = el3.id;
            el4.style.backgroundColor = this.states[i].backgroundColor;
            el4.style.borderBottom = '2px solid ' + this.states[i].borderColor;
            el4.style.padding = '2px 3px';
            el4.style.marginLeft = '3px';
        }

        el1.appendChild(document.createTextNode('Select a state brush:'));

        el1.style.marginBottom = '10px';

        // keep the radio buttons separate from the time bars
        createEl(dom, 'div').style.clear = 'both';

        var table = createEl(dom, 'table');
        table.cellSpacing = 0;

        // cache access to cells for easier access later
        this.scheduleCells = {};

        Ext.each(
            this.daysOfWeek,
            function(day) {
                var cells = [];
                var row = createEl(table, 'tr');
                var label = createEl(row, 'th');
                label.setAttribute(
                    'style',
                    'font-weight: bold; padding-right: 5px;'
                );
                label.appendChild(document.createTextNode(day));
                for (var hour = 0; hour < 24; hour++) {
                    var cell = createEl(row, 'td');

                    // assume the first state is the default state
                    cell.currentValue = cell.oldValue = this.states[0].value;
                    cell.day = day;
                    cell.hour = hour;

                    cell.width = '16px';
                    cell.height = '20px';

                    cell.style.border = '1px solid #999999';
                    // don't repeat borders in between cells
                    if (hour != 23)
                        // not the last cell
                        cell.style.borderRight = 'none';

                    this.updateCell(cell);

                    cells.push(cell);

                    cell = Ext.get(cell);
                    cell.on('click', this.onCellClick, this);
                    cell.on('mouseover', this.onCellMouseOver, this);
                    cell.on('mouseout', this.onCellMouseOut, this);
                    cell.on('mousedown', this.onCellMouseDown, this);
                    cell.on('mouseup', this.onCellMouseUp, this);
                }

                // insert gap row to provide visual separation
                row = createEl(table, 'tr');
                // blank cell to create gap
                createEl(row, 'td').height = '3px';

                this.scheduleCells[day] = cells;
            },
            this
        );
    },

    updateCell: function(cell) {
        // sanity check
        if (cell.currentValue == undefined) return;

        for (var i in this.states) {
            var curState = this.states[i];
            if (curState.value == cell.currentValue) {
                cell.style.background = curState.backgroundColor;
                break;
            }
        }
    },

    getCurrentBrushValue: function() {
        var v = null;
        var brushes = Ext.get(this.body.dom).findParent('form').elements[
            this.stateBrushName
        ];
        Ext.each(brushes, function(b) {
            if (b.checked) v = b.value;
        });

        return v;
    },

    onCellClick: function(event, cell) {
        cell.oldValue = cell.currentValue;

        this.dragAnchor = null;
    },

    onCellMouseDown: function(event, cell) {
        this.dragAnchor = cell;
    },

    onCellMouseUp: function(event, cell) {
        // if we're dragging...
        if (this.dragAnchor) {
            // set all those between here and the anchor to the new values
            if (cell.hour > this.dragAnchor.hour)
                this.confirmCells(cell.day, this.dragAnchor.hour, cell.hour);
            else if (cell.hour < this.dragAnchor.hour)
                this.confirmCells(cell.day, cell.hour, this.dragAnchor.hour);
            else this.confirmCells(cell.day, cell.hour, cell.hour);

            this.hideCellLeftTooltip();
            this.hideCellRightTooltip();
            this.dragAnchor = null;
        }
    },

    onCellMouseOver: function(event, cell) {
        // LEFT TOOL TIP
        // if it isn't showing and we're dragging, show it.
        // otherwise if dragging, leave it alone unless we're dragging to the left.
        // if we're not dragging, show it.
        var leftTooltipCell = null;
        if (!this.dragAnchor) leftTooltipCell = cell;
        else if (
            (this.dragAnchor && this.isCellLeftTooltipHidden()) ||
            (this.dragAnchor && this.dragAnchor.hour > cell.hour)
        )
            leftTooltipCell = this.dragAnchor;

        if (leftTooltipCell) {
            var hour = leftTooltipCell.hour;
            var pm = false;

            // convert to 12-hour time
            if (hour >= 12) {
                pm = true;
                if (hour > 12) hour -= 12;
            } else if (hour == 0) {
                // change 0 hour to 12am
                hour = 12;
            }
            this.showCellLeftTooltip(
                hour + ' ' + (pm ? 'pm' : 'am'),
                leftTooltipCell
            );
        }

        // RIGHT TOOL TIP
        var rightTooltipCell = null;
        if (this.dragAnchor) {
            if (this.dragAnchor.hour == cell.hour) this.hideCellRightTooltip();
            else if (
                this.dragAnchor.hour > cell.hour &&
                this.isCellRightTooltipHidden()
            )
                rightTooltipCell = this.dragAnchor;
            // cell.hour > this.dragAnchor.hour
            else rightTooltipCell = cell;
        }

        if (rightTooltipCell) {
            var hour = rightTooltipCell.hour;
            var pm = false;

            // convert to 12-hour time
            if (hour >= 12) {
                pm = true;
                if (hour > 12) hour -= 12;
            } else if (hour == 0) {
                // change 0 hour to 12am
                hour = 12;
            }
            this.showCellRightTooltip(
                hour + ' ' + (pm ? 'pm' : 'am'),
                rightTooltipCell
            );
        }

        // preview colour change and
        // revert state for all those on the outer side of the drag if dragging
        if (this.dragAnchor) {
            if (cell.day != this.dragAnchor.day) {
                // dragged into another day. Abort! Abort!
                Ext.each(
                    this.daysOfWeek,
                    function(day) {
                        this.revertCells(day, 0, 23);
                    },
                    this
                );
                this.dragAnchor = null;
                this.hideCellLeftTooltip();
                this.hideCellRightTooltip();
            } else if (cell.hour > this.dragAnchor.hour) {
                // dragging right
                this.revertCells(cell.day, cell.hour + 1, 23);
                this.previewCells(cell.day, this.dragAnchor.hour, cell.hour);
            } else if (cell.hour < this.dragAnchor.hour) {
                // dragging left
                this.revertCells(cell.day, 0, cell.hour - 1);
                this.previewCells(cell.day, cell.hour, this.dragAnchor.hour);
            } else {
                // back to anchor cell
                // don't know if it is from right or left, so revert all except this
                this.revertCells(cell.day, cell.hour + 1, 23);
                this.revertCells(cell.day, 0, cell.hour - 1);
            }
        } else {
            // not dragging, just preview this cell
            this.previewCells(cell.day, cell.hour, cell.hour);
        }
    },

    onCellMouseOut: function(event, cell) {
        if (!this.dragAnchor) this.hideCellLeftTooltip();

        // revert state. If new state has been set, old and new will be equal.
        // if dragging, this will be handled by the next mouse over
        if (this.dragAnchor == null && cell.oldValue != cell.currentValue) {
            this.revertCells(cell.day, cell.hour, cell.hour);
        }
    },

    previewCells: function(day, fromHour, toHour) {
        var cells = this.scheduleCells[day];
        var curBrushValue = this.getCurrentBrushValue();

        if (toHour > cells.length) toHour = cells.length;

        for (var i = fromHour; i <= toHour; i++) {
            if (cells[i].currentValue != curBrushValue) {
                cells[i].oldValue = cells[i].currentValue;
                cells[i].currentValue = curBrushValue;
                this.updateCell(cells[i]);
            }
        }
    },

    revertCells: function(day, fromHour, toHour) {
        var cells = this.scheduleCells[day];

        if (toHour > cells.length) toHour = cells.length;

        for (var i = fromHour; i <= toHour; i++) {
            cells[i].currentValue = cells[i].oldValue;
            this.updateCell(cells[i]);
        }
    },

    confirmCells: function(day, fromHour, toHour) {
        var cells = this.scheduleCells[day];

        if (toHour > cells.length) toHour = cells.length;

        for (var i = fromHour; i <= toHour; i++) {
            if (cells[i].currentValue != cells[i].oldValue) {
                cells[i].oldValue = cells[i].currentValue;
            }
        }
    },

    showCellLeftTooltip: function(text, cell) {
        var tooltip = this.cellLeftTooltip;

        if (!tooltip) {
            // no cached left tooltip exists, create one
            tooltip = document.createElement('div');
            this.cellLeftTooltip = tooltip;
            this.body.dom.appendChild(tooltip);
            tooltip.style.position = 'absolute';
            tooltip.style.backgroundColor = '#F2F2F2';
            tooltip.style.border = '1px solid #333333';
            tooltip.style.padding = '1px 3px';
            tooltip.style.opacity = 0.8;
        }

        // remove all existing children
        while (tooltip.childNodes.length > 0) {
            tooltip.removeChild(tooltip.firstChild);
        }
        // add the requested text
        tooltip.appendChild(document.createTextNode(text));

        // place the tooltip
        Ext.get(tooltip).alignTo(cell, 'br-tr');

        // make it visible
        tooltip.style.visibility = 'visible';
    },

    hideCellLeftTooltip: function() {
        if (this.cellLeftTooltip) {
            this.cellLeftTooltip.style.visibility = 'hidden';
        }
    },

    isCellLeftTooltipHidden: function() {
        if (this.cellLeftTooltip)
            return this.cellLeftTooltip.style.visibility == 'hidden';
        else return true;
    },

    showCellRightTooltip: function(text, cell) {
        var tooltip = this.cellRightTooltip;

        if (!tooltip) {
            // no cached left tooltip exists, create one
            tooltip = document.createElement('div');
            this.cellRightTooltip = tooltip;
            this.body.dom.appendChild(tooltip);
            tooltip.style.position = 'absolute';
            tooltip.style.backgroundColor = '#F2F2F2';
            tooltip.style.border = '1px solid #333333';
            tooltip.style.padding = '1px 3px';
            tooltip.style.opacity = 0.8;
        }

        // remove all existing children
        while (tooltip.childNodes.length > 0) {
            tooltip.removeChild(tooltip.firstChild);
        }
        // add the requested text
        tooltip.appendChild(document.createTextNode(text));

        // place the tooltip
        Ext.get(tooltip).alignTo(cell, 'bl-tl');

        // make it visible
        tooltip.style.visibility = 'visible';
    },

    hideCellRightTooltip: function() {
        if (this.cellRightTooltip) {
            this.cellRightTooltip.style.visibility = 'hidden';
        }
    },

    isCellRightTooltipHidden: function() {
        if (this.cellRightTooltip)
            return this.cellRightTooltip.style.visibility == 'hidden';
        else return true;
    },

    getConfig: function() {
        var config = [];

        for (var i = 0; i < 24; i++) {
            var hourConfig = [0, 0, 0, 0, 0, 0, 0];

            for (var j = 0; j < this.daysOfWeek.length; j++) {
                hourConfig[j] = parseInt(
                    this.scheduleCells[this.daysOfWeek[j]][i].currentValue
                );
            }

            config.push(hourConfig);
        }

        return config;
    },

    setConfig: function(config) {
        for (var i = 0; i < 24; i++) {
            var hourConfig = config[i];

            for (var j = 0; j < this.daysOfWeek.length; j++) {
                if (this.scheduleCells == undefined) {
                    var cell = hourConfig[j];
                } else {
                    var cell = this.scheduleCells[this.daysOfWeek[j]][i];
                }
                cell.currentValue = cell.oldValue = hourConfig[j];
                this.updateCell(cell);
            }
        }
    },
});

Ext.ns('Deluge.ux.preferences');

Deluge.ux.preferences.SchedulerPage = Ext.extend(Ext.Panel, {
    border: false,
    title: _('Scheduler'),
    header: false,
    layout: 'fit',

    initComponent: function() {
        Deluge.ux.preferences.SchedulerPage.superclass.initComponent.call(this);

        this.form = this.add({
            xtype: 'form',
            layout: 'form',
            border: false,
            autoHeight: true,
        });

        this.schedule = this.form.add(new Deluge.ux.ScheduleSelector());

        this.slowSettings = this.form.add({
            xtype: 'fieldset',
            border: false,
            title: _('Throttled Settings'),
            autoHeight: true,
            defaultType: 'spinnerfield',
            defaults: {
                minValue: -1,
                maxValue: 99999,
            },
            style: 'margin-top: 5px; margin-bottom: 0px; padding-bottom: 0px;',
            labelWidth: 200,
        });

        this.downloadLimit = this.slowSettings.add({
            fieldLabel: _('Maximum Download Speed (KiB/s)'),
            name: 'download_limit',
            width: 80,
            value: -1,
            decimalPrecision: 0,
        });
        this.uploadLimit = this.slowSettings.add({
            fieldLabel: _('Maximum Upload Speed (KiB/s)'),
            name: 'upload_limit',
            width: 80,
            value: -1,
            decimalPrecision: 0,
        });
        this.activeTorrents = this.slowSettings.add({
            fieldLabel: _('Active Torrents'),
            name: 'active_torrents',
            width: 80,
            value: -1,
            decimalPrecision: 0,
        });
        this.activeDownloading = this.slowSettings.add({
            fieldLabel: _('Active Downloading'),
            name: 'active_downloading',
            width: 80,
            value: -1,
            decimalPrecision: 0,
        });
        this.activeSeeding = this.slowSettings.add({
            fieldLabel: _('Active Seeding'),
            name: 'active_seeding',
            width: 80,
            value: -1,
            decimalPrecision: 0,
        });

        this.on('show', this.updateConfig, this);
    },

    onRender: function(ct, position) {
        Deluge.ux.preferences.SchedulerPage.superclass.onRender.call(
            this,
            ct,
            position
        );
        this.form.layout = new Ext.layout.FormLayout();
        this.form.layout.setContainer(this);
        this.form.doLayout();
    },

    onApply: function() {
        // build settings object
        var config = {};

        config['button_state'] = this.schedule.getConfig();
        config['low_down'] = this.downloadLimit.getValue();
        config['low_up'] = this.uploadLimit.getValue();
        config['low_active'] = this.activeTorrents.getValue();
        config['low_active_down'] = this.activeDownloading.getValue();
        config['low_active_up'] = this.activeSeeding.getValue();

        deluge.client.scheduler.set_config(config);
    },

    onOk: function() {
        this.onApply();
    },

    updateConfig: function() {
        deluge.client.scheduler.get_config({
            success: function(config) {
                this.schedule.setConfig(config['button_state']);
                this.downloadLimit.setValue(config['low_down']);
                this.uploadLimit.setValue(config['low_up']);
                this.activeTorrents.setValue(config['low_active']);
                this.activeDownloading.setValue(config['low_active_down']);
                this.activeSeeding.setValue(config['low_active_up']);
            },
            scope: this,
        });
    },
});

Deluge.plugins.SchedulerPlugin = Ext.extend(Deluge.Plugin, {
    name: 'Scheduler',

    onDisable: function() {
        deluge.preferences.removePage(this.prefsPage);
    },

    onEnable: function() {
        this.prefsPage = deluge.preferences.addPage(
            new Deluge.ux.preferences.SchedulerPage()
        );
    },
});
Deluge.registerPlugin('Scheduler', Deluge.plugins.SchedulerPlugin);
