/* jslint node: true */
'use strict';

//  ENiGMA½
const TextView              = require('./text_view.js').TextView;
const View                  = require('./view.js').View;
const EditTextView          = require('./edit_text_view.js').EditTextView;
const ButtonView            = require('./button_view.js').ButtonView;
const VerticalMenuView      = require('./vertical_menu_view.js').VerticalMenuView;
const HorizontalMenuView    = require('./horizontal_menu_view.js').HorizontalMenuView;
const SpinnerMenuView       = require('./spinner_menu_view.js').SpinnerMenuView;
const ToggleMenuView        = require('./toggle_menu_view.js').ToggleMenuView;
const MaskEditTextView      = require('./mask_edit_text_view.js').MaskEditTextView;
const KeyEntryView          = require('./key_entry_view.js');
const MultiLineEditTextView = require('./multi_line_edit_text_view.js').MultiLineEditTextView;
const getPredefinedMCIValue = require('./predefined_mci.js').getPredefinedMCIValue;
const ansi                  = require('./ansi_term.js');

//  deps
const assert                    = require('assert');
const _                     = require('lodash');

exports.MCIViewFactory      = MCIViewFactory;

function MCIViewFactory(client) {
    this.client = client;
}

MCIViewFactory.UserViewCodes = [
    'TL', 'ET', 'ME', 'MT', 'PL', 'BT', 'VM', 'HM', 'SM', 'TM', 'KE',

    //
    //  XY is a special MCI code that allows finding positions
    //  and counts for key lookup, but does not explicitly
    //  represent a visible View on it's own
    //
    'XY',
];

MCIViewFactory.MovementCodes = [
    'CF', 'CB', 'CU', 'CD',
];

MCIViewFactory.prototype.createFromMCI = function(mci) {
    assert(mci.code);
    assert(mci.id > 0);
    assert(mci.position);

    var view;
    var options = {
        client          : this.client,
        id              : mci.id,
        ansiSGR         : mci.SGR,
        ansiFocusSGR    : mci.focusSGR,
        position        : { row : mci.position[0], col : mci.position[1] },
    };

    //  :TODO: These should use setPropertyValue()!
    function setOption(pos, name) {
        if(mci.args.length > pos && mci.args[pos].length > 0) {
            options[name] = mci.args[pos];
        }
    }

    function setWidth(pos) {
        if(mci.args.length > pos && mci.args[pos].length > 0) {
            if(!_.isObject(options.dimens)) {
                options.dimens = {};
            }
            options.dimens.width = parseInt(mci.args[pos], 10);
        }
    }

    function setFocusOption(pos, name) {
        if(mci.focusArgs && mci.focusArgs.length > pos && mci.focusArgs[pos].length > 0) {
            options[name] = mci.focusArgs[pos];
        }
    }

    //
    //  Note: Keep this in sync with UserViewCodes above!
    //
    switch(mci.code) {
        //  Text Label (Text View)
        case 'TL' :
            setOption(0,    'textStyle');
            setOption(1,    'justify');
            setWidth(2);

            view = new TextView(options);
            break;

            //  Edit Text
        case 'ET' :
            setWidth(0);

            setOption(1,        'textStyle');
            setFocusOption(0,   'focusTextStyle');

            view = new EditTextView(options);
            break;

            //  Masked Edit Text
        case 'ME' :
            setOption(0,        'textStyle');
            setFocusOption(0,   'focusTextStyle');

            view = new MaskEditTextView(options);
            break;

            //  Multi Line Edit Text
        case 'MT' :
            //  :TODO: apply params
            view = new MultiLineEditTextView(options);
            break;

            //  Pre-defined Label (Text View)
            //  :TODO: Currently no real point of PL -- @method replaces this pretty much... probably remove
        case 'PL' :
            if(mci.args.length > 0) {
                options.text = getPredefinedMCIValue(this.client, mci.args[0]);
                if(options.text) {
                    setOption(1, 'textStyle');
                    setOption(2, 'justify');
                    setWidth(3);

                    view = new TextView(options);
                }
            }
            break;

            //  Button
        case 'BT' :
            if(mci.args.length > 0) {
                options.dimens = { width : parseInt(mci.args[0], 10) };
            }

            setOption(1, 'textStyle');
            setOption(2, 'justify');

            setFocusOption(0, 'focusTextStyle');

            view = new ButtonView(options);
            break;

            //  Vertial Menu
        case 'VM' :
            setOption(0,        'itemSpacing');
            setOption(1,        'justify');
            setOption(2,        'textStyle');

            setFocusOption(0,   'focusTextStyle');

            view = new VerticalMenuView(options);
            break;

            //  Horizontal Menu
        case 'HM' :
            setOption(0,        'itemSpacing');
            setOption(1,        'textStyle');

            setFocusOption(0,   'focusTextStyle');

            view = new HorizontalMenuView(options);
            break;

        case 'SM' :
            setOption(0,        'textStyle');
            setOption(1,        'justify');

            setFocusOption(0,   'focusTextStyle');

            view = new SpinnerMenuView(options);
            break;

        case 'TM' :
            if(mci.args.length > 0) {
                var styleSG1 = { fg : parseInt(mci.args[0], 10) };
                if(mci.args.length > 1) {
                    styleSG1.bg = parseInt(mci.args[1], 10);
                }
                options.styleSG1 = ansi.getSGRFromGraphicRendition(styleSG1, true);
            }

            setFocusOption(0,   'focusTextStyle');

            view = new ToggleMenuView(options);
            break;

        case 'KE' :
            view = new KeyEntryView(options);
            break;

        case 'XY' :
            view = new View(options);
            break;

        default :
            if(!MCIViewFactory.MovementCodes.includes(mci.code)) {
                options.text = getPredefinedMCIValue(this.client, mci.code);
                if(_.isString(options.text)) {
                    setWidth(0);

                    setOption(1,    'textStyle');
                    setOption(2,    'justify');

                    view = new TextView(options);
                }
            }
            break;
    }

    if(view) {
        view.mciCode = mci.code;
    }

    return view;
};