import ScratchBlocks from 'scratch-blocks';

const categorySeparator = '<sep gap="36"/>';

const blockSeparator = '<sep gap="36"/>'; // At default scale, about 28px

const motion = function (isStage, targetId) {
    const stageSelected = ScratchBlocks.ScratchMsgs.translate(
        'MOTION_STAGE_SELECTED',
        'Stage selected: no motion blocks'
    );
    return `
    <category name="%{BKY_CATEGORY_MOTION}" id="motion" colour="#4C97FF" secondaryColour="#3373CC">
        ${isStage ? `
        <label text="${stageSelected}"></label>
        ` : `
        <block type="motion_movesteps">
            <value name="STEPS">
                <shadow type="math_number">
                    <field name="NUM">10</field>
                </shadow>
            </value>
        </block>
        <block type="motion_turnright">
            <value name="DEGREES">
                <shadow type="math_number">
                    <field name="NUM">15</field>
                </shadow>
            </value>
        </block>
        <block type="motion_turnleft">
            <value name="DEGREES">
                <shadow type="math_number">
                    <field name="NUM">15</field>
                </shadow>
            </value>
        </block>
        ${blockSeparator}
        <block type="motion_goto">
            <value name="TO">
                <shadow type="motion_goto_menu">
                </shadow>
            </value>
        </block>
        <block type="motion_gotoxy">
            <value name="X">
                <shadow id="movex" type="math_number">
                    <field name="NUM">0</field>
                </shadow>
            </value>
            <value name="Y">
                <shadow id="movey" type="math_number">
                    <field name="NUM">0</field>
                </shadow>
            </value>
        </block>
        <block type="motion_glideto" id="motion_glideto">
            <value name="SECS">
                <shadow type="math_number">
                    <field name="NUM">1</field>
                </shadow>
            </value>
            <value name="TO">
                <shadow type="motion_glideto_menu">
                </shadow>
            </value>
        </block>
        <block type="motion_glidesecstoxy">
            <value name="SECS">
                <shadow type="math_number">
                    <field name="NUM">1</field>
                </shadow>
            </value>
            <value name="X">
                <shadow id="glidex" type="math_number">
                    <field name="NUM">0</field>
                </shadow>
            </value>
            <value name="Y">
                <shadow id="glidey" type="math_number">
                    <field name="NUM">0</field>
                </shadow>
            </value>
        </block>
        ${blockSeparator}
        <block type="motion_pointindirection">
            <value name="DIRECTION">
                <shadow type="math_angle">
                    <field name="NUM">90</field>
                </shadow>
            </value>
        </block>
        <block type="motion_pointtowards">
            <value name="TOWARDS">
                <shadow type="motion_pointtowards_menu">
                </shadow>
            </value>
        </block>
        ${blockSeparator}
        <block type="motion_changexby">
            <value name="DX">
                <shadow type="math_number">
                    <field name="NUM">10</field>
                </shadow>
            </value>
        </block>
        <block type="motion_setx">
            <value name="X">
                <shadow id="setx" type="math_number">
                    <field name="NUM">0</field>
                </shadow>
            </value>
        </block>
        <block type="motion_changeyby">
            <value name="DY">
                <shadow type="math_number">
                    <field name="NUM">10</field>
                </shadow>
            </value>
        </block>
        <block type="motion_sety">
            <value name="Y">
                <shadow id="sety" type="math_number">
                    <field name="NUM">0</field>
                </shadow>
            </value>
        </block>
        ${blockSeparator}
        <block type="motion_ifonedgebounce"/>
        ${blockSeparator}
        <block type="motion_setrotationstyle"/>
        ${blockSeparator}
        <block id="${targetId}_xposition" type="motion_xposition"/>
        <block id="${targetId}_yposition" type="motion_yposition"/>
        <block id="${targetId}_direction" type="motion_direction"/>`}
        ${categorySeparator}
    </category>
    `;
};

const xmlEscape = function (unsafe) {
    return unsafe.replace(/[<>&'"]/g, c => {
        switch (c) {
        case '<': return '&lt;';
        case '>': return '&gt;';
        case '&': return '&amp;';
        case '\'': return '&apos;';
        case '"': return '&quot;';
        }
    });
};

const looks = function (isStage, targetId, costumeName, backdropName) {
    const hello = ScratchBlocks.ScratchMsgs.translate('LOOKS_HELLO', 'Hello!');
    const hmm = ScratchBlocks.ScratchMsgs.translate('LOOKS_HMM', 'Hmm...');
    return `
    <category name="%{BKY_CATEGORY_LOOKS}" id="looks" colour="#9966FF" secondaryColour="#774DCB">
        ${isStage ? '' : `
        <block type="looks_sayforsecs">
            <value name="MESSAGE">
                <shadow type="text">
                    <field name="TEXT">${hello}</field>
                </shadow>
            </value>
            <value name="SECS">
                <shadow type="math_number">
                    <field name="NUM">2</field>
                </shadow>
            </value>
        </block>
        <block type="looks_say">
            <value name="MESSAGE">
                <shadow type="text">
                    <field name="TEXT">${hello}</field>
                </shadow>
            </value>
        </block>
        <block type="looks_thinkforsecs">
            <value name="MESSAGE">
                <shadow type="text">
                    <field name="TEXT">${hmm}</field>
                </shadow>
            </value>
            <value name="SECS">
                <shadow type="math_number">
                    <field name="NUM">2</field>
                </shadow>
            </value>
        </block>
        <block type="looks_think">
            <value name="MESSAGE">
                <shadow type="text">
                    <field name="TEXT">${hmm}</field>
                </shadow>
            </value>
        </block>
        ${blockSeparator}
        `}
        ${isStage ? `
            <block type="looks_switchbackdropto">
                <value name="BACKDROP">
                    <shadow type="looks_backdrops">
                        <field name="BACKDROP">${backdropName}</field>
                    </shadow>
                </value>
            </block>
            <block type="looks_switchbackdroptoandwait">
                <value name="BACKDROP">
                    <shadow type="looks_backdrops">
                        <field name="BACKDROP">${backdropName}</field>
                    </shadow>
                </value>
            </block>
            <block type="looks_nextbackdrop"/>
        ` : `
            <block id="${targetId}_switchcostumeto" type="looks_switchcostumeto">
                <value name="COSTUME">
                    <shadow type="looks_costume">
                        <field name="COSTUME">${costumeName}</field>
                    </shadow>
                </value>
            </block>
            <block type="looks_nextcostume"/>
            <block type="looks_switchbackdropto">
                <value name="BACKDROP">
                    <shadow type="looks_backdrops">
                        <field name="BACKDROP">${backdropName}</field>
                    </shadow>
                </value>
            </block>
            <block type="looks_nextbackdrop"/>
            ${blockSeparator}
            <block type="looks_changesizeby">
                <value name="CHANGE">
                    <shadow type="math_number">
                        <field name="NUM">10</field>
                    </shadow>
                </value>
            </block>
            <block type="looks_setsizeto">
                <value name="SIZE">
                    <shadow type="math_number">
                        <field name="NUM">100</field>
                    </shadow>
                </value>
            </block>
        `}
        ${blockSeparator}
        <block type="looks_changeeffectby">
            <value name="CHANGE">
                <shadow type="math_number">
                    <field name="NUM">25</field>
                </shadow>
            </value>
        </block>
        <block type="looks_seteffectto">
            <value name="VALUE">
                <shadow type="math_number">
                    <field name="NUM">0</field>
                </shadow>
            </value>
        </block>
        <block type="looks_cleargraphiceffects"/>
        ${blockSeparator}
        ${isStage ? '' : `
            <block type="looks_show"/>
            <block type="looks_hide"/>
        ${blockSeparator}
            <block type="looks_gotofrontback"/>
            <block type="looks_goforwardbackwardlayers">
                <value name="NUM">
                    <shadow type="math_integer">
                        <field name="NUM">1</field>
                    </shadow>
                </value>
            </block>
        `}
        ${isStage ? `
            <block id="backdropnumbername" type="looks_backdropnumbername"/>
        ` : `
            <block id="${targetId}_costumenumbername" type="looks_costumenumbername"/>
            <block id="backdropnumbername" type="looks_backdropnumbername"/>
            <block id="${targetId}_size" type="looks_size"/>
        `}
        ${categorySeparator}
    </category>
    `;
};

const sound = function (isStage, targetId, soundName) {
    return `
    <category name="%{BKY_CATEGORY_SOUND}" id="sound" colour="#D65CD6" secondaryColour="#BD42BD">
        <block id="${targetId}_sound_playuntildone" type="sound_playuntildone">
            <value name="SOUND_MENU">
                <shadow type="sound_sounds_menu">
                    <field name="SOUND_MENU">${soundName}</field>
                </shadow>
            </value>
        </block>
        <block id="${targetId}_sound_play" type="sound_play">
            <value name="SOUND_MENU">
                <shadow type="sound_sounds_menu">
                    <field name="SOUND_MENU">${soundName}</field>
                </shadow>
            </value>
        </block>
        <block type="sound_stopallsounds"/>
        ${blockSeparator}
        <block type="sound_changeeffectby">
            <value name="VALUE">
                <shadow type="math_number">
                    <field name="NUM">10</field>
                </shadow>
            </value>
        </block>
        <block type="sound_seteffectto">
            <value name="VALUE">
                <shadow type="math_number">
                    <field name="NUM">100</field>
                </shadow>
            </value>
        </block>
        <block type="sound_cleareffects"/>
        ${blockSeparator}
        <block type="sound_changevolumeby">
            <value name="VOLUME">
                <shadow type="math_number">
                    <field name="NUM">-10</field>
                </shadow>
            </value>
        </block>
        <block type="sound_setvolumeto">
            <value name="VOLUME">
                <shadow type="math_number">
                    <field name="NUM">100</field>
                </shadow>
            </value>
        </block>
        <block id="${targetId}_volume" type="sound_volume"/>
        ${categorySeparator}
    </category>
    `;
};

const events = function (isStage) {
    return `
    <category name="%{BKY_CATEGORY_EVENTS}" id="events" colour="#FFD500" secondaryColour="#CC9900">
        <block type="event_whenflagclicked"/>
        <block type="event_whenkeypressed">
        </block>
        ${isStage ? `
            <block type="event_whenstageclicked"/>
        ` : `
            <block type="event_whenthisspriteclicked"/>
        `}
        <block type="event_whenbackdropswitchesto">
        </block>
        ${blockSeparator}
        <block type="event_whengreaterthan">
            <value name="VALUE">
                <shadow type="math_number">
                    <field name="NUM">10</field>
                </shadow>
            </value>
        </block>
        ${blockSeparator}
        <block type="event_whenbroadcastreceived">
        </block>
        <block type="event_broadcast">
            <value name="BROADCAST_INPUT">
                <shadow type="event_broadcast_menu"></shadow>
            </value>
        </block>
        <block type="event_broadcastandwait">
            <value name="BROADCAST_INPUT">
              <shadow type="event_broadcast_menu"></shadow>
            </value>
        </block>
        ${categorySeparator}
    </category>
    `;
};

const control = function (isStage) {
    return `
    <category name="%{BKY_CATEGORY_CONTROL}" id="control" colour="#FFAB19" secondaryColour="#CF8B17">
        <block type="control_wait">
            <value name="DURATION">
                <shadow type="math_positive_number">
                    <field name="NUM">1</field>
                </shadow>
            </value>
        </block>
        ${blockSeparator}
        <block type="control_repeat">
            <value name="TIMES">
                <shadow type="math_whole_number">
                    <field name="NUM">10</field>
                </shadow>
            </value>
        </block>
        <block id="forever" type="control_forever"/>
        ${blockSeparator}
        <block type="control_if"/>
        <block type="control_if_else"/>
        <block id="wait_until" type="control_wait_until"/>
        <block id="repeat_until" type="control_repeat_until"/>
        ${blockSeparator}
        <block type="control_stop"/>
        ${blockSeparator}
        ${isStage ? `
            <block type="control_create_clone_of">
                <value name="CLONE_OPTION">
                    <shadow type="control_create_clone_of_menu"/>
                </value>
            </block>
        ` : `
            <block type="control_start_as_clone"/>
            <block type="control_create_clone_of">
                <value name="CLONE_OPTION">
                    <shadow type="control_create_clone_of_menu"/>
                </value>
            </block>
            <block type="control_delete_this_clone"/>
        `}
        ${categorySeparator}
    </category>
    `;
};

const sensing = function (isStage) {
    const name = ScratchBlocks.ScratchMsgs.translate('SENSING_ASK_TEXT', 'What\'s your name?');
    return `
    <category name="%{BKY_CATEGORY_SENSING}" id="sensing" colour="#4CBFE6" secondaryColour="#2E8EB8">
        ${isStage ? '' : `
            <block type="sensing_touchingobject">
                <value name="TOUCHINGOBJECTMENU">
                    <shadow type="sensing_touchingobjectmenu"/>
                </value>
            </block>
            <block type="sensing_touchingcolor">
                <value name="COLOR">
                    <shadow type="colour_picker"/>
                </value>
            </block>
            <block type="sensing_coloristouchingcolor">
                <value name="COLOR">
                    <shadow type="colour_picker"/>
                </value>
                <value name="COLOR2">
                    <shadow type="colour_picker"/>
                </value>
            </block>
            <block type="sensing_distanceto">
                <value name="DISTANCETOMENU">
                    <shadow type="sensing_distancetomenu"/>
                </value>
            </block>
            ${blockSeparator}
        `}
        <block id="askandwait" type="sensing_askandwait">
            <value name="QUESTION">
                <shadow type="text">
                    <field name="TEXT">${name}</field>
                </shadow>
            </value>
        </block>
        <block id="answer" type="sensing_answer"/>
        ${blockSeparator}
        <block type="sensing_keypressed">
            <value name="KEY_OPTION">
                <shadow type="sensing_keyoptions"/>
            </value>
        </block>
        <block type="sensing_mousedown"/>
        <block type="sensing_mousex"/>
        <block type="sensing_mousey"/>
        ${isStage ? '' : `
            ${blockSeparator}
            '<block type="sensing_setdragmode" id="sensing_setdragmode"></block>'+
            ${blockSeparator}
        `}
        ${blockSeparator}
        <block id="loudness" type="sensing_loudness"/>
        ${blockSeparator}
        <block id="timer" type="sensing_timer"/>
        <block type="sensing_resettimer"/>
        ${blockSeparator}
        <block id="of" type="sensing_of">
            <value name="OBJECT">
                <shadow id="sensing_of_object_menu" type="sensing_of_object_menu"/>
            </value>
        </block>
        ${blockSeparator}
        <block id="current" type="sensing_current"/>
        <block type="sensing_dayssince2000"/>
        ${blockSeparator}
        <block type="sensing_username"/>
        ${categorySeparator}
    </category>
    `;
};

const operators = function () {
    const apple = ScratchBlocks.ScratchMsgs.translate('OPERATORS_JOIN_APPLE', 'apple');
    const banana = ScratchBlocks.ScratchMsgs.translate('OPERATORS_JOIN_BANANA', 'banana');
    const letter = ScratchBlocks.ScratchMsgs.translate('OPERATORS_LETTEROF_APPLE', 'a');
    return `
    <category name="%{BKY_CATEGORY_OPERATORS}" id="operators" colour="#40BF4A" secondaryColour="#389438">
        <block type="operator_add">
            <value name="NUM1">
                <shadow type="math_number">
                    <field name="NUM"/>
                </shadow>
            </value>
            <value name="NUM2">
                <shadow type="math_number">
                    <field name="NUM"/>
                </shadow>
            </value>
        </block>
        <block type="operator_subtract">
            <value name="NUM1">
                <shadow type="math_number">
                    <field name="NUM"/>
                </shadow>
            </value>
            <value name="NUM2">
                <shadow type="math_number">
                    <field name="NUM"/>
                </shadow>
            </value>
        </block>
        <block type="operator_multiply">
            <value name="NUM1">
                <shadow type="math_number">
                    <field name="NUM"/>
                </shadow>
            </value>
            <value name="NUM2">
                <shadow type="math_number">
                    <field name="NUM"/>
                </shadow>
            </value>
        </block>
        <block type="operator_divide">
            <value name="NUM1">
                <shadow type="math_number">
                    <field name="NUM"/>
                </shadow>
            </value>
            <value name="NUM2">
                <shadow type="math_number">
                    <field name="NUM"/>
                </shadow>
            </value>
        </block>
        ${blockSeparator}
        <block type="operator_random">
            <value name="FROM">
                <shadow type="math_number">
                    <field name="NUM">1</field>
                </shadow>
            </value>
            <value name="TO">
                <shadow type="math_number">
                    <field name="NUM">10</field>
                </shadow>
            </value>
        </block>
        ${blockSeparator}
        <block type="operator_gt">
            <value name="OPERAND1">
                <shadow type="text">
                    <field name="TEXT"/>
                </shadow>
            </value>
            <value name="OPERAND2">
                <shadow type="text">
                    <field name="TEXT">50</field>
                </shadow>
            </value>
        </block>
        <block type="operator_lt">
            <value name="OPERAND1">
                <shadow type="text">
                    <field name="TEXT"/>
                </shadow>
            </value>
            <value name="OPERAND2">
                <shadow type="text">
                    <field name="TEXT">50</field>
                </shadow>
            </value>
        </block>
        <block type="operator_equals">
            <value name="OPERAND1">
                <shadow type="text">
                    <field name="TEXT"/>
                </shadow>
            </value>
            <value name="OPERAND2">
                <shadow type="text">
                    <field name="TEXT">50</field>
                </shadow>
            </value>
        </block>
        ${blockSeparator}
        <block type="operator_and"/>
        <block type="operator_or"/>
        <block type="operator_not"/>
        ${blockSeparator}
        <block type="operator_join">
            <value name="STRING1">
                <shadow type="text">
                    <field name="TEXT">${apple} </field>
                </shadow>
            </value>
            <value name="STRING2">
                <shadow type="text">
                    <field name="TEXT">${banana}</field>
                </shadow>
            </value>
        </block>
        <block type="operator_letter_of">
            <value name="LETTER">
                <shadow type="math_whole_number">
                    <field name="NUM">1</field>
                </shadow>
            </value>
            <value name="STRING">
                <shadow type="text">
                    <field name="TEXT">${apple}</field>
                </shadow>
            </value>
        </block>
        <block type="operator_length">
            <value name="STRING">
                <shadow type="text">
                    <field name="TEXT">${apple}</field>
                </shadow>
            </value>
        </block>
        <block type="operator_contains" id="operator_contains">
          <value name="STRING1">
            <shadow type="text">
              <field name="TEXT">${apple}</field>
            </shadow>
          </value>
          <value name="STRING2">
            <shadow type="text">
              <field name="TEXT">${letter}</field>
            </shadow>
          </value>
        </block>
        ${blockSeparator}
        <block type="operator_mod">
            <value name="NUM1">
                <shadow type="math_number">
                    <field name="NUM"/>
                </shadow>
            </value>
            <value name="NUM2">
                <shadow type="math_number">
                    <field name="NUM"/>
                </shadow>
            </value>
        </block>
        <block type="operator_round">
            <value name="NUM">
                <shadow type="math_number">
                    <field name="NUM"/>
                </shadow>
            </value>
        </block>
        ${blockSeparator}
        <block type="operator_mathop">
            <value name="NUM">
                <shadow type="math_number">
                    <field name="NUM"/>
                </shadow>
            </value>
        </block>
        ${blockSeparator}
        <block type="operator_square">
            <value name="NUM">
                <shadow type="math_number">
                    <field name="NUM"/>
                </shadow>
            </value>
        </block>
        ${blockSeparator}
        <block type="operator_square_root">
            <value name="NUM">
                <shadow type="math_number">
                    <field name="NUM"/>
                </shadow>
            </value>
        </block>
        ${categorySeparator}
    </category>
    `;
};

const variables = function () {
    return `
    <category
        name="%{BKY_CATEGORY_VARIABLES}"
        id="variables"
        colour="#FF8C1A"
        secondaryColour="#DB6E00"
        custom="VARIABLE">
    </category>
    `;
};

const myBlocks = function () {
    return `
    <category
        name="%{BKY_CATEGORY_MYBLOCKS}"
        id="myBlocks"
        colour="#FF6680"
        secondaryColour="#FF4D6A"
        custom="PROCEDURE">
    </category>
    `;
};

const xmlOpen = '<xml style="display: none">';
const xmlClose = '</xml>';

/**
 * @param {!boolean} isStage - Whether the toolbox is for a stage-type target.
 * @param {?string} targetId - The current editing target
 * @param {?Array.<object>} categoriesXML - optional array of `{id,xml}` for categories. This can include both core
 * and other extensions: core extensions will be placed in the normal Scratch order; others will go at the bottom.
 * @property {string} id - the extension / category ID.
 * @property {string} xml - the `<category>...</category>` XML for this extension / category.
 * @param {?string} costumeName - The name of the default selected costume dropdown.
 * @param {?string} backdropName - The name of the default selected backdrop dropdown.
 * @param {?string} soundName -  The name of the default selected sound dropdown.
 * @returns {string} - a ScratchBlocks-style XML document for the contents of the toolbox.
 */
const makeToolboxXML = function (isStage, targetId, categoriesXML = [],
    costumeName = '', backdropName = '', soundName = '') {
    const gap = [categorySeparator];

    costumeName = xmlEscape(costumeName);
    backdropName = xmlEscape(backdropName);
    soundName = xmlEscape(soundName);

    categoriesXML = categoriesXML.slice();
    const moveCategory = categoryId => {
        const index = categoriesXML.findIndex(categoryInfo => categoryInfo.id === categoryId);
        if (index >= 0) {
            // remove the category from categoriesXML and return its XML
            const [categoryInfo] = categoriesXML.splice(index, 1);
            return categoryInfo.xml;
        }
        // return `undefined`
    };
    const motionXML = moveCategory('motion') || motion(isStage, targetId);
    const looksXML = moveCategory('looks') || looks(isStage, targetId, costumeName, backdropName);
    const soundXML = moveCategory('sound') || sound(isStage, targetId, soundName);
    const eventsXML = moveCategory('event') || events(isStage, targetId);
    const controlXML = moveCategory('control') || control(isStage, targetId);
    const sensingXML = moveCategory('sensing') || sensing(isStage, targetId);
    const operatorsXML = moveCategory('operators') || operators(isStage, targetId);
    const variablesXML = moveCategory('data') || variables(isStage, targetId);
    const myBlocksXML = moveCategory('procedures') || myBlocks(isStage, targetId);

    const everything = [
        xmlOpen,
        motionXML, gap,
        looksXML, gap,
        soundXML, gap,
        eventsXML, gap,
        controlXML, gap,
        sensingXML, gap,
        operatorsXML, gap,
        variablesXML, gap,
        myBlocksXML
    ];

    for (const extensionCategory of categoriesXML) {
        everything.push(gap, extensionCategory.xml);
    }

    everything.push(xmlClose);
    return everything.join('\n');
};

export default makeToolboxXML;
