import { createElementEvent } from "./View.js";

let curx = 0;
let cury = 0;
let rowx;
let columny;

let positions = {
    "c1": { "x": 64, "name": "第一拍" },
    "c2": { "x": 88, "name": "第二拍" },
    "c3": { "x": 112, "name": "第三拍" },
    "c4": { "x": 136, "name": "第四拍" },
    "c5": { "x": 160, "name": "第五拍" },
    "c6": { "x": 184, "name": "第六拍" },
    "c7": { "x": 249, "name": "第七拍" },
    "ccharacter": { "x": 35, "name": "角色" },
    "ccenter": { "x": 176, "name": "中心" },
    "cheart": { "x": 317, "name": "心" },
    "r1": { "y": 162, "name": "四轨时的第四轨" },
    "r2": { "y": 141, "name": "三轨时的第三轨" },
    "r3": { "y": 120, "name": "二轨时的第一轨/四轨时的第三轨" },
    "r4": { "y": 99, "name": "一轨时的第一轨/三轨时的第二轨" },
    "r5": { "y": 78, "name": "二轨时的第二轨/四轨时的第二轨" },
    "r6": { "y": 57, "name": "三轨时的第一轨" },
    "r7": { "y": 36, "name": "四轨时的第一轨" },
}

function themePosition() {
    let theme_positions = document.getElementById("theme-positions");
    if (!theme_positions) return;
    let perx = theme_positions.querySelector(".per>span.x");
    let pery = theme_positions.querySelector(".per>span.y");
    let pxx = theme_positions.querySelector(".px>span.x");
    let pxy = theme_positions.querySelector(".px>span.y");
    let infobox = theme_positions.querySelector(".infobox");
    let selectbox = theme_positions.querySelector(".selectbox");
    let other = theme_positions.querySelector(".other");
    perx.innerText = "100%";
    pery.innerText = "100%";
    pxx.innerText = "352px";
    pxy.innerText = "198px";
    infobox.style.right = "calc(10px)";
    infobox.style.top = "calc(10px)";
    selectbox.style.left = "50%";
    selectbox.style.bottom = "50%";
    selectbox.style.width = "0";
    selectbox.style.height = "0";
    other.innerText = "";
    theme_positions.addEventListener("mouseenter", function (event) {
    });
    theme_positions.addEventListener("mousemove", function (event) {
        let x = event.clientX - theme_positions.getBoundingClientRect().left;
        let y = event.clientY - theme_positions.getBoundingClientRect().top;
        let width = theme_positions.offsetWidth;
        let height = theme_positions.offsetHeight;

        let x_percent = parseFloat(((x / width) * 100).toFixed(2));
        let y_percent = parseFloat(((y / height) * 100).toFixed(2));

        x = parseFloat((x_percent * 3.52).toFixed(0));
        y = parseFloat((y_percent * 1.98).toFixed(0));

        rowx = null;
        columny = null;
        for (let key in positions) {
            if (positions[key].x !== null && Math.abs(x - positions[key].x) < 5)
                rowx = positions[key].x;
            if (positions[key].y !== null && Math.abs(y - positions[key].y) < 5)
                columny = positions[key].y;
        }

        if (rowx) {
            perx.innerText = (rowx / 3.52).toFixed(2) + "%"
            perx.classList.add("c")
            pxx.innerText = rowx + "px"
            pxx.classList.add("c")
        }
        else {
            perx.innerText = x_percent.toFixed(2) + "%"
            perx.classList.remove("c")
            pxx.innerText = x + "px"
            pxx.classList.remove("c")
        }
        if (columny) {
            pery.innerText = (100 - columny / 1.98).toFixed(2) + "%"
            pery.classList.add("c")
            pxy.innerText = 198 - columny + "px"
            pxy.classList.add("c")
        }
        else {
            pery.innerText = (100 - y_percent).toFixed(2) + "%"
            pery.classList.remove("c")
            pxy.innerText = 198 - y + "px"
            pxy.classList.remove("c")
        }
        infobox.style.right = "calc(" + (100 - x_percent) + "% + 10px)";
        infobox.style.top = "calc(" + (y_percent) + "% + 10px)";
        selectbox.style.left = rowx ? (rowx / 3.52 - 3.41) + "%" : columny ? "0" : "calc(" + x_percent + "% - 3px";
        selectbox.style.bottom = columny ? (100 - columny / 1.98 - 5.305) + "%" : rowx ? "0" : "calc(" + (100 - y_percent) + "% - 3px)";
        selectbox.style.width = rowx ? "6.82%" : columny ? "100%" : "6px";
        selectbox.style.height = columny ? "10.61%" : rowx ? "100%" : "6px";
        let rowname = rowx ? positions[Object.keys(positions).find(key => positions[key].x === rowx)].name : "";
        let columnname = columny ? positions[Object.keys(positions).find(key => positions[key].y === columny)].name : "";
        theme_positions.querySelector(".other").innerText = rowname && columnname ? columnname + "上的" + rowname : rowname ? rowname : columnname ? columnname : "";
    });
    theme_positions.addEventListener("mouseleave", function (event) {
        perx.innerText = "100%";
        pery.innerText = "100%";
        pxx.innerText = "352px";
        pxy.innerText = "198px";
        infobox.style.right = "calc(10px)";
        infobox.style.top = "calc(10px)";
        selectbox.style.left = "50%";
        selectbox.style.bottom = "50%";
        selectbox.style.width = "0";
        selectbox.style.height = "0";
        perx.classList.remove("c")
        pery.classList.remove("c")
        pxx.classList.remove("c")
        pxy.classList.remove("c")
        other.innerText = "";
    });

}

function rdview() {
    let rdview = document.getElementsByClassName("rdview")[0];
    if (!rdview) return;
    let rdcanvas = rdview.querySelector(".canvas");
    let textarea = rdview.querySelector("textarea.area");
    let number = rdview.querySelector(".number");
    const textareaStyles = window.getComputedStyle(textarea);
    [
        'fontFamily', 'fontSize', 'fontWeight',
        'letterSpacing', 'lineHeight', 'padding',
    ].forEach(property => {
        number.style[property] = textareaStyles[property];
    });
    const canvas = document.createElement('canvas');
    const context = canvas.getContext('2d');
    const font = `${textareaStyles.fontSize} ${textareaStyles.fontFamily}`;
    context.font = font;
    function calcStringLines(sentence, width) {
        if (!width) return 0;
        const words = sentence.split('');
        let lineCount = 0;

        let currentLine = '';
        for (let i = 0; i < words.length; i++) {
            const wordWidth = context.measureText(words[i]).width;
            const lineWidth = context.measureText(currentLine).width;
            if (lineWidth + wordWidth > width) {
                lineCount++;
                currentLine = words[i];
            } else {
                currentLine += words[i];
            }
        }
        if (currentLine.trim() !== '') lineCount++;
        return lineCount;
    }
    function calcLines() {
        const lines = textarea.value.split('\n');
        const textareaWidth = textarea.getBoundingClientRect().width;
        const textareaScrollWidth = textareaWidth - textarea.clientWidth;
        const parseNumber = (v) => v.endsWith('px') ? parseInt(v.slice(0, -2), 10) : 0;
        const textareaPaddingLeft = parseNumber(textareaStyles.paddingLeft);
        const textareaPaddingRight = parseNumber(textareaStyles.paddingRight);
        const textareaContentWidth = textareaWidth - textareaPaddingLeft - textareaPaddingRight - textareaScrollWidth;
        const numLines = lines.map(lineString => calcStringLines(lineString, textareaContentWidth));
        let lineNumbers = [];
        let i = 1;
        while (numLines.length > 0) {
            const numLinesOfSentence = numLines.shift();
            lineNumbers.push(i);
            if (numLinesOfSentence > 1) {
                Array(numLinesOfSentence - 1)
                    .fill('')
                    .forEach((_) => lineNumbers.push(''));
            }
            i++;
        }
        return lineNumbers;
    }
    function initLineNumbers() {
        const lines = calcLines();
        const lineDoms = Array.from({
            length: lines.length,
        }, (_, i) => `<div>${lines[i] || '&nbsp;'}</div>`);
        number.innerHTML = lineDoms.join('');
    }
    function initCanvas() {
        const lang = textarea.value.split('\n')[0]
        const code = textarea.value.split('\n').slice(1).join('\n')
        rdcanvas.innerHTML = RDViewRender(lang, code)
    }
    initCanvas()
    initLineNumbers()
    textarea.addEventListener('input', initLineNumbers);
    textarea.addEventListener('input', initCanvas);
}

function rdview2() {
    let rdview = document.getElementsByClassName("rdview2")[0];
    if (!rdview) return;
    let rdcanvas = rdview.querySelector(".canvas");
    let textarea = rdview.querySelector("textarea.area");
    let number = rdview.querySelector(".number");
    const textareaStyles = window.getComputedStyle(textarea);
    [
        'fontFamily', 'fontSize', 'fontWeight',
        'letterSpacing', 'lineHeight', 'padding',
    ].forEach(property => {
        number.style[property] = textareaStyles[property];
    });
    const canvas = document.createElement('canvas');
    const context = canvas.getContext('2d');
    const font = `${textareaStyles.fontSize} ${textareaStyles.fontFamily}`;
    context.font = font;
    function calcStringLines(sentence, width) {
        if (!width) return 0;
        const words = sentence.split('');
        let lineCount = 0;

        let currentLine = '';
        for (let i = 0; i < words.length; i++) {
            const wordWidth = context.measureText(words[i]).width;
            const lineWidth = context.measureText(currentLine).width;
            if (lineWidth + wordWidth > width) {
                lineCount++;
                currentLine = words[i];
            } else {
                currentLine += words[i];
            }
        }
        if (currentLine.trim() !== '') lineCount++;
        return lineCount;
    }
    function calcLines() {
        const lines = textarea.value.split('\n');
        const textareaWidth = textarea.getBoundingClientRect().width;
        const textareaScrollWidth = textareaWidth - textarea.clientWidth;
        const parseNumber = (v) => v.endsWith('px') ? parseInt(v.slice(0, -2), 10) : 0;
        const textareaPaddingLeft = parseNumber(textareaStyles.paddingLeft);
        const textareaPaddingRight = parseNumber(textareaStyles.paddingRight);
        const textareaContentWidth = textareaWidth - textareaPaddingLeft - textareaPaddingRight - textareaScrollWidth;
        const numLines = lines.map(lineString => calcStringLines(lineString, textareaContentWidth));
        let lineNumbers = [];
        let i = 1;
        while (numLines.length > 0) {
            const numLinesOfSentence = numLines.shift();
            lineNumbers.push(i);
            if (numLinesOfSentence > 1) {
                Array(numLinesOfSentence - 1)
                    .fill('')
                    .forEach((_) => lineNumbers.push(''));
            }
            i++;
        }
        return lineNumbers;
    }
    function initLineNumbers() {
        const lines = calcLines();
        const lineDoms = Array.from({
            length: lines.length,
        }, (_, i) => `<div>${lines[i] || '&nbsp;'}</div>`);
        number.innerHTML = lineDoms.join('');
    }
    function initCanvas() {
        // const lang = textarea.value.split('\n')[0]
        // const code = textarea.value.split('\n').slice(1).join('\n')
        // rdcanvas.innerHTML = RDViewRender(lang, code)
        const objs = JSON.parse(`[${textarea.value}]`);
        const eventStyle = {"scale": 2.0, "showDuration": false };
        let maxy = 0;
        for (let obj of objs) {
            const style = {... eventStyle, enabled: obj.active ?? true };
            const elem = createElementEvent(obj, style);
            elem.eventStyle = style;
            elem.style.position = "absolute";
            elem.style.left = `${((((obj.bar ?? 1) - 1) * 8) + (obj.beat ?? 1) - 1) * 14 * eventStyle.scale}px`;
            elem.style.top = `${(obj.y ?? obj.row ?? 0) * 14 * eventStyle.scale}px`;
            if (((obj.y ?? obj.row ?? 0) * 14 * eventStyle.scale) + elem.offsetHeight > maxy) {
                maxy = ((obj.y ?? obj.row ?? 0) * 14 * eventStyle.scale) + elem.offsetHeight;
            }
            elem.addEventListener("mousedown", (event) => {
                const eStyle = elem.eventStyle;
                eStyle.active = true;
                elem.onStateChange(eStyle);
            });
            elem.addEventListener("mouseover", (event) => {
                const eStyle = elem.eventStyle;
                eStyle.hover = true;
                elem.onStateChange(eStyle);
            });
            elem.addEventListener("mouseout", (event) => {
                const eStyle = elem.eventStyle;
                eStyle.hover = false;
                eStyle.active = false;
                elem.onStateChange(eStyle);
            });
            elem.addEventListener("mouseup", (event) => {
                const eStyle = elem.eventStyle;
                eStyle.active = false;
                elem.onStateChange(eStyle);
            });
            rdcanvas.style.position = "relative";
            rdcanvas.style.height = `${maxy + 4 * 14 * eventStyle.scale}px`;
            if (elem) {
                rdcanvas.appendChild(elem);
        }
        }
        //rdcanvas.innerHTML = RDView2Render(json);
    }
    initCanvas()
    initLineNumbers()
    textarea.addEventListener('input', initLineNumbers);
    textarea.addEventListener('input', initCanvas);
}

window.$docsify.plugins = [].concat(window.$docsify.plugins, function (hook) {
    hook.doneEach(function () {
        themePosition();
        rdview();
        rdview2();
        document.documentElement.scrollTop = document.body.scrollTop = 0;
    });
});

import("./docsify.min.js").then(() => {
    
});