// ==UserScript==
// @name         CF解题数据可视化
// @name:en      codeforces analytics
// @namespace    https://codeforces.com/profile/tongwentao
// @version      1.5.4
// @description  显示某人Codeforces每个难度过了多少题，每个标签占比，喜欢用什么语言过题，有什么题试过了但是没有通过。
// @description:en Analyse Codeforces profiles
// @author       tongwentao
// @match        https://codeforces.com/profile/*
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// @require https://cdn.jsdelivr.net/npm/echarts@5.4.2/dist/echarts.min.js
// @license MIT
// @downloadURL none
// ==/UserScript==

(function() {
  'use strict';
  function drawChart(res){
    drawRatingChart(res);
    drawTagsChart(res);
    drawLangChart(res);
    drawUnsolvedChart(res);
  }

  function drawRatingChart(res){
      var div='<div class="roundbox userActivityRoundBox borderTopRound borderBottomRound" id="ratingChart" style="height:400px;padding:2em 1em 0 1em;margin-top:1em;"></div>';
      document.getElementById('pageContent').insertAdjacentHTML('beforeend',div);
      var chartDom = document.getElementById('ratingChart');
      var myChart = echarts.init(chartDom);
      var option;
      var key;
      window.addEventListener('resize', function() {
        myChart.resize();
      });
      var xData=[];
      var yData=[];
      xData=Object.keys(res.rating);
      for(key in xData){
          yData.push(res.rating[xData[key]]);
      }
      option = {
        title: {
          text: 'Problem Ratings',
          left: 'center'
        },
          tooltip: {
              trigger: 'axis',
              axisPointer: {
                type: 'shadow'
              }
            },
            grid: {
              left: '3%',
              right: '4%',
              bottom: '3%',
              containLabel: true
            },
            xAxis: [
              {
                type: 'category',
                data: xData,
                axisTick: {
                  alignWithLabel: true
                }
              }
            ],
            yAxis: [
              {
                type: 'value'
              }
            ],
            series: [
              {
                name: 'solved',
                type: 'bar',
                barWidth: '60%',
                data: yData.map((value, index) => ({
                    value: value,
                    itemStyle: {
                        color: `hsl(${(index * 35) % 360}, 70%, 50%)`
                    }
                }))
              }
            ]
      };

      option && myChart.setOption(option);

  }
  function drawTagsChart(res){

    var div='<div class="roundbox userActivityRoundBox borderTopRound borderBottomRound" id="tagsChart" style="height:400px;padding:2em 1em 0 1em;margin-top:1em;"></div>';
    document.getElementById('pageContent').insertAdjacentHTML('beforeend',div);
    var chartDom = document.getElementById('tagsChart');
    var myChart = echarts.init(chartDom);
    var option;
    var data1=[];
    var key;
    window.addEventListener('resize', function() {
      myChart.resize();
    });
    for(key in res.tags){
      var tag=res.tags[key];
      data1.push({value:tag,name:key});
    }
    data1.sort(function(nextValue,currentValue){
      if(nextValue.value<currentValue.value)
        return 1;
      else if(nextValue.value>currentValue.value)
        return -1;
      return 0;
    });
    var data2=[];
    for(key in data1){
      data2.push(data1[key].name);
    }
    option = {
      title: {
        text: 'Tags Solved',
        left: 'center'
      },
      tooltip: {
        trigger: 'item',
        formatter: '{a} <br/>{b} : {c} ({d}%)'
      },
      legend: {
        type: 'scroll',
        orient: 'vertical',
        right: 10,
        top: 20,
        bottom: 20,
        data: data2,
        formatter:function(name){
            let singleData = option.series[0].data.filter(function(item){
                return item.name == name
            })
            return  name + ' : ' + singleData[0].value;
        },
      },
      series: [
        {
          name: 'tag',
          type: 'pie',
          radius: '55%',
          center: ['40%', '50%'],
          data: data1,
          emphasis: {
            itemStyle: {
              shadowBlur: 10,
              shadowOffsetX: 0,
              shadowColor: 'rgba(0, 0, 0, 0.5)'
            }
          }
        }
      ]
    };

    option && myChart.setOption(option);
  }

  function drawLangChart(res){
    var div='<div class="roundbox userActivityRoundBox borderTopRound borderBottomRound" id="langChart" style="height:400px;padding:2em 1em 0 1em;margin-top:1em;"></div>';
    document.getElementById('pageContent').insertAdjacentHTML('beforeend',div);
    var chartDom = document.getElementById('langChart');
    var myChart = echarts.init(chartDom);
    var option;
    var data1=[];
    var key;
    window.addEventListener('resize', function() {
      myChart.resize();
    });
    for(key in res.lang){
      var lang=res.lang[key];
      data1.push({value:lang,name:key});
    }
    data1.sort(function(nextValue,currentValue){
      if(nextValue.value<currentValue.value)
        return 1;
      else if(nextValue.value>currentValue.value)
        return -1;
      return 0;
    });
    var data2=[];
    for(key in data1){
      data2.push(data1[key].name);
    }
    option = {
      title: {
        text: 'Programming Language',
        left: 'center'
      },
      tooltip: {
        trigger: 'item',
        formatter: '{a} <br/>{b} : {c} ({d}%)'
      },
      legend: {
        type: 'scroll',
        orient: 'vertical',
        right: 10,
        top: 20,
        bottom: 20,
        data: data2,
        formatter:function(name){
          let singleData = option.series[0].data.filter(function(item){
              return item.name == name
          })
          return  name + ' : ' + singleData[0].value;
        },
      },
      series: [
        {
          name: 'lang',
          type: 'pie',
          radius: '55%',
          center: ['40%', '50%'],
          data: data1,
          emphasis: {
            itemStyle: {
              shadowBlur: 10,
              shadowOffsetX: 0,
              shadowColor: 'rgba(0, 0, 0, 0.5)'
            }
          }
        }
      ]
    };

    option && myChart.setOption(option);
  }

  function drawUnsolvedChart(res) {
  // 创建容器 div
  var div = '<div class="roundbox userActivityRoundBox borderTopRound borderBottomRound" id="unsolvedChart" style="padding: 1em; margin-top: 1em;"></div>';
  document.getElementById('pageContent').insertAdjacentHTML('beforeend', div);

  // 设置标题样式
  var header = `<h4 style="font-size: 1.2em; color: #333; font-weight: bold; margin-bottom: 0.5em;">Unsolved Problems (total: ${Object.keys(res.unsolved).length})</h4>`;
  document.getElementById('unsolvedChart').insertAdjacentHTML('beforeend', header);

  // 设置列表容器样式
  var listContainer = '<div style="display: flex; flex-wrap: wrap; gap: 10px;"></div>';
  document.getElementById('unsolvedChart').insertAdjacentHTML('beforeend', listContainer);

  // 逐个添加未解决的问题链接
  var unsolvedDiv = document.getElementById('unsolvedChart').lastChild;
  var key, contestId, problemIndex, problemLink;
  for (key in res.unsolved) {
    contestId = res.unsolved[key].contestId;
    problemIndex = res.unsolved[key].problemIndex;

    // 根据 contestId 判断链接类型（正常题目 or gym 题目）
    if (contestId < 10000) {
      problemLink = `<a href="https://codeforces.com/problemset/problem/${contestId}/${problemIndex}" target="_blank" style="text-decoration: none; color: #0073e6; padding: 0.3em 0.6em; border-radius: 5px; border: 1px solid #0073e6; font-size: 0.9em;">${key}</a>`;
    } else {
      problemLink = `<a href="https://codeforces.com/problemset/gymProblem/${contestId}/${problemIndex}" target="_blank" style="text-decoration: none; color: #0073e6; padding: 0.3em 0.6em; border-radius: 5px; border: 1px solid #0073e6; font-size: 0.9em;">${key}</a>`;
    }
    unsolvedDiv.insertAdjacentHTML('beforeend', problemLink);
  }
}

  var pathname = window.location.pathname;
var handle = pathname.substring(pathname.lastIndexOf('/') + 1, pathname.length);
var httpRequest = new XMLHttpRequest();

// 添加加载动画
var loadingDiv = `<div id="loadingAnimation" style="position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
                  font-size: 1.5em; color: #0073e6; text-align: center;">
                    <div class="spinner" style="margin-bottom: 10px; border: 4px solid #f3f3f3; border-top: 4px solid #0073e6; border-radius: 50%; width: 40px; height: 40px; animation: spin 1s linear infinite;"></div>
                    Loading...
                 </div>
                 <style>
                    @keyframes spin {
                      0% { transform: rotate(0deg); }
                      100% { transform: rotate(360deg); }
                    }
                 </style>`;
document.body.insertAdjacentHTML('beforeend', loadingDiv);

httpRequest.open('GET', 'https://codeforces.com/api/user.status?handle=' + handle, true);
httpRequest.send();
httpRequest.onreadystatechange = function () {
  if (httpRequest.readyState == 4) {
    // 移除加载动画
    var loadingElem = document.getElementById('loadingAnimation');
    if (loadingElem) {
      loadingElem.remove();
    }

    if (httpRequest.status == 200) {
      var json = JSON.parse(httpRequest.responseText);
      var result = json.result;
      var res = { rating: {}, tags: {}, lang: {}, unsolved: {} };
      var solved = {};
      var key;
      var contestId;
      var problemIndex;
      var problemId;
      for (key in result) {
        if (result[key].verdict === "OK") {
          var rating = result[key].problem.rating;
          var tags = result[key].problem.tags;
          var lang = result[key].programmingLanguage;
          if (rating in res.rating) {
            res.rating[rating]++;
          } else {
            res.rating[rating] = 1;
          }
          for (var key2 in tags) {
            var tag = tags[key2];
            if (tag in res.tags) {
              res.tags[tag]++;
            } else {
              res.tags[tag] = 1;
            }
          }
          if (lang in res.lang) {
            res.lang[lang]++;
          } else {
            res.lang[lang] = 1;
          }
          contestId = result[key].problem.contestId;
          problemIndex = result[key].problem.index;
          problemId = contestId + problemIndex;
          if (!(problemId in solved)) {
            solved[problemId] = { contestId: contestId, problemIndex: problemIndex };
          }
        }
      }
      for (key in result) {
        if (result[key].verdict !== "OK") {
          contestId = result[key].problem.contestId;
          problemIndex = result[key].problem.index;
          problemId = contestId + problemIndex;
          if (!(problemId in solved)) {
            res.unsolved[problemId] = { contestId: contestId, problemIndex: problemIndex };
          }
        }
      }
      console.log(res);
      drawChart(res);
    }
  }
};


})();