function getDaysAgo(n) {
  const timestamp = Date.now() - (n * 24 * 60 * 60 * 1000);
  const date = new Date(timestamp);
  
  const year = date.getFullYear();
  const month = String(date.getMonth() + 1).padStart(2, '0');
  const day = String(date.getDate()).padStart(2, '0');
  
  return `${year}-${month}-${day}`;
}

function csvToArray(csvString) {
  const lines = csvString.split('\n');
  const result = [];
  
  for (let line of lines) {
    // 跳过空行
    if (line.trim() === '') continue;
    
    // 按逗号分割，并去除每个字段的空白
    const row = line.split(',').map(field => field.trim());
    result.push(row);
  }
  
  return result;
}

function arrayToCSV(array) {
  return array.map(row => 
    row.map(field => String(field)).join(',')
  ).join('\n');
}


function creatToday(fileList) {
  for (let index = 1; index < fileList.length - 1; index++) {
    fileList[index][2] = fileList[index][5]
    fileList[index][3] = fileList[index][6]
    fileList[index][4] = fileList[index][7]
    fileList[index][5] = ""
    fileList[index][6] = ""
    fileList[index][7] = ""
    fileList[index][8] = ""
    fileList[index][9] = ""
    fileList[index][10] = ""
  }
  const fileData = {
    filename: getDaysAgo(0) + '.csv',
    content: arrayToCSV(fileList),
    encoding: "gb2312"
  };

  // 调用保存方法
  window.electronAPI.saveFile(fileData).then(result => {
    if (result.success) {
      console.log('文件保存成功:', result.path);
    } else {
      console.error('文件保存失败:', result.error);
    }
  });
}


function saveFile(adtaArr, next) {
  // 保存数据
  const fileData = {
    filename: getDaysAgo(0) + '.csv',
    content: arrayToCSV(adtaArr),
    encoding: "gb2312"
  };

  // 调用保存方法
  window.electronAPI.saveFile(fileData).then(result => {
    if (result.success) {
      console.log('文件保存成功:', result.path);
      setTimeout(() => {
        if (next) checkData(adtaArr, next)
      }, 1000);
    } else {
      console.error('文件保存失败:', result.error);
    }
  });
}

function cutString (original, before, after, index) {
  index = index || 0;
  if (typeof index === "number") {
    const P = original.indexOf(before, index);
    if (P > -1) {
      if (after) {
        const f = original.indexOf(after, P + before.length);
        return (f>-1)? original.slice(P + before.toString().length, f):console.error("Tool [在文本中找不到 参数三 "+after+"]");
      } else {
        return original.slice(P + before.toString().length);
      }
    } else {
      console.error("Tool [在文本中找不到 参数一 " + before + "]");
      return
    }
  } else {
    console.error("Tool [sizeTransition:" + index + "不是一个整数!]");
  }
}

function checkData (adtaArr) {
  for (let index = 0; index < adtaArr.length; index++) {
    const element = adtaArr[index];
    console.log(element)
    if (element[1].includes('https://') && element[5] === '') {
      console.log(element[1])
      if (location.href.slice(0, 40) == element[1].slice(0, 40)) {
        setTimeout(() => {
          document.querySelector('.yt-truncated-text__absolute-button').click()
          setTimeout(() => {
            let pdInfo = document.querySelector('.style-scope.ytd-about-channel-renderer').innerText
            let bfsl = parseInt(cutString(pdInfo,'视频\n\n\t', '次观看'))
            let spsl = parseInt(cutString(pdInfo,'订阅者\n\n\t', '个视频'))
            let dyrs = parseInt(cutString(pdInfo,'注册\n\n\t', '位订阅者'))
            bfsl = bfsl ? bfsl : 0
            spsl = spsl ? spsl : 0
            dyrs = dyrs ? dyrs : 0
            console.log(bfsl, spsl, dyrs)
            adtaArr[index][5] = bfsl
            adtaArr[index][6] = spsl
            adtaArr[index][7] = dyrs
            adtaArr[index][8] = bfsl - parseInt(adtaArr[index][2])
            adtaArr[index][9] = spsl - parseInt(adtaArr[index][3])
            adtaArr[index][10] = dyrs - parseInt(adtaArr[index][4])
            saveFile(adtaArr, true)
          }, 3000);
        }, 2000);
      } else {
        location.href = element[1]
      }
      
      return
    }
  }
  // 汇总计算
  adtaArr[adtaArr.length - 1][2] = 0
  adtaArr[adtaArr.length - 1][3] = 0
  adtaArr[adtaArr.length - 1][4] = 0
  adtaArr[adtaArr.length - 1][5] = 0
  adtaArr[adtaArr.length - 1][6] = 0
  adtaArr[adtaArr.length - 1][7] = 0
  adtaArr[adtaArr.length - 1][8] = 0
  adtaArr[adtaArr.length - 1][9] = 0
  adtaArr[adtaArr.length - 1][10] = 0
  for (let index = 1; index < adtaArr.length - 1; index++) {
    const element = adtaArr[index];
    adtaArr[adtaArr.length - 1][2] += parseInt(element[2])
    adtaArr[adtaArr.length - 1][3] += parseInt(element[3])
    adtaArr[adtaArr.length - 1][4] += parseInt(element[4])
    adtaArr[adtaArr.length - 1][5] += parseInt(element[5])
    adtaArr[adtaArr.length - 1][6] += parseInt(element[6])
    adtaArr[adtaArr.length - 1][7] += parseInt(element[7])
    adtaArr[adtaArr.length - 1][8] += parseInt(element[8])
    adtaArr[adtaArr.length - 1][9] += parseInt(element[9])
    adtaArr[adtaArr.length - 1][10] += parseInt(element[10])
  }
  saveFile(adtaArr, false)
  alert('所有项目已经检查完!')
}


// 调用保存方法
window.electronAPI.readFile({filename: getDaysAgo(0) + '.csv', encoding: "gb2312"}).then(result => {
  if (result.success) {
    console.log(result.content);
    // 如果内容是空的，则读取昨天的
    if (result.content == '') {
      window.electronAPI.readFile({filename: getDaysAgo(1) + '.csv', encoding: "gb2312"}).then(result2 => {
        if (result2.success) {
          console.log(result2.content);
          // 如果内容是空的，则读取昨天的
          if (result2.content == '') {
            alert('缺少昨天的数据!')
          } else {
            let fileData = csvToArray(result2.content)
            creatToday(fileData)
            console.log(fileData)
            checkData(fileData)
          }
        } else {
          console.error('文件读取失败:', result2.error);
        }
      });
    } else {
      // 读取加载文件
      let fileData = csvToArray(result.content)
      console.log(fileData)
      checkData(fileData)
    }
  } else {
    console.error('文件读取失败:', result.error);
  }
});