<template>
  <el-menu
    :active-text-color="settings.theme"
  >
  <router-link
    :style="activeStyle(tag)"
  >
</template>
<script>
export default {
  computed: {
    ...mapState(["settings"]),
  },
  methods: {
    activeStyle(tag) {
      if (!this.isActive(tag)) return {};
      return {
        "background-color": this.settings.theme,
        "border-color": this.settings.theme
      };
    },
},
}
</script>

<template>
  <el-color-picker
    v-model="theme"
    :predefine="['#409EFF', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
    class="theme-picker"
    popper-class="theme-picker-dropdown"
  />
</template>
<script>
const version = require('element-ui/package.json').version // element-ui version from node_modules
const ORIGINAL_THEME = '#409EFF' // default color
export default {
  data() {
    return {
      chalk: '', // content of theme-chalk css
      theme: ''
    }
  },
  computed: {
    // store 中的 theme 值
    defaultTheme() {
      return this.$store.state.settings.theme
    }
  },
  watch: {
    // 监听 store 中的 theme 值发生变化，修改 theme 值
    defaultTheme: {
      handler: function(val, oldVal) {
        this.theme = val
      },
      immediate: true
    },
    // 监听 theme 值发生变化
    async theme(val) {
      const oldVal = this.chalk ? this.theme : ORIGINAL_THEME
      if (typeof val !== 'string') return
      const themeCluster = this.getThemeCluster(val.replace('#', ''))
      // 此次改变时，上一次的颜色值，用来替换带有主题颜色值的 style 标签
      const originalCluster = this.getThemeCluster(oldVal.replace('#', ''))
      const $message = this.$message({
        message: '  Compiling the theme',
        customClass: 'theme-message',
        type: 'success',
        duration: 0,
        iconClass: 'el-icon-loading'
      })
      const getHandler = (variable, id) => {
        return () => {
          // 初始化时的主题颜色值，用来修改 element-ui 的 theme-chalk 文件中对应的值，因为每次改变并没有将新的值更新到 this.chalk，所以每次都是用初始值替换新的值
          const originalCluster = this.getThemeCluster(ORIGINAL_THEME.replace('#', ''))
          const newStyle = this.updateStyle(this[variable], originalCluster, themeCluster)
          let styleTag = document.getElementById(id)
          if (!styleTag) {
            styleTag = document.createElement('style')
            styleTag.setAttribute('id', id)
            document.head.appendChild(styleTag)
          }
          styleTag.innerText = newStyle
        }
      }
      // 用 this.chalk 保存下载的 element-ui 的 theme-chalk 样式文件
      if (!this.chalk) {
        const url = `https://unpkg.com/element-ui@${version}/lib/theme-chalk/index.css`
        await this.getCSSString(url, 'chalk')
      }
      const chalkHandler = getHandler('chalk', 'chalk-style')
      // 替换 this.chalk 样式文件中的主题相关颜色值，将新的内容赋给指定的 style 标签
      chalkHandler()
      // 找到页面中带有旧颜色值的 style 标签，替换其中的主题相关颜色值
      const styles = [].slice.call(document.querySelectorAll('style'))
        .filter(style => {
          const text = style.innerText
          return new RegExp(oldVal, 'i').test(text) && !/Chalk Variables/.test(text)
        })
      styles.forEach(style => {
        const { innerText } = style
        if (typeof innerText !== 'string') return
        style.innerText = this.updateStyle(innerText, originalCluster, themeCluster)
      })
      this.$emit('change', val)
      $message.close()
    }
  },
  methods: {
    updateStyle(style, oldCluster, newCluster) {
      let newStyle = style
      oldCluster.forEach((color, index) => {
        newStyle = newStyle.replace(new RegExp(color, 'ig'), newCluster[index])
      })
      return newStyle
    },
    getCSSString(url, variable) {
      return new Promise(resolve => {
        const xhr = new XMLHttpRequest()
        xhr.onreadystatechange = () => {
          if (xhr.readyState === 4 && xhr.status === 200) {
            this[variable] = xhr.responseText.replace(/@font-face{[^}]+}/, '')
            resolve()
          }
        }
        xhr.open('GET', url)
        xhr.send()
      })
    },
    getThemeCluster(theme) {
      const tintColor = (color, tint) => {
        let red = parseInt(color.slice(0, 2), 16)
        let green = parseInt(color.slice(2, 4), 16)
        let blue = parseInt(color.slice(4, 6), 16)
        if (tint === 0) { // when primary color is in its rgb space
          return [red, green, blue].join(',')
        } else {
          red += Math.round(tint * (255 - red))
          green += Math.round(tint * (255 - green))
          blue += Math.round(tint * (255 - blue))
          red = red.toString(16)
          green = green.toString(16)
          blue = blue.toString(16)
          return `#${red}${green}${blue}`
        }
      }
      const shadeColor = (color, shade) => {
        let red = parseInt(color.slice(0, 2), 16)
        let green = parseInt(color.slice(2, 4), 16)
        let blue = parseInt(color.slice(4, 6), 16)
        red = Math.round((1 - shade) * red)
        green = Math.round((1 - shade) * green)
        blue = Math.round((1 - shade) * blue)
        red = red.toString(16)
        green = green.toString(16)
        blue = blue.toString(16)
        return `#${red}${green}${blue}`
      }
      const clusters = [theme]
      for (let i = 0; i <= 9; i++) {
        clusters.push(tintColor(theme, Number((i / 10).toFixed(2))))
      }
      clusters.push(shadeColor(theme, 0.1))
      return clusters
    }
  }
}
</script>
<style>
.theme-message,
.theme-picker-dropdown {
  z-index: 99999 !important;
}
.theme-picker .el-color-picker__trigger {
  height: 26px !important;
  width: 26px !important;
  padding: 2px;
}
.theme-picker-dropdown .el-color-dropdown__link-btn {
  display: none;
}
</style>

<template>
  <iframe id="cms" class="content" src="/static/cms/index.html"></iframe>
</template>
<style scoped>
.content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  border: none;
}
</style>

// 原内容
<?js if (data.returns && returns.length) { ?>
<h5>Returns:</h5>
<?js if (returns.length > 1) { ?><ul><?js
    returns.forEach(function(r) { ?>
        <li><?js= self.partial('returns.tmpl', r) ?></li>
    <?js });
?></ul><?js } else {
    returns.forEach(function(r) { ?>
        <?js= self.partial('returns.tmpl', r) ?>
    <?js });
} } ?>
// 替换为
<?js if (data.returns && returns.length) { ?>
<h5>Returns:</h5>
<?js= this.partial('params.tmpl', returns) ?>
<?js } ?>

exports.handlers = {
  newDoclet: e => {
    // 修改对 return 的解析
    if (e.doclet.returns) {
      e.doclet.returns.forEach(item => {
        if (item.description) {
          const parseArr = item.description.split(' - ');
          if (parseArr.length > 1) {
            item.description = parseArr[1];
            item.name = parseArr[0];
          } else {
            item.description = parseArr[0];
          }
        }
      });
    }
  },
};