Site updated: 2024-08-04 07:20:57

js/search/algolia.js

@@ -0,0 +1,155 @@
+window.addEventListener('load', () => {
+  const openSearch = () => {
+    const bodyStyle = document.body.style
+    bodyStyle.width = '100%'
+    bodyStyle.overflow = 'hidden'
+    btf.animateIn(document.getElementById('search-mask'), 'to_show 0.5s')
+    btf.animateIn(document.querySelector('#algolia-search .search-dialog'), 'titleScale 0.5s')
+    setTimeout(() => { document.querySelector('#algolia-search .ais-SearchBox-input').focus() }, 100)
+
+    // shortcut: ESC
+    document.addEventListener('keydown', function f (event) {
+      if (event.code === 'Escape') {
+        closeSearch()
+        document.removeEventListener('keydown', f)
+      }
+    })
+  }
+
+  const closeSearch = () => {
+    const bodyStyle = document.body.style
+    bodyStyle.width = ''
+    bodyStyle.overflow = ''
+    btf.animateOut(document.querySelector('#algolia-search .search-dialog'), 'search_close .5s')
+    btf.animateOut(document.getElementById('search-mask'), 'to_hide 0.5s')
+  }
+
+  const searchClickFn = () => {
+    document.querySelector('#search-button > .search').addEventListener('click', openSearch)
+  }
+
+  const searchClickFnOnce = () => {
+    document.getElementById('search-mask').addEventListener('click', closeSearch)
+    document.querySelector('#algolia-search .search-close-button').addEventListener('click', closeSearch)
+  }
+
+  const cutContent = content => {
+    if (content === '') return ''
+
+    const firstOccur = content.indexOf('<mark>')
+
+    let start = firstOccur - 30
+    let end = firstOccur + 120
+    let pre = ''
+    let post = ''
+
+    if (start <= 0) {
+      start = 0
+      end = 140
+    } else {
+      pre = '...'
+    }
+
+    if (end > content.length) {
+      end = content.length
+    } else {
+      post = '...'
+    }
+
+    let matchContent = pre + content.substring(start, end) + post
+    return matchContent
+  }
+
+  const algolia = GLOBAL_CONFIG.algolia
+  const isAlgoliaValid = algolia.appId && algolia.apiKey && algolia.indexName
+  if (!isAlgoliaValid) {
+    return console.error('Algolia setting is invalid!')
+  }
+
+  const search = instantsearch({
+    indexName: algolia.indexName,
+    searchClient: algoliasearch(algolia.appId, algolia.apiKey),
+    searchFunction(helper) {
+      helper.state.query && helper.search()
+    },
+  })
+
+  const configure = instantsearch.widgets.configure({
+    hitsPerPage: 5
+  })
+
+  const searchBox = instantsearch.widgets.searchBox({
+    container: '#algolia-search-input',
+    showReset: false,
+    showSubmit: false,
+    placeholder: GLOBAL_CONFIG.algolia.languages.input_placeholder,
+    showLoadingIndicator: true
+  })
+
+  const hits = instantsearch.widgets.hits({
+    container: '#algolia-hits',
+    templates: {
+      item(data) {
+        const link = data.permalink ? data.permalink : (GLOBAL_CONFIG.root + data.path)
+        return `
+          <a href="${link}" class="algolia-hit-item-link">
+          ${data._highlightResult.title.value || 'no-title'}
+          </a>
+          <p class="algolia-hit-item-content">${cutContent(data._highlightResult.contentStripTruncate.value)}</p>`
+      },
+      empty: function (data) {
+        return (
+          '<div id="algolia-hits-empty">' +
+          GLOBAL_CONFIG.algolia.languages.hits_empty.replace(/\$\{query}/, data.query) +
+          '</div>'
+        )
+      }
+    }
+  })
+
+  const stats = instantsearch.widgets.stats({
+    container: '#algolia-info > .algolia-stats',
+    templates: {
+      text: function (data) {
+        const stats = GLOBAL_CONFIG.algolia.languages.hits_stats
+          .replace(/\$\{hits}/, data.nbHits)
+          .replace(/\$\{time}/, data.processingTimeMS)
+        return (
+          `<hr>${stats}`
+        )
+      }
+    }
+  })
+
+  const powerBy = instantsearch.widgets.poweredBy({
+    container: '#algolia-info > .algolia-poweredBy',
+  })
+
+  const pagination = instantsearch.widgets.pagination({
+    container: '#algolia-pagination',
+    totalPages: 5,
+    templates: {
+      first: '<i class="fas fa-angle-double-left"></i>',
+      last: '<i class="fas fa-angle-double-right"></i>',
+      previous: '<i class="fas fa-angle-left"></i>',
+      next: '<i class="fas fa-angle-right"></i>'
+    }
+  })
+
+
+  search.addWidgets([configure,searchBox,hits,stats,powerBy,pagination]) // add the widgets to the instantsearch instance
+
+  search.start()
+
+  searchClickFn()
+  searchClickFnOnce()
+
+  window.addEventListener('pjax:complete', () => {
+    getComputedStyle(document.querySelector('#algolia-search .search-dialog')).display === 'block' && closeSearch()
+    searchClickFn()
+  })
+
+  window.pjax && search.on('render', () => {
+    window.pjax.refresh(document.getElementById('algolia-hits'))
+  })
+})

js/search/local-search.js

@@ -0,0 +1,188 @@
+window.addEventListener('load', () => {
+  let loadFlag = false
+  let dataObj = []
+  const $searchMask = document.getElementById('search-mask')
+
+  const openSearch = () => {
+    const bodyStyle = document.body.style
+    bodyStyle.width = '100%'
+    bodyStyle.overflow = 'hidden'
+    btf.animateIn($searchMask, 'to_show 0.5s')
+    btf.animateIn(document.querySelector('#local-search .search-dialog'), 'titleScale 0.5s')
+    setTimeout(() => { document.querySelector('#local-search-input input').focus() }, 100)
+    if (!loadFlag) {
+      search()
+      loadFlag = true
+    }
+    // shortcut: ESC
+    document.addEventListener('keydown', function f (event) {
+      if (event.code === 'Escape') {
+        closeSearch()
+        document.removeEventListener('keydown', f)
+      }
+    })
+  }
+
+  const closeSearch = () => {
+    const bodyStyle = document.body.style
+    bodyStyle.width = ''
+    bodyStyle.overflow = ''
+    btf.animateOut(document.querySelector('#local-search .search-dialog'), 'search_close .5s')
+    btf.animateOut($searchMask, 'to_hide 0.5s')
+  }
+
+  const searchClickFn = () => {
+    document.querySelector('#search-button > .search').addEventListener('click', openSearch)
+  }
+
+  const searchClickFnOnce = () => {
+    document.querySelector('#local-search .search-close-button').addEventListener('click', closeSearch)
+    $searchMask.addEventListener('click', closeSearch)
+    if (GLOBAL_CONFIG.localSearch.preload) dataObj = fetchData(GLOBAL_CONFIG.localSearch.path)
+  }
+
+  // check url is json or not
+  const isJson = url => {
+    const reg = /\.json$/
+    return reg.test(url)
+  }
+
+  const fetchData = async (path) => {
+    let data = []
+    const response = await fetch(path)
+    if (isJson(path)) {
+      data = await response.json()
+    } else {
+      const res = await response.text()
+      const t = await new window.DOMParser().parseFromString(res, 'text/xml')
+      const a = await t
+      data = [...a.querySelectorAll('entry')].map(item =>{
+        return {
+          title: item.querySelector('title').textContent,
+          content: item.querySelector('content') && item.querySelector('content').textContent,
+          url: item.querySelector('url').textContent
+        }
+      })
+    }
+    if (response.ok) {
+      const $loadDataItem = document.getElementById('loading-database')
+      $loadDataItem.nextElementSibling.style.display = 'block'
+      $loadDataItem.remove()
+    }
+    return data
+  }
+
+  const search = () => {
+    if (!GLOBAL_CONFIG.localSearch.preload) {
+      dataObj = fetchData(GLOBAL_CONFIG.localSearch.path)
+    }
+
+    const $input = document.querySelector('#local-search-input input')
+    const $resultContent = document.getElementById('local-search-results')
+    const $loadingStatus = document.getElementById('loading-status')
+
+    $input.addEventListener('input', function () {
+      const keywords = this.value.trim().toLowerCase().split(/[\s]+/)
+      if (keywords[0] !== '') $loadingStatus.innerHTML = '<i class="fas fa-spinner fa-pulse"></i>'
+
+      $resultContent.innerHTML = ''
+      let str = '<div class="search-result-list">'
+      if (keywords.length <= 0) return
+      let count = 0
+      // perform local searching
+      dataObj.then(data => {
+        data.forEach(data => {
+          let isMatch = true
+          let dataTitle = data.title ? data.title.trim().toLowerCase() : ''
+          const dataContent = data.content ? data.content.trim().replace(/<[^>]+>/g, '').toLowerCase() : ''
+          const dataUrl = data.url.startsWith('/') ? data.url : GLOBAL_CONFIG.root + data.url
+          let indexTitle = -1
+          let indexContent = -1
+          let firstOccur = -1
+          // only match articles with not empty titles and contents
+          if (dataTitle !== '' || dataContent !== '') {
+            keywords.forEach((keyword, i) => {
+              indexTitle = dataTitle.indexOf(keyword)
+              indexContent = dataContent.indexOf(keyword)
+              if (indexTitle < 0 && indexContent < 0) {
+                isMatch = false
+              } else {
+                if (indexContent < 0) {
+                  indexContent = 0
+                }
+                if (i === 0) {
+                  firstOccur = indexContent
+                }
+              }
+            })
+          } else {
+            isMatch = false
+          }
+
+          // show search results
+          if (isMatch) {
+            if (firstOccur >= 0) {
+              // cut out 130 characters
+              // let start = firstOccur - 30 < 0 ? 0 : firstOccur - 30
+              // let end = firstOccur + 50 > dataContent.length ? dataContent.length : firstOccur + 50
+              let start = firstOccur - 30
+              let end = firstOccur + 100
+              let pre = ''
+              let post = ''
+
+              if (start < 0) {
+                start = 0
+              }
+
+              if (start === 0) {
+                end = 100
+              } else {
+                pre = '...'
+              }
+
+              if (end > dataContent.length) {
+                end = dataContent.length
+              } else {
+                post = '...'
+              }
+
+              let matchContent = dataContent.substring(start, end)
+
+              // highlight all keywords
+              keywords.forEach(keyword => {
+                const regS = new RegExp(keyword, 'gi')
+                matchContent = matchContent.replace(regS, '<span class="search-keyword">' + keyword + '</span>')
+                dataTitle = dataTitle.replace(regS, '<span class="search-keyword">' + keyword + '</span>')
+              })
+
+              str += '<div class="local-search__hit-item"><a href="' + dataUrl + '" class="search-result-title">' + dataTitle + '</a>'
+              count += 1
+
+              if (dataContent !== '') {
+                str += '<p class="search-result">' + pre + matchContent + post + '</p>'
+              }
+            }
+            str += '</div>'
+          }
+        })
+        if (count === 0) {
+          str += '<div id="local-search__hits-empty">' + GLOBAL_CONFIG.localSearch.languages.hits_empty.replace(/\$\{query}/, this.value.trim()) +
+            '</div>'
+        }
+        str += '</div>'
+        $resultContent.innerHTML = str
+        if (keywords[0] !== '') $loadingStatus.innerHTML = ''
+        window.pjax && window.pjax.refresh($resultContent)
+      })
+    })
+  }
+
+  searchClickFn()
+  searchClickFnOnce()
+
+  // pjax
+  window.addEventListener('pjax:complete', () => {
+    !btf.isHidden($searchMask) && closeSearch()
+    searchClickFn()
+  })
+})