From ba1db7db3e7bf97de56909b1f13592172d550552 Mon Sep 17 00:00:00 2001
From: jeffreytse <jeffreytse.mail@gmail.com>
Date: Sat, 3 Oct 2020 11:31:43 +0800
Subject: feat: add night mode (#4)

---
 _includes/extensions/theme-toggle.html |  90 ++++++++++++++++
 _layouts/default.html                  |   2 +
 _sass/misc/theme-toggle.scss           |  79 ++++++++++++++
 _sass/yat.scss                         |   3 +-
 _sass/yat/_dark.scss                   | 184 +++++++++++++++++++++++++++++++++
 5 files changed, 357 insertions(+), 1 deletion(-)
 create mode 100644 _includes/extensions/theme-toggle.html
 create mode 100644 _sass/misc/theme-toggle.scss
 create mode 100644 _sass/yat/_dark.scss

diff --git a/_includes/extensions/theme-toggle.html b/_includes/extensions/theme-toggle.html
new file mode 100644
index 0000000..7976e21
--- /dev/null
+++ b/_includes/extensions/theme-toggle.html
@@ -0,0 +1,90 @@
+<div class="theme-toggle">
+  <input type="checkbox" id="theme-switch">
+  <label for="theme-switch">
+    <div class="toggle"></div>
+    <div class="names">
+      <p class="light">Light</p>
+      <p class="dark">Dark</p>
+    </div>
+  </label>
+</div>
+
+<script>
+  (function() {
+    var sw = document.getElementById('theme-switch');
+    var html = document.getElementsByTagName('html')[0];
+    var themeData = loadThemeData();
+
+    function saveThemeData(data) {
+      localStorage.setItem('theme', JSON.stringify(data));
+    }
+
+    function loadThemeData() {
+      var data = localStorage.getItem('theme');
+      try {
+        data = JSON.parse(data ? data : '');
+      } catch(e) {
+        data = { nightShift: null, autoToggleAt: 0 };
+        saveThemeData(data);
+      }
+      return data;
+    }
+
+    function handleThemeToggle(nightShift) {
+      themeData.nightShift = nightShift;
+      saveThemeData(themeData);
+      html.dataset.theme = nightShift ? 'dark' : 'light';
+      setTimeout(function() {
+        sw.checked = nightShift ? true : false;
+      }, 50);
+    }
+
+    function autoThemeToggle() {
+      // Next time point of theme toggle
+      var now = new Date();
+      var toggleAt = new Date();
+      var hours = now.getHours();
+      var nightShift = hours >= 19 || hours <=7;
+
+      if (nightShift) {
+        if (hours > 7) {
+          toggleAt.setDate(toggleAt.getDate() + 1);
+        }
+        toggleAt.setHours(7);
+      } else {
+        toggleAt.setHours(19);
+      }
+
+      toggleAt.setMinutes(0);
+      toggleAt.setSeconds(0);
+      toggleAt.setMilliseconds(0)
+
+      var delay = toggleAt.getTime() - now.getTime();
+
+      // auto toggle theme mode
+      setTimeout(function() {
+        handleThemeToggle(!nightShift);
+      }, delay);
+
+      return {
+        nightShift: nightShift,
+        toggleAt: toggleAt.getTime()
+      };
+    }
+
+    var data = autoThemeToggle();
+
+    // Listen the theme toggle event
+    sw.addEventListener('change', function(event) {
+      handleThemeToggle(event.target.checked);
+    });
+
+    // Toggle theme by local setting
+    if (data.toggleAt > themeData.autoToggleAt) {
+      themeData.autoToggleAt = data.toggleAt;
+      handleThemeToggle(data.nightShift);
+    } else {
+      handleThemeToggle(themeData.nightShift);
+    }
+  })();
+</script>
diff --git a/_layouts/default.html b/_layouts/default.html
index 1823491..b9ad657 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -11,6 +11,8 @@
 
     {%- include extensions/hashlocate.html -%}
 
+    {%- include extensions/theme-toggle.html -%}
+
     <main class="page-content" aria-label="Content">
       <div class="wrapper">
         {{ content }}
diff --git a/_sass/misc/theme-toggle.scss b/_sass/misc/theme-toggle.scss
new file mode 100644
index 0000000..492eb0c
--- /dev/null
+++ b/_sass/misc/theme-toggle.scss
@@ -0,0 +1,79 @@
+.theme-toggle {
+  position: relative;
+  width: 102px;
+  margin-top: 10px;
+  margin-right: 60px;
+  margin-left: auto;
+  transition: 0.1s all ease-in-out;
+
+  label, .toggle {
+    border-radius: 100px;
+  }
+
+  label {
+    display: block;
+    background-color: rgba(120,120,120,.15);
+    cursor: pointer;
+  }
+
+  .toggle {
+    position: absolute;
+    width: 50%;
+    height: 100%;
+    background-color: #fff;
+    box-shadow: 0 2px 15px rgba(0,0,0,.15);
+    transition: transform .2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
+  }
+
+  .names {
+    font-size: 1em;
+    font-weight: bolder;
+    width: 76%;
+    margin-left: 12%;
+    position: relative;
+    display: flex;
+    justify-content: space-between;
+    user-select: none;
+  }
+
+  .dark {
+    opacity: .5;
+  }
+
+  p {
+    color: #acacac;
+    margin-bottom: 0;
+    line-height: 24px;
+  }
+
+  [type="checkbox"] {
+    display: none;
+  }
+
+  /* Toggle */
+  [type="checkbox"]:checked ~ label .toggle {
+    transform: translateX(100%);
+    background-color: #34323D;
+  }
+
+  [type="checkbox"]:checked ~ label .dark{
+    opacity: 1;
+  }
+
+  [type="checkbox"]:checked ~ label .light{
+    opacity: .5;
+  }
+
+  @include media-query(1024px) {
+    margin-right: 35px;
+  }
+
+  @include media-query($on-palm) {
+    width: 94px;
+    margin-right: 20px;
+
+    .names {
+      font-size: .85em;
+    }
+  }
+}
diff --git a/_sass/yat.scss b/_sass/yat.scss
index 25a193a..a18f949 100644
--- a/_sass/yat.scss
+++ b/_sass/yat.scss
@@ -61,7 +61,8 @@ $on-laptop:        800px !default;
 @import
   "yat/base",
   "yat/layout",
-  // "yat/syntax-highlighting",
+  "yat/dark",
+  "misc/theme-toggle",
   "misc/article-menu",
   "misc/common-list",
   "misc/google-translate"
diff --git a/_sass/yat/_dark.scss b/_sass/yat/_dark.scss
new file mode 100644
index 0000000..63f4880
--- /dev/null
+++ b/_sass/yat/_dark.scss
@@ -0,0 +1,184 @@
+$dark-background-color:       #0e0e0e !default;
+
+html[data-theme="dark"]  {
+
+  &[data-scroll-status='top'] {
+    .site-footer-inner {
+      border-top: solid 1px #2f2f2f !important;
+      transition: 0s;
+    }
+  }
+
+  body {
+    color: #bbb;
+    background-color: $dark-background-color;
+  }
+
+  *:not(pre) > code {
+    background-color: #545454;
+  }
+
+  table {
+    color: #9d9d9d;
+
+    th {
+      background-color: #000;
+    }
+
+    tr:nth-child(even) {
+      background-color: #111;
+    }
+  }
+
+  .site-header {
+    background-color: #090909;
+
+    .site-brand {
+      .site-brand-inner {
+        &, &:visited {
+          color: #f8f8f8;
+        }
+      }
+    }
+
+    .site-nav .page-link {
+      color: #f8f8f8;
+    }
+
+    .ct-language-dropdown {
+      color: #f8f8f8;
+      background-color: $dark-background-color;
+    }
+
+    .ct-language-selected, .ct-language-dropdown li:hover {
+      background-color: #222 !important;
+    }
+  }
+
+  .site-footer {
+    color: #fff;
+    background-color: #000;
+  }
+
+  .left-vsplit:before {
+    background-color: #9a9a9a;
+  }
+
+  .page-banner {
+    .page-banner-img {
+      & > *:first-child {
+        opacity: 0.8;
+      }
+    }
+  }
+
+  .pagination {
+    .post-link {
+      color: #bbb;
+    }
+
+    .post-title {
+      a:visited:after {
+        background-color: $dark-background-color;
+      }
+
+      a:after {
+        color: $dark-background-color;
+      }
+    }
+
+    .post-list {
+      & > li:not(:last-child) {
+        border-bottom: 1px solid #545454;
+      }
+    }
+
+    .post-tags .post-tag:hover {
+      color: #d7d7d7;
+    }
+  }
+
+  .page-segments {
+    li {
+      a {
+        color: #ddd;
+      }
+
+      a:visited:after {
+        background-color: $dark-background-color;
+      }
+
+      a:after {
+        color: $dark-background-color;
+      }
+    }
+  }
+
+  .post .post-content {
+    img:not([raw]) {
+      background-color: #ffffff33;
+    }
+  }
+
+  .post-related {
+    & > *:first-child {
+      color: #d7d7d7;
+    }
+
+    a:visited:after {
+      background-color: $dark-background-color;
+    }
+
+    a:after {
+      color: $dark-background-color;
+    }
+
+    a:hover {
+      color: #aaa;
+    }
+  }
+
+  .common-list {
+    li {
+      border-bottom: solid 1px #40404088;
+
+      a {
+        color: #aaa;
+      }
+
+      a:hover {
+        background-color: #272727;
+      }
+
+      span {
+        background-color: #333;
+      }
+    }
+  }
+
+  .post-menu {
+    .post-menu-title {
+      color: #ddd;
+    }
+
+    .post-menu-content {
+      ul {
+        border-left: 1px solid #787878;
+
+        .active {
+          background-color: #2d2d2d;
+          border-left: 2px solid #aaa;
+        }
+
+        a {
+          color: #bbb;
+        }
+
+        a:hover {
+          color: #fff !important;
+        }
+      }
+    }
+  }
+}
+
-- 
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