// Copyright (c) 2016-2019 VMware, Inc. All Rights Reserved.
// This software is released under MIT license.
// The full license information can be found in LICENSE in the root directory of this project.

@mixin sliding-nav-positioning($top: 0, $right: auto, $bottom: 0, $left: 0) {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: $top;
  right: $right;
  bottom: $bottom;
  left: $left;
  background: $clr-nav-background-color;
  z-index: $clr-sliding-panel-z-index;
  height: 100vh;
}

@mixin menu-trigger($right: auto, $left: 0, $transformX: $clr-trigger-position) {
  position: fixed;
  top: 0;
  right: $right;
  left: $left;
  z-index: $clr-sliding-panel-z-index;
  transform: translateX($transformX);
  transition: $clr-trigger-animation;

  &::after {
    content: none;
  }
}

@mixin hamburger-menu-trigger-animation() {
  & > span {
    background: transparent;

    &::before,
    &::after {
      left: 0.125rem;
      transform-origin: 9%;
      transition: $clr-trigger-animation;
    }

    &::before {
      transform: rotate(45deg);
    }

    &::after {
      transform: rotate(-45deg);
    }
  }
}

@mixin overflow-menu-trigger-animation() {
  & > span {
    background: transparent;

    &::before,
    &::after {
      height: 0.0833333rem;
      width: 1rem;
      left: -0.25rem;
      transform-origin: -3%;
      transition: $clr-trigger-animation;
    }

    &::before {
      transform: rotate(45deg);
    }

    &::after {
      transform: rotate(-45deg);
    }
  }
}

@include exports('responsive-nav.clarity') {
  .header-hamburger-trigger,
  .header-overflow-trigger {
    display: none;
  }

  .header-hamburger-trigger {
    $trigger-span-psuedo-positioning: -0.291667rem;

    & > span,
    & > span::before,
    & > span::after {
      display: inline-block;
      height: 0.0833333rem;
      width: 1rem;
      background: $clr-color-neutral-0;
      border-radius: 0.125rem;
    }

    & > span {
      position: relative;
      vertical-align: middle;

      &::before,
      &::after {
        content: '';
        position: absolute;
        left: 0;
      }

      &::before {
        top: $trigger-span-psuedo-positioning;
      }

      &::after {
        bottom: $trigger-span-psuedo-positioning;
      }
    }

    &.active {
      @include hamburger-menu-trigger-animation();
    }
  }

  .header-overflow-trigger {
    $overflow-trigger-psuedo-positioning: -0.333333rem;

    & > span,
    & > span::before,
    & > span::after {
      display: inline-block;
      height: 0.166667rem;
      width: 0.166667rem;
      background: $clr-color-neutral-0;
      border-radius: 0.166667rem;
    }

    & > span {
      position: relative;
      vertical-align: middle;

      &::before,
      &::after {
        content: '';
        position: absolute;
        left: 0;
      }

      &::before {
        top: $overflow-trigger-psuedo-positioning;
      }

      &::after {
        bottom: $overflow-trigger-psuedo-positioning;
      }
    }

    &.active {
      @include overflow-menu-trigger-animation();
    }
  }

  @media screen and (max-width: map-get($clr-grid-breakpoints, md)) {
    .main-container {
      .header-hamburger-trigger,
      .header-overflow-trigger {
        display: inline-block;

        border: none;
        background: none;
        cursor: pointer;
        font-size: 1rem;
        height: $clr-header-height;
        width: $clr-header-height;
        padding: 0 0 0.166667rem 0;
        //4px to vertically align the trigger lines. display flex was not working on all browsers.
        text-align: center;
        white-space: nowrap;

        &:focus {
          outline-offset: -0.208333rem; //So that the outline styles aren't hidden because of the browser
        }

        @include header-nav-appearance();
      }

      .header-nav.clr-nav-level-1,
      .subnav.clr-nav-level-1,
      .sub-nav.clr-nav-level-1,
      .sidenav.clr-nav-level-1,
      .clr-vertical-nav.clr-nav-level-1 {
        @include sliding-nav-positioning();
        transform: translateX(-1 * $clr-sliding-panel-width);
        transition: $clr-sliding-panel-animation;
      }

      .header-nav.clr-nav-level-2,
      .subnav.clr-nav-level-2,
      .sub-nav.clr-nav-level-2,
      .sidenav.clr-nav-level-2,
      .clr-vertical-nav.clr-nav-level-2 {
        @include sliding-nav-positioning(0, 0, 0, auto);
        transform: translateX($clr-sliding-panel-width);
        transition: $clr-sliding-panel-animation;
      }

      .subnav.clr-nav-level-1,
      .sub-nav.clr-nav-level-1,
      .subnav.clr-nav-level-2,
      .sub-nav.clr-nav-level-2 {
        .nav,
        aside {
          flex-direction: column;
          align-items: stretch;
        }

        aside {
          justify-content: center;
          width: 100%;
        }

        //Such deep nesting is unfortunately required here because we don't want
        //navs which are not subnav to behave in a similar way.
        // TODO: more specificity in classname is preferable to nesting...
        .nav {
          padding-left: 0;

          .nav-item {
            height: 1.5rem;
            margin-right: 0;
          }

          .nav-link {
            padding: 0 0.5rem 0 1rem;
            width: 100%;
            max-width: 100%;
            overflow: hidden;
            text-overflow: ellipsis;
            border-radius: $clr-global-borderradius 0 0 $clr-global-borderradius;

            @include vertical-nav-link-colors();

            &:hover,
            &.active {
              box-shadow: none;
            }
          }
        }
      }

      .sidenav.clr-nav-level-1,
      .sidenav.clr-nav-level-2 {
        .nav-link {
          &:hover,
          &.active {
            color: inherit;
            background: $clr-responsive-nav-hover-bg; // Is the menu that showsup when the viewport is narrow (x-axis)
          }
        }
      }

      .sidenav.clr-nav-level-1,
      .sidenav.clr-nav-level-2,
      .clr-vertical-nav.clr-nav-level-1,
      .clr-vertical-nav.clr-nav-level-2 {
        border-right: none;
      }
    }

    .main-container {
      .header-overflow-trigger {
        position: relative;

        &::after {
          position: absolute;
          content: '';
          @include header-section-divider();
          left: 0;
        }
      }

      .header {
        .branding {
          max-width: 10rem;
          min-width: 0;
          overflow: hidden;
        }

        .header-hamburger-trigger + .branding {
          padding-left: 0;

          //TODO: deprecate .clr-icon, .logo
          .clr-icon,
          .logo,
          clr-icon {
            display: none;
          }
        }

        .branding + .header-overflow-trigger,
        .header-nav + .header-overflow-trigger {
          margin-left: auto;
        }
      }
    }

    .main-container {
      &.open-hamburger-menu,
      &.open-overflow-menu {
        .header {
          .header-backdrop {
            position: fixed;
            top: 0;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba($clr-color-neutral-1000, 0.85);
            cursor: pointer;
            z-index: $clr-sliding-panel-backdrop-z-index;
          }

          .header-nav.clr-nav-level-1,
          .header-nav.clr-nav-level-2 {
            .nav-link {
              flex: 0 0 auto;

              .nav-icon,
              .fa {
                display: none;
              }

              .nav-text {
                $nav-text-height: 1rem;

                display: inline-block;
                color: $clr-sliding-panel-text-color;
                line-height: $nav-text-height;
                padding: 0.25rem 0 0.25rem 1rem;
                white-space: normal;
                font-weight: normal;
              }

              opacity: 1;

              .nav-icon + .nav-text {
                display: inline-block;
              }

              @include vertical-nav-link-colors();

              &.active > .nav-text {
                color: inherit;
              }
            }
          }
        }

        .clr-vertical-nav .nav-trigger {
          display: none;
        }
      }

      &.open-hamburger-menu {
        .header {
          .branding {
            position: fixed;
            top: 0;
            left: 0;
            overflow: hidden;
            width: $clr-sliding-panel-width;
            max-width: $clr-sliding-panel-width;
            z-index: $clr-sliding-panel-z-index + 1;
            padding-left: 1rem;

            & > .nav-link {
              overflow: hidden;
            }

            //deprecate .clr-icon, .logo
            .clr-icon,
            .logo,
            clr-icon {
              display: inline-block;
            }

            clr-icon[shape='vm-bug'],
            .clr-vmw-logo {
              background-color: $clr-color-neutral-600;
              border-radius: $clr-global-borderradius;
            }

            .title {
              color: $clr-sliding-panel-text-color;
              text-overflow: ellipsis;
              overflow: hidden;
            }
          }
        }

        .header-hamburger-trigger {
          @include menu-trigger();
          @include hamburger-menu-trigger-animation();
        }

        .header-nav.clr-nav-level-1,
        .subnav.clr-nav-level-1,
        .sub-nav.clr-nav-level-1,
        .sidenav.clr-nav-level-1,
        .clr-vertical-nav.clr-nav-level-1 {
          padding-top: $clr-header-height + 1rem;
          transform: translateX(0);
          transition: $clr-sliding-panel-animation;

          .sidenav-content {
            padding-bottom: 1rem;
          }
        }
      }

      &.open-overflow-menu {
        .header-nav.clr-nav-level-2,
        .subnav.clr-nav-level-2,
        .sub-nav.clr-nav-level-2,
        .sidenav.clr-nav-level-2,
        .clr-vertical-nav.clr-nav-level-2 {
          transform: translateX(0);
          transition: $clr-sliding-panel-animation;
        }

        .header-nav.clr-nav-level-2,
        .subnav.clr-nav-level-2,
        .sub-nav.clr-nav-level-2 {
          padding-top: 1rem;
        }

        .header-overflow-trigger {
          @include menu-trigger(0, auto, (-1 * $clr-trigger-position));
          @include overflow-menu-trigger-animation();
        }
      }

      &.open-hamburger-menu {
        .header-nav.clr-nav-level-1,
        .subnav.clr-nav-level-1,
        .sub-nav.clr-nav-level-1,
        .sidenav.clr-nav-level-1,
        .clr-vertical-nav.clr-nav-level-1 {
          width: $clr-sliding-panel-width;
          max-width: $clr-sliding-panel-width;
        }
      }

      &.open-overflow-menu {
        .header-nav.clr-nav-level-2,
        .subnav.clr-nav-level-2,
        .sub-nav.clr-nav-level-2,
        .sidenav.clr-nav-level-2,
        .clr-vertical-nav.clr-nav-level-2 {
          width: $clr-sliding-panel-width;
          max-width: $clr-sliding-panel-width;
        }
      }
    }
  }

  @media screen and (max-width: map-get($clr-grid-breakpoints, sm)) {
    .main-container {
      .header {
        .branding {
          max-width: 6rem;
          min-width: 0;
          overflow: hidden;
        }
      }

      .header-nav.clr-nav-level-1,
      .subnav.clr-nav-level-1,
      .sub-nav.clr-nav-level-1,
      .sidenav.clr-nav-level-1,
      .clr-vertical-nav.clr-nav-level-1 {
        transform: translateX(-1 * $clr-sliding-panel-width-sm);
      }

      .header-nav.clr-nav-level-2,
      .subnav.clr-nav-level-2,
      .sub-nav.clr-nav-level-2,
      .sidenav.clr-nav-level-2,
      .clr-vertical-nav.clr-nav-level-2 {
        transform: translateX($clr-sliding-panel-width-sm);
      }
    }

    .main-container {
      &.open-hamburger-menu {
        .header {
          .branding {
            width: $clr-sliding-panel-width-sm;
            max-width: $clr-sliding-panel-width-sm;
          }
        }

        .header-nav.clr-nav-level-1,
        .subnav.clr-nav-level-1,
        .sub-nav.clr-nav-level-1,
        .sidenav.clr-nav-level-1,
        .clr-vertical-nav.clr-nav-level-1 {
          width: $clr-sliding-panel-width-sm;
          max-width: $clr-sliding-panel-width-sm;
        }

        .header-hamburger-trigger {
          @include menu-trigger(auto, 0, $clr-trigger-position-sm);
        }
      }

      &.open-overflow-menu {
        .header-nav.clr-nav-level-2,
        .subnav.clr-nav-level-2,
        .sub-nav.clr-nav-level-2,
        .sidenav.clr-nav-level-2,
        .clr-vertical-nav.clr-nav-level-2 {
          width: $clr-sliding-panel-width-sm;
          max-width: $clr-sliding-panel-width-sm;
        }

        .header-overflow-trigger {
          @include menu-trigger(0, auto, (-1 * $clr-trigger-position-sm));
        }
      }
    }
  }
}