@import '../common/style/index.less';

@loading: ~'@{prefix}-loading';

.@{loading} {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  &__spinner {
    position: relative;
    box-sizing: border-box;
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    animation: rotate 0.8s linear infinite;
    color: #0052d9;

    &.reverse {
      animation-name: rotateReverse;
    }

    &--spinner {
      animation-timing-function: steps(12);

      .@{loading}__dot {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;

        &::before {
          display: block;
          width: 5rpx;
          height: 25%;
          margin: 0 auto;
          background-color: currentColor;
          border-radius: 40%;
          content: ' ';
        }
      }
    }

    &--circular {
      .@{loading}__circular {
        border-radius: 100%;
        width: 100%;
        height: 100%;
        background: conic-gradient(
          from 180deg at 50% 50%,
          rgba(255, 255, 255, 0) 0deg,
          rgba(255, 255, 255, 0) 60deg,
          currentColor 330deg,
          rgba(255, 255, 255, 0) 360deg
        );
        mask: radial-gradient(transparent calc(50% - 1rpx), #fff 50%);

        /* stylelint-disable-next-line */
        -webkit-mask: radial-gradient(transparent calc(50% - 1rpx), #fff 50%);
      }
    }

    &--dots {
      display: flex;
      justify-content: space-between;
      align-items: center;
      animation: none;

      .@{loading}__dot {
        width: 20%;
        height: 20%;
        border-radius: 50%;
        background-color: currentColor;
        animation-duration: 1.8s;
        animation-name: dotting;
        animation-timing-function: linear;
        animation-iteration-count: infinite;
        animation-fill-mode: both;
      }
    }
  }

  &--vertical {
    flex-direction: column;

    .@{loading}__text {
      margin-top: 12rpx;
    }
  }

  &--horizontal {
    flex-direction: row;

    .@{loading}__text {
      margin-left: 16rpx;
    }
  }

  &__refresh-btn {
    margin-left: 16rpx;
    color: #0052d9;
  }

  &__bar {
    height: 6rpx;
    width: 80%;
    transition: 0.5s;
    background-color: #0052d9;
    display: none;

    &--static {
      display: block;
    }

    &--loaded {
      opacity: 0;
      height: 0;
      animation: t-bar-loaded 1s ease-out;
    }

    &--animation {
      animation: t-bar 8s linear;
      display: block;
    }
  }
}

@keyframes t-bar {
  0% {
    width: 0;
  }

  50% {
    width: 70%;
  }

  100% {
    width: 80%;
  }
}

@keyframes t-bar-loaded {
  0% {
    height: 6rpx;
    opacity: 1;
    width: 90%;
  }

  50% {
    height: 6rpx;
    opacity: 1;
    width: 100%;
  }

  100% {
    height: 0;
    opacity: 0;
    width: 100%;
  }
}

.generate(@n, @i: 1) when (@i =< @n) {
  .@{loading}__dot:nth-of-type(@{i}) {
    transform: rotate(@i * 30deg);
    opacity: (1 / 12) * (@i - 1);
  }
  .generate(@n, (@i + 1));
}
.generate(12);

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

@keyframes rotateReverse {
  from {
    transform: rotate(360deg);
  }

  to {
    transform: rotate(0deg);
  }
}

@keyframes dotting {
  0% {
    opacity: 0.4;
  }

  1% {
    opacity: 0.8;
  }

  33% {
    opacity: 0.8;
  }

  34% {
    opacity: 0.4;
  }

  100% {
    opacity: 0.4;
  }
}