/*
 * Copyright 2019 dialog LLC <info@dlg.im>
 */

@import '../../styles/variables.css';

:root {
  --spinner-wave-background-color: color-mod(var(--color-primary) alpha(85%));
  --spinner-wave-color: #fff;
  --spinner-wawe-small-height: 24px;
  --spinner-wave-small-stick-width: 2px;
  --spinner-wawe-height: 40px;
  --spinner-wave-stick-width: 2px;
  --spinner-wawe-large-height: 50px;
  --spinner-wave-large-stick-width: 3px;
  --spinner-dotted-small-dot-size: 4px;
  --spinner-dotted-dot-size: 6px;
  --spinner-dotted-large-dot-size: 8px;
  --spinner-dotted-animation-delay: 160ms;
  --spinner-dotted-dot-color: var(--color-primary);
  --spinner-round-size: 14px;
  --spinner-round-border-width: 6px;
  --spinner-round-normal-size: 24px;
  --spinner-round-normal-border-width: 4px;
  --spinner-round-large-size: 34px;
  --spinner-round-large-border-width: 3px;
  --spinner-round-color: var(--color-primary);
  --spinner-round-animation-duration: 2s;
}

@keyframes line-scale {
  0%,
  40%,
  100% {
    transform: scaleY(0.4);
  }

  20% {
    transform: scaleY(1);
  }
}

@keyframes pulse {
  0%,
  80%,
  100% {
    transform: scale(0.7);
    opacity: 0;
  }

  40% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes spin {
  100% {
    transform: rotate(360deg);
  }
}

@keyframes dash {
  0% {
    stroke-dasharray: 1, 200;
    stroke-dashoffset: 0;
  }
  50% {
    stroke-dasharray: 89, 200;
    stroke-dashoffset: -35px;
  }
  100% {
    stroke-dasharray: 89, 200;
    stroke-dashoffset: -124px;
  }
}

/* Styles */
.container {
  all: initial;
  cursor: inherit;
}

/* Wave spinner */
.wave {
  display: inline-flex;
  box-sizing: border-box;
  vertical-align: middle;
  border-radius: 50%;
  background-color: var(--spinner-wave-background-color);
  align-content: center;
  align-items: center;
  justify-content: center;
  @mixin clearfix;
}

.stick {
  position: relative;
  display: inline-flex;
  float: left;
  box-sizing: content-box;
  animation: line-scale 1.2s infinite ease;
  border: 0;
  border-radius: 0;
  background-color: var(--spinner-wave-color);
  flex: 0 0 auto;
  color: var(--spinner-wave-color);

  &:nth-child(1) {
    animation-delay: -1.2s;
  }

  &:nth-child(2) {
    animation-delay: -1.1s;
  }

  &:nth-child(3) {
    animation-delay: -1s;
  }

  &:nth-child(4) {
    animation-delay: -0.9s;
  }

  &:nth-child(5) {
    animation-delay: -0.8s;
  }
}

/* Dotted spinner */
.dotted {
  position: relative;
  display: inline-flex;
  text-align: center;
  vertical-align: middle;
}

.dot {
  display: inline-block;
  animation: pulse 1s infinite ease-in-out;
  transform-origin: 50% 50%;
  vertical-align: middle;
  border-radius: 50%;
  background-color: var(--spinner-dotted-dot-color);

  &:nth-child(2) {
    animation-delay: var(--spinner-dotted-animation-delay);
  }

  &:nth-child(3) {
    animation-delay: calc(var(--spinner-dotted-animation-delay) * 2);
  }
}

/* Round spinner */
.round {
  vertical-align: middle;
  animation: spin var(--spinner-round-animation-duration) infinite linear;
  align-self: center;
  stroke: var(--spinner-round-color);
}

.path {
  animation: dash calc(var(--spinner-round-animation-duration) / 1.5)
    ease-in-out infinite;
  stroke-linecap: round;
}

/* Size */
.small {
  &.wave {
    width: var(--spinner-wawe-small-height);
    height: var(--spinner-wawe-small-height);
    padding: 0;
    & .stick {
      width: var(--spinner-wave-small-stick-width);
      height: 10px;
      margin: 0 1px 0 0;
    }
  }

  &.dotted {
    height: var(--spinner-dotted-small-dot-size);

    & .dot {
      margin: 0 1px;
      width: var(--spinner-dotted-small-dot-size);
      height: var(--spinner-dotted-small-dot-size);
    }
  }

  &.round {
    width: var(--spinner-round-size);
    height: var(--spinner-round-size);

    & .path {
      stroke-width: var(--spinner-round-border-width);
    }
  }
}

.normal {
  &.wave {
    width: var(--spinner-wawe-height);
    height: var(--spinner-wawe-height);
    & .stick {
      width: var(--spinner-wave-stick-width);
      height: 20px;
      margin: 0 1px;
    }
  }

  &.dotted {
    height: var(--spinner-dotted-dot-size);

    & .dot {
      width: var(--spinner-dotted-dot-size);
      height: var(--spinner-dotted-dot-size);
      margin: 0 2px 0 1px;
    }
  }

  &.round {
    width: var(--spinner-round-normal-size);
    height: var(--spinner-round-normal-size);
    & .path {
      stroke-width: var(--spinner-round-normal-border-width);
    }
  }
}

.large {
  &.round {
    width: var(--spinner-round-large-size);
    height: var(--spinner-round-large-size);
    & .path {
      stroke-width: var(--spinner-round-large-border-width);
    }
  }

  &.wave {
    width: var(--spinner-wawe-large-height);
    height: var(--spinner-wawe-large-height);

    & .stick {
      width: var(--spinner-wave-large-stick-width);
      height: 28px;
      margin: 0 2px 0 1px;
    }
  }

  &.dotted {
    height: calc(var(--spinner-dotted-dot-size) * 2);

    & .dot {
      margin: 0 2px;
      width: calc(var(--spinner-dotted-dot-size) * 2);
      height: calc(var(--spinner-dotted-dot-size) * 2);
    }
  }
}