/*
*
* Boiler Plate stuff 
*
*********************************/
:root {
  --movie-width: 15.5vw;
  --movie-height: 200px;
  --arrow-width: 50px;
  --slider-py: 200px;
}
@media only screen and (max-width: 1000px) {
  :root {
    --movie-width: 25vw;
  }
}

body {
  background-color: #141414;
  font-family: "Heebo", sans-serif;
}

.container {
  position: relative;
}

.logo {
  color: red;
  font-size: 4rem;
  text-align: center;
}

/*
*
* THE SLIDER CONTAINER
*
*********************************/
.slider {
  width: 100%;
  overflow-x: scroll;
  overflow-y: visible;
  white-space: nowrap;
  position: relative;
  padding-top: var(--slider-py);
  padding-bottom: var(--slider-py);
}

/*
*
* SLIDER INDICATORS
*
*********************************/
.container-indicators {
  width: 100px;
  position: absolute;
  right: 0;
  top: calc(var(--slider-py) - 60px);
  visibility: hidden;
}
.indicator {
  width: 15px;
  height: 2px;
  background-color: grey;
  display: inline-block;
}
.indicator.active {
  background-color: white;
}

/*
*
* MOVIE ELEMENTS!
*
*********************************/
.movie {
  width: var(--movie-width);
  height: var(--movie-height);
  display: inline-block;
  position: relative;
  color: white;
  padding: 0 2px;
  font-size: 0.8rem;
  transition: all 0.8s ease-in-out;
}

.movie:nth-of-type(1) {
  margin-left: var(--arrow-width);
}

.movie img {
  object-fit: cover;
  height: 100%;
  width: 100%;
  border-radius: 10px;
}

.description {
  position: absolute;
  display: none;
  z-index: 9999;
  background-color: #272727;
  width: var(--movie-width);
  margin-top: -10px;
  padding: 10px 0;
  border-bottom-left-radius: 10px;
  border-bottom-right-radius: 10px;
}

@media only screen and (min-width: 900px) {
  .movie:hover {
    transform: scale(1.3);
    z-index: 2;
  }
  /* Make description visible when movie is hovered */
  .movie:hover > .description {
    display: block;
  }
  .movie:hover > img {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
  }
}

.description__buttons-container {
  display: flex;
  flex-direction: row;
  padding: 10px;
}

.description__text-container {
  padding: 10px;
}

.description__match {
  color: green;
}

.description__rating {
  outline: 1px solid white;
  padding: 0 3px;
  margin: 0 5px;
}

.description__button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border: 2px solid white;
  text-align: center;
  font-size: 8px;
  margin-right: 5px;
  border-radius: 100%;
}

.description__button:hover {
  border-color: grey;
  color: grey;
  cursor: pointer;
}

.description__button:nth-of-type(5) {
  margin-left: auto;
  margin-right: 0;
}

/*
*
* BUTTONS
*
*********************************/
.btn-nav {
  width: var(--arrow-width);
  height: var(--movie-height);
  border-radius: 5px;
  position: absolute;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.3);
  outline: none;
  border: none;
  color: white;
  top: var(--slider-py);
  z-index: 5;
  visibility: hidden;
}

#moveLeft {
  left: 0;
}

#moveRight {
  right: 0;
}

@media only screen and (max-width: 900px) {
  .btn-nav {
    display: none;
  }
}

@media only screen and (min-width: 901px) {
  .container:hover .btn-nav,
  .container:hover .container-indicators {
    visibility: visible;
  }
}

const slider = document.querySelector(".slider");
const btnLeft = document.getElementById("moveLeft");
const btnRight = document.getElementById("moveRight");
const indicators = document.querySelectorAll(".indicator");

let baseSliderWidth = slider.offsetWidth;
let activeIndex = 0; // the current page on the slider

let movies = [
  {
    src:
      "https://images.unsplash.com/photo-1585951237318-9ea5e175b891?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80",
  },
  {
    src:
      "https://images.unsplash.com/photo-1579566346927-c68383817a25?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80",
  },

  {
    src:
      "https://images.unsplash.com/photo-1594736797933-d0501ba2fe65?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=674&q=80",
  },

  {
    src:
      "https://images.unsplash.com/photo-1617182635496-c5c474367085?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=634&q=80",
  },
  {
    src:
      "https://images.unsplash.com/photo-1611419010196-a360856fc42f?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=700&q=80",
  },
  {
    src:
      "https://images.unsplash.com/photo-1528495612343-9ca9f4a4de28?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=1267&q=80",
  },
  {
    src:
      "https://images.unsplash.com/photo-1518715303843-586e350765b2?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80",
  },
  {
    src:
      "https://images.unsplash.com/photo-1617258683488-df59909f25f0?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=644&q=80",
  },
  {
    src:
      "https://images.unsplash.com/photo-1543862809-2c9e0bcdc075?ixlib=rb-1.2.1&ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&auto=format&fit=crop&w=564&q=80",
  },
  {
    src:
      "https://images.unsplash.com/photo-1579156412503-f22426cc6386?ixlib=rb-1.2.1&ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&auto=format&fit=crop&w=1352&q=80",
  },
  {
    src:
      "https://images.unsplash.com/photo-1514068574489-503a8eb91592?ixlib=rb-1.2.1&ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&auto=format&fit=crop&w=1390&q=80",
  },
  {
    src:
      "https://images.unsplash.com/photo-1521714161819-15534968fc5f?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80",
  },
  {
    src:
      "https://images.unsplash.com/photo-1572188863110-46d457c9234d?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80",
  },
  {
    src:
      "https://images.unsplash.com/photo-1579702455224-c0dd4ac78234?ixlib=rb-1.2.1&ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&auto=format&fit=crop&w=1369&q=80",
  },

  {
    src:
      "https://images.unsplash.com/photo-1575470180257-7183ddca844f?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=701&q=80",
  },
  {
    src:
      "https://images.unsplash.com/photo-1584253660192-de72b033c220?ixlib=rb-1.2.1&ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&auto=format&fit=crop&w=1350&q=80",
  },
  {
    src:
      "https://images.unsplash.com/photo-1611523792722-16952e48cffa?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=700&q=80",
  },
  {
    src:
      "https://images.unsplash.com/photo-1536300007881-7e482242baa5?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80",
  },
];

// Fill the slider with all the movies in the "movies" array
function populateSlider() {
  movies.forEach((image) => {
    // Clone the initial movie thats included in the html, then replace the image with a different one
    const newMovie = document.getElementById("movie0");
    let clone = newMovie.cloneNode(true);
    let img = clone.querySelector("img");
    img.src = image.src;

    slider.insertBefore(clone, slider.childNodes[slider.childNodes.length - 1]);
  });
}

populateSlider();
populateSlider();

// delete the initial movie in the html
const initialMovie = document.getElementById("movie0");
initialMovie.remove();

// Update the indicators that show which page we're currently on
function updateIndicators(index) {
  indicators.forEach((indicator) => {
    indicator.classList.remove("active");
  });
  let newActiveIndicator = indicators[index];
  newActiveIndicator.classList.add("active");
}

// Scroll Left button
btnLeft.addEventListener("click", (e) => {
  let movieWidth = document.querySelector(".movie").getBoundingClientRect()
    .width;
  let scrollDistance = movieWidth * 6; // Scroll the length of 6 movies. TODO: make work for mobile because (4 movies/page instead of 6)

  slider.scrollBy({
    top: 0,
    left: -scrollDistance,
    behavior: "smooth",
  });
  activeIndex = (activeIndex - 1) % 3;
  console.log(activeIndex);
  updateIndicators(activeIndex);
});

// Scroll Right button
btnRight.addEventListener("click", (e) => {
  let movieWidth = document.querySelector(".movie").getBoundingClientRect()
    .width;
  let scrollDistance = movieWidth * 6; // Scroll the length of 6 movies. TODO: make work for mobile because (4 movies/page instead of 6)

  console.log(`movieWidth = ${movieWidth}`);
  console.log(`scrolling right ${scrollDistance}`);

  // if we're on the last page
  if (activeIndex == 2) {
    // duplicate all the items in the slider (this is how we make 'looping' slider)
    populateSlider();
    slider.scrollBy({
      top: 0,
      left: +scrollDistance,
      behavior: "smooth",
    });
    activeIndex = 0;
    updateIndicators(activeIndex);
  } else {
    slider.scrollBy({
      top: 0,
      left: +scrollDistance,
      behavior: "smooth",
    });
    activeIndex = (activeIndex + 1) % 3;
    console.log(activeIndex);
    updateIndicators(activeIndex);
  }
});

// slider.addEventListener("scroll", (e) => {
//   console.log(slider.scrollLeft);
//   console.log(slider.offsetWidth);
// });