<template>
    <div class="uk-container-expand">
        <div data-shaka-player-container>
            <video
                data-shaka-player
                autoplay
                style="width: 100%; height: 100%"
            ></video>
        </div>
    </div>
</template>

<script>
import("shaka-player/dist/controls.css");
const shaka = import("shaka-player/dist/shaka-player.ui.js");

export default {
    props: {
        video: Object,
        sponsors: Object,
        selectedAutoPlay: Boolean
    },
    methods: {
        loadVideo() {
            const videoEl = document.querySelector("video");

            videoEl.setAttribute("poster", this.video.thumbnailUrl);

            if (this.$route.query.t) videoEl.currentTime = this.$route.query.t;

            const noPrevPlayer = !this.player;

            var streams = [];

            streams.push(...this.video.audioStreams);
            streams.push(...this.video.videoStreams);

            const dash = require("@/utils/DashUtils.js").default.generate_dash_file_from_formats(
                streams,
                this.video.duration
            );

            if (noPrevPlayer)
                shaka
                    .then(shaka => shaka.default)
                    .then(shaka => {
                        this.shaka = shaka;
                        shaka.polyfill.installAll();

                        const player = new shaka.Player(videoEl);

                        this.player = player;

                        this.setPlayerAttrs(player, videoEl, dash, shaka);
                    });
            else this.setPlayerAttrs(this.player, videoEl, dash, this.shaka);

            if (noPrevPlayer) {
                videoEl.addEventListener("timeupdate", () => {
                    if (this.sponsors && this.sponsors.segments) {
                        const time = videoEl.currentTime;
                        this.sponsors.segments.map(segment => {
                            if (!segment.skipped) {
                                const end = segment.segment[1];
                                if (time >= segment.segment[0] && time < end) {
                                    console.log("Skipped segment at " + time);
                                    videoEl.currentTime = end;
                                    segment.skipped = true;
                                    return;
                                }
                            }
                        });
                    }
                });

                videoEl.addEventListener("volumechange", () => {
                    if (localStorage)
                        localStorage.setItem("volume", videoEl.volume);
                });

                videoEl.addEventListener("ended", () => {
                    if (
                        this.selectedAutoPlay &&
                        this.video.relatedStreams.length > 0
                    )
                        this.$router.push(this.video.relatedStreams[0].url);
                });
            }

            //TODO: Add sponsors on seekbar: https://github.com/ajayyy/SponsorBlock/blob/e39de9fd852adb9196e0358ed827ad38d9933e29/src/js-components/previewBar.ts#L12
        },
        setPlayerAttrs(player, videoEl, dash, shaka) {
            player
                .load(
                    "data:application/dash+xml;charset=utf-8;base64," +
                        btoa(dash)
                )
                .then(() => {
                    this.video.subtitles.map(subtitle => {
                        player.addTextTrack(
                            subtitle.url,
                            "eng",
                            "SUBTITLE",
                            subtitle.mimeType,
                            null,
                            "English"
                        );
                        player.setTextTrackVisibility(true);
                    });
                    if (localStorage)
                        videoEl.volume = localStorage.getItem("volume") || 1;

                    const ui =
                        this.ui ||
                        (this.ui = new shaka.ui.Overlay(
                            player,
                            document.querySelector(
                                "div[data-shaka-player-container]"
                            ),
                            videoEl
                        ));

                    const config = {
                        overflowMenuButtons: [
                            "quality",
                            "captions",
                            "playback_rate"
                        ],
                        seekBarColors: {
                            base: "rgba(255, 255, 255, 0.3)",
                            buffered: "rgba(255, 255, 255, 0.54)",
                            played: "rgb(255, 0, 0)"
                        }
                    };

                    ui.configure(config);
                });
        }
    },
    beforeUnmount() {
        if (this.player) {
            this.player.destroy();
            this.player = undefined;
            this.ui = undefined;
        }
    }
};
</script>
