<template>
    <div class="hashtag-component">
        <div class="container-fluid mt-3">
            <div class="row">
                <div class="col-md-3 d-md-block">
                    <sidebar :user="profile" />
                </div>
                <div class="col-md-9">
                    <div class="card border-0 shadow-sm mb-3" style="border-radius: 18px;">
                        <div class="card-body">
                            <div class="media align-items-center py-3">
                                <div class="media-body">
                                    <p class="h3 text-break mb-0">
                                        <span class="text-lighter">#</span>{{ hashtag.name }}
                                    </p>
                                    <p v-if="hashtag.count && hashtag.count > 100" class="mb-0 text-muted font-weight-bold">
                                        {{ formatCount(hashtag.count) }} Posts
                                    </p>
                                </div>
                                <template v-if="hashtag && hashtag.hasOwnProperty('following') && feed && feed.length">
                                    <button
                                    v-if="hashtag.following"
                                    :disabled="followingLoading"
                                    class="btn btn-light hashtag-follow border rounded-pill font-weight-bold py-1 px-4"
                                    @click="unfollowHashtag()"
                                    >
                                    <b-spinner v-if="followingLoading" small />
                                    <span v-else>
                                        {{ $t('profile.unfollow') }}
                                    </span>
                                    </button>

                                    <button
                                        v-else
                                        :disabled="followingLoading"
                                        class="btn btn-primary hashtag-follow font-weight-bold rounded-pill py-1 px-4"
                                        @click="followHashtag()">
                                        <b-spinner v-if="followingLoading" small />
                                        <span v-else>
                                            {{ $t('profile.follow') }}
                                        </span>
                                    </button>
                                </template>
                            </div>
                        </div>
                    </div>

                    <template v-if="isLoaded && feedLoaded">
                        <div class="row mx-0 hashtag-feed">
                            <div class="col-6 col-md-4 col-lg-3 p-1" v-for="(status, index) in feed" :key="'tlob:'+index">
                                <a
                                class="card info-overlay card-md-border-0"
                                :href="statusUrl(status)"
                                @click.prevent="goToPost(status)">
                                <div class="square">
                                    <div v-if="status.sensitive" class="square-content">
                                        <div class="info-overlay-text-label">
                                            <h5 class="text-white m-auto font-weight-bold">
                                                <span v-if="status.hasOwnProperty('filtered')">
                                                    <span class="far fa-eye-slash fa-lg p-2 d-flex-inline"></span>
                                                    <span>Filtered</span>
                                                </span>
                                                <span v-else>
                                                    <span class="far fa-eye-slash fa-lg p-2 d-flex-inline"></span>
                                                </span>
                                            </h5>
                                        </div>
                                        <blur-hash-canvas
                                        width="32"
                                        height="32"
                                        :hash="status.media_attachments[0].blurhash"
                                        />
                                    </div>
                                    <div v-else class="square-content">
                                        <blur-hash-image
                                        width="32"
                                        height="32"
                                        :hash="status.media_attachments[0].blurhash"
                                        :src="getMediaSource(status)"
                                        />
                                    </div>
                                    <span v-if="status.pf_type == 'photo:album'" class="float-right mr-3 post-icon"><i class="fas fa-images fa-2x"></i></span>
                                    <span v-if="status.pf_type == 'video'" class="float-right mr-3 post-icon"><i class="fas fa-video fa-2x"></i></span>
                                    <span v-if="status.pf_type == 'video:album'" class="float-right mr-3 post-icon"><i class="fas fa-film fa-2x"></i></span>
                                    <div class="info-overlay-text">
                                        <h5 class="text-white m-auto font-weight-bold d-flex flex-column" style="gap:.5rem;">
                                            <span>
                                                <span class="far fa-heart fa-lg p-2 d-flex-inline"></span>
                                                <span class="d-flex-inline">{{formatCount(status.favourites_count)}}</span>
                                            </span>
                                            <span>
                                                <span class="far fa-retweet fa-lg p-2 d-flex-inline"></span>
                                                <span class="d-flex-inline">{{formatCount(status.reblogs_count)}}</span>
                                            </span>
                                            <span>
                                                <span class="far fa-comment fa-lg p-2 d-flex-inline"></span>
                                                <span class="d-flex-inline">{{formatCount(status.reply_count)}}</span>
                                            </span>
                                        </h5>
                                    </div>
                                </div>
                            </a>
                        </div>

                        <div v-if="canLoadMore" class="col-12">
                            <intersect @enter="enterIntersect">
                                <div class="d-flex justify-content-center py-5">
                                    <b-spinner />
                                </div>
                            </intersect>


                        </div>
                        </div>

                        <div v-if="feedLoaded && !feed.length" class="row mx-0 hashtag-feed justify-content-center">
                            <div class="col-12 col-md-8 text-center">
                                <img src="/img/illustrations/dk-nature-man-monochrome.svg" class="img-fluid" style="opacity: 0.6;max-width:400px">
                                <p class="lead text-muted font-weight-bold">{{ $t('hashtags.emptyFeed') }}</p>
                            </div>
                        </div>
                    </template>

                    <template v-else>
                        <div class="row justify-content-center align-items-center pt-5 mt-5">
                            <b-spinner />
                        </div>
                    </template>
                </div>
            </div>

            <drawer />
        </div>
    </div>
</template>

<script type="text/javascript">
    import Drawer from './partials/drawer.vue';
    import Intersect from 'vue-intersect'
    import Sidebar from './partials/sidebar.vue';
    import Rightbar from './partials/rightbar.vue';

    export default {
        props: {
            id: {
                type: String
            }
        },

        components: {
            "drawer": Drawer,
            "intersect": Intersect,
            "sidebar": Sidebar,
            "rightbar": Rightbar,
        },

        data() {
            return {
                isLoaded: false,
                profile: undefined,
                canLoadMore: false,
                isIntersecting: false,
                feedLoaded: false,
                feed: [],
                page: 1,
                hashtag: {
                    name: this.id,
                    count: 0
                },
                followingLoading: false,
                maxId: undefined,
            };
        },

        mounted() {
            this.init();
        },

        watch: {
            '$route': 'init'
        },

        methods: {
            init() {
                this.profile = window._sharedData.user;
                axios.get('/api/v1/tags/' + this.id, {
                    params: {
                        '_pe': 1
                    }
                })
                .then(res => {
                    this.hashtag = res.data;
                })
                .catch(err => {
                    swal('Error', 'Something went wrong, please try again later!', 'error');
                    this.isLoaded = true;
                    this.feedLoaded = true;
                })
                .finally(() => {
                    this.fetchFeed();
                })
            },

            fetchFeed() {
                axios.get('/api/v1/timelines/tag/' + this.id, {
                    params: {
                        limit: 80,
                    }
                })
                .then(res => {
                    if(res.data && res.data.length) {
                        this.feed = res.data.map(s => {
                            if(s.filtered) {
                                s.sensitive = true;
                            }
                            return s;
                        });
                        this.maxId = res.data[res.data.length - 1].id;
                        this.canLoadMore = true;
                    } else {
                        this.feedLoaded = true;
                        this.isLoaded = true;
                    }
                })
                .finally(() => {
                    this.feedLoaded = true;
                    this.isLoaded = true;
                })
            },

            statusUrl(status) {
                return '/i/web/post/' + status.id;
            },

            formatCount(val) {
                return App.util.format.count(val);
            },

            enterIntersect() {
                if(this.isIntersecting) {
                    return;
                }

                this.isIntersecting = true;
                axios.get('/api/v1/timelines/tag/' + this.id, {
                    params: {
                        max_id: this.maxId,
                        limit: 40,
                    }
                })
                .then(res => {
                    if(res.data && res.data.length) {
                        const data = res.data.map(s => {
                            if(s.filtered) {
                                s.sensitive = true;
                            }
                            return s;
                        });
                        this.feed.push(...data);
                        this.maxId = res.data[res.data.length - 1].id;
                        this.canLoadMore = true;
                    } else {
                        this.canLoadMore = false;
                    }
                })
                .finally(() => {
                    this.isIntersecting = false;
                })
            },

            goToPost(status) {
                this.$router.push({
                    name: 'post',
                    path: `/i/web/post/${status.id}`,
                    params: {
                        id: status.id,
                        cachedStatus: status,
                        cachedProfile: this.profile
                    }
                })
            },

            followHashtag() {
                this.followingLoading = true;
                axios.post('/api/v1/tags/' + this.id + '/follow')
                .then(res => {
                    setTimeout(() => {
                        this.hashtag.following = true;
                        this.followingLoading = false;
                    }, 500);
                });
            },

            unfollowHashtag() {
                this.followingLoading = true;
                axios.post('/api/v1/tags/' + this.id + '/unfollow')
                .then(res => {
                    setTimeout(() => {
                        this.hashtag.following = false;
                        this.followingLoading = false;
                    }, 500);
                });
            },

            getMediaSource(status) {
                let media = status.media_attachments[0];

                if(media.preview_url && media.preview_url.endsWith('storage/no-preview.png')) {
                    return media.url;
                }

                if(media.preview_url && media.preview_url.length) {
                    return media.url;
                }

                return media.url;
            }
        }
    }
</script>

<style lang="scss">
.hashtag-component {
    .hashtag-feed {
        .card,
        .info-overlay-text,
        .info-overlay-text-label,
        img,
        canvas {
            border-radius: 18px !important;
        }
    }

    .hashtag-follow {
        width: 200px;
    }

    .ph-wrapper {
        padding: 0.25rem;

        .ph-item {
            margin: 0;
            padding: 0;
            border: none;
            background-color: transparent;

            .ph-picture {
                height: auto;
                padding-bottom: 100%;
                border-radius: 18px;
            }

            & > * {
                margin-bottom: 0;
            }
        }
    }
}
</style>
