<div id='app' class="page">
            <?php if (have_posts()):?>
                <div v-for="post in posts" :key="post.id" class="blogpage">
                  <h3>{{ post.title.rendered }}</h3>
                  <p> {{ formattedDate(post.date) }}</p>
                  <p v-html="post.content.rendered"></p>
                </div>
            <?php endif; ?>                
          </div>    
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script src="https://unpkg.com/moment@2.30.1/min/moment.min.js"></script>
<script src="<?= get_template_directory_uri() ?>/asset/Infinity.js?<?=time()?>" type="module" ></script>

import { ref, onMounted, onUnmounted, createApp } from 'https://unpkg.com/vue@3/dist/vue.esm-browser.js';

createApp({
    setup() {

        const posts = ref([]);
        const page = ref(1);
        const loading = ref(false);
        const hasMore = ref(true);

        onMounted(async () => {
            await fetchPosts();

            if (window.innerWidth < 600) {
                window.addEventListener('scroll', handleScroll);
            } else {
                document.querySelector('#app').addEventListener('scroll', handleScroll);
            }

        });

        onUnmounted(() => {
            if (window.innerWidth < 600) {
                document.documentElement.removeEventListener('scroll', handleScroll);
            } else {
                document.querySelector('#app').removeEventListener('scroll', handleScroll);
            }
        });
        const formattedDate = (dateString) => {
            return moment(dateString).format('YYYY年MM月DD日');
        };

        const fetchPosts = async () => {
            if (loading.value || !hasMore.value) return;

            loading.value = true;
            try {
                const response = await axios.get(`/wp-json/wp/v2/posts?page=${page.value}`);
                if (response?.data?.length) {
                    posts.value = [...posts.value, ...response.data];
                    page.value++;
                    hasMore.value = true;
                }else{
                    hasMore.value = false;
                }

            } catch (error) {
                //console.error(error);
            } finally {
                loading.value = false;
            }
        };

        const handleScroll = async () => {
            let scrollHeight = null;
            let clientHeight = null;
            let scrollTop = null;

            if (window.innerWidth < 600) {
                scrollHeight = document.documentElement.scrollHeight;
                clientHeight = document.documentElement.clientHeight;
                scrollTop = document.documentElement.scrollTop;

            } else {
                scrollHeight = document.querySelector('#app').scrollHeight;
                clientHeight = document.querySelector('#app').clientHeight;
                scrollTop = document.querySelector('#app').scrollTop;
            }

            if (scrollTop + clientHeight >= scrollHeight - 100 && hasMore.value) {
                await fetchPosts();
            }
        };
        return { posts, page, loading, hasMore, fetchPosts, handleScroll, formattedDate };
    }

}).mount('#app')