/* ===================================================
   JAESWIFT BLOG — Post loader + Cyberpunk stats
   =================================================== */
(function () {
    'use strict';

    const API = window.location.hostname === 'localhost'
        ? 'http://localhost:5000'
        : '/api';

    // ─── Clock ───
    function initClock() {
        const el = document.getElementById('navClock');
        if (!el) return;
        const tick = () => {
            const d = new Date();
            el.textContent = d.toLocaleTimeString('en-GB', { hour12: false }) + ' UTC' + (d.getTimezoneOffset() <= 0 ? '+' : '') + (-d.getTimezoneOffset() / 60);
        };
        tick();
        setInterval(tick, 1000);
    }

    // ─── Navbar ───
    function initNavbar() {
        const toggle = document.getElementById('navToggle');
        const menu = document.getElementById('navMenu');
        if (toggle && menu) {
            toggle.addEventListener('click', () => menu.classList.toggle('active'));
        }
        window.addEventListener('scroll', () => {
            document.getElementById('navbar')?.classList.toggle('scrolled', window.scrollY > 50);
        }, { passive: true });
    }

    // ─── Build Stat Pips ───
    function buildPips(val, max = 5) {
        let html = '<div class="stat-bar-container">';
        for (let i = 0; i < max; i++) {
            const filled = i < val;
            let cls = 'stat-pip';
            if (filled) {
                cls += ' filled';
                if (val <= 2) cls += ' danger';
                else if (val <= 3) cls += ' warn';
            }
            html += `<div class="${cls}"></div>`;
        }
        html += '</div>';
        return html;
    }

    // ─── Coffee Icons ───
    function buildCoffee(val) {
        val = Math.max(0, Math.min(5, val || 0));
        return '<span class="stat-coffee">' + '☕'.repeat(val) + '<span style="opacity:0.2">' + '☕'.repeat(5 - val) + '</span></span>';
    }

    // ─── Render Post Card ───
    function renderPostCard(post) {
        return `
        <article class="post-card" onclick="window.location='/blog/post/${post.slug}'" data-tags="${(post.tags || []).join(',')}">
            <div class="post-card-content">
                <div class="post-card-meta">
                    <span class="post-date">${post.date}</span>
                    <span class="post-threat threat-${post.threat_level}">${post.threat_level}</span>
                    <span class="post-time">${post.time_written || ''}</span>
                </div>
                <h2 class="post-card-title">${post.title}</h2>
                <p class="post-card-excerpt">${post.excerpt}</p>
                <div class="post-card-tags">
                    ${(post.tags || []).map(t => `<span class="post-tag">${t}</span>`).join('')}
                </div>
            </div>
            <div class="post-card-stats">
                <div class="stats-header">OPERATOR STATUS</div>
                <div class="stat-row">
                    <span class="stat-row-label">MOOD</span>
                    ${buildPips(post.mood)}
                </div>
                <div class="stat-row">
                    <span class="stat-row-label">ENERGY</span>
                    ${buildPips(post.energy)}
                </div>
                <div class="stat-row">
                    <span class="stat-row-label">MOTIVE</span>
                    ${buildPips(post.motivation)}
                </div>
                <div class="stat-row">
                    <span class="stat-row-label">FOCUS</span>
                    ${buildPips(post.focus)}
                </div>
                <div style="text-align:center; margin-top:0.25rem;">
                    <div class="stat-bpm">${post.heart_rate} <span class="stat-bpm-label">BPM</span></div>
                </div>
                <div style="text-align:center;">
                    ${buildCoffee(post.coffee)}
                </div>
            </div>
        </article>`;
    }

    // ─── Load Posts ───
    async function loadPosts() {
        const grid = document.getElementById('blogPosts');
        if (!grid) return;

        try {
            const res = await fetch(API + '/posts');
            if (!res.ok) throw new Error('API ' + res.status);
            const posts = await res.json();

            if (!Array.isArray(posts) || posts.length === 0) {
                grid.innerHTML = '<div class="blog-loading">NO TRANSMISSIONS FOUND</div>';
                return;
            }

            // Sort by date descending
            posts.sort((a, b) => new Date(b.date) - new Date(a.date));

            // Render each card with individual error protection
            let html = '';
            posts.forEach((post, idx) => {
                try {
                    html += renderPostCard(post);
                } catch (cardErr) {
                    console.error('Card render error for post ' + idx + ':', cardErr);
                    html += '<article class="post-card"><div class="post-card-content" style="padding:1.5rem"><h2 class="post-card-title">RENDER ERROR</h2><p style="color:#ff4444;font-size:0.8rem">' + cardErr.message + '</p></div></article>';
                }
            });
            grid.innerHTML = html;

            // Animate cards in
            const cards = grid.querySelectorAll('.post-card');
            cards.forEach((card, i) => {
                card.style.opacity = '0';
                card.style.transform = 'translateY(20px)';
                card.style.transition = 'all 0.5s ease';
                setTimeout(() => {
                    card.style.opacity = '1';
                    card.style.transform = 'translateY(0)';
                }, 100 + i * 150);
            });

        } catch (err) {
            console.error('Blog primary load error:', err);
            // Fallback: load from static JSON (absolute path)
            try {
                const res2 = await fetch('/api/data/posts.json');
                if (!res2.ok) throw new Error('Fallback ' + res2.status);
                const posts = await res2.json();
                posts.sort((a, b) => new Date(b.date) - new Date(a.date));
                grid.innerHTML = posts.map(renderPostCard).join('');
                const cards = grid.querySelectorAll('.post-card');
                cards.forEach((card, i) => {
                    card.style.opacity = '0';
                    card.style.transform = 'translateY(20px)';
                    card.style.transition = 'all 0.5s ease';
                    setTimeout(() => {
                        card.style.opacity = '1';
                        card.style.transform = 'translateY(0)';
                    }, 100 + i * 150);
                });
            } catch (e2) {
                console.error('Blog fallback error:', e2);
                grid.innerHTML = '<div class="blog-loading">TRANSMISSION ERROR: ' + err.message + ' / FALLBACK: ' + e2.message + '</div>';
            }
        }
    }
    function initFilters() {
        const btns = document.querySelectorAll('.filter-btn');
        btns.forEach(btn => {
            btn.addEventListener('click', () => {
                btns.forEach(b => b.classList.remove('active'));
                btn.classList.add('active');
                const filter = btn.dataset.filter;
                const cards = document.querySelectorAll('.post-card');
                cards.forEach(card => {
                    const tags = card.dataset.tags || '';
                    if (filter === 'all' || tags.includes(filter)) {
                        card.style.display = '';
                        card.style.opacity = '1';
                    } else {
                        card.style.opacity = '0';
                        setTimeout(() => { card.style.display = 'none'; }, 300);
                    }
                });
            });
        });
    }

    // ─── Init ───
    document.addEventListener('DOMContentLoaded', () => {
        initClock();
        initNavbar();
        loadPosts();
        initFilters();
    });
})();