# app.py
import logging
import sys
import os

from constants import FONT_MONO_NAME, FONT_FAMILY_SHORT

logging.basicConfig(level=logging.INFO, format='%(levelname)s: %(message)s')
logger = logging.getLogger(__name__)

# Force rebuild to fetch latest data from GitHub repo
logger.info("Starting OpenHands Index application")

# Setup mock data before anything else
try:
    from setup_data import setup_mock_data, start_background_refresh, CACHE_TTL_SECONDS
    setup_mock_data()
    logger.info("Data setup completed successfully")
    
    # Start background refresh scheduler (checks for new data every hour)
    start_background_refresh()
    logger.info(f"Background refresh scheduler started (interval: {CACHE_TTL_SECONDS}s)")
except Exception as e:
    logger.error(f"Error during data setup: {e}", exc_info=True)
    logger.warning("Continuing with app startup despite error")

import urllib.parse

import gradio as gr
from huggingface_hub import HfApi
from config import LEADERBOARD_PATH, LOCAL_DEBUG
from content import css
from main_page import build_page as build_main_page
from bug_fixing import build_page as build_bug_fixing_page
from app_creation import build_page as build_app_creation_page
from frontend_development import build_page as build_frontend_page
from test_generation import build_page as build_test_generation_page
from information_gathering import build_page as build_information_gathering_page
from alternative_agents_page import build_page as build_alternative_agents_page
from about import build_page as build_about_page

logger.info(f"All modules imported (LOCAL_DEBUG={LOCAL_DEBUG})")

api = HfApi()

# PostHog analytics (client-side)
POSTHOG_API_KEY = os.getenv("POSTHOG_API_KEY", "phc_ERBPfEE0gwNgkOBsxbHr1wh9mBsYcsw4zSLtvdA9RFg")
# OpenHands-Design typography (matches OpenHands-Design/index.html)
DESIGN_FONTS_LINK = """
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap" rel="stylesheet">
"""

posthog_script = f"""
<script>
    !function(t,e){{var o,n,p,r;e.__SV||(window.posthog && window.posthog.__loaded)||(window.posthog=e,e._i=[],e.init=function(i,s,a){{function g(t,e){{var o=e.split(".");2==o.length&&(t=t[o[0]],e=o[1]),t[e]=function(){{t.push([e].concat(Array.prototype.slice.call(arguments,0)))}}}}(p=t.createElement("script")).type="text/javascript",p.crossOrigin="anonymous",p.async=!0,p.src=s.api_host.replace(".i.posthog.com","-assets.i.posthog.com")+"/static/array.js",(r=t.getElementsByTagName("script")[0]).parentNode.insertBefore(p,r);var u=e;for(void 0!==a?u=e[a]=[]:a="posthog",u.people=u.people||[],u.toString=function(t){{var e="posthog";return"posthog"!==a&&(e+="."+a),t||(e+=" (stub)"),e}},u.people.toString=function(){{return u.toString(1)+".people (stub)"}},o="init ss us bi os hs es ns capture Bi calculateEventProperties cs register register_once register_for_session unregister unregister_for_session getFeatureFlag getFeatureFlagPayload isFeatureEnabled reloadFeatureFlags updateFlags updateEarlyAccessFeatureEnrollment getEarlyAccessFeatures on onFeatureFlags onSurveysLoaded onSessionId getSurveys getActiveMatchingSurveys renderSurvey displaySurvey cancelPendingSurvey canRenderSurvey canRenderSurveyAsync identify setPersonProperties group resetGroups setPersonPropertiesForFlags resetPersonPropertiesForFlags setGroupPropertiesForFlags resetGroupPropertiesForFlags reset get_distinct_id getGroups get_session_id get_session_replay_url alias set_config startSessionRecording stopSessionRecording sessionRecordingStarted captureException startExceptionAutocapture stopExceptionAutocapture loadToolbar get_property getSessionProperty ps vs createPersonProfile gs Zr ys opt_in_capturing opt_out_capturing has_opted_in_capturing has_opted_out_capturing get_explicit_consent_status is_capturing clear_opt_in_out_capturing ds debug O fs getPageViewId captureTraceFeedback captureTraceMetric Yr".split(" "),n=0;n<o.length;n++)g(u,o[n]);e._i.push([i,s,a])}},e.__SV=1)}}(document,window.posthog||[]);
    posthog.init('{POSTHOG_API_KEY}', {{
        api_host: 'https://us.i.posthog.com',
        defaults: '2025-11-30',
        person_profiles: 'identified_only',
    }})
</script>
"""

# JavaScripts
scroll_script = """
<script>
function scroll_to_element(id) {
    console.log("Global scroll_to_element called for ID:", id);
    const element = document.querySelector('#' + id);
    if (element) {
        console.log("Element found:", element);
        element.scrollIntoView({ behavior: 'smooth', block: 'start' });
    } else {
        console.error("Error: Element with ID '" + id + "' not found in the document.");
    }
}
</script>
"""
redirect_script = """
<script>
    if (window.location.pathname === '/') { window.location.replace('/home'); }
</script>
"""

# Gradio 5.30+ does not use .nav-holder — tag the real multipage links, then style via CSS
# (see: OpenHands-Design index.html top nav)
# IMPORTANT: do not strip all classes on every run — that unstyles the bar, changes layout, and
# makes getBoundingClientRect() unstable (layout thrash / "jumping" nav).
oh_top_nav_script = """
<script>
(function() {
    const ROUTE_PATHS = new Set(['/home', '/issue-resolution', '/greenfield', '/frontend', '/testing', '/information-gathering', '/about', '/alternative-agents']);
    var lastBar = null;
    var lastLinks = null;
    function pathKey(anchor) {
        try {
            var p = new URL(anchor.getAttribute('href') || '', window.location.origin).pathname.replace(/\\/$/, '') || '/';
            if (p === '/' || p === '') p = '/home';
            return p;
        } catch (e) { return null; }
    }
    function routePath(anchor) {
        var p = pathKey(anchor);
        return p && ROUTE_PATHS.has(p) ? p : null;
    }
    function getTopRowRouteLinks() {
        const g = document.querySelector('gradio-app');
        if (!g) return [];
        /* Only links inside the multipage <nav> — not intro/Markdown (avoids byPath picking a
           body <a> first, and drops the #page-content-wrapper filter that could hide the bar). */
        function routeLinksInNav(nav) {
            if (!nav) return [];
            return Array.from(nav.querySelectorAll('a[href]')).filter(function (a) { return routePath(a); });
        }
        /* Prefer the <nav> that contains the Home wordmark (avoids wrong <nav> + works if Svelte class hash changes). */
        var bar = getRouteNav() || g.querySelector('nav.svelte-ti537g');
        var candidates = routeLinksInNav(bar);
        if (candidates.length < 1) {
            const navs = g.querySelectorAll('nav');
            for (var i = 0; i < navs.length; i++) {
                const c = routeLinksInNav(navs[i]);
                if (c.length > 0) { bar = navs[i]; candidates = c; break; }
            }
        }
        if (candidates.length < 1) return [];
        /* Single top-nav link: still tag nav so wordmark/oh-top-nav CSS runs (avoids “missing logo / links stuck left” until 2+ links exist) */
        if (candidates.length === 1) {
            const a = candidates[0];
            const nav = a.closest("nav");
            if (nav && g.contains(nav)) {
                return [a];
            }
            return [];
        }
        const byPath = new Map();
        for (const a of candidates) {
            const p = pathKey(a);
            if (!p || !ROUTE_PATHS.has(p)) continue;
            if (!byPath.has(p)) {
                byPath.set(p, a);
            } else {
                const cur = byPath.get(p);
                const curP = new URL(cur.getAttribute('href') || '', window.location.origin).pathname;
                const newP = new URL(a.getAttribute('href') || '', window.location.origin).pathname;
                if (p === '/home' && (curP === '/' || curP === '') && newP === '/home') {
                    byPath.set(p, a);
                }
            }
        }
        const unique = Array.from(byPath.values());
        const tops = unique.map((x) => x.getBoundingClientRect().top);
        const minTop = Math.min.apply(null, tops);
        /* ~1 row; always keep /home (wordmark) even if y differs (e.g. from position:absolute layout) */
        return unique.filter((a) => {
            if (pathKey(a) === '/home') return true;
            return Math.abs(a.getBoundingClientRect().top - minTop) < 22;
        });
    }
    function lca(els) {
        if (els.length < 2) return els[0] && els[0].parentElement;
        const chain = (node) => { const a = []; for (let n = node; n; n = n.parentElement) a.push(n); return a; };
        let c = chain(els[0]);
        for (let i = 1; i < els.length; i++) {
            const d = new Set(chain(els[i]));
            c = c.filter((n) => d.has(n));
        }
        return c[0] || null;
    }
    function sameLinkSet(a, b) {
        if (!a || !b || a.length !== b.length) return false;
        const sb = new Set(b);
        for (var i = 0; i < a.length; i++) { if (!sb.has(a[i])) return false; }
        return true;
    }
    function isDetached(el) { return el && !document.body.contains(el); }
    function clearBar() {
        if (lastBar) { lastBar.classList.remove('oh-top-nav'); }
        if (lastLinks) { lastLinks.forEach(function (a) { a.classList.remove('oh-nav-link'); }); }
        lastBar = null;
        lastLinks = null;
    }
    /**
     * Multipage top bar: must NOT use the first <nav> in the app (there can be others).
     * The wordmark (first /home) lives in the same <nav> as the route row — that is the bar.
     * Svelte class hash can change, so do not rely only on nav.svelte-ti537g.
     */
    function getRouteNav() {
        var g = document.querySelector('gradio-app');
        if (!g) return null;
        var h = g.querySelector('a[href*="/home"]');
        if (h) {
            var n = h.closest('nav');
            if (n && g.contains(n)) { return n; }
        }
        n = g.querySelector('nav.oh-top-nav, nav.svelte-ti537g, .nav-holder nav, nav[role="navigation"]');
        if (n) return n;
        n = g.querySelector('nav');
        return n || null;
    }
    function applyOhNav() {
        if (lastLinks && (lastLinks.some(isDetached) || (lastBar && isDetached(lastBar)))) {
            lastBar = null;
            lastLinks = null;
        }
        const links = getTopRowRouteLinks();
        if (links.length < 1) {
            if (lastBar && lastLinks && !lastLinks.some(isDetached)) {
                return;
            }
            if (lastBar) { clearBar(); }
            return;
        }
        var row = lca(links);
        if (!row || row === document.body || (row.tagName && row.tagName.toLowerCase() === 'gradio-app')) {
            row = links[0].parentElement;
        }
        if (lastBar === row && lastLinks && sameLinkSet(lastLinks, links)) {
            return;
        }
        if (lastBar && lastBar !== row) { lastBar.classList.remove('oh-top-nav'); }
        if (lastLinks) { lastLinks.forEach(function (a) { a.classList.remove('oh-nav-link'); }); }
        if (row) { row.classList.add('oh-top-nav'); }
        links.forEach(function (a) {
            a.classList.add('oh-nav-link');
            if (pathKey(a) === '/home') {
                a.classList.add('oh-nav-wordmark');
                a.setAttribute('aria-label', 'OpenHands Home'); a.setAttribute('title', 'Home');
            }
        });
        lastBar = row;
        lastLinks = links.slice();
    }
    var deb;
    function scheduleApply() {
        if (deb) { clearTimeout(deb); }
        deb = setTimeout(function () { requestAnimationFrame(applyOhNav); }, 50);
    }
    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', function () { requestAnimationFrame(applyOhNav); });
    } else { requestAnimationFrame(applyOhNav); }
    requestAnimationFrame(function () { requestAnimationFrame(applyOhNav); });
    window.addEventListener('resize', scheduleApply, { passive: true });
    var obs = new MutationObserver(scheduleApply);
    var ga = document.querySelector('gradio-app');
    if (ga) { obs.observe(ga, { childList: true, subtree: true }); }
    else { document.addEventListener('DOMContentLoaded', function () { var g = document.querySelector('gradio-app'); if (g) obs.observe(g, { childList: true, subtree: true }); }); }
    try { if (typeof queueMicrotask === 'function') { queueMicrotask(applyOhNav); } } catch (e) {}
    setTimeout(applyOhNav, 0);
    setTimeout(applyOhNav, 50);
    setTimeout(applyOhNav, 500);
    setTimeout(applyOhNav, 2000);
})();
</script>
"""

# JavaScript to fix navigation links to use relative paths (avoids domain mismatch when behind proxy)
fix_nav_links_script = """
<script>
(function() {
    function fixNavLinks() {
        const navLinks = document.querySelectorAll('gradio-app nav.oh-top-nav a[href], gradio-app nav.svelte-ti537g a[href]');
        navLinks.forEach(link => {
            const href = link.getAttribute('href');
            if (href) {
                try {
                    const url = new URL(href, window.location.origin);
                    if (url.pathname === '/' || url.pathname === '') {
                        link.setAttribute('href', '/home');
                    } else if (url.pathname.startsWith('/')) {
                        link.setAttribute('href', url.pathname);
                    }
                } catch (e) {
                }
            }
            link.removeAttribute('target');
        });
    }
    
    // Run when DOM is ready
    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', fixNavLinks);
    } else {
        fixNavLinks();
    }
    
    // Also run periodically to catch dynamically added links
    setInterval(fixNavLinks, 1000);
})();
</script>
"""
tooltip_script = """
<script>
function initializeSmartTooltips() {
    // Find all tooltip trigger icons
    const tooltipIcons = document.querySelectorAll('.tooltip-icon-legend');

    tooltipIcons.forEach(icon => {
        // Find the tooltip card associated with this icon
        const tooltipCard = icon.querySelector('.tooltip-card');
        if (!tooltipCard) return;

        // Move the card to the end of the <body>. This is the KEY to escaping
        // any parent containers that might clip it.
        document.body.appendChild(tooltipCard);

        // --- MOUSE HOVER EVENT ---
        icon.addEventListener('mouseenter', () => {
            // Get the exact position of the icon on the screen
            const iconRect = icon.getBoundingClientRect();
            // Get the dimensions of the tooltip card
            const cardRect = tooltipCard.getBoundingClientRect();

            // Calculate the ideal top position (above the icon with a 10px gap)
            const top = iconRect.top - cardRect.height - 10;
            
            // --- Smart Centering Logic ---
            // Start by calculating the perfect center
            let left = iconRect.left + (iconRect.width / 2) - (cardRect.width / 2);

            // Check if it's going off the left edge of the screen
            if (left < 10) {
                left = 10; // Pin it to the left with a 10px margin
            }
            // Check if it's going off the right edge of the screen
            if (left + cardRect.width > window.innerWidth) {
                left = window.innerWidth - cardRect.width - 10; // Pin it to the right
            }

            // Apply the calculated position and show the card
            tooltipCard.style.top = `${top}px`;
            tooltipCard.style.left = `${left}px`;
            tooltipCard.classList.add('visible');
        });

        // --- MOUSE LEAVE EVENT ---
        icon.addEventListener('mouseleave', () => {
            // Hide the card
            tooltipCard.classList.remove('visible');
        });
    });
}

// Poll the page until the tooltips exist, then run the initialization.
const tooltipInterval = setInterval(() => {
    if (document.querySelector('.tooltip-icon-legend')) {
        clearInterval(tooltipInterval);
        initializeSmartTooltips();
    }
}, 200);
</script>
"""

# JavaScript to handle dark mode for Plotly charts and OpenHands logos
dark_mode_script = """
<script>
function updateChartsForDarkMode() {
    const isDark = document.body.classList.contains('dark');
    
    // Update Plotly chart backgrounds
    const plots = document.querySelectorAll('.js-plotly-plot');
    plots.forEach(plot => {
        if (plot._fullLayout) {
            Plotly.relayout(plot, {
                'paper_bgcolor': isDark ? '#1f1f1f' : 'white',
                'plot_bgcolor': isDark ? '#1f1f1f' : 'white',
                'font.color': isDark ? '#e0e0e0' : '#333',
                'xaxis.gridcolor': isDark ? '#242424' : '#d4d4d4',
                'yaxis.gridcolor': isDark ? '#242424' : '#d4d4d4',
            });
        }
    });
    
    // Swap OpenHands logos based on theme
    const images = document.querySelectorAll('.js-plotly-plot image');
    images.forEach(img => {
        const href = img.getAttribute('href') || img.getAttribute('xlink:href') || '';
        if (href.includes('openhands=lightlogo')) {
            img.style.display = isDark ? 'none' : '';
        } else if (href.includes('openhands=darklogo')) {
            img.style.display = isDark ? '' : 'none';
        }
    });
}

document.addEventListener('DOMContentLoaded', () => {
    setTimeout(updateChartsForDarkMode, 500);
    
    const observer = new MutationObserver((mutations) => {
        mutations.forEach((mutation) => {
            if (mutation.attributeName === 'class') {
                updateChartsForDarkMode();
            }
        });
    });
    observer.observe(document.body, { attributes: true });
    
    setInterval(updateChartsForDarkMode, 1000);
});
</script>
"""
# --- Theme Definition ---
# Aligned with OpenHands-Design (see OpenHands-Design/DESIGN.md, index.html)
# Near-black canvas, white primary CTA, neutral grey scale
_MUTED_GREEN = gr.themes.Color(
    c50="#f0fdf4", c100="#dcfce7", c200="#bbf7d0", c300="#86efac", c400="#4ade80",
    c500="#22c55e", c600="#16a34a", c700="#15803d", c800="#166534", c900="#14532d", c950="#052e16",
)
theme = gr.themes.Base(
    primary_hue=gr.themes.Color(
        c50="#fafafa", c100="#f4f4f5", c200="#e4e4e7", c300="#d4d4d8", c400="#a1a1aa",
        c500="#ffffff", c600="#f4f4f5", c700="#e4e4e7", c800="#d4d4d8", c900="#a1a1aa", c950="#71717a"
    ),
    secondary_hue=_MUTED_GREEN,
    neutral_hue=gr.themes.Color(
        c50="#fafafa", c100="#f4f4f4", c200="#e5e5e5", c300="#d4d4d4", c400="#a3a3a3",
        c500="#737373", c600="#525252", c700="#404040", c800="#262626", c900="#171717", c950="#0d0d0d"
    ),
    font=[FONT_FAMILY_SHORT, "system-ui", "sans-serif"],
    font_mono=[FONT_MONO_NAME, "ui-monospace", "SFMono-Regular", "Menlo", "monospace"],
).set(
    body_text_color="*neutral_950",
    body_text_color_subdued="*neutral_600",
    body_text_color_subdued_dark="*neutral_400",
    body_text_color_dark="*neutral_50",
    background_fill_primary="*neutral_50",
    background_fill_primary_dark="*neutral_950",
    background_fill_secondary="*neutral_100",
    background_fill_secondary_dark="*neutral_900",
    # Light: strokes match top nav (#e4e4e7); dark: DESIGN.md #242424 (--border / --input)
    border_color_accent="#e4e4e7",
    border_color_accent_subdued="#e4e4e7",
    border_color_accent_subdued_dark="#242424",
    # Primary border for inputs & dropdown chrome (maps to --border-color-primary in Gradio)
    border_color_primary="#e4e4e7",
    border_color_primary_dark="#242424",
    color_accent="*primary_500",
    color_accent_soft="*neutral_200",
    color_accent_soft_dark="*neutral_800",
    link_text_color="*neutral_700",
    link_text_color_dark="*neutral_300",
    link_text_color_active_dark="*primary_500",
    link_text_color_hover_dark="*neutral_50",
    link_text_color_visited_dark="*neutral_500",
    table_even_background_fill="*neutral_100",
    table_even_background_fill_dark="*neutral_900",
    button_primary_background_fill="*primary_500",
    button_primary_background_fill_dark="*primary_500",
    button_primary_background_fill_hover="*primary_600",
    button_primary_background_fill_hover_dark="*primary_600",
    button_secondary_background_fill="*neutral_200",
    button_secondary_background_fill_dark="*neutral_800",
    button_secondary_text_color="*neutral_900",
    button_secondary_text_color_dark="*neutral_50",
    block_title_text_color="*neutral_950",
    button_primary_text_color="*neutral_950",
    block_title_text_color_dark="*neutral_50",
    button_primary_text_color_dark="*neutral_950",
    block_border_color="#e4e4e7",
    block_border_color_dark="#242424",
    block_background_fill_dark="*neutral_900",
    block_background_fill="*neutral_50",
    checkbox_label_text_color="*neutral_900",
    checkbox_label_background_fill="*neutral_200",
    checkbox_label_background_fill_dark="*neutral_700",
    # Checkmark SVG is white; selected fill must not be white (this theme’s primary_500 = white → invisible)
    checkbox_background_color_selected="*neutral_950",
    checkbox_background_color_selected_dark="*neutral_600",
    # OpenHands-Design §4 Inputs: rounded-md (4px), border-border, bg-muted/40, text-sm, focus ring #ccc + offset
    input_radius="0.25rem",
    input_border_width="1px",
    input_border_color="*border_color_primary",
    input_border_color_dark="#242424",
    input_border_color_hover="*neutral_300",
    input_border_color_hover_dark="#2e2e2e",
    input_border_color_focus="#a1a1aa",
    input_border_color_focus_dark="#525252",
    input_background_fill="rgba(244, 244, 245, 0.75)",
    input_background_fill_dark="rgba(31, 31, 31, 0.45)",
    input_background_fill_hover="rgba(244, 244, 245, 0.9)",
    input_background_fill_hover_dark="rgba(31, 31, 31, 0.55)",
    input_background_fill_focus="rgba(229, 229, 234, 0.95)",
    input_background_fill_focus_dark="rgba(31, 31, 31, 0.65)",
    input_shadow="0 0 0 0 transparent",
    input_shadow_dark="0 0 0 0 transparent",
    input_shadow_focus="0 0 0 2px #fafafa, 0 0 0 3px #cccccc",
    input_shadow_focus_dark="0 0 0 2px #0d0d0d, 0 0 0 3px #cccccc",
    input_placeholder_color="*neutral_500",
    input_placeholder_color_dark="#8c8c8c",
    input_padding="8px 12px",
    input_text_size="*text_sm",
    input_text_weight="400",
    # Form labels (BlockTitle): text-sm font-medium (colors set above)
    block_title_text_size="*text_sm",
    block_title_text_weight="500",
    # Dropdown / popover elevation (§4 shadow-md)
    shadow_drop="0 1px 2px 0 rgba(0, 0, 0, 0.12)",
    shadow_drop_lg="0 4px 6px -1px rgba(0, 0, 0, 0.18), 0 2px 4px -2px rgba(0, 0, 0, 0.1)",
    # Checkboxes: align border with inputs
    checkbox_border_color="*neutral_300",
    checkbox_border_color_dark="#242424",
    checkbox_border_color_focus="#a1a1aa",
    checkbox_border_color_focus_dark="#525252",
    form_gap_width="12px",
)
# Top nav wordmark: on-light = black/dark ink (light bar, far left); on-dark = light ink (dark bar)
NAV_LOGO_SVG_LIGHT = "assets/openhands-logotype-on-light.svg"
NAV_LOGO_SVG_DARK = "assets/openhands-logotype-on-dark.svg"
try:
    with open(NAV_LOGO_SVG_LIGHT, "r", encoding="utf-8") as _f:
        _oh_nav_data_uri_light = f"data:image/svg+xml,{urllib.parse.quote(_f.read())}"
except OSError:
    _oh_nav_data_uri_light = "none"
try:
    with open(NAV_LOGO_SVG_DARK, "r", encoding="utf-8") as _f:
        _oh_nav_data_uri_dark = f"data:image/svg+xml,{urllib.parse.quote(_f.read())}"
except OSError:
    _oh_nav_data_uri_dark = "none"

# Early decode to reduce first-paint logo flicker (data URI, no extra network)
NAV_LOGO_PRELOAD = (
    f'<span class="oh-nav-logotype-preload" aria-hidden="true" style="position:absolute;width:0;height:0;overflow:hidden;clip:rect(0,0,0,0)">'
    f'<img src="{_oh_nav_data_uri_light}" width="160" height="40" alt="" decoding="async" fetchpriority="high"/>'
    f'<img src="{_oh_nav_data_uri_dark}" width="160" height="40" alt="" decoding="async" fetchpriority="low"/>'
    f"</span>"
)

# --- This is the final CSS --- (appended after content.css so it wins the cascade for Home)
final_css = (
    css
    + f"""
/* Multipage: trim duplicate /, hide unstyled duplicate Gradio <a> */
gradio-app nav a[href$="/"] {{ display: none !important; }}
gradio-app .nav-holder nav a[href="/home"]:not(.oh-nav-link) {{ display: none !important; }}
/* Wordmark (Gradio /home): pinned top-left; no transition (reduces paint flicker) */
gradio-app nav.svelte-ti537g a[href*="/home"],
gradio-app .nav-holder nav a[href*="/home"],
gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"] {{
    position: absolute !important;
    left: 20px !important;
    top: 0 !important;
    bottom: 0 !important;
    margin: auto 0 !important;
    z-index: 2 !important;
    display: inline-flex !important;
    align-items: center !important;
    font-size: 0 !important;
    line-height: 0 !important;
    text-indent: -9999px;
    color: transparent !important;
    overflow: hidden !important;
    width: min(133px, 42vw) !important;
    min-width: 80px !important;
    min-height: 22px !important;
    max-width: 133px !important;
    height: 22px !important;
    max-height: 22px !important;
    box-sizing: content-box !important;
    padding: 6px 12px 6px 12px !important;
    flex: 0 0 auto !important;
    flex-shrink: 0 !important;
    background-color: transparent !important;
    background-image: url("{_oh_nav_data_uri_light}") !important;
    background-size: contain !important;
    background-repeat: no-repeat !important;
    background-position: left center !important;
    border: none !important;
    box-shadow: none !important;
    border-radius: 6px !important;
    transition: none !important;
}}
/* Dark top bar: light-colored wordmark */
html.dark gradio-app nav.svelte-ti537g a[href*="/home"],
html.dark gradio-app .nav-holder nav a[href*="/home"],
html.dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"],
body.dark gradio-app nav.svelte-ti537g a[href*="/home"],
body.dark gradio-app .nav-holder nav a[href*="/home"],
body.dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"],
html:has([class*="gradio-container-"].dark) gradio-app nav.svelte-ti537g a[href*="/home"],
html:has([class*="gradio-container-"].dark) gradio-app .nav-holder nav a[href*="/home"],
html:has([class*="gradio-container-"].dark) gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"],
.gradio-container.dark gradio-app nav.svelte-ti537g a[href*="/home"],
.gradio-container.dark gradio-app .nav-holder nav a[href*="/home"],
.gradio-container.dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"],
[class*="gradio-container-"].dark gradio-app nav.svelte-ti537g a[href*="/home"],
[class*="gradio-container-"].dark gradio-app .nav-holder nav a[href*="/home"],
[class*="gradio-container-"].dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"] {{
    background-image: url("{_oh_nav_data_uri_dark}") !important;
}}
/* Home wordmark: no grey hover/focus chip */
gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"]:hover,
gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"]:focus-visible,
gradio-app nav.svelte-ti537g a[href*="/home"]:hover,
html.dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"]:hover,
html.dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"]:focus-visible,
html.dark gradio-app nav.svelte-ti537g a[href*="/home"]:hover,
body.dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"]:hover,
body.dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"]:focus-visible,
body.dark gradio-app nav.svelte-ti537g a[href*="/home"]:hover,
html:has([class*="gradio-container-"].dark) gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"]:hover,
html:has([class*="gradio-container-"].dark) gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"]:focus-visible,
html:has([class*="gradio-container-"].dark) gradio-app nav.svelte-ti537g a[href*="/home"]:hover,
.gradio-container.dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"]:hover,
.gradio-container.dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"]:focus-visible,
.gradio-container.dark gradio-app nav.svelte-ti537g a[href*="/home"]:hover,
[class*="gradio-container-"].dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"]:hover,
[class*="gradio-container-"].dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"]:focus-visible,
[class*="gradio-container-"].dark gradio-app nav.svelte-ti537g a[href*="/home"]:hover {{
    background-color: transparent !important;
}}
@media (max-width: 768px) {{
  gradio-app nav.svelte-ti537g a[href*="/home"],
  gradio-app .nav-holder nav a[href*="/home"],
  gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"] {{
    left: 20px !important;
  }}
  gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"]:hover,
  gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"]:focus-visible,
  gradio-app nav.svelte-ti537g a[href*="/home"]:hover {{
    left: 20px !important;
  }}
}}
/* Active Home (wordmark — route .active) */
gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"].active,
gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"].svelte-ti537g.active {{
    color: transparent !important;
    left: 20px !important;
    top: 0 !important;
    bottom: 0 !important;
    margin: auto 0 !important;
    background-color: #e4e4e7 !important;
    background-image: url("{_oh_nav_data_uri_light}") !important;
    background-size: contain !important;
    background-repeat: no-repeat !important;
    background-position: left center !important;
    border-color: transparent !important;
    box-shadow: none !important;
}}
html.dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"].active,
html.dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"].svelte-ti537g.active,
body.dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"].active,
body.dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"].svelte-ti537g.active,
html:has([class*="gradio-container-"].dark) gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"].active,
html:has([class*="gradio-container-"].dark) gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"].svelte-ti537g.active,
.gradio-container.dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"].active,
.gradio-container.dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"].svelte-ti537g.active,
[class*="gradio-container-"].dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"].active,
[class*="gradio-container-"].dark gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"].svelte-ti537g.active {{
    background-color: hsl(0 0% 12% / 0.95) !important;
    background-image: url("{_oh_nav_data_uri_dark}") !important;
}}
@media (max-width: 768px) {{
  gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"].active,
  gradio-app nav.oh-top-nav a.oh-nav-link[href*="/home"].svelte-ti537g.active {{
    left: 20px !important;
  }}
}}
/* Markdown `---` → <hr>. var(--oh-border) = light #e4e4e7 / dark #242424 (content.py). */
gradio-app hr, .gradio-container hr, [class*="gradio-container-"] hr {{
    box-sizing: border-box !important;
    border: 0 !important;
    border-top: 1px solid var(--oh-border) !important;
    color: var(--oh-border) !important;
    background: transparent !important;
    background-color: transparent !important;
    height: 0 !important;
    opacity: 1 !important;
}}
/* Multipage route chips: Gradio 5.30 index bundle sets
   a.active.svelte-ti537g {{ color: var(--body-text-color); background: var(--block-background-fill) }}.
   This block is last in final_css; typography matches route chip rules in content.py (13px) for every tab including active. */
gradio-app nav a.svelte-ti537g.active:not([href*="/home"]) {{
    color: #fafafa !important;
    background-color: #18181b !important;
    border-color: transparent !important;
    box-shadow: none !important;
    transition: none !important;
    font-size: 13px !important;
    line-height: 1.4 !important;
    font-weight: 400 !important;
    font-family: var(--oh-font-sans) !important;
}}
html.dark gradio-app nav a.svelte-ti537g.active:not([href*="/home"]),
body.dark gradio-app nav a.svelte-ti537g.active:not([href*="/home"]),
html:has([class*="gradio-container-"].dark) gradio-app nav a.svelte-ti537g.active:not([href*="/home"]),
.gradio-container.dark gradio-app nav a.svelte-ti537g.active:not([href*="/home"]),
[class*="gradio-container-"].dark gradio-app nav a.svelte-ti537g.active:not([href*="/home"]) {{
    color: #ffffff !important;
    background-color: hsl(0 0% 12% / 0.95) !important;
    border-color: transparent !important;
    box-shadow: none !important;
    transition: none !important;
    font-size: 13px !important;
    line-height: 1.4 !important;
    font-weight: 400 !important;
    font-family: var(--oh-font-sans) !important;
}}
"""
)
# --- Gradio App Definition ---
logger.info("Creating Gradio application")
demo = gr.Blocks(
    theme=theme,
    css=final_css,
    head=DESIGN_FONTS_LINK
    + NAV_LOGO_PRELOAD
    + posthog_script
    + scroll_script
    + redirect_script
    + oh_top_nav_script
    + fix_nav_links_script
    + tooltip_script
    + dark_mode_script,
    title="OpenHands Index",
)

with demo.route("Home", "/home"):
    build_main_page()

with demo.route("Issue Resolution", "/issue-resolution"):
    build_bug_fixing_page()

with demo.route("Greenfield", "/greenfield"):
    build_app_creation_page()

with demo.route("Frontend", "/frontend"):
    build_frontend_page()

with demo.route("Testing", "/testing"):
    build_test_generation_page()

with demo.route("Information Gathering", "/information-gathering"):
    build_information_gathering_page()

with demo.route("Alternative Agents", "/alternative-agents"):
    build_alternative_agents_page()

with demo.route("About", "/about"):
    build_about_page()

logger.info("All routes configured")

# Mount the REST API on /api
from fastapi import FastAPI, Request
from fastapi.responses import RedirectResponse
from starlette.middleware.base import BaseHTTPMiddleware
from api import api_app


class RootRedirectMiddleware(BaseHTTPMiddleware):
    """Middleware to redirect root path "/" to "/home".
    
    This fixes the 307 trailing slash redirect issue (Gradio bug #11071) that 
    occurs when Gradio is mounted at "/" - FastAPI's default behavior redirects 
    "/" to "//", which breaks routing on HuggingFace Spaces.
    
    See: https://github.com/gradio-app/gradio/issues/11071
    """
    async def dispatch(self, request: Request, call_next):
        if request.url.path == "/":
            return RedirectResponse(url="/home", status_code=302)
        return await call_next(request)


# Create a parent FastAPI app with redirect_slashes=False to prevent
# automatic trailing slash redirects that cause issues with Gradio
root_app = FastAPI(redirect_slashes=False)

# Add middleware to handle root path redirect to /home
root_app.add_middleware(RootRedirectMiddleware)

root_app.mount("/api", api_app)

# Mount Gradio app at root path
app = gr.mount_gradio_app(root_app, demo, path="/")
logger.info("REST API mounted at /api, Gradio app mounted at /")


# Launch the app
if __name__ == "__main__":
    import uvicorn
    # Respect platform port/host if provided (e.g., OpenHands runtime)
    port = int(os.environ.get("PORT", os.environ.get("GRADIO_SERVER_PORT", 7860)))
    host = os.environ.get("HOST", os.environ.get("GRADIO_SERVER_NAME", "0.0.0.0"))
    # Auto-reload: set RELOAD=1 or UVICORN_RELOAD=1 to restart on .py changes (CSS in content.py, etc.)
    _reload = os.environ.get("UVICORN_RELOAD", os.environ.get("RELOAD", "")).lower() in (
        "1",
        "true",
        "yes",
    )
    logger.info(f"Launching app on {host}:{port}" + (" (auto-reload on .py changes)" if _reload else ""))
    if _reload:
        uvicorn.run("app:app", host=host, port=port, reload=True)
    else:
        uvicorn.run(app, host=host, port=port)
    logger.info("App launched successfully")