// ═══════════════════════════════════════════════════════════════════════
// PAGE DETECTOR — detect current page and player level
// ═══════════════════════════════════════════════════════════════════════

function detectPage() {
    // Battle page detection by DOM elements (most reliable)
    if (document.getElementById('textlog') ||
        document.getElementById('riddlemaster') ||
        document.getElementById('pane_vitals') ||
        document.getElementById('battle_root')) {
        return 'battle';
    }

    // URL-based page detection
    const url = window.location.href || '';
    const pages = {
        'ss=ch': 'character',
        'ss=eq': 'equipshop',
        'ss=is': 'itemshop',
        'ss=am': 'armory',
        'ss=ar': 'arena',
        'ss=gr': 'grindfest',
        'ss=iw': 'itemworld',
        'ss=ml': 'monsterlab',
        'ss=sh': 'shrine',
        'ss=mm': 'mooglemail',
        'ss=tr': 'training',
        'ss=rb': 'ring',
        'ss=re': 'repair',
        'ss=up': 'upgrade',
        'ss=en': 'enchant',
        'ss=sv': 'salvage',
        'ss=rf': 'reforge',
        'ss=sf': 'soulfuse',
        'ss=ab': 'abilities',
        'ss=ml': 'monster',
        'ss=it': 'invitems',
        'ss=se': 'settings',
        'ss=ss': 'spiritshop',
        'ss=mk': 'market',
        'ss=lt': 'lottery',
        'ss=la': 'lastarena',
    };
    for (const [param, page] of Object.entries(pages)) {
        if (url.includes(param)) return page;
    }

    return 'bazaar';
}

function isBattlePage() {
    return !!(document.getElementById('textlog') ||
              document.getElementById('riddlemaster') ||
              document.getElementById('pane_vitals'));
}

function detectLevel() {
    const container = document.querySelector('#level_readout > div');
    if (!container) {
        try {
            const s = parseInt(localStorage[SP + 'playerLevel']);
            if (s > 0) STATE.level = s;
        } catch (e) {}
        return;
    }

    // Battle page format: innerText = "Normal Lv.10"
    const text = (container.innerText || container.textContent || '').trim();
    const textMatch = text.match(/(\w+)\s+Lv\.?\s*(\d+)/);
    if (textMatch) {
        STATE.difficulty = textMatch[1];
        STATE.level = parseInt(textMatch[2]) || 1;
        updateTier();
        return;
    }

    // CSS-font rendering (overworld page): "Nightmare Lv.52"
    const cssText = readCSSText(container);
    const cssMatch = cssText.match(/(\w+)\s+lv\.\s*(\d+)/i);
    if (cssMatch) {
        STATE.difficulty = cssMatch[1].charAt(0).toUpperCase() + cssMatch[1].slice(1);
        cacheDifficulty();
    }

    // CSS-digit rendering for level number
    const digits = readCSSDigits(container);
    if (digits !== null && digits > 0) {
        STATE.level = digits;
        updateTier();
    }

    if (STATE.level > 1) {
        try { localStorage[SP + 'playerLevel'] = STATE.level; } catch (e) {}
    }
}

function updateTier() {
    const lv = STATE.level || 1;
    STATE.tier = lv >= 300 ? 'master' : lv >= 150 ? 'veteran' : lv >= 50 ? 'adept' : 'novice';
}