// ═══════════════════════════════════════════════════════════════════════
// ACTION EXECUTOR — carry out recommended actions
// ═══════════════════════════════════════════════════════════════════════

function executeAction(a) {
    if (!a) return false;
    let result = false;
    switch (a.type) {
        case 'attack':       result = attackMonster(a.target); break;
        case 'spell':        result = a.selfTarget ? castSelfSpell(a.name) : castTargetSpell(a.name, a.target); break;
        case 'skill':        result = useSkill(a.name, a.target); break;
        case 'item':         result = useItem(a.id); break;
    }
    if (result) {
        STATE._lastActionTime = Date.now();
    }
    return result;
}


function attackMonster(i) {
    if (i < 0 || i >= STATE.monsters.length) return false;
    const m = STATE.monsters[i];
    if (!m || !m.hasAttribute || !m.hasAttribute('onclick')) return false;
    m.click();
    return true;
}

function castSelfSpell(n) {
    const s = $$('.btsd[onclick]').find(el =>
        (el.getAttribute('onmouseover') || '').includes(`set_infopane_spell('${n}'`));
    if (!s) return false;
    s.click();
    return true;
}

function castTargetSpell(n, i) {
    const s = $$('.btsd[onclick]').find(el =>
        (el.getAttribute('onmouseover') || '').includes(`set_infopane_spell('${n}'`));
    if (!s) return false;
    s.click();
    // Target selection: click immediately, no setTimeout delay needed.
    // HV's native lock_action handles the state transition synchronously.
    if (i >= 0 && i < STATE.monsters.length) {
        const m = STATE.monsters[i];
        if (m && m.hasAttribute && m.hasAttribute('onclick')) m.click();
    }
    return true;
}

function useItem(id) {
    let it = document.getElementById('ikey_' + id);
    
    // Fallback for auto_ slot IDs (on-cooldown items without explicit DOM id):
    // search for element with matching onmouseover item ID
    if (!it && typeof id === 'string' && id.startsWith('auto_')) {
        const rawId = id.replace('auto_', '');
        const itemPane = document.getElementById('pane_item');
        if (itemPane) {
            it = $$('div[onmouseover*="set_infopane_item(' + rawId + ')"]', itemPane)[0];
        }
    }

    if (!it) return false;
    // Track that we used the P-slot gem so we don't retry stale state
    if (id === 'p') STATE._mysticUsed = true;
    dummy.setAttribute('onclick', it.getAttribute('onmouseover'));
    dummy.click();
    it.click();
    return true;
}

function useSkill(n, i) {
    let el = null;

    // Try quickbar first
    for (const e of $$('#quickbar > .btqs[onclick]')) {
        if ((e.getAttribute('onmouseover') || '').includes(`set_infopane_spell('${n}'`)) {
            el = e; break;
        }
    }
    // Try spellbook
    if (!el) {
        el = $$('.btsd[onclick]').find(e =>
            (e.getAttribute('onmouseover') || '').includes(`set_infopane_spell('${n}'`));
    }
    // Fallback: onclick match
    if (!el) {
        for (const e of $$('.btqb[onclick]')) {
            if ((e.getAttribute('onclick') || '').includes(n)) { el = e; break; }
        }
    }
    // Fallback: image match
    if (!el) {
        for (const e of $$('.btqb img')) {
            if ((e.src || '').toLowerCase().includes(n.toLowerCase().replace(/\s+/g, '_'))) {
                el = e.parentElement; break;
            }
        }
    }

    if (!el) return false;
    el.click();
    // Click target immediately — no setTimeout needed
    if (i >= 0 && i < STATE.monsters.length) {
        const m = STATE.monsters[i];
        if (m && m.hasAttribute && m.hasAttribute('onclick')) m.click();
    }
    return true;
}