/**
 * NIS2 Agile - Modello Organizzativo SGSI (ISO 27001/27017/27018)
 * Wizard 6 step: Contesto → Leadership → Risk → SoA → Documenti → Monitoraggio.
 * Pattern coerente con le altre pagine: client api.* che ritorna `data` e lancia su errore.
 */
'use strict';

const STEP_KEYS = ['isms.step1','isms.step2','isms.step3','isms.step4','isms.step5','isms.step6'];
const STEP_FALLBACK = ['Contesto','Leadership','Risk','SoA','Documenti','Monitoraggio'];
const THEME_LABELS = {
    organizational: { it:'Organizzativi', en:'Organizational' },
    people:         { it:'Persone', en:'People' },
    physical:       { it:'Fisici', en:'Physical' },
    technological:  { it:'Tecnologici', en:'Technological' },
    privacy:        { it:'Privacy (PII)', en:'Privacy (PII)' }
};

let ISMS = { model:null, step:0, soaLoaded:false };
let soaSaveTimer = {};

function lang(){ try { return I18n.getLang ? I18n.getLang() : 'it'; } catch(e){ return 'it'; } }
function el(id){ return document.getElementById(id); }
function esc(s){ const d=document.createElement('div'); d.textContent=s==null?'':String(s); return d.innerHTML; }
function hint(id, msg){ const e=el(id); if(e){ e.textContent=msg; } }

document.addEventListener('DOMContentLoaded', async function(){
    if (typeof checkAuth==='function' && !checkAuth()) return;
    if (window.I18n && I18n.init) I18n.init('it');
    if (typeof loadSidebar==='function') loadSidebar();
    if (window.HelpSystem && HelpSystem.init) HelpSystem.init();
    renderSteps();
    await loadModel();
});

function renderSteps(){
    let html='';
    STEP_FALLBACK.forEach(function(lbl, i){
        const t = (window.I18n && I18n.t) ? I18n.t(STEP_KEYS[i]) : lbl;
        html += '<div class="isms-step" id="step-'+i+'" onclick="goStep('+i+')"><div class="num">'+(i+1)+'</div><div>'+esc(t&&t!==STEP_KEYS[i]?t:lbl)+'</div></div>';
    });
    el('isms-steps').innerHTML = html;
}

function goStep(i){
    ISMS.step = i;
    document.querySelectorAll('.isms-panel').forEach(function(p){ p.classList.remove('active'); });
    const panel = el('panel-'+i); if (panel) panel.classList.add('active');
    document.querySelectorAll('.isms-step').forEach(function(s,idx){ s.classList.toggle('active', idx===i); });
    if (i===1) loadRoles();
    if (i===3) loadSoa();
    if (i===4) loadDocs();
    if (i===5) loadReadiness();
    window.scrollTo({top:0,behavior:'smooth'});
}

async function loadModel(){
    try {
        const res = await api.ismsGetModel();
        ISMS.model = res.model;
        if (ISMS.model) fillStep1(ISMS.model);
        markDone();
    } catch(e){ /* tabella non ancora migrata o nessun modello: si parte da zero */ }
    goStep(0);
}

function fillStep1(m){
    el('f-scope').value = m.scope_statement||'';
    el('f-ctx-int').value = m.context_internal||'';
    el('f-ctx-ext').value = m.context_external||'';
    el('f-parties').value = (m.interested_parties||[]).join('\n');
    el('f-boundaries').value = m.boundaries||'';
    el('f-exclusions').value = m.exclusions||'';
    el('f-uses-cloud').checked = !!m.uses_public_cloud;
    el('f-cloud-provider').checked = !!m.is_cloud_provider;
    el('f-pii-cloud').checked = !!m.processes_pii_in_cloud;
    if (m.risk_methodology!==undefined) el('f-method').value = m.risk_methodology||'';
    el('f-objectives').value = (m.isms_objectives||[]).join('\n');
}

function linesToArr(v){ return (v||'').split('\n').map(function(s){return s.trim();}).filter(Boolean); }

async function saveStep1(){
    const data = {
        scope_statement: el('f-scope').value,
        context_internal: el('f-ctx-int').value,
        context_external: el('f-ctx-ext').value,
        interested_parties: linesToArr(el('f-parties').value),
        boundaries: el('f-boundaries').value,
        exclusions: el('f-exclusions').value,
        uses_public_cloud: el('f-uses-cloud').checked,
        is_cloud_provider: el('f-cloud-provider').checked,
        processes_pii_in_cloud: el('f-pii-cloud').checked
    };
    try {
        await api.ismsSaveModel(data);
        hint('isms-savehint', lang()==='en'?'Saved':'Salvato');
        ISMS.soaLoaded = false; // i flag cloud cambiano il perimetro SoA
        await loadModel();
        goStep(1);
    } catch(e){ alert((e&&e.message)||'Errore'); }
}

async function saveStep3(){
    try {
        await api.ismsSaveModel({ risk_methodology: el('f-method').value, isms_objectives: linesToArr(el('f-objectives').value) });
        hint('isms-savehint', lang()==='en'?'Saved':'Salvato');
        await loadModel();
        goStep(3);
    } catch(e){ alert((e&&e.message)||'Errore'); }
}

// ── Ruoli (cl.5) ──
async function loadRoles(){
    try {
        const res = await api.ismsRoles();
        let html='';
        (res.roles||[]).forEach(function(r){
            html += '<div class="raci-row"><span class="soa-code">'+(r.raci||'-')+'</span>'+
                '<strong style="flex:1 1 140px;">'+esc(r.role_name)+'</strong>'+
                '<span style="flex:2 1 200px; color:var(--gray-500,#6b7280); font-size:.85rem;">'+esc(r.responsibility||'')+'</span>'+
                '<button class="btn btn-sm btn-outline" onclick="delRole('+r.id+')">×</button></div>';
        });
        el('roles-list').innerHTML = html || '<p class="text-muted">'+(lang()==='en'?'No roles yet.':'Nessun ruolo definito.')+'</p>';
    } catch(e){ el('roles-list').innerHTML='<p class="text-muted">'+esc((e&&e.message)||'')+'</p>'; }
}
async function addRole(){
    const name = el('r-name').value.trim();
    if(!name){ return; }
    try {
        await api.ismsSaveRole({ role_name:name, responsibility:el('r-resp').value, raci:el('r-raci').value });
        el('r-name').value=''; el('r-resp').value=''; el('r-raci').value='';
        loadRoles(); markDone();
    } catch(e){ alert((e&&e.message)||'Errore'); }
}
async function delRole(id){ try { await api.ismsDeleteRole(id); loadRoles(); } catch(e){} }

// ── SoA (cl.6.1.3) ──
async function loadSoa(){
    if (ISMS.soaLoaded) return;
    el('soa-groups').innerHTML = '<p class="text-muted">'+(lang()==='en'?'Loading…':'Caricamento…')+'</p>';
    try {
        const res = await api.ismsGetSoa();
        renderSoa(res);
        ISMS.soaLoaded = true;
        markDone();
    } catch(e){
        el('soa-groups').innerHTML = '<p class="text-muted">'+esc((e&&e.message)||'')+'</p>';
    }
}
async function deriveSoa(){
    try { await api.ismsDeriveSoa(); ISMS.soaLoaded=false; await loadSoa(); }
    catch(e){ alert((e&&e.message)||'Errore'); }
}
function renderSoa(res){
    showSoaStats(res.stats);
    let html='';
    (res.groups||[]).forEach(function(g, gi){
        // raggruppa per tema
        const byTheme = {};
        (g.controls||[]).forEach(function(c){ (byTheme[c.theme]=byTheme[c.theme]||[]).push(c); });
        let inner='';
        Object.keys(byTheme).forEach(function(th){
            inner += '<div class="soa-theme">'+esc(THEME_LABELS[th]?THEME_LABELS[th][lang()]:th)+'</div>';
            byTheme[th].forEach(function(c){ inner += renderCtrl(c); });
        });
        html += '<div class="soa-std'+(gi===0?' open':'')+'"><div class="soa-std-head" onclick="this.parentNode.classList.toggle(\'open\')">'+
            '<strong>'+esc(g.label)+'</strong><span class="text-muted">'+(g.controls||[]).length+' '+(lang()==='en'?'controls':'controlli')+'</span></div>'+
            '<div class="soa-std-body">'+inner+'</div></div>';
    });
    el('soa-groups').innerHTML = html || '<p class="text-muted">'+(lang()==='en'?'No controls.':'Nessun controllo.')+'</p>';
}
function renderCtrl(c){
    const title = lang()==='en' ? (c.title_en||c.title_it) : (c.title_it||c.title_en);
    const derived = (+c.derived_from_nis2) ? '<span class="soa-derived" title="'+esc(c.source_ref||'')+'">'+(lang()==='en'?'from NIS2':'da NIS2')+'</span>' : '';
    const applicable = (+c.applicable)===1;
    const statuses = [
        ['not_started', lang()==='en'?'Not started':'Da iniziare'],
        ['in_progress', lang()==='en'?'In progress':'In corso'],
        ['implemented', lang()==='en'?'Implemented':'Attuato'],
        ['verified', lang()==='en'?'Verified':'Verificato']
    ];
    let opts='';
    statuses.forEach(function(s){
        const sel = c.implementation_status===s[0] ? ('sel-'+s[0]) : '';
        opts += '<button type="button" class="soa-opt '+sel+'" onclick="setSoaStatus(this,\''+esc(c.control_code)+'\',\''+s[0]+'\')">'+s[1]+'</button>';
    });
    return '<div class="soa-ctrl" data-code="'+esc(c.control_code)+'">'+
        '<div class="soa-ctrl-head"><div><span class="soa-code">'+esc(c.control_code)+'</span>'+esc(title)+' '+derived+'</div>'+
        '<label style="font-size:.82rem; white-space:nowrap;"><input type="checkbox" '+(applicable?'checked':'')+' onchange="setSoaApplicable(\''+esc(c.control_code)+'\',this.checked)"> '+(lang()==='en'?'Applicable':'Applicabile')+'</label></div>'+
        '<div class="soa-opts" style="'+(applicable?'':'opacity:.4;pointer-events:none;')+'">'+opts+'</div>'+
        '<textarea class="soa-justif" placeholder="'+(lang()==='en'?'Justification (inclusion/exclusion)':'Motivazione (inclusione/esclusione)')+'" onchange="setSoaJustif(\''+esc(c.control_code)+'\',this.value,'+applicable+')">'+esc(applicable?(c.justification_inclusion||''):(c.justification_exclusion||''))+'</textarea>'+
        '</div>';
}
function setSoaStatus(btn, code, status){
    const wrap = btn.parentNode;
    Array.prototype.forEach.call(wrap.querySelectorAll('.soa-opt'), function(b){ b.className='soa-opt'; });
    btn.className='soa-opt sel-'+status;
    const pct = {not_started:0,in_progress:50,implemented:100,verified:100}[status];
    queueSoaSave(code, { control_code:code, implementation_status:status, implementation_pct:pct });
}
function setSoaApplicable(code, applicable){
    queueSoaSave(code, { control_code:code, applicable:applicable });
    ISMS.soaLoaded=false; setTimeout(loadSoa, 400);
}
function setSoaJustif(code, val, applicable){
    queueSoaSave(code, applicable ? { control_code:code, justification_inclusion:val } : { control_code:code, justification_exclusion:val });
}
function queueSoaSave(code, payload){
    hint('isms-savehint', lang()==='en'?'Saving…':'Salvataggio…');
    if (soaSaveTimer[code]) clearTimeout(soaSaveTimer[code]);
    soaSaveTimer[code] = setTimeout(async function(){
        try { const r = await api.ismsUpdateSoa(payload); showSoaStats(r.stats); hint('isms-savehint', lang()==='en'?'Saved':'Salvato'); }
        catch(e){ hint('isms-savehint', lang()==='en'?'Save pending':'Salvataggio in sospeso'); }
    }, 600);
}
function showSoaStats(s){
    if(!s){ return; }
    const e = el('soa-stats');
    if(e) e.textContent = (lang()==='en'?'Applicable: ':'Applicabili: ')+s.applicable+' · '+(lang()==='en'?'avg impl.: ':'impl. media: ')+s.avg_implementation_pct+'%';
}

// ── Documenti (cl.7-8) ──
async function loadDocs(){
    try {
        const res = await api.ismsDocuments();
        let html='';
        (res.documents||[]).forEach(function(d){
            const ai = (+d.ai_generated)?'<span class="soa-derived">AI</span>':'';
            html += '<div class="ck-item"><div><strong>'+esc(d.title)+'</strong> '+ai+' <span class="text-muted" style="font-size:.8rem;">('+esc(d.doc_type)+')</span></div>'+
                '<span class="badge badge-'+(d.status==='approved'?'success':'warning')+'">'+esc(d.status)+'</span></div>';
        });
        el('docs-list').innerHTML = html || '<p class="text-muted">'+(lang()==='en'?'No documents yet.':'Nessun documento.')+'</p>';
    } catch(e){ el('docs-list').innerHTML='<p class="text-muted">'+esc((e&&e.message)||'')+'</p>'; }
}
async function aiGenDoc(){
    const btn = el('btn-aigen'); btn.disabled=true;
    hint('aigen-hint', lang()==='en'?'Generating draft…':'Generazione bozza in corso…');
    try {
        await api.ismsAiGenerateDocument({ doc_type: el('d-type').value });
        hint('aigen-hint', lang()==='en'?'Draft created (review required).':'Bozza creata (revisione obbligatoria).');
        loadDocs(); markDone();
    } catch(e){ hint('aigen-hint',''); alert((e&&e.message)||(lang()==='en'?'AI unavailable':'AI non disponibile')); }
    finally { btn.disabled=false; }
}

// ── Readiness (cl.9-10) ──
async function loadReadiness(){
    try {
        const res = await api.ismsReadiness();
        el('readiness-pct').textContent = (res.overall_pct||0)+'%';
        let html='';
        (res.checklist||[]).forEach(function(c){
            html += '<div class="ck-item"><span><span class="soa-code">'+esc(c.clause)+'</span>'+esc(c.label)+'</span>'+
                '<span class="'+(c.done?'ck-yes':'ck-no')+'">'+(c.done?'✓':'—')+'</span></div>';
        });
        el('readiness-checklist').innerHTML = html;
    } catch(e){ el('readiness-checklist').innerHTML='<p class="text-muted">'+esc((e&&e.message)||'')+'</p>'; }
}

function markDone(){
    // marca gli step "completati" in base allo stato del modello (best-effort).
    const m = ISMS.model;
    const done = [ m&&!!m.scope_statement, false, m&&!!m.risk_methodology, ISMS.soaLoaded, false, false ];
    done.forEach(function(d,i){ const s=el('step-'+i); if(s) s.classList.toggle('done', !!d); });
}

async function ismsExportView(){
    try {
        const data = await api.ismsExport();
        const w = window.open('', '_blank');
        if(!w){ return; }
        const m = data.model||{};
        let soa='';
        (data.soa||[]).forEach(function(c){
            soa += '<tr><td>'+esc(c.control_code)+'</td><td>'+esc(c.title_it||'')+'</td><td>'+((+c.applicable)?'Sì':'No')+'</td><td>'+esc(c.implementation_status||'')+'</td><td>'+(c.implementation_pct||0)+'%</td></tr>';
        });
        w.document.write('<html><head><meta charset="utf-8"><title>SGSI - '+esc((data.organization&&data.organization.name)||'')+'</title>'+
            '<style>body{font-family:Arial,sans-serif;padding:30px;color:#111} h1,h2{color:#1e40af} table{width:100%;border-collapse:collapse;font-size:12px} td,th{border:1px solid #ccc;padding:5px;text-align:left} .disc{background:#fffbeb;border:1px solid #fde68a;padding:10px;font-size:12px;margin:16px 0}</style></head><body>'+
            '<h1>Modello Organizzativo SGSI (ISO/IEC 27001:2022)</h1>'+
            '<p><strong>'+esc((data.organization&&data.organization.name)||'')+'</strong> — generato il '+esc(data.generated_at||'')+'</p>'+
            '<div class="disc">'+esc(data.disclaimer||'')+'</div>'+
            '<h2>Ambito</h2><p>'+esc(m.scope_statement||'—')+'</p>'+
            '<h2>Metodologia di risk assessment</h2><p>'+esc(m.risk_methodology||'—')+'</p>'+
            '<h2>Statement of Applicability</h2><table><tr><th>Controllo</th><th>Titolo</th><th>Applicabile</th><th>Stato</th><th>%</th></tr>'+soa+'</table>'+
            '</body></html>');
        w.document.close();
    } catch(e){ alert((e&&e.message)||(lang()==='en'?'Start the SGSI first.':'Avvia prima il SGSI.')); }
}