// ==========================================
// Chat Switchboard – UI Settings & Teams
// ==========================================
// Extends UI with settings modal tabs, team management,
// providers, usage, model roles, and user preferences.

Object.assign(UI, {
    // ── Appearance Settings ─────────────────

    loadAppearanceSettings() {
        const prefs = JSON.parse(localStorage.getItem('cs-appearance') || '{}');
        const scale = prefs.scale || 100;
        const msgFont = prefs.msgFont || 14;

        const scaleEl = document.getElementById('settingsScale');
        const msgFontEl = document.getElementById('settingsMsgFont');
        if (scaleEl) { scaleEl.value = scale; document.getElementById('scaleValue').textContent = scale + '%'; }
        if (msgFontEl) { msgFontEl.value = msgFont; document.getElementById('msgFontValue').textContent = msgFont + 'px'; }
    },

    initAppearance() {
        // Load saved prefs on startup
        const prefs = JSON.parse(localStorage.getItem('cs-appearance') || '{}');
        UI.applyAppearance(prefs.scale || 100, prefs.msgFont || 14);

        // Live preview on slider change
        const scaleEl = document.getElementById('settingsScale');
        const msgFontEl = document.getElementById('settingsMsgFont');
        if (scaleEl) scaleEl.addEventListener('input', () => {
            const v = parseInt(scaleEl.value);
            document.getElementById('scaleValue').textContent = v + '%';
            UI.applyAppearance(v, parseInt(msgFontEl?.value || 14));
        });
        if (msgFontEl) msgFontEl.addEventListener('input', () => {
            const v = parseInt(msgFontEl.value);
            document.getElementById('msgFontValue').textContent = v + 'px';
            UI.applyAppearance(parseInt(scaleEl?.value || 100), v);
        });
    },

    applyAppearance(scale, msgFont) {
        const z = scale === 100 ? '' : scale / 100;
        // Zoom content areas + modals + panels (but NOT .app or banners)
        document.querySelectorAll('.sidebar, .chat-area, .modal-overlay, .side-panel, .admin-panel').forEach(el => el.style.zoom = z);
        const splash = document.getElementById('splashGate');
        if (splash) splash.style.zoom = z;
        document.documentElement.style.setProperty('--msg-font', msgFont + 'px');
        localStorage.setItem('cs-appearance', JSON.stringify({ scale, msgFont }));
        // Recheck tab overflow after layout settles with new zoom
        requestAnimationFrame(() => {
            document.querySelectorAll('.modal-overlay.active .modal-tabs').forEach(checkTabsOverflow);
        });
    },

    async checkUserProvidersAllowed() {
        const notice = document.getElementById('userProvidersDisabled');
        const addBtn = document.getElementById('providerShowAddBtn');
        const tabBtn = document.getElementById('settingsProvidersTabBtn');
        const usageTabBtn = document.getElementById('settingsUsageTabBtn');
        const rolesTabBtn = document.getElementById('settingsRolesTabBtn');
        const kbTabBtn = document.getElementById('settingsKBTabBtn');
        if (!notice) return;
        const allowed = App.policies?.allow_user_byok === 'true';
        if (!kbTabBtn) console.warn('[Settings] settingsKBTabBtn not found in DOM');
        notice.style.display = allowed ? 'none' : '';
        if (addBtn) addBtn.style.display = allowed ? '' : 'none';
        if (tabBtn) tabBtn.style.display = allowed ? '' : 'none';
        if (usageTabBtn) usageTabBtn.style.display = allowed ? '' : 'none';
        if (rolesTabBtn) rolesTabBtn.style.display = allowed ? '' : 'none';
        if (kbTabBtn) kbTabBtn.style.display = allowed ? '' : 'none';
    },

    checkUserPresetsAllowed() {
        const addBtn = document.getElementById('userAddPresetBtn');
        const addForm = document.getElementById('userAddPresetForm');
        const tabBtn = document.getElementById('settingsPersonasTabBtn');
        const allowed = App.policies?.allow_user_personas === 'true';
        if (addBtn) addBtn.style.display = allowed ? '' : 'none';
        if (addForm && !allowed) addForm.style.display = 'none';
        if (tabBtn) tabBtn.style.display = allowed ? '' : 'none';
    },

    async loadProfileIntoSettings() {
        try {
            const p = await API.getProfile();
            document.getElementById('profileDisplayName').value = p.display_name || '';
            document.getElementById('profileEmail').value = p.email || '';
            updateAvatarPreview(p.avatar || null);
        } catch (e) { /* optional */ }
    },

    async loadMyTeams() {
        const section = document.getElementById('settingsTeamsSection');
        const el = document.getElementById('settingsTeamsList');
        const menuBtn = document.getElementById('menuTeamAdmin');
        if (!section || !el) return;
        try {
            const resp = await API.listMyTeams();
            const teams = resp.data || [];
            UI._myTeams = teams;

            // Show/hide the Team Management flyout item for team admins
            const isTeamAdmin = teams.some(t => t.my_role === 'admin');
            if (menuBtn) menuBtn.style.display = isTeamAdmin ? '' : 'none';

            if (teams.length === 0) {
                section.style.display = 'none';
                return;
            }
            section.style.display = '';
            el.innerHTML = teams.map(t => `
                <div class="team-card"${t.my_role === 'admin' ? ` style="cursor:pointer" onclick="UI.openTeamManage('${t.id}', '${esc(t.name)}')"` : ''}>
                    <div class="team-card-info">
                        <strong>${esc(t.name)}</strong>
                        <span class="badge-${t.my_role === 'admin' ? 'admin' : 'user'}">${t.my_role}</span>
                        ${t.my_role === 'admin' ? '<span style="margin-left:auto;color:var(--text-3);font-size:12px">Manage →</span>' : ''}
                    </div>
                    ${t.description ? `<div class="text-muted" style="font-size:12px">${esc(t.description)}</div>` : ''}
                    <div class="text-muted" style="font-size:11px">${t.member_count} member${t.member_count !== 1 ? 's' : ''}</div>
                </div>
            `).join('');
        } catch (e) { section.style.display = 'none'; if (menuBtn) menuBtn.style.display = 'none'; }
    },

    _myTeams: [],
    _managingTeamId: null,

    loadTeamsTab() {
        // No longer used — picker is in team admin modal
    },

    async openTeamManage(teamId, teamName) {
        UI._managingTeamId = teamId;
        UI._teamAuditPage = 1;

        // If the modal isn't open yet (called from settings "Manage →"), open it
        if (!document.getElementById('teamAdminModal').classList.contains('active')) {
            openModal('teamAdminModal');
        }

        // Show tabbed content, hide picker
        const adminTeams = (UI._myTeams || []).filter(t => t.my_role === 'admin');
        const titleEl = document.getElementById('teamAdminTitle');
        if (adminTeams.length > 1) {
            titleEl.innerHTML = `<span class="team-admin-back" onclick="UI.showTeamPicker()" title="Back to teams">←</span> ${esc(teamName)}`;
        } else {
            titleEl.textContent = teamName;
        }
        document.getElementById('teamAdminPicker').style.display = 'none';
        document.getElementById('teamAdminContent').style.display = '';

        // Reset forms (null-safe — not all form containers may exist)
        ['settingsTeamAddMember', 'settingsTeamAddPreset', 'settingsTeamProviderForm'].forEach(id => {
            const el = document.getElementById(id);
            if (el) el.style.display = 'none';
        });
        const af = document.getElementById('teamAuditFilterAction');
        if (af) { af.innerHTML = '<option value="">All actions</option>'; }

        // Show Members tab first, load its data
        UI.switchTeamTab('members');
    },

    showTeamPicker() {
        document.getElementById('teamAdminTitle').textContent = 'Team Management';
        document.getElementById('teamAdminContent').style.display = 'none';
        document.getElementById('teamAdminPicker').style.display = '';
    },

    async loadTeamManageMembers(teamId) {
        const el = document.getElementById('settingsTeamMembers');
        el.innerHTML = '<div class="loading">Loading...</div>';
        try {
            const resp = await API.teamListMembers(teamId);
            const members = resp.data || [];
            el.innerHTML = members.map(m => `
                <div class="admin-user-row" style="padding:6px 0">
                    <div class="admin-user-info">
                        <strong style="font-size:13px">${esc(m.display_name || m.email)}</strong>
                        <span class="badge-${m.role === 'admin' ? 'admin' : 'user'}" style="font-size:10px">${m.role}</span>
                    </div>
                    <div class="admin-user-actions">
                        <select onchange="settingsUpdateTeamMember('${teamId}','${m.id}',this.value)" class="inline-select">
                            <option value="member" ${m.role === 'member' ? 'selected' : ''}>Member</option>
                            <option value="admin" ${m.role === 'admin' ? 'selected' : ''}>Admin</option>
                        </select>
                        <button class="btn-delete" onclick="settingsRemoveTeamMember('${teamId}','${m.id}','${esc(m.email)}')" title="Remove">✕</button>
                    </div>
                </div>
            `).join('') || '<div class="empty-hint">No members</div>';
        } catch (e) { el.innerHTML = `<div class="error-hint">${esc(e.message)}</div>`; }
    },

    async loadTeamManageProviders(teamId) {
        const el = document.getElementById('settingsTeamProviders');
        if (!el) return;
        const addBtn = document.getElementById('settingsTeamAddProviderBtn');
        const formEl = document.getElementById('settingsTeamProviderForm');

        // Initialize team provider form primitive (once)
        if (!UI._teamProvForm && formEl) {
            UI._teamProvForm = renderProviderForm(formEl, {
                prefix: 'teamProv',
                showPrivate: true,
                showDefaultModel: true,
                onSubmit: async (vals, isEdit) => {
                    const tid = UI._managingTeamId;
                    try {
                        if (isEdit) {
                            const updates = {};
                            if (vals.name) updates.name = vals.name;
                            if (vals.endpoint) updates.endpoint = vals.endpoint;
                            if (vals.api_key) updates.api_key = vals.api_key;
                            if (vals.model_default) updates.model_default = vals.model_default;
                            updates.is_private = vals.is_private || false;
                            await API.teamUpdateProvider(tid, vals._editId, updates);
                            UI.toast('Provider updated');
                        } else {
                            if (!vals.name) return UI.toast('Name required', 'error');
                            if (!vals.endpoint) return UI.toast('Endpoint required', 'error');
                            await API.teamCreateProvider(tid, {
                                name: vals.name, provider: vals.provider, endpoint: vals.endpoint,
                                api_key: vals.api_key, is_private: vals.is_private || false,
                            });
                            UI.toast('Provider added');
                        }
                        formEl.style.display = 'none';
                        UI._teamProvForm.setCreateMode();
                        UI._teamProvList.refresh();
                        await fetchModels();
                    } catch (e) { UI.toast(e.message, 'error'); }
                },
                onCancel: () => {
                    formEl.style.display = 'none';
                    UI._teamProvForm.setCreateMode();
                },
            });
        }

        // Initialize team provider list primitive (once)
        if (!UI._teamProvList) {
            UI._teamProvList = renderProviderList(el, {
                apiFetch: async () => {
                    const resp = await API.teamListProviders(UI._managingTeamId);
                    // Handle policy check
                    const allowed = resp.allow_team_providers !== false;
                    if (addBtn) addBtn.style.display = allowed ? '' : 'none';
                    if (!allowed && !(resp.providers || []).length) {
                        throw { message: 'Team provider management is disabled by your administrator', _empty: true };
                    }
                    return resp;
                },
                showPrivate: true,
                showActive: true,
                emptyMsg: 'No team providers — add one to give your team access to additional models',
                onEdit: (prov) => {
                    if (UI._teamProvForm) {
                        UI._teamProvForm.setEditMode(prov.id, prov);
                        formEl.style.display = '';
                    }
                },
                onDelete: async (prov) => {
                    if (!await showConfirm(`Delete team provider "${prov.name}"? This will remove all models from this provider for your team.`)) return;
                    try {
                        await API.teamDeleteProvider(UI._managingTeamId, prov.id);
                        UI.toast('Provider deleted');
                        UI._teamProvList.refresh();
                        await fetchModels();
                    } catch (e) { UI.toast(e.message, 'error'); }
                },
                onToggleActive: async (prov) => {
                    try {
                        await API.teamUpdateProvider(UI._managingTeamId, prov.id, { is_active: !prov.is_active });
                        UI.toast(prov.is_active ? 'Provider deactivated' : 'Provider activated');
                        UI._teamProvList.refresh();
                        await fetchModels();
                    } catch (e) { UI.toast(e.message, 'error'); }
                },
            });
        }

        await UI._teamProvList.refresh();
    },

    async loadTeamManagePresets(teamId) {
        const el = document.getElementById('settingsTeamPresets');
        el.innerHTML = '<div class="loading">Loading...</div>';
        try {
            const resp = await API.teamListPresets(teamId);
            const presets = resp.presets || [];
            el.innerHTML = presets.map(p => {
                const icon = p.icon || '';
                return `<div class="admin-preset-row" style="padding:6px 0">
                    <div class="preset-info">
                        <strong>${icon ? icon + ' ' : ''}${esc(p.name)}</strong>
                        <div class="preset-meta" style="font-size:11px">${esc(p.base_model_id)}</div>
                    </div>
                    <button class="btn-delete" onclick="settingsDeleteTeamPreset('${teamId}','${p.id}','${esc(p.name)}')" title="Delete">✕</button>
                </div>`;
            }).join('') || '<div class="empty-hint">No team presets — create one to give your team preconfigured models</div>';
        } catch (e) { el.innerHTML = `<div class="error-hint">${esc(e.message)}</div>`; }
    },

    async loadTeamManageGroups(teamId) {
        const el = document.getElementById('settingsTeamGroups');
        if (!el) return;
        el.innerHTML = '<div class="loading">Loading...</div>';
        try {
            const resp = await API.teamListGroups(teamId);
            const groups = resp.data || [];
            el.innerHTML = groups.map(g => `
                <div class="admin-user-row" style="padding:6px 0">
                    <div class="admin-user-info">
                        <div><strong>${esc(g.name)}</strong></div>
                        <div class="text-muted" style="font-size:11px">${esc(g.description || 'No description')} · ${g.member_count} member${g.member_count !== 1 ? 's' : ''}</div>
                    </div>
                </div>
            `).join('') || '<div class="empty-hint">No groups assigned to this team yet</div>';
        } catch (e) { el.innerHTML = `<div class="error-hint">${esc(e.message)}</div>`; }
    },

    async loadMyUsage() {
        const el = document.getElementById('myUsageTotals')?.parentElement;
        if (!el) return;
        if (!UI._myUsageDash) {
            UI._myUsageDash = renderUsageDashboard(el, {
                apiFetch: (p) => API.getMyUsage(p),
                periodElId: 'myUsagePeriod',
                groupByElId: 'myUsageGroupBy',
                compact: true,
            });
        }
        await UI._myUsageDash.refresh();
    },

    async loadTeamUsage() {
        const teamId = UI._managingTeamId;
        if (!teamId) return;
        const el = document.getElementById('settingsTeamUsageTotals')?.parentElement;
        if (!el) return;
        if (!UI._teamUsageDash) {
            UI._teamUsageDash = renderUsageDashboard(el, {
                apiFetch: (p) => API.teamGetUsage(teamId, p),
                periodElId: 'teamUsagePeriod',
                groupByElId: 'teamUsageGroupBy',
                compact: true,
                showUserColumn: true,
            });
        }
        await UI._teamUsageDash.refresh();
    },

    _teamAuditPage: 1,
    _teamAuditPerPage: 20,

    // ── User Model Roles (BYOK overrides) ──

    async loadUserRoles() {
        const el = document.getElementById('userRolesConfig');
        const notice = document.getElementById('userRolesDisabled');
        const tabBtn = document.getElementById('settingsRolesTabBtn');
        if (!el) return;

        // Only show if BYOK is enabled
        const byokAllowed = App.policies?.allow_user_byok === 'true';
        if (tabBtn) tabBtn.style.display = byokAllowed ? '' : 'none';
        if (!byokAllowed) return;

        // Check if user has personal providers
        try {
            const configs = await API.listConfigs();
            const configList = configs.configs || configs.data || [];
            const personalProviders = configList.filter(c => c.scope === 'personal');

            if (personalProviders.length === 0) {
                el.style.display = 'none';
                if (notice) notice.style.display = '';
                return;
            }
            el.style.display = '';
            if (notice) notice.style.display = 'none';
        } catch (e) {
            el.innerHTML = `<div class="error-hint">${esc(e.message)}</div>`;
            return;
        }

        if (_userRoleConfig) await _userRoleConfig.refresh();
    },

    async loadTeamAuditLog(page) {
        const teamId = UI._managingTeamId;
        if (!teamId) return;
        if (page) UI._teamAuditPage = page;

        const el = document.getElementById('settingsTeamAudit');
        if (!el) return;
        el.innerHTML = '<div class="loading">Loading...</div>';

        // Populate action filter on first load
        const actionSel = document.getElementById('teamAuditFilterAction');
        if (actionSel && actionSel.options.length <= 1) {
            try {
                const resp = await API.teamListAuditActions(teamId);
                (resp.actions || []).forEach(a => {
                    const opt = document.createElement('option');
                    opt.value = a;
                    opt.textContent = a;
                    actionSel.appendChild(opt);
                });
            } catch (e) { /* optional */ }
        }

        const params = {
            page: UI._teamAuditPage,
            per_page: UI._teamAuditPerPage,
            action: document.getElementById('teamAuditFilterAction')?.value || '',
        };

        try {
            const resp = await API.teamListAudit(teamId, params);
            const entries = resp.data || [];
            const total = resp.total || 0;
            const totalPages = Math.ceil(total / UI._teamAuditPerPage);

            if (entries.length === 0) {
                el.innerHTML = '<div class="empty-hint">No activity recorded for this team</div>';
            } else {
                el.innerHTML = entries.map(e => {
                    const ts = new Date(e.created_at);
                    const timeStr = ts.toLocaleDateString() + ' ' + ts.toLocaleTimeString([], {hour:'2-digit', minute:'2-digit'});
                    const actor = e.actor_name || 'system';
                    const meta = UI._formatAuditMeta(e.metadata);
                    return `<div class="audit-row">
                        <div class="audit-main">
                            <span class="audit-action">${esc(e.action)}</span>
                            <span class="audit-actor">${esc(actor)}</span>
                            <span class="audit-resource">${esc(e.resource_type)}${e.resource_id ? ':' + esc(e.resource_id).slice(0,8) : ''}</span>
                        </div>
                        <div class="audit-meta">
                            ${meta ? `<span class="audit-details">${meta}</span>` : ''}
                            <span class="audit-time">${timeStr}</span>
                        </div>
                    </div>`;
                }).join('');
            }

            // Pagination
            const pgEl = document.getElementById('teamAuditPagination');
            if (totalPages > 1) {
                pgEl.style.display = 'flex';
                document.getElementById('teamAuditPageInfo').textContent = `Page ${UI._teamAuditPage} of ${totalPages} (${total} entries)`;
                document.getElementById('teamAuditPrevBtn').disabled = UI._teamAuditPage <= 1;
                document.getElementById('teamAuditNextBtn').disabled = UI._teamAuditPage >= totalPages;
            } else {
                pgEl.style.display = 'none';
            }
        } catch (e) { el.innerHTML = `<div class="error-hint">${esc(e.message)}</div>`; }
    },

    async loadTeamPresetModelDropdown(teamId) {
        const sel = document.getElementById('teamPreset_model');
        if (!sel) return;
        sel.innerHTML = '<option value="">Loading models...</option>';
        try {
            const resp = await API.teamListAvailableModels(teamId);
            const models = resp.models || [];
            sel.innerHTML = '<option value="">Select base model...</option>';

            // Group by source for clarity
            const globalModels = models.filter(m => m.source !== 'team');
            const teamModels = models.filter(m => m.source === 'team');

            const addGroup = (label, items) => {
                if (!items.length) return;
                const group = document.createElement('optgroup');
                group.label = label;
                items.forEach(m => {
                    const opt = document.createElement('option');
                    opt.value = m.model_id || m.id;
                    const vis = m.visibility === 'team' ? ' [team-only]' : '';
                    opt.textContent = (m.model_id || m.id) + (m.provider_name ? ` (${m.provider_name})` : '') + vis;
                    group.appendChild(opt);
                });
                sel.appendChild(group);
            };

            addGroup('Global Models', globalModels);
            addGroup('Team Provider Models', teamModels);
        } catch (e) {
            // Fallback to App.models if team endpoint fails
            sel.innerHTML = '<option value="">Select base model...</option>';
            App.models.filter(m => !m.isPreset).forEach(m => {
                const opt = document.createElement('option');
                opt.value = m.baseModelId || m.id;
                opt.textContent = (m.name || m.id) + (m.provider ? ` (${m.provider})` : '');
                sel.appendChild(opt);
            });
        }
    },

    // ── Providers ────────────────────────────

    async loadProviderList() {
        if (_userProvList) { await _userProvList.refresh(); return; }
        // Fallback if primitives not yet initialized
        const el = document.getElementById('providerList');
        el.innerHTML = '<div class="loading">Loading...</div>';
    },

    showProviderForm() { document.getElementById('providerAddForm').style.display = ''; },
    hideProviderForm() {
        document.getElementById('providerAddForm').style.display = 'none';
        if (_userProvForm) _userProvForm.setCreateMode();
    },

    // ── User Model List ─────────────────────

    async loadUserModels() {
        const el = document.getElementById('userModelList');
        if (!el) return;
        el.innerHTML = '<div class="loading">Loading models...</div>';
        try {
            // Load preferences if not already loaded
            if (!App.hiddenModels) {
                try {
                    const prefData = await API.getModelPreferences();
                    App.hiddenModels = new Set(
                        (prefData.preferences || []).filter(p => p.hidden).map(p => p.model_id)
                    );
                } catch (e) {
                    if (!App.hiddenModels) App.hiddenModels = new Set();
                }
            }

            const data = await API.listEnabledModels();
            const models = (data.models || []).filter(m => !m.is_preset);
            if (!models.length) {
                el.innerHTML = '<div class="empty-hint">No models available</div>';
                return;
            }
            el.innerHTML = models.map(m => {
                const mid = m.model_id || m.id;
                const caps = m.capabilities || {};
                const badges = renderCapBadges(caps, { compact: true });
                const src = m.source === 'personal' ? '<span class="badge-user" style="font-size:10px">personal</span>'
                    : m.source === 'team' ? `<span class="badge-team" style="font-size:10px">👥 ${esc(m.team_name || 'team')}</span>` : '';
                const hidden = App.hiddenModels.has(mid);
                const toggleCls = hidden ? '' : 'enabled';
                const toggleLabel = hidden ? 'Hidden' : '✓ Visible';
                return `<div class="model-list-item ${hidden ? 'model-hidden' : ''}">
                    <span class="model-name">${esc(mid)}</span>
                    <span class="model-caps-inline">${badges}</span>
                    <span class="model-provider">${esc(m.provider_name || m.provider || '')}</span>
                    ${src}
                    <button class="admin-model-toggle ${toggleCls}" onclick="toggleUserModelVisibility('${esc(mid)}', ${hidden})" title="${hidden ? 'Show in selector' : 'Hide from selector'}">${toggleLabel}</button>
                </div>`;
            }).join('');
        } catch (e) { el.innerHTML = `<div class="error-hint">${esc(e.message)}</div>`; }
    },

    async loadUserPresets() {
        const el = document.getElementById('userPresetList');
        if (!el) return;
        try {
            const data = await API.listUserPresets();
            // Only show personal presets owned by user
            const presets = (data.presets || []).filter(p => p.scope === 'personal');
            if (!presets.length) {
                el.innerHTML = '<div class="empty-hint">No personal presets yet</div>';
                return;
            }
            el.innerHTML = presets.map(p => {
                const avatarEl = p.avatar ? `<img src="${p.avatar}" class="preset-row-avatar" alt="">` : '';
                return `<div class="admin-preset-row" style="padding:6px 0">
                    <div class="preset-info">
                        <strong>${avatarEl}${esc(p.name)}</strong>
                        <div class="preset-meta">${esc(p.base_model_id)} · ${esc(p.provider_name || 'auto')}</div>
                    </div>
                    <div class="preset-actions">
                        <button class="btn-delete" onclick="deleteUserPreset('${p.id}', '${esc(p.name)}')" title="Delete">✕</button>
                    </div>
                </div>`;
            }).join('');
        } catch (e) { el.innerHTML = `<div class="error-hint">${esc(e.message)}</div>`; }
    },

});