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null\n }));\n return state.chats;\n }\n return await loadChats(state);\n } catch (_) {\n state.chats = [];\n return [];\n }\n}\n\n/**\n * Legacy: Load chats (for backward compatibility)\n */\nexport async function loadChats(state: AppState): Promise {\n try {\n const rows = await state.db!.sessions.orderBy('createdAt').reverse().toArray();\n const newChats = rows.map((s: Session) => ({\n id: s.id!,\n title: s.title,\n slug: s.slug || null,\n createdAt: s.createdAt,\n folderId: s.folderId ?? null\n }));\n // Force Alpine.js reactivity by creating a new array reference\n state.chats = [...newChats];\n console.log('📋 loadChats: Loaded', state.chats.length, 'chats');\n } catch (err) {\n console.error('📋 loadChats: Error loading chats:', err);\n state.chats = [];\n }\n}\n\n/**\n * Load a single session and populate state\n */\nexport async function loadSession(state: AppState, id: number): Promise {\n try {\n console.log('📖 loadSession: Loading session', id);\n if (!state.db || !state.db.sessions) {\n await selectChat(state, id);\n return;\n }\n \n const session: Session = await state.db.sessions.get(id);\n if (!session) {\n console.warn('📖 loadSession: Session not found', id);\n state.messages = [];\n return;\n }\n \n console.log('📖 loadSession: Session found', session);\n state.currentChatId = id;\n state.activeSearchId = id;\n \n const tree = session.tree || { messages: [], branches: [], activeBranchId: null, branchingEnabled: false };\n console.log('📖 loadSession: Tree has', tree.messages?.length || 0, 'messages,', tree.branches?.length || 0, 'branches');\n console.log('📖 loadSession: activeBranchId =', tree.activeBranchId, 'branchingEnabled =', tree.branchingEnabled);\n \n const path = buildMessagePath(session, tree.activeBranchId != null ? tree.activeBranchId : null);\n console.log('📖 loadSession: Built path with', path?.length || 0, 'messages');\n console.log('📖 loadSession: Path message IDs:', path?.map(m => m.id) || []);\n \n state.messages = (path || []).map(messageToUIMessage);\n console.log('📖 loadSession: Set state.messages to', state.messages.length, 'messages');\n \n // Populate messageReasoningMap for UI\n try {\n if (!state.messageReasoningMap) state.messageReasoningMap = {};\n if (!state.expandedReasoningMap) state.expandedReasoningMap = {};\n (path || []).forEach(m => {\n if (m.id != null && m.reasoning) {\n state.messageReasoningMap![m.id] = m.reasoning;\n console.log('📖 loadSession: Loaded reasoning for message', m.id, '- length:', m.reasoning.length);\n }\n });\n } catch (_) {\n /* ignore */\n }\n \n // Expose session tree/branch for UI\n state.sessionTree = tree;\n state.currentBranchId = tree.activeBranchId || null;\n \n // Apply settings snapshot\n if (session.settings) {\n const s = session.settings;\n if (s.selectedModel != null) state.selectedModel = s.selectedModel;\n if (s.customChatBaseUrl != null) state.customChatBaseUrl = s.customChatBaseUrl;\n if (s.temperature != null) state.temperature = Math.max(0, Math.min(2, Number(s.temperature)));\n if (s.maxTokens != null) state.maxTokens = Math.max(1, Math.floor(Number(s.maxTokens)));\n if (s.reasoningEffort) state.reasoningEffort = s.reasoningEffort;\n if (s.streamEnabled != null) state.streamEnabled = !!s.streamEnabled;\n if (s.jsonMode != null) state.jsonMode = !!s.jsonMode;\n if (s.useBrowserSearch != null) state.useBrowserSearch = !!s.useBrowserSearch;\n if (s.useCodeInterpreter != null) state.useCodeInterpreter = !!s.useCodeInterpreter;\n }\n \n state.chatPromptText = session.systemPrompt || '';\n state.chatPromptId = session.systemPromptId ? String(session.systemPromptId) : null;\n } catch (_) {\n state.messages = [];\n }\n}\n\n/**\n * Save session with updated messages and tree\n * CRITICAL: This is where reasoning data must be persisted!\n */\nexport async function saveSession(state: AppState): Promise {\n try {\n if (!state || !state.db || !state.db.sessions || !state.currentChatId) return;\n \n const id = state.currentChatId;\n console.log('💾 saveSession called for session', id, '- processing', (state.messages || []).length, 'messages');\n \n let session: Session | null = null;\n try {\n session = await state.db.sessions.get(id);\n } catch (err) {\n console.warn('saveSession: failed to get session', id, err);\n return;\n }\n \n if (!session) return;\n \n const tree = session.tree || { messages: [], branches: [], activeBranchId: null, branchingEnabled: false };\n const existing = Array.isArray(tree.messages) ? tree.messages : [];\n \n // Safety check: prevent saving truncated message arrays (but allow appending new messages)\n // Only skip if messages array is significantly shorter AND not just extending the current path\n if (tree.branchingEnabled && tree.activeBranchId != null && existing.length > 0 && state.messages!.length > 0) {\n const currentPath = buildMessagePath(session, tree.activeBranchId);\n // Check if this looks like a truncation (missing messages from the middle)\n // Allow if: extending (>=), or just started new conversation (only 1-2 messages)\n if (state.messages!.length < currentPath.length - 1 && state.messages!.length > 2) {\n // Additional check: verify the first messages match to ensure it's not just a new conversation\n const firstStateMsg = state.messages![0];\n const firstPathMsg = currentPath[0];\n if (firstStateMsg?.id && firstPathMsg?.id && firstStateMsg.id === firstPathMsg.id) {\n console.warn('💾 saveSession: SKIPPING - state.messages', state.messages!.length, 'is shorter than current branch path', currentPath.length, '- possible stale load');\n return;\n }\n }\n }\n \n const byId = new Map(existing.map(m => [m.id, m]));\n let maxId = existing.reduce((acc, m) => (Number.isFinite(Number(m.id)) ? Math.max(acc, Number(m.id)) : acc), 0);\n \n console.log('💾 saveSession: existing messages:', existing.length, 'maxId:', maxId);\n console.log('💾 saveSession: state.messages reasoning:', state.messages!.map((m, i) => ({\n idx: i,\n id: m.id,\n hasReasoning: !!m.reasoning,\n reasoningLength: m.reasoning?.length || 0\n })));\n \n const ensureId = (m: UIMessage, fallbackIdx: number): number => {\n if (m.id != null && Number.isFinite(Number(m.id))) {\n console.log('💾 ensureId: message', fallbackIdx, 'already has id', m.id);\n return Number(m.id);\n }\n maxId = maxId + 1;\n console.log('💾 ensureId: assigned new id', maxId, 'to message', fallbackIdx, '(role:', m.role, ')');\n return maxId;\n };\n \n const output = existing.slice();\n const indexById = new Map(output.map((m, i) => [m.id, i]));\n \n // Build current path once to avoid multiple calls\n const currentPathIds = new Set();\n if (tree.branchingEnabled && tree.activeBranchId != null) {\n try {\n const currentPath = buildMessagePath(session, tree.activeBranchId);\n currentPath.forEach(msg => currentPathIds.add(msg.id));\n } catch (_) {\n /* ignore */\n }\n }\n \n let prevId: number | null = null;\n const idUpdates: Array<{ idx: number; newId: number }> = [];\n const assignedIds: number[] = [];\n \n (state.messages || []).forEach((m, idx) => {\n const mid = ensureId(m, idx);\n const prevDepth = idx === 0 ? 0 : idx;\n const existingRow = byId.get(mid);\n const newParentId = idx === 0 ? null : (assignedIds[idx - 1] != null ? assignedIds[idx - 1] : (state.messages![idx - 1] && state.messages![idx - 1].id != null ? state.messages![idx - 1].id! : prevId));\n \n // Check if this message is on the current branch's path\n const isOnCurrentPath = currentPathIds.has(mid);\n \n // If message exists but is NOT on current path, it's from another branch - create new message\n const shouldCreateNew = existingRow && tree.branchingEnabled && !isOnCurrentPath;\n if (shouldCreateNew) {\n console.log('💾 Message', mid, 'exists but not on current branch path - creating new message with parent', newParentId);\n maxId = maxId + 1;\n const newMid = maxId;\n assignedIds[idx] = newMid;\n idUpdates.push({ idx, newId: newMid });\n \n const nextRow = {\n id: newMid,\n parentId: newParentId ?? null,\n createdAt: m.createdAt || Date.now(),\n role: m.role || 'assistant',\n content: String(m.content || ''),\n reasoning: m.reasoning != null ? String(m.reasoning) : undefined,\n model: m.model != null ? m.model : undefined,\n promptLabel: (Object.prototype.hasOwnProperty.call(m, 'promptLabel') ? m.promptLabel : undefined) as string | null | undefined,\n depth: prevDepth\n };\n \n try {\n validateNoCycles(session, nextRow);\n } catch (_) {\n /* leave as-is if validation fails */\n }\n \n indexById.set(newMid, output.length);\n output.push(nextRow);\n prevId = newMid;\n return;\n }\n \n // Track the ID for this message (used for next message's parent)\n assignedIds[idx] = mid;\n \n const nextRow = {\n id: mid,\n // Preserve existing parentId if message already exists to avoid breaking other branches\n parentId: existingRow && Object.prototype.hasOwnProperty.call(existingRow, 'parentId') ? existingRow.parentId : (newParentId ?? null),\n createdAt: m.createdAt || existingRow?.createdAt || Date.now(),\n role: m.role || existingRow?.role || 'assistant',\n content: String(m.content || ''),\n reasoning: m.reasoning != null ? String(m.reasoning) : (existingRow?.reasoning || undefined),\n model: m.model != null ? m.model : (existingRow?.model ?? undefined),\n promptLabel: (Object.prototype.hasOwnProperty.call(m, 'promptLabel') ? m.promptLabel : (existingRow?.promptLabel ?? undefined)) as string | null | undefined,\n depth: Number.isFinite(Number(existingRow?.depth)) ? existingRow.depth! : prevDepth\n };\n \n try {\n validateNoCycles(session, nextRow);\n } catch (_) {\n /* leave as-is if validation fails */\n }\n \n if (existingRow) {\n const i = indexById.get(mid);\n if (i != null) {\n output[i] = nextRow;\n }\n } else {\n indexById.set(mid, output.length);\n output.push(nextRow);\n }\n \n prevId = mid;\n });\n \n tree.messages = output;\n console.log('💾 saveSession: Final tree messages with reasoning:', output.map(m => ({\n id: m.id,\n role: m.role,\n hasReasoning: !!m.reasoning,\n reasoningLength: m.reasoning?.length || 0\n })));\n \n // Update the active branch's leafMessageId to the last message in the current path\n if (tree.branchingEnabled && tree.activeBranchId != null && prevId != null) {\n const activeBranch = (tree.branches || []).find(b => b.id === tree.activeBranchId);\n if (activeBranch) {\n console.log('💾 saveSession: Updating branch', tree.activeBranchId, 'leafMessageId from', activeBranch.leafMessageId, 'to', prevId);\n activeBranch.leafMessageId = prevId;\n activeBranch.updatedAt = Date.now();\n }\n }\n \n session.tree = tree;\n session.updatedAt = Date.now();\n \n try {\n await state.db.sessions.put(session);\n } catch (err) {\n console.warn('saveSession: failed to put session', id, err);\n return;\n }\n \n // Apply ID updates to state.messages AFTER the save to avoid triggering reactivity during save\n if (idUpdates.length > 0) {\n try {\n idUpdates.forEach(({ idx, newId }) => {\n if (state.messages![idx]) {\n state.messages![idx].id = newId;\n }\n });\n } catch (_) {\n /* ignore */\n }\n }\n \n try {\n state.sessionTree = session.tree;\n } catch (_) {\n /* ignore */\n }\n } catch (err) {\n console.warn('saveSession: unexpected error', err);\n }\n}\n\n/**\n * Create a new chat/session\n */\nexport async function createNewChat(state: AppState): Promise {\n const input = (state.chatInput || '').trim();\n console.log('📝 createNewChat: chatInput =', input);\n \n // If no content, just clear the current chat - a real one will be created when they send a message\n if (!input) {\n console.log('📝 createNewChat: No input, clearing to prepare for new chat');\n state.currentChatId = null;\n state.activeSearchId = null;\n state.messages = [];\n return;\n }\n \n const base = input;\n const title = base.substring(0, 60);\n const slug = slugifyTitle(title);\n const now = Date.now();\n \n // Prefer sessions (v11+)\n let id: number | null = null;\n try {\n if (state.db && state.db.sessions) {\n console.log('📝 createNewChat: Creating new session with title:', title);\n id = await state.db.sessions.add({\n title,\n slug,\n createdAt: now,\n updatedAt: now,\n folderId: null,\n tree: createDefaultSessionTree(),\n });\n console.log('📝 createNewChat: Created session with ID:', id);\n }\n } catch (err) {\n console.error('📝 createNewChat: Error creating session:', err);\n }\n \n if (!id) {\n console.log('📝 createNewChat: Falling back to chats table');\n id = await state.db!.chats.add({ title, slug, createdAt: now, folderId: null });\n }\n \n await loadChats(state);\n await selectChat(state, id);\n console.log('📝 createNewChat: Finished, currentChatId =', state.currentChatId);\n}\n\n/**\n * Select and load a chat (with legacy support)\n */\nexport async function selectChat(state: AppState, id: number): Promise {\n if (id === state.ephemeralChatId) {\n state.currentChatId = null;\n state.activeSearchId = state.ephemeralChatId;\n state.messages = [];\n state.chatPromptId = null;\n state.chatPromptText = '';\n \n // Reset to default/global settings for ephemeral chat\n try {\n const storedModel = localStorage.getItem('groq_model');\n if (storedModel && typeof storedModel === 'string') {\n state.selectedModel = storedModel;\n } else {\n state.selectedModel = 'openai/gpt-oss-120b';\n }\n const storedBase = localStorage.getItem('chat_base_url');\n state.customChatBaseUrl = (storedBase && typeof storedBase === 'string') ? storedBase : '';\n const storedUse = localStorage.getItem('use_browser_search');\n if (storedUse === '0') state.useBrowserSearch = false;\n else if (storedUse === '1') state.useBrowserSearch = true;\n else state.useBrowserSearch = true;\n const storedCI = localStorage.getItem('use_code_interpreter');\n if (storedCI === '1') state.useCodeInterpreter = true;\n else if (storedCI === '0') state.useCodeInterpreter = false;\n else state.useCodeInterpreter = false;\n const t = localStorage.getItem('temperature');\n if (t != null && t !== '' && !Number.isNaN(Number(t))) state.temperature = Math.max(0, Math.min(2, Number(t)));\n else state.temperature = 1;\n const mt = localStorage.getItem('max_tokens');\n if (mt != null && mt !== '' && !Number.isNaN(Number(mt))) state.maxTokens = Math.max(1, Number(mt));\n else state.maxTokens = 8192;\n const re = localStorage.getItem('reasoning_effort');\n if (re === 'low' || re === 'medium' || re === 'high') state.reasoningEffort = re;\n else state.reasoningEffort = 'medium';\n const se = localStorage.getItem('stream_enabled');\n if (se === '0') state.streamEnabled = false;\n else if (se === '1') state.streamEnabled = true;\n else state.streamEnabled = true;\n const jm = localStorage.getItem('json_mode');\n if (jm === '1') state.jsonMode = true;\n else if (jm === '0') state.jsonMode = false;\n else state.jsonMode = false;\n } catch (_) {\n /* ignore */\n }\n \n // Clear preset linking status for ephemeral chat\n if (state.updatePresetLinkingStatus) {\n try {\n state.chatIsLinkedToPreset = false;\n state.chatHasCustomSettingsStored = false;\n } catch (_) {\n /* ignore */\n }\n }\n \n state.sidebarOpen = false;\n state.$nextTick && state.$nextTick(() => state.scrollToBottom && state.scrollToBottom());\n return;\n }\n \n state.currentChatId = id;\n state.activeSearchId = id;\n \n try {\n const session: Session = await state.db!.sessions.get(id);\n if (session) {\n const tree = session.tree || { messages: [] };\n state.messages = (tree.messages || []).map(messageToUIMessage);\n \n // Apply settings and prompt\n try {\n const s = session.settings || null;\n if (s) {\n if (s.selectedModel != null) state.selectedModel = s.selectedModel;\n if (s.customChatBaseUrl != null) state.customChatBaseUrl = s.customChatBaseUrl;\n if (s.temperature != null) state.temperature = Math.max(0, Math.min(2, Number(s.temperature)));\n if (s.maxTokens != null) state.maxTokens = Math.max(1, Math.floor(Number(s.maxTokens)));\n if (s.reasoningEffort) state.reasoningEffort = s.reasoningEffort;\n if (s.streamEnabled != null) state.streamEnabled = !!s.streamEnabled;\n if (s.jsonMode != null) state.jsonMode = !!s.jsonMode;\n if (s.useBrowserSearch != null) state.useBrowserSearch = !!s.useBrowserSearch;\n if (s.useCodeInterpreter != null) state.useCodeInterpreter = !!s.useCodeInterpreter;\n }\n state.chatPromptText = session.systemPrompt || '';\n state.chatPromptId = session.systemPromptId ? String(session.systemPromptId) : null;\n } catch (_) {\n /* ignore */\n }\n } else {\n state.messages = [];\n }\n } catch (_) {\n state.messages = [];\n }\n \n state.sidebarOpen = false;\n state.$nextTick && state.$nextTick(() => state.scrollToBottom && state.scrollToBottom());\n try {\n typeof state.updateDocumentTitle === 'function' && state.updateDocumentTitle();\n } catch (_) {\n /* ignore */\n }\n}\n\n/**\n * Delete a chat/session\n */\nexport async function deleteChat(state: AppState, id: number): Promise {\n try {\n if (!state.db) return;\n \n const chatId = typeof id === 'string' ? Number(id) : id;\n \n // Prefer deleting a session if exists\n let deleted = false;\n try {\n if (state.db.sessions) {\n await state.db.sessions.delete(chatId);\n deleted = true;\n }\n } catch (_) {\n /* ignore */\n }\n \n if (!deleted) {\n try {\n await state.db.messages.where('chatId').equals(chatId).delete();\n } catch (_) {\n try {\n await state.db.messages.filter((m: any) => m.chatId === chatId).delete();\n } catch (_) {\n /* ignore */\n }\n }\n try {\n await state.db.chats.delete(chatId);\n } catch (_) {\n /* ignore */\n }\n }\n \n await loadChats(state);\n \n if (state.currentChatId === chatId) {\n const next = state.chats![0]?.id;\n if (next) {\n await selectChat(state, next);\n } else {\n await createNewChat(state);\n }\n }\n } catch (_) {\n /* ignore */\n }\n}\n\n/**\n * Duplicate a session\n */\nexport async function duplicateChat(state: AppState, id: number): Promise {\n try {\n if (!state || !state.db) return;\n \n const chatId = typeof id === 'string' ? Number(id) : id;\n if (!Number.isFinite(chatId)) return;\n \n // Prefer sessions\n if (state.db.sessions) {\n const session: Session = await state.db.sessions.get(chatId);\n if (session) {\n const title = String(session.title || 'New chat') + ' (copy)';\n const slug = slugifyTitle(title);\n const now = Date.now();\n \n const copy: Partial = {\n ...session,\n id: undefined,\n title,\n slug,\n createdAt: now,\n updatedAt: now,\n };\n \n const newId = await state.db.sessions.add(copy);\n await loadChats(state);\n return;\n }\n }\n \n // Fallback to chats/messages copy\n const orig = await state.db.chats.get(chatId);\n if (!orig) return;\n \n const title = String(orig.title || 'New chat') + ' (copy)';\n const createdAt = Date.now();\n const folderId = orig.folderId ?? null;\n const slug = (orig.slug && String(orig.slug)) || slugifyTitle(title);\n \n const newChatId = await state.db.chats.add({ title, slug, createdAt, folderId });\n \n try {\n const msgs = await state.db.messages.where('chatId').equals(chatId).sortBy('createdAt');\n if (Array.isArray(msgs) && msgs.length) {\n const rows = msgs.map((m: any) => ({\n chatId: newChatId,\n createdAt: m.createdAt,\n role: m.role,\n content: m.content,\n reasoning: m.reasoning || '',\n model: m.model || null,\n promptLabel: m.promptLabel || null\n }));\n \n try {\n await state.db.messages.bulkAdd(rows);\n } catch (_) {\n for (const row of rows) {\n try {\n await state.db.messages.add(row);\n } catch (_) {\n /* ignore single add */\n }\n }\n }\n }\n } catch (_) {\n /* ignore */\n }\n \n await loadChats(state);\n } catch (_) {\n /* ignore */\n }\n}\n\n/**\n * Start editing a chat title\n */\nexport function startEditingChat(state: AppState, id: number, currentTitle: string): void {\n state.editingChatId = id;\n state.editingChatTitle = currentTitle || '';\n try {\n setTimeout(() => {\n const el = document.querySelector('input[data-chat-id=\"' + id + '\"]') as HTMLInputElement;\n if (el) {\n el.focus();\n el.select();\n }\n }, 50);\n } catch (_) {}\n}\n\n/**\n * Commit chat title edit\n */\nexport async function commitEditingChat(state: AppState): Promise {\n const rawId = state.editingChatId;\n const id = typeof rawId === 'string' ? Number(rawId) : rawId;\n if (!id) return cancelEditingChat(state);\n \n const title = (state.editingChatTitle || '').trim() || 'New chat';\n try {\n if (state.db) {\n const prev: Session = await state.db.sessions.get(id);\n const slug = prev?.slug || slugifyTitle(title);\n const next = { ...prev, id, title, slug, updatedAt: Date.now() };\n await state.db.sessions.put(next);\n }\n await loadChats(state);\n state.activeSearchId = id;\n } catch (_) {\n /* no-op */\n }\n \n state.editingChatId = null;\n state.editingChatTitle = '';\n \n try {\n typeof state.updateDocumentTitle === 'function' && state.updateDocumentTitle();\n } catch (_) {\n /* ignore */\n }\n}\n\n/**\n * Cancel chat title edit\n */\nexport function cancelEditingChat(state: AppState): void {\n state.editingChatId = null;\n state.editingChatTitle = '';\n}\n\n/**\n * Move chat to a folder\n */\nexport async function moveChatToFolder(state: AppState, chatId: number, folderId: number | null): Promise {\n try {\n if (!chatId) return;\n const prev: Session = await state.db!.sessions.get(chatId);\n if (!prev) return;\n const next = { ...prev, id: chatId, folderId: folderId ?? null };\n await state.db!.sessions.put(next);\n await loadChats(state);\n } catch (_) {\n /* ignore */\n }\n}\n\n/**\n * Get chats not in any folder\n */\nexport function baseChats(state: AppState): any[] {\n try {\n // Return only actual persisted chats (no fake ephemeral entry)\n const list = (state.chats || []).filter(c => !c.folderId);\n return list;\n } catch (_) {\n return state.chats || [];\n }\n}\n\n/**\n * Get chats in a specific folder\n */\nexport function chatsInFolder(state: AppState, folderId: number): any[] {\n try {\n return (state.chats || []).filter(c => c.folderId === folderId);\n } catch (_) {\n return [];\n }\n}\n\n","deleted","label",[167,168,149],"frontend","core","permalink","https://www.val.town/x/yawnxyz/chatter/code/frontend/core/sessions.ts","extension","actionData","errors"]