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<!doctype html> <html lang="en"> <head> <title>Code coverage report for ui/chat/services/BranchManager.ts</title> <meta charset="utf-8" /> <link rel="stylesheet" href="../../../prettify.css" /> <link rel="stylesheet" href="../../../base.css" /> <link rel="shortcut icon" type="image/x-icon" href="../../../favicon.png" /> <meta name="viewport" content="width=device-width, initial-scale=1" /> <style type='text/css'> .coverage-summary .sorter { background-image: url(../../../sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1><a href="../../../index.html">All files</a> / <a href="index.html">ui/chat/services</a> BranchManager.ts</h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 60.33% Statements 73/121 </div> <div class='fl pad1y space-right2'> 70.58% Branches 36/51 </div> <div class='fl pad1y space-right2'> 51.85% Functions 14/27 </div> <div class='fl pad1y space-right2'> 62.5% Lines 70/112 </div> </div> Press n or j to go to the next uncovered block, b, p or k for the previous block. <template id="filterTemplate"> <div class="quiet"> Filter: <input type="search" id="fileSearch"> </div> </template> </div> <div class='status-line medium'></div> <pre><table class="coverage"> <tr><td class="line-count quiet"><a name='L1'></a><a href='#L1'>1</a> <a name='L2'></a><a href='#L2'>2</a> <a name='L3'></a><a href='#L3'>3</a> <a name='L4'></a><a href='#L4'>4</a> <a name='L5'></a><a href='#L5'>5</a> <a name='L6'></a><a href='#L6'>6</a> <a name='L7'></a><a href='#L7'>7</a> <a name='L8'></a><a href='#L8'>8</a> <a name='L9'></a><a href='#L9'>9</a> <a name='L10'></a><a href='#L10'>10</a> <a name='L11'></a><a href='#L11'>11</a> <a name='L12'></a><a href='#L12'>12</a> <a name='L13'></a><a href='#L13'>13</a> <a name='L14'></a><a href='#L14'>14</a> <a name='L15'></a><a href='#L15'>15</a> <a name='L16'></a><a href='#L16'>16</a> <a name='L17'></a><a href='#L17'>17</a> <a name='L18'></a><a href='#L18'>18</a> <a name='L19'></a><a 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    1x   1x             4x 4x 2x 1x         1x   2x             2x 2x 2x 1x     1x                             2x 2x 2x   2x   2x                                                                                                                                     2x 2x             2x 2x 2x      </td><td class="text"><pre class="prettyprint lang-js">/** * BranchManager - Handles message-level branching operations * * Manages creating and switching between branches for individual messages. * Works with the unified branch model where both human alternatives and * subagent branches share the same data structure. * * Human branches: inheritContext=true (includes parent context) * Subagent branches: inheritContext=false (fresh start) */   // import { ConversationRepository } from '../../../database/services/chat/ConversationRepository'; type ConversationRepository = any; import { ConversationData, ConversationMessage } from '../../../types/chat/ChatTypes'; import type { ConversationBranch, HumanBranchMetadata } from '../../../types/branch/BranchTypes';   export interface BranchManagerEvents { onBranchCreated: (messageId: string, branchId: string) => void; onBranchSwitched: (messageId: string, branchId: string) => void; onError: (message: string) => void; }   export class BranchManager { constructor( private conversationRepo: ConversationRepository, private events: BranchManagerEvents ) {}   /** * Create a human branch (alternative response) for a specific message */ async createHumanBranch( conversation: ConversationData, messageId: string, alternativeResponse: ConversationMessage, description?: string ): Promise<string | null> { try { // Find the message in the conversation const messageIndex = conversation.messages.findIndex((msg) => msg.id === messageId); if (messageIndex === -1) { console.error('[BranchManager] Message not found:', messageId); return null; }   const message = conversation.messages[messageIndex];   // Initialize branches array if it doesn't exist if (!message.branches) { message.branches = []; }   // Create the new branch const now = Date.now(); const branchId = `branch-${now}-${Math.random().toString(36).substring(2, 9)}`;   const metadata: HumanBranchMetadata = { description: description || `Alternative response ${message.branches.length + 1}`, };   const newBranch: ConversationBranch = { id: branchId, type: 'human', inheritContext: true, messages: [alternativeResponse], created: now, updated: now, metadata, };   // Add the new branch message.branches.push(newBranch);   // Set the new branch as active message.activeAlternativeIndex = message.branches.length; // 1-based (0 = original)   // Save the updated conversation to repository await this.conversationRepo.updateConversation(conversation.id, { messages: conversation.messages, });   this.events.onBranchCreated(messageId, branchId);   return branchId; } catch (error) { console.error('[BranchManager] Failed to create branch:', error); this.events.onError('Failed to create alternative response'); return null; } }   /** * Switch to a specific branch by ID */ async switchToBranch( conversation: ConversationData, messageId: string, branchId: string ): Promise<boolean> { try { // Find the message in the conversation const messageIndex = conversation.messages.findIndex((msg) => msg.id === messageId); Iif (messageIndex === -1) { console.error('[BranchManager] Message not found:', messageId); return false; }   const message = conversation.messages[messageIndex];   // Find the branch index Iif (!message.branches) { console.error('[BranchManager] No branches on message:', messageId); return false; }   const branchIndex = message.branches.findIndex((b) => b.id === branchId); Iif (branchIndex === -1) { console.error('[BranchManager] Branch not found:', branchId); return false; }   // Update the active alternative index // activeAlternativeIndex: 0 = original, 1+ = branch index + 1 message.activeAlternativeIndex = branchIndex + 1;   // Save the updated conversation to repository await this.conversationRepo.updateConversation(conversation.id, { messages: conversation.messages, });   this.events.onBranchSwitched(messageId, branchId);   return true; } catch (error) { console.error('[BranchManager] Failed to switch branch:', error); this.events.onError('Failed to switch to branch'); return false; } }   /** * Switch to original message (no branch) */ async switchToOriginal( conversation: ConversationData, messageId: string ): Promise<boolean> { try { const messageIndex = conversation.messages.findIndex((msg) => msg.id === messageId); Iif (messageIndex === -1) { return false; }   const message = conversation.messages[messageIndex]; message.activeAlternativeIndex = 0;   await this.conversationRepo.updateConversation(conversation.id, { messages: conversation.messages, });   this.events.onBranchSwitched(messageId, 'original'); return true; } catch (error) { console.error('[BranchManager] Failed to switch to original:', error); return false; } }   /** * Switch to a branch by index (0 = original, 1+ = branch index) */ async switchToBranchByIndex( conversation: ConversationData, messageId: string, index: number ): Promise<boolean> { if (index === 0) { return this.switchToOriginal(conversation, messageId); }   const message = conversation.messages.find((msg) => msg.id === messageId); if (!message?.branches) { return false; }   const branchIndex = index - 1; if (branchIndex < 0 || branchIndex >= message.branches.length) { return false; }   return this.switchToBranch(conversation, messageId, message.branches[branchIndex].id); }   /** * Get the currently active branch for a message */ getActiveBranch(message: ConversationMessage): ConversationBranch | null { const activeIndex = message.activeAlternativeIndex || 0;   // Index 0 is the original message if (activeIndex === 0 || !message.branches) { return null; }   const branchIndex = activeIndex - 1; if (branchIndex >= 0 && branchIndex < message.branches.length) { return message.branches[branchIndex]; }   return null; }   /** * Get the currently active message content (original or from branch) */ getActiveMessageContent(message: ConversationMessage): string { const branch = this.getActiveBranch(message); if (branch) { if (branch.messages.length > 0) { return branch.messages[branch.messages.length - 1].content; } // Active branch exists but has no messages yet (e.g. still loading). // Return empty string rather than falling through to the original message // content, which would be misleading since the user selected this branch. return ''; } return message.content; }   /** * Get the currently active message tool calls */ getActiveMessageToolCalls(message: ConversationMessage): any[] | undefined { const branch = this.getActiveBranch(message); if (branch) { if (branch.messages.length > 0) { return branch.messages[branch.messages.length - 1].toolCalls; } // Active branch exists but has no messages -- return undefined (no data) // rather than the original message's tool calls which belong to a // different alternative. return undefined; } return message.toolCalls; }   /** * Get the currently active message reasoning */ getActiveMessageReasoning(message: ConversationMessage): string | undefined { const branch = this.getActiveBranch(message); if (branch) { if (branch.messages.length > 0) { return branch.messages[branch.messages.length - 1].reasoning; } // Active branch exists but has no messages -- return undefined return undefined; } return message.reasoning; }   /** * Get branch navigation info for a message */ getBranchInfo(message: ConversationMessage): { current: number; total: number; hasBranches: boolean; activeBranchId?: string; activeBranchType?: 'human' | 'subagent'; } { const activeIndex = message.activeAlternativeIndex || 0; const branchCount = message.branches?.length || 0; const total = branchCount + 1; // +1 for original   const branch = this.getActiveBranch(message);   return { current: activeIndex + 1, // 1-based for display total, hasBranches: branchCount > 0, activeBranchId: branch?.id, activeBranchType: branch?.type, }; }   /** * Check if a message has any branches */ hasBranches(message: ConversationMessage): boolean { return (message.branches?.length || 0) > 0; }   /** * Get all branches for a message */ getBranches(message: ConversationMessage): ConversationBranch[] { return message.branches || []; }   /** * Get branch by ID from a message */ getBranchById(message: ConversationMessage, branchId: string): ConversationBranch | null { Iif (!message.branches) { return null; } return message.branches.find((b) => b.id === branchId) || null; }   /** * Check if any branch on a message is a subagent branch */ hasSubagentBranches(message: ConversationMessage): boolean { Iif (!message.branches) { return false; } return message.branches.some((b) => b.type === 'subagent'); }   /** * Get only subagent branches for a message */ getSubagentBranches(message: ConversationMessage): ConversationBranch[] { Iif (!message.branches) { return []; } return message.branches.filter((b) => b.type === 'subagent'); }   /** * Get only human branches for a message */ getHumanBranches(message: ConversationMessage): ConversationBranch[] { Iif (!message.branches) { return []; } return message.branches.filter((b) => b.type === 'human'); }   /** * Navigate to previous branch/original */ getPreviousIndex(message: ConversationMessage): number | null { const currentIndex = message.activeAlternativeIndex || 0; return currentIndex > 0 ? currentIndex - 1 : null; }   /** * Navigate to next branch */ getNextIndex(message: ConversationMessage): number | null { const currentIndex = message.activeAlternativeIndex || 0; const total = (message.branches?.length || 0) + 1; return currentIndex < total - 1 ? currentIndex + 1 : null; } }  </pre></td></tr></table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a> at 2026-02-05T23:55:39.354Z </div> <script src="../../../prettify.js"></script> <script> window.onload = function () { prettyPrint(); }; </script> <script src="../../../sorter.js"></script> <script src="../../../block-navigation.js"></script> </body> </html>

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