refactor: move projects provider specific logic into respective session providers

server/modules/providers/list/claude/claude-sessions.provider.ts

@@ -1,7 +1,13 @@
-import { getSessionMessages } from '@/projects.js';
+import fs from 'node:fs';
+import fsp from 'node:fs/promises';
+import os from 'node:os';
+import path from 'node:path';
+import readline from 'node:readline';
+
 import type { IProviderSessions } from '@/shared/interfaces.js';
 import type { AnyRecord, FetchHistoryOptions, FetchHistoryResult, NormalizedMessage } from '@/shared/types.js';
 import { createNormalizedMessage, generateMessageId, readObjectRecord } from '@/shared/utils.js';
+import { sessionsDb } from '@/modules/database/index.js';
 
 const PROVIDER = 'claude';
 
@@ -15,17 +21,186 @@ type ClaudeToolResult = {
 type ClaudeHistoryResult =
   | AnyRecord[]
   | {
-      messages?: AnyRecord[];
-      total?: number;
-      hasMore?: boolean;
-    };
+    messages?: AnyRecord[];
+    total?: number;
+    hasMore?: boolean;
+  };
 
-const loadClaudeSessionMessages = getSessionMessages as unknown as (
+type ClaudeHistoryMessagesResult =
+  | AnyRecord[]
+  | {
+    messages: AnyRecord[];
+    total: number;
+    hasMore: boolean;
+    offset?: number;
+    limit?: number | null;
+  };
+
+async function parseAgentTools(filePath: string): Promise<AnyRecord[]> {
+  const tools: AnyRecord[] = [];
+
+  try {
+    const fileStream = fs.createReadStream(filePath);
+    const rl = readline.createInterface({
+      input: fileStream,
+      crlfDelay: Infinity,
+    });
+
+    for await (const line of rl) {
+      if (!line.trim()) {
+        continue;
+      }
+
+      try {
+        const entry = JSON.parse(line) as AnyRecord;
+
+        if (entry.message?.role === 'assistant' && Array.isArray(entry.message?.content)) {
+          for (const part of entry.message.content as AnyRecord[]) {
+            if (part.type === 'tool_use') {
+              tools.push({
+                toolId: part.id,
+                toolName: part.name,
+                toolInput: part.input,
+                timestamp: entry.timestamp,
+              });
+            }
+          }
+        }
+
+        if (entry.message?.role === 'user' && Array.isArray(entry.message?.content)) {
+          for (const part of entry.message.content as AnyRecord[]) {
+            if (part.type !== 'tool_result') {
+              continue;
+            }
+
+            const tool = tools.find((candidate) => candidate.toolId === part.tool_use_id);
+            if (!tool) {
+              continue;
+            }
+
+            tool.toolResult = {
+              content: typeof part.content === 'string'
+                ? part.content
+                : Array.isArray(part.content)
+                  ? part.content
+                    .map((contentPart: AnyRecord) => contentPart?.text || '')
+                    .join('\n')
+                  : JSON.stringify(part.content),
+              isError: Boolean(part.is_error),
+            };
+          }
+        }
+      } catch {
+        // Skip malformed lines that can happen during concurrent writes.
+      }
+    }
+  } catch (error) {
+    const message = error instanceof Error ? error.message : String(error);
+    console.warn(`Error parsing agent file ${filePath}:`, message);
+  }
+
+  return tools;
+}
+
+async function getSessionMessages(
   projectName: string,
   sessionId: string,
   limit: number | null,
   offset: number,
-) => Promise<ClaudeHistoryResult>;
+): Promise<ClaudeHistoryMessagesResult> {
+  const projectDir = path.join(os.homedir(), '.claude', 'projects', projectName);
+
+  try {
+    const jsonLPath = sessionsDb.getSessionById(sessionId)?.jsonl_path;
+
+    if (!jsonLPath) {
+      return { messages: [], total: 0, hasMore: false };
+    }
+
+    const files = await fsp.readdir(projectDir);
+    const agentFiles = files.filter((file) => file.endsWith('.jsonl') && file.startsWith('agent-'));
+
+    const messages: AnyRecord[] = [];
+    const agentToolsCache = new Map<string, AnyRecord[]>();
+
+    const fileStream = fs.createReadStream(jsonLPath);
+    const rl = readline.createInterface({
+      input: fileStream,
+      crlfDelay: Infinity,
+    });
+
+    for await (const line of rl) {
+      if (!line.trim()) {
+        continue;
+      }
+
+      try {
+        const entry = JSON.parse(line) as AnyRecord;
+        if (entry.sessionId === sessionId) {
+          messages.push(entry);
+        }
+      } catch {
+        // Skip malformed JSONL lines that can happen during concurrent writes.
+      }
+    }
+
+    const agentIds = new Set<string>();
+    for (const message of messages) {
+      const agentId = message.toolUseResult?.agentId;
+      if (agentId) {
+        agentIds.add(String(agentId));
+      }
+    }
+
+    for (const agentId of agentIds) {
+      const agentFileName = `agent-${agentId}.jsonl`;
+      if (!agentFiles.includes(agentFileName)) {
+        continue;
+      }
+
+      const agentFilePath = path.join(projectDir, agentFileName);
+      const tools = await parseAgentTools(agentFilePath);
+      agentToolsCache.set(agentId, tools);
+    }
+
+    for (const message of messages) {
+      const agentId = message.toolUseResult?.agentId;
+      if (!agentId) {
+        continue;
+      }
+
+      const agentTools = agentToolsCache.get(String(agentId));
+      if (agentTools && agentTools.length > 0) {
+        message.subagentTools = agentTools;
+      }
+    }
+
+    const sortedMessages = messages.sort(
+      (a, b) => new Date(a.timestamp || 0).getTime() - new Date(b.timestamp || 0).getTime(),
+    );
+    const total = sortedMessages.length;
+
+    if (limit === null) {
+      return sortedMessages;
+    }
+
+    const startIndex = Math.max(0, total - offset - limit);
+    const endIndex = total - offset;
+    const paginatedMessages = sortedMessages.slice(startIndex, endIndex);
+    const hasMore = startIndex > 0;
+
+    return {
+      messages: paginatedMessages,
+      total,
+      hasMore,
+      offset,
+      limit,
+    };
+  } catch (error) {
+    console.error(`Error reading messages for session ${sessionId}:`, error);
+    return limit === null ? [] : { messages: [], total: 0, hasMore: false };
+  }
+}
 
 /**
  * Claude writes internal command and system reminder entries into history.
@@ -245,7 +420,7 @@ export class ClaudeSessionsProvider implements IProviderSessions {
 
     let result: ClaudeHistoryResult;
     try {
-      result = await loadClaudeSessionMessages(projectName, sessionId, limit, offset);
+      result = await getSessionMessages(projectName, sessionId, limit, offset);
     } catch (error) {
       const message = error instanceof Error ? error.message : String(error);
       console.warn(`[ClaudeProvider] Failed to load session ${sessionId}:`, message);