refactor: move projects provider specific logic into respective session providers

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

@@ -1,4 +1,7 @@
-import { getCodexSessionMessages } from '@/projects.js';
+import fsSync from 'node:fs';
+import readline from 'node:readline';
+
+import { sessionsDb } from '@/modules/database/index.js';
 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';
@@ -11,14 +14,250 @@ type CodexHistoryResult =
       messages?: AnyRecord[];
       total?: number;
       hasMore?: boolean;
+      offset?: number;
+      limit?: number | null;
       tokenUsage?: unknown;
     };
 
-const loadCodexSessionMessages = getCodexSessionMessages as unknown as (
+function isVisibleCodexUserMessage(payload: AnyRecord | null | undefined): boolean {
+  if (!payload || payload.type !== 'user_message') {
+    return false;
+  }
+
+  if (payload.kind && payload.kind !== 'plain') {
+    return false;
+  }
+
+  return typeof payload.message === 'string' && payload.message.trim().length > 0;
+}
+
+function extractCodexTextContent(content: unknown): string {
+  if (!Array.isArray(content)) {
+    return typeof content === 'string' ? content : '';
+  }
+
+  return content
+    .map((item) => {
+      if (!item || typeof item !== 'object') {
+        return '';
+      }
+
+      const record = item as AnyRecord;
+      if (
+        (record.type === 'input_text' || record.type === 'output_text' || record.type === 'text')
+        && typeof record.text === 'string'
+      ) {
+        return record.text;
+      }
+
+      return '';
+    })
+    .filter(Boolean)
+    .join('\n');
+}
+
+async function getCodexSessionMessages(
   sessionId: string,
-  limit: number | null,
-  offset: number,
-) => Promise<CodexHistoryResult>;
+  limit: number | null = null,
+  offset = 0,
+): Promise<CodexHistoryResult> {
+  try {
+    const sessionFilePath = sessionsDb.getSessionById(sessionId)?.jsonl_path;
+
+    if (!sessionFilePath) {
+      console.warn(`Codex session file not found for session ${sessionId}`);
+      return { messages: [], total: 0, hasMore: false };
+    }
+
+    const messages: AnyRecord[] = [];
+    let tokenUsage: AnyRecord | null = null;
+    const fileStream = fsSync.createReadStream(sessionFilePath);
+    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.type === 'event_msg' && entry.payload?.type === 'token_count' && entry.payload?.info) {
+          const info = entry.payload.info as AnyRecord;
+          if (info.total_token_usage) {
+            const usage = info.total_token_usage as AnyRecord;
+            tokenUsage = {
+              used: usage.total_tokens || 0,
+              total: info.model_context_window || 200000,
+            };
+          }
+        }
+
+        if (entry.type === 'event_msg' && isVisibleCodexUserMessage(entry.payload as AnyRecord)) {
+          messages.push({
+            type: 'user',
+            timestamp: entry.timestamp,
+            message: {
+              role: 'user',
+              content: entry.payload.message,
+            },
+          });
+        }
+
+        if (
+          entry.type === 'response_item' &&
+          entry.payload?.type === 'message' &&
+          entry.payload.role === 'assistant'
+        ) {
+          const textContent = extractCodexTextContent(entry.payload.content);
+          if (textContent.trim()) {
+            messages.push({
+              type: 'assistant',
+              timestamp: entry.timestamp,
+              message: {
+                role: 'assistant',
+                content: textContent,
+              },
+            });
+          }
+        }
+
+        if (entry.type === 'response_item' && entry.payload?.type === 'reasoning') {
+          const summaryText = Array.isArray(entry.payload.summary)
+            ? entry.payload.summary
+                .map((item: AnyRecord) => item?.text)
+                .filter(Boolean)
+                .join('\n')
+            : '';
+
+          if (summaryText.trim()) {
+            messages.push({
+              type: 'thinking',
+              timestamp: entry.timestamp,
+              message: {
+                role: 'assistant',
+                content: summaryText,
+              },
+            });
+          }
+        }
+
+        if (entry.type === 'response_item' && entry.payload?.type === 'function_call') {
+          let toolName = entry.payload.name;
+          let toolInput = entry.payload.arguments;
+
+          if (toolName === 'shell_command') {
+            toolName = 'Bash';
+            try {
+              const args = JSON.parse(entry.payload.arguments) as AnyRecord;
+              toolInput = JSON.stringify({ command: args.command });
+            } catch {
+              // Keep original arguments when parsing fails.
+            }
+          }
+
+          messages.push({
+            type: 'tool_use',
+            timestamp: entry.timestamp,
+            toolName,
+            toolInput,
+            toolCallId: entry.payload.call_id,
+          });
+        }
+
+        if (entry.type === 'response_item' && entry.payload?.type === 'function_call_output') {
+          messages.push({
+            type: 'tool_result',
+            timestamp: entry.timestamp,
+            toolCallId: entry.payload.call_id,
+            output: entry.payload.output,
+          });
+        }
+
+        if (entry.type === 'response_item' && entry.payload?.type === 'custom_tool_call') {
+          const toolName = entry.payload.name || 'custom_tool';
+          const input = entry.payload.input || '';
+
+          if (toolName === 'apply_patch') {
+            const fileMatch = String(input).match(/\*\*\* Update File: (.+)/);
+            const filePath = fileMatch ? fileMatch[1].trim() : 'unknown';
+            const lines = String(input).split('\n');
+            const oldLines: string[] = [];
+            const newLines: string[] = [];
+
+            for (const lineContent of lines) {
+              if (lineContent.startsWith('-') && !lineContent.startsWith('---')) {
+                oldLines.push(lineContent.slice(1));
+              } else if (lineContent.startsWith('+') && !lineContent.startsWith('+++')) {
+                newLines.push(lineContent.slice(1));
+              }
+            }
+
+            messages.push({
+              type: 'tool_use',
+              timestamp: entry.timestamp,
+              toolName: 'Edit',
+              toolInput: JSON.stringify({
+                file_path: filePath,
+                old_string: oldLines.join('\n'),
+                new_string: newLines.join('\n'),
+              }),
+              toolCallId: entry.payload.call_id,
+            });
+          } else {
+            messages.push({
+              type: 'tool_use',
+              timestamp: entry.timestamp,
+              toolName,
+              toolInput: input,
+              toolCallId: entry.payload.call_id,
+            });
+          }
+        }
+
+        if (entry.type === 'response_item' && entry.payload?.type === 'custom_tool_call_output') {
+          messages.push({
+            type: 'tool_result',
+            timestamp: entry.timestamp,
+            toolCallId: entry.payload.call_id,
+            output: entry.payload.output || '',
+          });
+        }
+      } catch {
+        // Skip malformed lines.
+      }
+    }
+
+    messages.sort(
+      (a, b) => new Date(a.timestamp || 0).getTime() - new Date(b.timestamp || 0).getTime(),
+    );
+    const total = messages.length;
+
+    if (limit !== null) {
+      const startIndex = Math.max(0, total - offset - limit);
+      const endIndex = total - offset;
+      const paginatedMessages = messages.slice(startIndex, endIndex);
+      const hasMore = startIndex > 0;
+
+      return {
+        messages: paginatedMessages,
+        total,
+        hasMore,
+        offset,
+        limit,
+        tokenUsage,
+      };
+    }
+
+    return { messages, tokenUsage };
+  } catch (error) {
+    console.error(`Error reading Codex session messages for ${sessionId}:`, error);
+    return { messages: [], total: 0, hasMore: false };
+  }
+}
 
 export class CodexSessionsProvider implements IProviderSessions {
   /**
@@ -275,7 +514,7 @@ export class CodexSessionsProvider implements IProviderSessions {
 
     let result: CodexHistoryResult;
     try {
-      result = await loadCodexSessionMessages(sessionId, limit, offset);
+      result = await getCodexSessionMessages(sessionId, limit, offset);
     } catch (error) {
       const message = error instanceof Error ? error.message : String(error);
       console.warn(`[CodexProvider] Failed to load session ${sessionId}:`, message);