feat: orchestration harness, selective install, observer improvements

scripts/lib/session-adapters/claude-history.js

@@ -0,0 +1,147 @@
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+
+const sessionManager = require('../session-manager');
+const sessionAliases = require('../session-aliases');
+const { normalizeClaudeHistorySession } = require('./canonical-session');
+
+function parseClaudeTarget(target) {
+  if (typeof target !== 'string') {
+    return null;
+  }
+
+  for (const prefix of ['claude-history:', 'claude:', 'history:']) {
+    if (target.startsWith(prefix)) {
+      return target.slice(prefix.length).trim();
+    }
+  }
+
+  return null;
+}
+
+function isSessionFileTarget(target, cwd) {
+  if (typeof target !== 'string' || target.length === 0) {
+    return false;
+  }
+
+  const absoluteTarget = path.resolve(cwd, target);
+  return fs.existsSync(absoluteTarget)
+    && fs.statSync(absoluteTarget).isFile()
+    && absoluteTarget.endsWith('.tmp');
+}
+
+function hydrateSessionFromPath(sessionPath) {
+  const filename = path.basename(sessionPath);
+  const parsed = sessionManager.parseSessionFilename(filename);
+  if (!parsed) {
+    throw new Error(`Unsupported session file: ${sessionPath}`);
+  }
+
+  const content = sessionManager.getSessionContent(sessionPath);
+  const stats = fs.statSync(sessionPath);
+
+  return {
+    ...parsed,
+    sessionPath,
+    content,
+    metadata: sessionManager.parseSessionMetadata(content),
+    stats: sessionManager.getSessionStats(content || ''),
+    size: stats.size,
+    modifiedTime: stats.mtime,
+    createdTime: stats.birthtime || stats.ctime
+  };
+}
+
+function resolveSessionRecord(target, cwd) {
+  const explicitTarget = parseClaudeTarget(target);
+
+  if (explicitTarget) {
+    if (explicitTarget === 'latest') {
+      const [latest] = sessionManager.getAllSessions({ limit: 1 }).sessions;
+      if (!latest) {
+        throw new Error('No Claude session history found');
+      }
+
+      return {
+        session: sessionManager.getSessionById(latest.filename, true),
+        sourceTarget: {
+          type: 'claude-history',
+          value: 'latest'
+        }
+      };
+    }
+
+    const alias = sessionAliases.resolveAlias(explicitTarget);
+    if (alias) {
+      return {
+        session: hydrateSessionFromPath(alias.sessionPath),
+        sourceTarget: {
+          type: 'claude-alias',
+          value: explicitTarget
+        }
+      };
+    }
+
+    const session = sessionManager.getSessionById(explicitTarget, true);
+    if (!session) {
+      throw new Error(`Claude session not found: ${explicitTarget}`);
+    }
+
+    return {
+      session,
+      sourceTarget: {
+        type: 'claude-history',
+        value: explicitTarget
+      }
+    };
+  }
+
+  if (isSessionFileTarget(target, cwd)) {
+    return {
+      session: hydrateSessionFromPath(path.resolve(cwd, target)),
+      sourceTarget: {
+        type: 'session-file',
+        value: path.resolve(cwd, target)
+      }
+    };
+  }
+
+  throw new Error(`Unsupported Claude session target: ${target}`);
+}
+
+function createClaudeHistoryAdapter() {
+  return {
+    id: 'claude-history',
+    canOpen(target, context = {}) {
+      if (context.adapterId && context.adapterId !== 'claude-history') {
+        return false;
+      }
+
+      if (context.adapterId === 'claude-history') {
+        return true;
+      }
+
+      const cwd = context.cwd || process.cwd();
+      return parseClaudeTarget(target) !== null || isSessionFileTarget(target, cwd);
+    },
+    open(target, context = {}) {
+      const cwd = context.cwd || process.cwd();
+
+      return {
+        adapterId: 'claude-history',
+        getSnapshot() {
+          const { session, sourceTarget } = resolveSessionRecord(target, cwd);
+          return normalizeClaudeHistorySession(session, sourceTarget);
+        }
+      };
+    }
+  };
+}
+
+module.exports = {
+  createClaudeHistoryAdapter,
+  isSessionFileTarget,
+  parseClaudeTarget
+};