adding a queue system to the agent runner

apps/server/src/routes/backlog-plan/routes/apply.ts

@@ -0,0 +1,147 @@
+/**
+ * POST /apply endpoint - Apply a backlog plan
+ */
+
+import type { Request, Response } from 'express';
+import type { BacklogPlanResult, BacklogChange, Feature } from '@automaker/types';
+import { FeatureLoader } from '../../../services/feature-loader.js';
+import { getErrorMessage, logError, logger } from '../common.js';
+
+const featureLoader = new FeatureLoader();
+
+export function createApplyHandler() {
+  return async (req: Request, res: Response): Promise<void> => {
+    try {
+      const { projectPath, plan } = req.body as {
+        projectPath: string;
+        plan: BacklogPlanResult;
+      };
+
+      if (!projectPath) {
+        res.status(400).json({ success: false, error: 'projectPath required' });
+        return;
+      }
+
+      if (!plan || !plan.changes) {
+        res.status(400).json({ success: false, error: 'plan with changes required' });
+        return;
+      }
+
+      const appliedChanges: string[] = [];
+
+      // Load current features for dependency validation
+      const allFeatures = await featureLoader.getAll(projectPath);
+      const featureMap = new Map(allFeatures.map((f) => [f.id, f]));
+
+      // Process changes in order: deletes first, then adds, then updates
+      // This ensures we can remove dependencies before they cause issues
+
+      // 1. First pass: Handle deletes
+      const deletions = plan.changes.filter((c) => c.type === 'delete');
+      for (const change of deletions) {
+        if (!change.featureId) continue;
+
+        try {
+          // Before deleting, update any features that depend on this one
+          for (const feature of allFeatures) {
+            if (feature.dependencies?.includes(change.featureId)) {
+              const newDeps = feature.dependencies.filter((d) => d !== change.featureId);
+              await featureLoader.update(projectPath, feature.id, { dependencies: newDeps });
+              logger.info(
+                `[BacklogPlan] Removed dependency ${change.featureId} from ${feature.id}`
+              );
+            }
+          }
+
+          // Now delete the feature
+          const deleted = await featureLoader.delete(projectPath, change.featureId);
+          if (deleted) {
+            appliedChanges.push(`deleted:${change.featureId}`);
+            featureMap.delete(change.featureId);
+            logger.info(`[BacklogPlan] Deleted feature ${change.featureId}`);
+          }
+        } catch (error) {
+          logger.error(
+            `[BacklogPlan] Failed to delete ${change.featureId}:`,
+            getErrorMessage(error)
+          );
+        }
+      }
+
+      // 2. Second pass: Handle adds
+      const additions = plan.changes.filter((c) => c.type === 'add');
+      for (const change of additions) {
+        if (!change.feature) continue;
+
+        try {
+          // Create the new feature
+          const newFeature = await featureLoader.create(projectPath, {
+            title: change.feature.title,
+            description: change.feature.description || '',
+            category: change.feature.category || 'Uncategorized',
+            dependencies: change.feature.dependencies,
+            priority: change.feature.priority,
+            status: 'backlog',
+          });
+
+          appliedChanges.push(`added:${newFeature.id}`);
+          featureMap.set(newFeature.id, newFeature);
+          logger.info(`[BacklogPlan] Created feature ${newFeature.id}: ${newFeature.title}`);
+        } catch (error) {
+          logger.error(`[BacklogPlan] Failed to add feature:`, getErrorMessage(error));
+        }
+      }
+
+      // 3. Third pass: Handle updates
+      const updates = plan.changes.filter((c) => c.type === 'update');
+      for (const change of updates) {
+        if (!change.featureId || !change.feature) continue;
+
+        try {
+          const updated = await featureLoader.update(projectPath, change.featureId, change.feature);
+          appliedChanges.push(`updated:${change.featureId}`);
+          featureMap.set(change.featureId, updated);
+          logger.info(`[BacklogPlan] Updated feature ${change.featureId}`);
+        } catch (error) {
+          logger.error(
+            `[BacklogPlan] Failed to update ${change.featureId}:`,
+            getErrorMessage(error)
+          );
+        }
+      }
+
+      // 4. Apply dependency updates from the plan
+      if (plan.dependencyUpdates) {
+        for (const depUpdate of plan.dependencyUpdates) {
+          try {
+            const feature = featureMap.get(depUpdate.featureId);
+            if (feature) {
+              const currentDeps = feature.dependencies || [];
+              const newDeps = currentDeps
+                .filter((d) => !depUpdate.removedDependencies.includes(d))
+                .concat(depUpdate.addedDependencies.filter((d) => !currentDeps.includes(d)));
+
+              await featureLoader.update(projectPath, depUpdate.featureId, {
+                dependencies: newDeps,
+              });
+              logger.info(`[BacklogPlan] Updated dependencies for ${depUpdate.featureId}`);
+            }
+          } catch (error) {
+            logger.error(
+              `[BacklogPlan] Failed to update dependencies for ${depUpdate.featureId}:`,
+              getErrorMessage(error)
+            );
+          }
+        }
+      }
+
+      res.json({
+        success: true,
+        appliedChanges,
+      });
+    } catch (error) {
+      logError(error, 'Apply backlog plan failed');
+      res.status(500).json({ success: false, error: getErrorMessage(error) });
+    }
+  };
+}