feat(db): index users by email

services/database/ProductionDatabaseStrategy.ts

@@ -47,6 +47,9 @@ export class ProductionDatabaseStrategy implements DatabaseStrategy {
     for (const dbName of databases) {
       try {
         await this.createDatabaseIfNotExists(dbName);
+        if (dbName === 'users') {
+          await this.ensureUserEmailIndex();
+        }
       } catch (error) {
         logger.db.error(
           `Failed to initialize database ${dbName}`,
@@ -56,6 +59,40 @@ export class ProductionDatabaseStrategy implements DatabaseStrategy {
     }
   }
 
+  private async ensureUserEmailIndex(): Promise<void> {
+    try {
+      const indexes = await this.makeRequest<{
+        indexes: Array<{
+          name: string;
+          def: { fields: Array<Record<string, string>> };
+        }>;
+      }>('GET', '/users/_index');
+
+      const hasEmailIndex = indexes.indexes.some(index => {
+        if (index.name === 'email-index') {
+          return true;
+        }
+        return index.def.fields.some(
+          field => Object.keys(field)[0] === 'email'
+        );
+      });
+
+      if (hasEmailIndex) {
+        return;
+      }
+
+      await this.makeRequest('POST', '/users/_index', {
+        index: { fields: ['email'] },
+        name: 'email-index',
+        type: 'json',
+      });
+
+      logger.db.query('Created email index for users database');
+    } catch (error) {
+      logger.db.error('Failed to ensure user email index', error as Error);
+    }
+  }
+
   private async createDatabaseIfNotExists(dbName: string): Promise<void> {
     try {
       // Check if database exists
@@ -225,13 +262,14 @@ export class ProductionDatabaseStrategy implements DatabaseStrategy {
 
   async findUserByEmail(email: string): Promise<User | null> {
     const response = await this.makeRequest<{
-      rows: Array<{ doc: User }>;
+      docs: User[];
+      warning?: string;
     }>('POST', '/users/_find', {
       selector: { email },
       limit: 1,
     });
 
-    return response.rows[0]?.doc || null;
+    return response.docs[0] || null;
   }
 
   async deleteUser(id: string): Promise<boolean> {