rating

core/identity/application/use-cases/CastAdminVoteUseCase.ts

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+import { IAdminVoteSessionRepository } from '../../domain/repositories/IAdminVoteSessionRepository';
+import { CastAdminVoteInput, CastAdminVoteOutput } from '../dtos/AdminVoteSessionDto';
+
+/**
+ * Use Case: CastAdminVoteUseCase
+ * 
+ * Casts a vote in an active admin vote session.
+ * Follows CQRS Light: command side operation.
+ * 
+ * Per plans section 7.1.1
+ */
+export class CastAdminVoteUseCase {
+  constructor(
+    private readonly adminVoteSessionRepository: IAdminVoteSessionRepository,
+  ) {}
+
+  async execute(input: CastAdminVoteInput): Promise<CastAdminVoteOutput> {
+    try {
+      // Validate input
+      const errors = this.validateInput(input);
+      if (errors.length > 0) {
+        return {
+          success: false,
+          voteSessionId: input.voteSessionId,
+          voterId: input.voterId,
+          errors,
+        };
+      }
+
+      // Load the vote session
+      const session = await this.adminVoteSessionRepository.findById(input.voteSessionId);
+      if (!session) {
+        return {
+          success: false,
+          voteSessionId: input.voteSessionId,
+          voterId: input.voterId,
+          errors: ['Vote session not found'],
+        };
+      }
+
+      // Check if session is open
+      const voteTime = input.votedAt ? new Date(input.votedAt) : new Date();
+      if (!session.isVotingWindowOpen(voteTime)) {
+        return {
+          success: false,
+          voteSessionId: input.voteSessionId,
+          voterId: input.voterId,
+          errors: ['Vote session is not open for voting'],
+        };
+      }
+
+      // Cast the vote
+      session.castVote(input.voterId, input.positive, voteTime);
+
+      // Save updated session
+      await this.adminVoteSessionRepository.save(session);
+
+      return {
+        success: true,
+        voteSessionId: input.voteSessionId,
+        voterId: input.voterId,
+      };
+
+    } catch (error) {
+      const errorMsg = error instanceof Error ? error.message : 'Unknown error';
+      return {
+        success: false,
+        voteSessionId: input.voteSessionId,
+        voterId: input.voterId,
+        errors: [`Failed to cast vote: ${errorMsg}`],
+      };
+    }
+  }
+
+  private validateInput(input: CastAdminVoteInput): string[] {
+    const errors: string[] = [];
+
+    if (!input.voteSessionId || input.voteSessionId.trim().length === 0) {
+      errors.push('voteSessionId is required');
+    }
+
+    if (!input.voterId || input.voterId.trim().length === 0) {
+      errors.push('voterId is required');
+    }
+
+    if (typeof input.positive !== 'boolean') {
+      errors.push('positive must be a boolean value');
+    }
+
+    if (input.votedAt) {
+      const votedAt = new Date(input.votedAt);
+      if (isNaN(votedAt.getTime())) {
+        errors.push('votedAt must be a valid date if provided');
+      }
+    }
+
+    return errors;
+  }
+}