/**
 * InMemory implementation of ISponsorshipRequestRepository
 */

import type { ISponsorshipRequestRepository } from '../../domain/repositories/ISponsorshipRequestRepository';
import { 
  SponsorshipRequest, 
  type SponsorableEntityType, 
  type SponsorshipRequestStatus 
} from '../../domain/entities/SponsorshipRequest';
import type { ILogger } from '@gridpilot/shared/logging/ILogger';

export class InMemorySponsorshipRequestRepository implements ISponsorshipRequestRepository {
  private requests: Map<string, SponsorshipRequest> = new Map();
  private readonly logger: ILogger;

  constructor(logger: ILogger, seedData?: SponsorshipRequest[]) {
   this.logger = logger;
   this.logger.info('InMemorySponsorshipRequestRepository initialized.');
    if (seedData) {
      this.seed(seedData);
    }
  }

  async findById(id: string): Promise<SponsorshipRequest | null> {
   this.logger.debug(`Finding sponsorship request by id: ${id}`);
   try {
     const request = this.requests.get(id) ?? null;
     if (request) {
       this.logger.info(`Found sponsorship request: ${id}.`);
     } else {
       this.logger.warn(`Sponsorship request with id ${id} not found.`);
     }
     return request;
   } catch (error) {
     this.logger.error(`Error finding sponsorship request by id ${id}:`, error);
     throw error;
   }
  }

  async findByEntity(entityType: SponsorableEntityType, entityId: string): Promise<SponsorshipRequest[]> {
   this.logger.debug(`Finding sponsorship requests by entity: ${entityType}, ${entityId}`);
   try {
     const requests = Array.from(this.requests.values()).filter(
       request => request.entityType === entityType && request.entityId === entityId
     );
     this.logger.info(`Found ${requests.length} sponsorship requests for entity: ${entityType}, ${entityId}.`);
     return requests;
   } catch (error) {
     this.logger.error(`Error finding sponsorship requests by entity ${entityType}, ${entityId}:`, error);
     throw error;
   }
  }

  async findPendingByEntity(entityType: SponsorableEntityType, entityId: string): Promise<SponsorshipRequest[]> {
   this.logger.debug(`Finding pending sponsorship requests by entity: ${entityType}, ${entityId}`);
   try {
     const requests = Array.from(this.requests.values()).filter(
       request =>
         request.entityType === entityType &&
         request.entityId === entityId &&
         request.status === 'pending'
     );
     this.logger.info(`Found ${requests.length} pending sponsorship requests for entity: ${entityType}, ${entityId}.`);
     return requests;
   } catch (error) {
     this.logger.error(`Error finding pending sponsorship requests by entity ${entityType}, ${entityId}:`, error);
     throw error;
   }
  }

  async findBySponsorId(sponsorId: string): Promise<SponsorshipRequest[]> {
   this.logger.debug(`Finding sponsorship requests by sponsor id: ${sponsorId}`);
   try {
     const requests = Array.from(this.requests.values()).filter(
       request => request.sponsorId === sponsorId
     );
     this.logger.info(`Found ${requests.length} sponsorship requests for sponsor id: ${sponsorId}.`);
     return requests;
   } catch (error) {
     this.logger.error(`Error finding sponsorship requests by sponsor id ${sponsorId}:`, error);
     throw error;
   }
  }

  async findByStatus(status: SponsorshipRequestStatus): Promise<SponsorshipRequest[]> {
   this.logger.debug(`Finding sponsorship requests by status: ${status}`);
   try {
     const requests = Array.from(this.requests.values()).filter(
       request => request.status === status
     );
     this.logger.info(`Found ${requests.length} sponsorship requests with status: ${status}.`);
     return requests;
   } catch (error) {
     this.logger.error(`Error finding sponsorship requests by status ${status}:`, error);
     throw error;
   }
  }

  async findBySponsorIdAndStatus(sponsorId: string, status: SponsorshipRequestStatus): Promise<SponsorshipRequest[]> {
   this.logger.debug(`Finding sponsorship requests by sponsor id: ${sponsorId} and status: ${status}`);
   try {
     const requests = Array.from(this.requests.values()).filter(
       request => request.sponsorId === sponsorId && request.status === status
     );
     this.logger.info(`Found ${requests.length} sponsorship requests for sponsor id: ${sponsorId}, status: ${status}.`);
     return requests;
   } catch (error) {
     this.logger.error(`Error finding sponsorship requests by sponsor id ${sponsorId}, status ${status}:`, error);
     throw error;
   }
  }

  async hasPendingRequest(sponsorId: string, entityType: SponsorableEntityType, entityId: string): Promise<boolean> {
   this.logger.debug(`Checking for pending request from sponsor: ${sponsorId} for entity: ${entityType}, ${entityId}`);
   try {
     const has = Array.from(this.requests.values()).some(
       request =>
         request.sponsorId === sponsorId &&
         request.entityType === entityType &&
         request.entityId === entityId &&
         request.status === 'pending'
     );
     this.logger.debug(`Pending request exists: ${has}.`);
     return has;
   } catch (error) {
     this.logger.error(`Error checking for pending request from sponsor ${sponsorId} for entity ${entityType}, ${entityId}:`, error);
     throw error;
   }
  }

  async countPendingByEntity(entityType: SponsorableEntityType, entityId: string): Promise<number> {
   this.logger.debug(`Counting pending requests for entity: ${entityType}, ${entityId}`);
   try {
    const count = Array.from(this.requests.values()).filter(
       request =>
         request.entityType === entityType &&
         request.entityId === entityId &&
         request.status === 'pending'
     ).length;
     this.logger.info(`Counted ${count} pending requests for entity: ${entityType}, ${entityId}.`);
     return count;
   } catch (error) {
     this.logger.error(`Error counting pending requests for entity ${entityType}, ${entityId}:`, error);
     throw error;
   }
  }

  async create(request: SponsorshipRequest): Promise<SponsorshipRequest> {
   this.logger.debug(`Creating sponsorship request: ${request.id}`);
   try {
     if (this.requests.has(request.id)) {
       this.logger.warn(`SponsorshipRequest with ID ${request.id} already exists.`);
       throw new Error(`SponsorshipRequest with ID ${request.id} already exists`);
     }
     this.requests.set(request.id, request);
     this.logger.info(`SponsorshipRequest ${request.id} created successfully.`);
     return request;
   } catch (error) {
     this.logger.error(`Error creating sponsorship request ${request.id}:`, error);
     throw error;
   }
  }

  async update(request: SponsorshipRequest): Promise<SponsorshipRequest> {
   this.logger.debug(`Updating sponsorship request: ${request.id}`);
   try {
     if (!this.requests.has(request.id)) {
       this.logger.warn(`SponsorshipRequest ${request.id} not found for update.`);
       throw new Error(`SponsorshipRequest ${request.id} not found`);
     }
     this.requests.set(request.id, request);
     this.logger.info(`SponsorshipRequest ${request.id} updated successfully.`);
     return request;
   } catch (error) {
     this.logger.error(`Error updating sponsorship request ${request.id}:`, error);
     throw error;
   }
  }

  async delete(id: string): Promise<void> {
   this.logger.debug(`Deleting sponsorship request: ${id}`);
   try {
     if (this.requests.delete(id)) {
       this.logger.info(`SponsorshipRequest ${id} deleted successfully.`);
     } else {
       this.logger.warn(`SponsorshipRequest with id ${id} not found for deletion.`);
     }
   } catch (error) {
     this.logger.error(`Error deleting sponsorship request ${id}:`, error);
     throw error;
   }
  }

  async exists(id: string): Promise<boolean> {
   this.logger.debug(`Checking existence of sponsorship request with id: ${id}`);
   try {
     const exists = this.requests.has(id);
     this.logger.debug(`Sponsorship request ${id} exists: ${exists}.`);
     return exists;
   } catch (error) {
     this.logger.error(`Error checking existence of sponsorship request with id ${id}:`, error);
     throw error;
   }
  }

  /**
   * Seed initial data
   */
  seed(requests: SponsorshipRequest[]): void {
   this.logger.debug(`Seeding ${requests.length} sponsorship requests.`);
   try {
     for (const request of requests) {
       this.requests.set(request.id, request);
       this.logger.debug(`Seeded sponsorship request: ${request.id}.`);
     }
     this.logger.info(`Successfully seeded ${requests.length} sponsorship requests.`);
   } catch (error) {
     this.logger.error(`Error seeding sponsorship requests:`, error);
     throw error;
   }
  }

  /**
   * Clear all data (for testing)
   */
  clear(): void {
   this.logger.debug('Clearing all sponsorship requests.');
   this.requests.clear();
   this.logger.info('All sponsorship requests cleared.');
  }
}