All files / src/domains/crm/services account-contact.service.ts

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import {
  Injectable,
  Logger,
  BadRequestException,
  NotFoundException,
} from '@nestjs/common';
import { InjectModel } from '@nestjs/mongoose';
import { Model, Types, FilterQuery } from 'mongoose';
import { EventBusService } from '../../../platform/events/event-bus.service';
import {
  Account,
  Contact,
  ContactRelationship,
  AccountRelationship,
  SalesTerritory,
  TerritoryMember,
  SalesTeam,
  SalesTeamMember,
} from '../schemas/account-contact.schema';
import { CrmConfigService } from './crm-config.service';
 
@Injectable()
export class AccountContactService {
  private readonly logger = new Logger(AccountContactService.name);
 
  constructor(
    @InjectModel(Account.name) private readonly accountModel: Model<Account>,
    @InjectModel(Contact.name) private readonly contactModel: Model<Contact>,
    @InjectModel(ContactRelationship.name)
    private readonly contactRelModel: Model<ContactRelationship>,
    @InjectModel(AccountRelationship.name)
    private readonly accountRelModel: Model<AccountRelationship>,
    @InjectModel(SalesTerritory.name)
    private readonly territoryModel: Model<SalesTerritory>,
    @InjectModel(TerritoryMember.name)
    private readonly territoryMemberModel: Model<TerritoryMember>,
    @InjectModel(SalesTeam.name) private readonly teamModel: Model<SalesTeam>,
    @InjectModel(SalesTeamMember.name)
    private readonly teamMemberModel: Model<SalesTeamMember>,
    private readonly crmConfigService: CrmConfigService,
    private readonly eventBusService: EventBusService,
  ) {}
 
  // ════════════════════════════════════════════════════════════
  // ACCOUNTS
  // ════════════════════════════════════════════════════════════
 
  async createAccount(
    tenantId: Types.ObjectId,
    data: Partial<Account>,
  ): Promise<Account> {
    const accountCode = await this.crmConfigService.generateNextCode(
      tenantId,
      'account',
    );
 
    if (data.parentAccountId) {
      await this.validateNoCircularParent(
        tenantId,
        null,
        data.parentAccountId.toString(),
      );
    }
 
    const account = await this.accountModel.create({
      ...data,
      tenantId,
      accountCode,
    });
    await this.eventBusService.publish(
      'crm.account.created',
      { accountId: account._id },
      tenantId.toString(),
    );
    this.logger.log(`Created account ${accountCode} for tenant ${tenantId}`);
    return account;
  }
 
  async getAccountById(
    tenantId: Types.ObjectId,
    accountId: string,
  ): Promise<Account> {
    const account = await this.accountModel
      .findOne({ _id: accountId, tenantId, deletedAt: null })
      .exec();
    if (!account) throw new NotFoundException('Account not found');
    return account;
  }
 
  async updateAccount(
    tenantId: Types.ObjectId,
    accountId: string,
    updates: Partial<Account>,
  ): Promise<Account> {
    if (updates.parentAccountId) {
      await this.validateNoCircularParent(
        tenantId,
        accountId,
        updates.parentAccountId.toString(),
      );
    }
 
    const previousAccount = await this.getAccountById(tenantId, accountId);
    const previousStage = previousAccount.lifecycleStage;
 
    const account = await this.accountModel
      .findOneAndUpdate(
        { _id: accountId, tenantId },
        { $set: updates },
        { new: true },
      )
      .exec();
    if (!account) throw new NotFoundException('Account not found');
 
    if (previousStage !== account.lifecycleStage) {
      await this.eventBusService.publish(
        'crm.account.lifecycle_changed',
        {
          accountId: account._id,
          previousStage,
          newStage: account.lifecycleStage,
        },
        tenantId.toString(),
      );
    }
 
    return account;
  }
 
  async listAccounts(
    tenantId: Types.ObjectId,
    filters: {
      status?: string;
      type?: string;
      stage?: string;
      ownerId?: string;
      search?: string;
    },
    page = 1,
    limit = 25,
  ): Promise<{ data: Account[]; total: number; page: number; pages: number }> {
    const query: FilterQuery<Account> = { tenantId, deletedAt: null };
    if (filters.status) query.accountStatus = filters.status;
    if (filters.type) query.accountType = filters.type;
    if (filters.stage) query.lifecycleStage = filters.stage;
    if (filters.ownerId) query.ownerId = new Types.ObjectId(filters.ownerId);
    if (filters.search) {
      query.$or = [
        { accountName: { $regex: filters.search, $options: 'i' } },
        { accountCode: { $regex: filters.search, $options: 'i' } },
      ];
    }
 
    const [data, total] = await Promise.all([
      this.accountModel
        .find(query)
        .sort({ createdAt: -1 })
        .skip((page - 1) * limit)
        .limit(limit)
        .exec(),
      this.accountModel.countDocuments(query).exec(),
    ]);
    return { data, total, page, pages: Math.ceil(total / limit) };
  }
 
  async getAccountHierarchy(
    tenantId: Types.ObjectId,
    accountId: string,
  ): Promise<Account[]> {
    const hierarchy: Account[] = [];
    let currentId: string | undefined = accountId;
    const visited = new Set<string>();
 
    while (currentId && !visited.has(currentId)) {
      visited.add(currentId);
      const account = await this.accountModel
        .findOne({ _id: currentId, tenantId })
        .exec();
      if (!account) break;
      hierarchy.push(account);
      currentId = account.parentAccountId?.toString();
    }
 
    return hierarchy.reverse();
  }
 
  async getChildAccounts(
    tenantId: Types.ObjectId,
    accountId: string,
  ): Promise<Account[]> {
    return this.accountModel
      .find({
        tenantId,
        parentAccountId: new Types.ObjectId(accountId),
        deletedAt: null,
      })
      .exec();
  }
 
  private async validateNoCircularParent(
    tenantId: Types.ObjectId,
    currentId: string | null,
    parentId: string,
  ): Promise<void> {
    if (currentId === parentId) {
      throw new BadRequestException('An account cannot be its own parent');
    }
 
    const visited = new Set<string>();
    let checkId: string | undefined = parentId;
 
    while (checkId && !visited.has(checkId)) {
      visited.add(checkId);
      if (checkId === currentId) {
        throw new BadRequestException(
          'Circular parent-child relationship detected',
        );
      }
      const parent = await this.accountModel
        .findOne({ _id: checkId, tenantId })
        .exec();
      checkId = parent?.parentAccountId?.toString();
    }
  }
 
  // ════════════════════════════════════════════════════════════
  // CONTACTS
  // ════════════════════════════════════════════════════════════
 
  async createContact(
    tenantId: Types.ObjectId,
    data: Partial<Contact>,
  ): Promise<Contact> {
    const contactCode = await this.crmConfigService.generateNextCode(
      tenantId,
      'contact',
    );
    const emailNormalized = data.email?.trim().toLowerCase() || undefined;
    const contact = await this.contactModel.create({
      ...data,
      tenantId,
      contactCode,
      emailNormalized,
    });
    await this.eventBusService.publish(
      'crm.contact.created',
      { contactId: contact._id },
      tenantId.toString(),
    );
    return contact;
  }
 
  async getContactById(
    tenantId: Types.ObjectId,
    contactId: string,
  ): Promise<Contact> {
    const contact = await this.contactModel
      .findOne({ _id: contactId, tenantId, deletedAt: null })
      .exec();
    if (!contact) throw new NotFoundException('Contact not found');
    return contact;
  }
 
  async updateContact(
    tenantId: Types.ObjectId,
    contactId: string,
    updates: Partial<Contact>,
  ): Promise<Contact> {
    if (updates.email)
      updates.emailNormalized = updates.email.trim().toLowerCase();
    const contact = await this.contactModel
      .findOneAndUpdate(
        { _id: contactId, tenantId },
        { $set: updates },
        { new: true },
      )
      .exec();
    if (!contact) throw new NotFoundException('Contact not found');
    return contact;
  }
 
  async listContacts(
    tenantId: Types.ObjectId,
    filters: { accountId?: string; status?: string; search?: string },
    page = 1,
    limit = 25,
  ): Promise<{ data: Contact[]; total: number; page: number; pages: number }> {
    const query: FilterQuery<Contact> = { tenantId, deletedAt: null };
    if (filters.accountId)
      query.accountId = new Types.ObjectId(filters.accountId);
    if (filters.status) query.status = filters.status;
    if (filters.search) {
      query.$or = [
        { firstName: { $regex: filters.search, $options: 'i' } },
        { lastName: { $regex: filters.search, $options: 'i' } },
        { email: { $regex: filters.search, $options: 'i' } },
        { contactCode: { $regex: filters.search, $options: 'i' } },
      ];
    }
 
    const [data, total] = await Promise.all([
      this.contactModel
        .find(query)
        .sort({ createdAt: -1 })
        .skip((page - 1) * limit)
        .limit(limit)
        .exec(),
      this.contactModel.countDocuments(query).exec(),
    ]);
    return { data, total, page, pages: Math.ceil(total / limit) };
  }
 
  // ════════════════════════════════════════════════════════════
  // RELATIONSHIPS
  // ════════════════════════════════════════════════════════════
 
  async addContactRelationship(
    tenantId: Types.ObjectId,
    data: Partial<ContactRelationship>,
  ): Promise<ContactRelationship> {
    return this.contactRelModel.create({ ...data, tenantId });
  }
 
  async getContactRelationships(
    tenantId: Types.ObjectId,
    contactId: string,
  ): Promise<ContactRelationship[]> {
    return this.contactRelModel
      .find({
        tenantId,
        $or: [
          { sourceContactId: new Types.ObjectId(contactId) },
          { targetContactId: new Types.ObjectId(contactId) },
        ],
      })
      .exec();
  }
 
  async addAccountRelationship(
    tenantId: Types.ObjectId,
    data: Partial<AccountRelationship>,
  ): Promise<AccountRelationship> {
    return this.accountRelModel.create({ ...data, tenantId });
  }
 
  async getAccountRelationships(
    tenantId: Types.ObjectId,
    accountId: string,
  ): Promise<AccountRelationship[]> {
    return this.accountRelModel
      .find({
        tenantId,
        $or: [
          { sourceAccountId: new Types.ObjectId(accountId) },
          { targetAccountId: new Types.ObjectId(accountId) },
        ],
      })
      .exec();
  }
 
  // ════════════════════════════════════════════════════════════
  // TERRITORIES
  // ════════════════════════════════════════════════════════════
 
  async createTerritory(
    tenantId: Types.ObjectId,
    data: Partial<SalesTerritory>,
  ): Promise<SalesTerritory> {
    return this.territoryModel.create({ ...data, tenantId });
  }
 
  async listTerritories(tenantId: Types.ObjectId): Promise<SalesTerritory[]> {
    return this.territoryModel.find({ tenantId }).exec();
  }
 
  async addTerritoryMember(
    tenantId: Types.ObjectId,
    data: Partial<TerritoryMember>,
  ): Promise<TerritoryMember> {
    return this.territoryMemberModel.create({ ...data, tenantId });
  }
 
  async getTerritoryMembers(
    tenantId: Types.ObjectId,
    territoryId: string,
  ): Promise<TerritoryMember[]> {
    return this.territoryMemberModel
      .find({ tenantId, territoryId: new Types.ObjectId(territoryId) })
      .exec();
  }
 
  // ════════════════════════════════════════════════════════════
  // SALES TEAMS
  // ════════════════════════════════════════════════════════════
 
  async createTeam(
    tenantId: Types.ObjectId,
    data: Partial<SalesTeam>,
  ): Promise<SalesTeam> {
    return this.teamModel.create({ ...data, tenantId });
  }
 
  async listTeams(tenantId: Types.ObjectId): Promise<SalesTeam[]> {
    return this.teamModel.find({ tenantId }).exec();
  }
 
  async addTeamMember(
    tenantId: Types.ObjectId,
    data: Partial<SalesTeamMember>,
  ): Promise<SalesTeamMember> {
    return this.teamMemberModel.create({ ...data, tenantId });
  }
 
  async getTeamMembers(
    tenantId: Types.ObjectId,
    teamId: string,
  ): Promise<SalesTeamMember[]> {
    return this.teamMemberModel
      .find({ tenantId, teamId: new Types.ObjectId(teamId) })
      .exec();
  }
}