import { sequelize } from '@config/database';

// Import all models
import { User } from './User';
import { WorkflowRequest } from './WorkflowRequest';
import { ApprovalLevel } from './ApprovalLevel';
import { Participant } from './Participant';
import { Document } from './Document';
import { Subscription } from './Subscription';
import { Activity } from './Activity';
import { WorkNote } from './WorkNote';
import { WorkNoteAttachment } from './WorkNoteAttachment';

// Define associations
const defineAssociations = () => {
  // User associations
  User.hasMany(WorkflowRequest, {
    as: 'initiatedRequests',
    foreignKey: 'initiatorId',
    sourceKey: 'userId'
  });

  User.hasMany(ApprovalLevel, {
    as: 'approvalLevels',
    foreignKey: 'approverId',
    sourceKey: 'userId'
  });

  User.hasMany(Participant, {
    as: 'participations',
    foreignKey: 'userId',
    sourceKey: 'userId'
  });

  User.hasMany(Document, {
    as: 'uploadedDocuments',
    foreignKey: 'uploadedBy',
    sourceKey: 'userId'
  });

  // WorkflowRequest associations
  WorkflowRequest.hasMany(ApprovalLevel, {
    as: 'approvalLevels',
    foreignKey: 'requestId',
    sourceKey: 'requestId'
  });

  WorkflowRequest.hasMany(Participant, {
    as: 'participants',
    foreignKey: 'requestId',
    sourceKey: 'requestId'
  });

  WorkflowRequest.hasMany(Document, {
    as: 'documents',
    foreignKey: 'requestId',
    sourceKey: 'requestId'
  });

  // Note: belongsTo associations are defined in individual model files to avoid duplicate alias conflicts
  // Only hasMany associations from WorkflowRequest are defined here since they're one-way
};

// Initialize associations
defineAssociations();

// Export models and sequelize instance
export {
  sequelize,
  User,
  WorkflowRequest,
  ApprovalLevel,
  Participant,
  Document,
  Subscription,
  Activity,
  WorkNote,
  WorkNoteAttachment
};

// Export default sequelize instance
export default sequelize;