const db = require('../db/models');
const ValidationError = require('./notifications/errors/validation');

const Sequelize = db.Sequelize;
const Op = Sequelize.Op;

/**
 * @param {string} permission
 * @param {object} currentUser
 */
async function checkPermissions(permission, currentUser) {

  if (!currentUser) {
    throw new ValidationError('auth.unauthorized');
  }

  const userPermission = currentUser.custom_permissions.find(
    (cp) => cp.name === permission,
  );

  if (userPermission) {
    return true;
  }

  try {
    if (!currentUser.app_role) {
      throw new ValidationError('auth.forbidden');
    }

    const permissions = await currentUser.app_role.getPermissions();

    return !!permissions.find((p) => p.name === permission);
  } catch (e) {
    throw e;
  }
}

module.exports = class SearchService {
  static async search(searchQuery, currentUser ) {
    try {
      if (!searchQuery) {
        throw new ValidationError('iam.errors.searchQueryRequired');
      }
      const tableColumns = {
        
          
          

          
            "users": [
              
                "firstName",
              
                "lastName",
              
                "phoneNumber",
              
                "email",
              
            ],
          
        
          
          
          
          

          
            "document_types": [
              
                "name",
              
                "code",
              
                "description",
              
            ],
          
        
          
          

          
            "standards": [
              
                "name",
              
                "short_name",
              
                "version",
              
                "publisher",
              
                "scope_notes",
              
            ],
          
        
          
          

          
            "clauses": [
              
                "clause_code",
              
                "title",
              
                "text_excerpt",
              
                "guidance_notes",
              
            ],
          
        
          
          

          
            "document_templates": [
              
                "template_name",
              
                "template_code",
              
                "purpose",
              
                "template_body",
              
            ],
          
        
          
          

          
            "documents": [
              
                "title",
              
                "document_number",
              
                "current_revision",
              
                "summary",
              
                "content",
              
            ],
          
        
          
          

          
            "document_versions": [
              
                "revision",
              
                "change_summary",
              
                "version_content",
              
                "hash_checksum",
              
            ],
          
        
          
          

          
            "change_requests": [
              
                "change_number",
              
                "reason_for_change",
              
                "impact_assessment",
              
            ],
          
        
          
          

          
            "approval_workflows": [
              
                "name",
              
                "instructions",
              
            ],
          
        
          
          

          
            "approval_steps": [
              
                "step_name",
              
            ],
          
        
          
          

          
            "approval_tasks": [
              
                "subject_reference",
              
                "decision_comment",
              
            ],
          
        
          
          

          
            "esignature_events": [
              
                "subject_reference",
              
                "meaning_of_signature",
              
                "authentication_method",
              
                "ip_address",
              
                "user_agent",
              
            ],
          
        
          
          

          
            "training_courses": [
              
                "course_name",
              
                "course_code",
              
                "description",
              
            ],
          
        
          
          

          
            "training_assignments": [
              
                "trainer_notes",
              
            ],
          
        
          
          

          
            "products": [
              
                "product_name",
              
                "product_code",
              
                "intended_use",
              
                "udi_di",
              
            ],
          
        
          
          

          
            "suppliers": [
              
                "supplier_name",
              
                "supplier_code",
              
                "contact_name",
              
                "contact_email",
              
                "contact_phone",
              
                "address",
              
            ],
          
        
          
          

          
            "batches": [
              
                "batch_number",
              
                "notes",
              
            ],
          
        
          
          

          
            "certificates_of_analysis": [
              
                "coa_number",
              
                "summary",
              
            ],
          
        
          
          

          
            "device_master_records": [
              
                "dmr_number",
              
                "title",
              
                "notes",
              
            ],
          
        
          
          

          
            "risk_assessments": [
              
                "risk_file_name",
              
                "risk_file_code",
              
                "scope",
              
            ],
          
        
          
          

          
            "risk_items": [
              
                "hazard_id",
              
                "hazard_description",
              
                "sequence_of_events",
              
                "risk_controls",
              
                "verification_of_controls",
              
            ],
          
        
          
          

          
            "capas": [
              
                "capa_number",
              
                "problem_statement",
              
                "root_cause",
              
                "corrective_actions",
              
                "preventive_actions",
              
            ],
          
        
          
          

          
            "nonconformances": [
              
                "nc_number",
              
                "description",
              
            ],
          
        
          
          

          
            "complaints": [
              
                "complaint_number",
              
                "reporter_name",
              
                "reporter_contact",
              
                "complaint_description",
              
            ],
          
        
          
          

          
            "audits": [
              
                "audit_number",
              
                "scope",
              
                "summary",
              
            ],
          
        
          
          

          
            "audit_findings": [
              
                "finding_number",
              
                "description",
              
                "objective_evidence",
              
            ],
          
        
          
          

          
            "management_reviews": [
              
                "review_title",
              
                "agenda",
              
                "minutes",
              
            ],
          
        
          
          

          
            "regulatory_submissions": [
              
                "submission_name",
              
                "notes",
              
            ],
          
        
          
          

          
            "audit_logs": [
              
                "subject_reference",
              
                "details",
              
                "ip_address",
              
                "user_agent",
              
            ],
          
        
      };
      const columnsInt = {
        
          
          
          
        
          
          
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
            "approval_workflows": [
              
                "min_approvals",
              
            ],
          
        
          
          
          
            "approval_steps": [
              
                "step_order",
              
                "sla_days",
              
            ],
          
        
          
          
          
        
          
          
          
        
          
          
          
            "training_courses": [
              
                "duration_hours",
              
            ],
          
        
          
          
          
            "training_assignments": [
              
                "score",
              
            ],
          
        
          
          
          
        
          
          
          
        
          
          
          
            "batches": [
              
                "quantity_planned",
              
                "quantity_produced",
              
                "quantity_released",
              
            ],
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
        
      };

      let allFoundRecords = [];

      for (const tableName in tableColumns) {
        if (tableColumns.hasOwnProperty(tableName)) {
          const attributesToSearch = tableColumns[tableName];
          const attributesIntToSearch = columnsInt[tableName] || [];
          const whereCondition = {
            [Op.or]: [
              ...attributesToSearch.map(attribute => ({
                [attribute]: {
                  [Op.iLike] : `%${searchQuery}%`,
                },
              })),
              ...attributesIntToSearch.map(attribute => (
                Sequelize.where(
                  Sequelize.cast(Sequelize.col(`${tableName}.${attribute}`), 'varchar'),
                  { [Op.iLike]: `%${searchQuery}%` }
                )
              )),
            ],
          };

          

          const hasPermission = await checkPermissions(`READ_${tableName.toUpperCase()}`, currentUser);
          if (!hasPermission) {
            continue;
          }

          const foundRecords = await db[tableName].findAll({
            where: whereCondition,
            attributes: [...tableColumns[tableName], 'id', ...attributesIntToSearch],
          });
      
          const modifiedRecords = foundRecords.map((record) => {
            const matchAttribute = [];
 
            for (const attribute of attributesToSearch) {
              if (record[attribute]?.toLowerCase()?.includes(searchQuery.toLowerCase())) {
                matchAttribute.push(attribute);
              }
            }

            for (const attribute of attributesIntToSearch) {
              const castedValue = String(record[attribute]);
              if (castedValue && castedValue.toLowerCase().includes(searchQuery.toLowerCase())) {
                matchAttribute.push(attribute);
              }
            }
      
            return {
              ...record.get(),
              matchAttribute,
              tableName,
            };
          });

          allFoundRecords = allFoundRecords.concat(modifiedRecords);
        }
      }

      return allFoundRecords;
    } catch (error) {
      throw error;
    }
  }
}