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",
              
            ],
          
        
          
          
          
          

          
            "subscriptions": [
              
                "currency",
              
                "payment_provider",
              
                "provider_customer_ref",
              
                "provider_subscription_ref",
              
            ],
          
        
          
          

          
            "feature_flags": [
              
                "key",
              
                "name",
              
                "description",
              
            ],
          
        
          
          

          
            "matters": [
              
                "title",
              
                "jurisdiction",
              
                "court_name",
              
                "case_number",
              
                "notes",
              
            ],
          
        
          
          

          
            "matter_parties": [
              
                "display_name",
              
                "organization_name",
              
                "email",
              
                "phone",
              
                "address",
              
                "notes",
              
            ],
          
        
          
          

          
            "files": [
              
                "file_name",
              
                "content_type",
              
                "file_extension",
              
                "storage_provider",
              
                "storage_key",
              
                "checksum_sha256",
              
                "tags",
              
            ],
          
        
          
          

          
            "file_extractions": [
              
                "language",
              
                "result_text",
              
                "error_message",
              
            ],
          
        
          
          

          
            "assistant_threads": [
              
                "title",
              
            ],
          
        
          
          

          
            "assistant_messages": [
              
                "content",
              
                "model_name",
              
            ],
          
        
          
          

          
            "ai_jobs": [
              
                "input_summary",
              
                "output_summary",
              
                "error_message",
              
            ],
          
        
          
          

          
            "legal_templates": [
              
                "template_name",
              
                "jurisdiction",
              
                "description",
              
                "template_body",
              
            ],
          
        
          
          

          
            "template_fields": [
              
                "field_key",
              
                "label",
              
                "default_value",
              
                "help_text",
              
            ],
          
        
          
          

          
            "generated_documents": [
              
                "document_title",
              
                "content",
              
            ],
          
        
          
          

          
            "document_versions": [
              
                "content_snapshot",
              
            ],
          
        
          
          

          
            "research_queries": [
              
                "query_text",
              
                "jurisdiction",
              
                "filters_json",
              
            ],
          
        
          
          

          
            "legal_sources": [
              
                "jurisdiction",
              
                "title",
              
                "citation",
              
                "court",
              
                "full_text",
              
                "summary",
              
                "source_url",
              
            ],
          
        
          
          

          
            "research_results": [
              
                "snippet",
              
                "rule_statement",
              
            ],
          
        
          
          

          
            "citator_checks": [
              
                "analysis",
              
                "conflicts_summary",
              
            ],
          
        
          
          

          
            "mock_trials": [
              
                "session_title",
              
                "scenario_brief",
              
            ],
          
        
          
          

          
            "mock_trial_roles": [
              
                "display_name",
              
                "instructions",
              
            ],
          
        
          
          

          
            "mock_trial_turns": [
              
                "content",
              
            ],
          
        
          
          

          
            "transcription_jobs": [
              
                "source_language",
              
                "target_language",
              
                "transcript_text",
              
                "summary_text",
              
                "error_message",
              
            ],
          
        
          
          

          
            "medical_chronology_reports": [
              
                "report_title",
              
                "overview",
              
            ],
          
        
          
          

          
            "medical_events": [
              
                "provider_name",
              
                "facility_name",
              
                "diagnoses",
              
                "icd10_codes",
              
                "procedures",
              
                "medications",
              
                "notes",
              
            ],
          
        
          
          

          
            "causation_analyses": [
              
                "analysis_title",
              
                "theory_of_causation",
              
                "supporting_facts",
              
                "weaknesses_and_gaps",
              
            ],
          
        
          
          

          
            "audit_events": [
              
                "event_name",
              
                "event_details",
              
                "ip_address",
              
                "user_agent",
              
            ],
          
        
      };
      const columnsInt = {
        
          
          
          
        
          
          
          
          
          
            "subscriptions": [
              
                "price_amount",
              
            ],
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
            "files": [
              
                "size_bytes",
              
            ],
          
        
          
          
          
            "file_extractions": [
              
                "page_count",
              
            ],
          
        
          
          
          
        
          
          
          
            "assistant_messages": [
              
                "prompt_tokens",
              
                "completion_tokens",
              
            ],
          
        
          
          
          
            "ai_jobs": [
              
                "cost_usd",
              
            ],
          
        
          
          
          
        
          
          
          
            "template_fields": [
              
                "sort_order",
              
            ],
          
        
          
          
          
        
          
          
          
            "document_versions": [
              
                "version_number",
              
            ],
          
        
          
          
          
        
          
          
          
        
          
          
          
            "research_results": [
              
                "relevance_score",
              
            ],
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
            "transcription_jobs": [
              
                "confidence_avg",
              
            ],
          
        
          
          
          
        
          
          
          
        
          
          
          
        
          
          
          
        
      };

      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;
    }
  }
}