Proyectos de Subversion Iphone Microlearning - Inconcert

Rev

Rev 16 | Autoría | Comparar con el anterior | Ultima modificación | Ver Log | 

//
//  CapsuleDao.swift
//  twogetskills
//
//  Created by Efrain Yanez Recanatini on 2/21/22.
//

import SwiftUI
import SQLite3

class CapsuleDao {
    private var database = Environment(\.database).wrappedValue
    private let SQLITE_TRANSIENT = unsafeBitCast(-1, to: sqlite3_destructor_type.self)
    
    
    func getCountAll() -> Int {
        let db = database.open()
        var count = 0
        let query = "SELECT COUNT(*) AS total FROM \(Constants.TABLE_CAPSULE) LIMIT 1"

        var statement : OpaquePointer? = nil
        
        
        if (sqlite3_prepare(db, query, -1, &statement, nil) == SQLITE_OK) {
            if(sqlite3_step(statement) == SQLITE_ROW){
                count = Int(sqlite3_column_int(statement, 0))
                //print("\(count)")
            }
        }
        sqlite3_finalize(statement)
        return count
    }
        
    func getCountByTopicUuid(topicUuid: String) -> Int {
        let db = database.open()
        var count = 0
        let query = "SELECT COUNT(*) AS total FROM " +  Constants.TABLE_CAPSULE +
            " WHERE " +  Constants.TABLE_CAPSULE_FIELD_TOPIC_UUID + " = \(topicUuid) LIMIT 1"

        var statement : OpaquePointer? = nil
        
        
        if (sqlite3_prepare(db, query, -1, &statement, nil) == SQLITE_OK) {
            if(sqlite3_step(statement) == SQLITE_ROW){
                count = Int(sqlite3_column_int(statement, 0))
               // print("\(count)")
            }
        }
        sqlite3_finalize(statement)
        return count
    }
    
    func selectAll() -> [CapsuleModel] {
        let db = database.open()
        var records = [CapsuleModel]()
        var query = "SELECT "
        query = query + Constants.TABLE_CAPSULE_FIELD_UUID + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOPIC_UUID + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_NAME + "  ,  "
        query = query + Constants.TABLE_CAPSULE_FIELD_DESCRIPTION + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_IMAGE + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_POSITION + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS_ADD + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_COMMENTS + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_RATING + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_ADDED_ON + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_UPDATED_ON
        query = query + " FROM " + Constants.TABLE_CAPSULE
        query = query + " ORDER BY " + Constants.TABLE_CAPSULE_FIELD_NAME + " ;"
        var statement : OpaquePointer? = nil
        
        
        if (sqlite3_prepare_v2(db, query, -1, &statement, nil) == SQLITE_OK) {
            while (sqlite3_step(statement) == SQLITE_ROW) {
                var model = CapsuleModel()
                model.uuid = String(describing: String(cString: sqlite3_column_text(statement, 0)))
                model.topicUuid = String(describing: String(cString: sqlite3_column_text(statement, 1)))
                model.name = String(describing: String(cString: sqlite3_column_text(statement, 2)))
                model.description = String(describing: String(cString: sqlite3_column_text(statement, 3)))
                model.image = String(describing: String(cString: sqlite3_column_text(statement, 4)))
                model.position = Int(sqlite3_column_int(statement, 5))
                
                model.linkComments = String(describing: String(cString: sqlite3_column_text(statement, 6)))
                
                model.linkCommentAdd = String(describing: String(cString: sqlite3_column_text(statement, 7)))
                
                model.totalComments = Int(sqlite3_column_int(statement, 8))
                model.totalRating = Decimal(sqlite3_column_double(statement, 9))
                
                
                model.addedOn = String(describing: String(cString: sqlite3_column_text(statement, 10)))
                model.updatedOn  = String(describing: String(cString: sqlite3_column_text(statement, 11)))
                
                records.append(model)
            }
        }
        sqlite3_finalize(statement)
        return records
    }
        
    func selectAllByTopicUuid(topicUuid: String)-> [CapsuleModel] {
        let db = database.open()
        var records = [CapsuleModel]()
        var query = "SELECT "
        query = query + Constants.TABLE_CAPSULE_FIELD_UUID + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOPIC_UUID + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_NAME + "  ,  "
        query = query + Constants.TABLE_CAPSULE_FIELD_DESCRIPTION + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_IMAGE + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_POSITION + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS_ADD + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_COMMENTS + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_RATING + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_ADDED_ON + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_UPDATED_ON
        query = query + " FROM " + Constants.TABLE_CAPSULE
        query = query + " WHERE " + Constants.TABLE_CAPSULE_FIELD_TOPIC_UUID + " = '\(topicUuid)' "
        query = query + " ORDER BY " + Constants.TABLE_CAPSULE_FIELD_POSITION + " ;"
        var statement : OpaquePointer? = nil
        
        
        if (sqlite3_prepare_v2(db, query, -1, &statement, nil) == SQLITE_OK) {
            while (sqlite3_step(statement) == SQLITE_ROW) {
                var model = CapsuleModel()
                model.uuid = String(describing: String(cString: sqlite3_column_text(statement, 0)))
                model.topicUuid = String(describing: String(cString: sqlite3_column_text(statement, 1)))
                model.name = String(describing: String(cString: sqlite3_column_text(statement, 2)))
                model.description = String(describing: String(cString: sqlite3_column_text(statement, 3)))
                model.image = String(describing: String(cString: sqlite3_column_text(statement, 4)))
                model.position = Int(sqlite3_column_int(statement, 5))
                
                model.linkComments = String(describing: String(cString: sqlite3_column_text(statement, 6)))
                
                model.linkCommentAdd = String(describing: String(cString: sqlite3_column_text(statement, 7)))
                
                model.totalComments = Int(sqlite3_column_int(statement, 8))
                model.totalRating = Decimal(sqlite3_column_double(statement, 9))
                
                
                model.addedOn = String(describing: String(cString: sqlite3_column_text(statement, 10)))
                model.updatedOn  = String(describing: String(cString: sqlite3_column_text(statement, 11)))
                
                records.append(model)
            }
        }
        sqlite3_finalize(statement)
        return records
    }
    
    func selectLastPendingByUserUuid(userUuid: String)-> [CapsuleModel] {
        let db = database.open()
        var records = [CapsuleModel]()
        var query = "SELECT "
        query = query + Constants.TABLE_CAPSULE_FIELD_UUID + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOPIC_UUID + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_NAME + "  ,  "
        query = query + Constants.TABLE_CAPSULE_FIELD_DESCRIPTION + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_IMAGE + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_POSITION + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS_ADD + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_COMMENTS + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_RATING + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_ADDED_ON + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_UPDATED_ON
        query = query + " FROM " + Constants.TABLE_CAPSULE
        query = query + " WHERE " + Constants.TABLE_CAPSULE_FIELD_UUID + " NOT IN ("
        query = query + " SELECT " + Constants.TABLE_PROGRESS_FIELD_CAPSULE_UUID
        query = query + " FROM " + Constants.TABLE_PROGRESS
        query = query + " WHERE " + Constants.TABLE_PROGRESS_FIELD_TYPE + " = '" + Constants.PROGRESS_TYPE_CAPSULE + "'";
        query = query + " AND " + Constants.TABLE_PROGRESS_FIELD_USER_UUID + " ='\(userUuid)\' "
        query = query + ") ORDER BY " + Constants.TABLE_CAPSULE_FIELD_UPDATED_ON + " LIMIT 1 ;"
        
        //print("selectLastPendingByUserUuid query : \(query)")
        
        
        var statement : OpaquePointer? = nil
        
        
        if (sqlite3_prepare_v2(db, query, -1, &statement, nil) == SQLITE_OK) {
            while (sqlite3_step(statement) == SQLITE_ROW) {
                var model = CapsuleModel()
                model.uuid = String(describing: String(cString: sqlite3_column_text(statement, 0)))
                model.topicUuid = String(describing: String(cString: sqlite3_column_text(statement, 1)))
                model.name = String(describing: String(cString: sqlite3_column_text(statement, 2)))
                model.description = String(describing: String(cString: sqlite3_column_text(statement, 3)))
                model.image = String(describing: String(cString: sqlite3_column_text(statement, 4)))
                model.position = Int(sqlite3_column_int(statement, 5))
                
                model.linkComments = String(describing: String(cString: sqlite3_column_text(statement, 6)))
                
                model.linkCommentAdd = String(describing: String(cString: sqlite3_column_text(statement, 7)))
                
                model.totalComments = Int(sqlite3_column_int(statement, 8))
                model.totalRating = Decimal(sqlite3_column_double(statement, 9))
                
                
                model.addedOn = String(describing: String(cString: sqlite3_column_text(statement, 10)))
                model.updatedOn  = String(describing: String(cString: sqlite3_column_text(statement, 11)))
                
                records.append(model)
            }
        }
        sqlite3_finalize(statement)
        return records
    }
    
    func selectAllPendingByUserUuid(userUuid: String, search : String = "")-> [CapsuleModel] {
        let db = database.open()
        var records = [CapsuleModel]()
        var query = "SELECT "
        query = query + Constants.TABLE_CAPSULE_FIELD_UUID + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOPIC_UUID + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_NAME + "  ,  "
        query = query + Constants.TABLE_CAPSULE_FIELD_DESCRIPTION + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_IMAGE + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_POSITION + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS_ADD + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_COMMENTS + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_RATING + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_ADDED_ON + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_UPDATED_ON
        query = query + " FROM " + Constants.TABLE_CAPSULE
        query = query + " WHERE " + Constants.TABLE_CAPSULE_FIELD_UUID + " NOT IN ("
        query = query + " SELECT " + Constants.TABLE_PROGRESS_FIELD_CAPSULE_UUID
        query = query + " FROM " + Constants.TABLE_PROGRESS
        query = query + " WHERE " + Constants.TABLE_PROGRESS_FIELD_TYPE + " = '" + Constants.PROGRESS_TYPE_CAPSULE + "'";
        query = query + " AND " + Constants.TABLE_PROGRESS_FIELD_USER_UUID + " ='\(userUuid)\' "
        query = query + ") "
        
        if !search.isEmpty {
            query = query + " AND " + Constants.TABLE_CAPSULE_FIELD_NAME + " LIKE '%\(search)%' "
        }
        
        
        query = query + "ORDER BY " + Constants.TABLE_CAPSULE_FIELD_NAME + " ;"
        
        
        //print("selectAllPendingByUserUuid query : \(query)")
        
        var statement : OpaquePointer? = nil
        
        
        if (sqlite3_prepare_v2(db, query, -1, &statement, nil) == SQLITE_OK) {
            while (sqlite3_step(statement) == SQLITE_ROW) {
                var model = CapsuleModel()
                model.uuid = String(describing: String(cString: sqlite3_column_text(statement, 0)))
                model.topicUuid = String(describing: String(cString: sqlite3_column_text(statement, 1)))
                model.name = String(describing: String(cString: sqlite3_column_text(statement, 2)))
                model.description = String(describing: String(cString: sqlite3_column_text(statement, 3)))
                model.image = String(describing: String(cString: sqlite3_column_text(statement, 4)))
                model.position = Int(sqlite3_column_int(statement, 5))
                
                model.linkComments = String(describing: String(cString: sqlite3_column_text(statement, 6)))
                
                model.linkCommentAdd = String(describing: String(cString: sqlite3_column_text(statement, 7)))
                
                model.totalComments = Int(sqlite3_column_int(statement, 8))
                model.totalRating = Decimal(sqlite3_column_double(statement, 9))
                
                
                model.addedOn = String(describing: String(cString: sqlite3_column_text(statement, 10)))
                model.updatedOn  = String(describing: String(cString: sqlite3_column_text(statement, 11)))
                
                records.append(model)
            }
        }
        sqlite3_finalize(statement)
        return records
    }
    
    func selectAllInProgressByUserUuid(userUuid: String, search : String = "")-> [CapsuleModel] {
        let db = database.open()
        var records = [CapsuleModel]()
        var query = "SELECT "
        query = query + Constants.TABLE_CAPSULE_FIELD_UUID + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOPIC_UUID + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_NAME + "  ,  "
        query = query + Constants.TABLE_CAPSULE_FIELD_DESCRIPTION + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_IMAGE + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_POSITION + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS_ADD + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_COMMENTS + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_RATING + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_ADDED_ON + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_UPDATED_ON
        query = query + " FROM " + Constants.TABLE_CAPSULE
        query = query + " WHERE " + Constants.TABLE_CAPSULE_FIELD_UUID + " IN ("
        query = query + " SELECT " + Constants.TABLE_PROGRESS_FIELD_CAPSULE_UUID
        query = query + " FROM " + Constants.TABLE_PROGRESS
        query = query + " WHERE " + Constants.TABLE_PROGRESS_FIELD_TYPE + " = '" + Constants.PROGRESS_TYPE_CAPSULE + "'";
        query = query + " AND " + Constants.TABLE_PROGRESS_FIELD_USER_UUID + " = '\(userUuid)\' "
        query = query + " AND " + Constants.TABLE_PROGRESS_FIELD_PROGRESS + " < 0 "
        query = query + " AND " + Constants.TABLE_PROGRESS_FIELD_COMPLETED + " = 0 "
        query = query + ") "
        
        if !search.isEmpty {
            query = query + " AND " + Constants.TABLE_CAPSULE_FIELD_NAME + " LIKE '%\(search)%' "
        }
        
        
        query = query + "ORDER BY " + Constants.TABLE_CAPSULE_FIELD_NAME + " ;"
        
        //print("selectAllInProgressByUserUuid query : \(query)")
        
        var statement : OpaquePointer? = nil
        
        
        if (sqlite3_prepare_v2(db, query, -1, &statement, nil) == SQLITE_OK) {
            while (sqlite3_step(statement) == SQLITE_ROW) {
                var model = CapsuleModel()
                model.uuid = String(describing: String(cString: sqlite3_column_text(statement, 0)))
                model.topicUuid = String(describing: String(cString: sqlite3_column_text(statement, 1)))
                model.name = String(describing: String(cString: sqlite3_column_text(statement, 2)))
                model.description = String(describing: String(cString: sqlite3_column_text(statement, 3)))
                model.image = String(describing: String(cString: sqlite3_column_text(statement, 4)))
                model.position = Int(sqlite3_column_int(statement, 5))
                
                model.linkComments = String(describing: String(cString: sqlite3_column_text(statement, 6)))
                
                model.linkCommentAdd = String(describing: String(cString: sqlite3_column_text(statement, 7)))
                
                model.totalComments = Int(sqlite3_column_int(statement, 8))
                model.totalRating = Decimal(sqlite3_column_double(statement, 9))
                
                
                model.addedOn = String(describing: String(cString: sqlite3_column_text(statement, 10)))
                model.updatedOn  = String(describing: String(cString: sqlite3_column_text(statement, 11)))
                
                records.append(model)
            }
        }
        sqlite3_finalize(statement)
        return records
    }
    
    func selectAllCompletedByUserUuid(userUuid: String, search : String = "")-> [CapsuleModel] {
        let db = database.open()
        var records = [CapsuleModel]()
        var query = "SELECT "
        query = query + Constants.TABLE_CAPSULE_FIELD_UUID + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOPIC_UUID + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_NAME + "  ,  "
        query = query + Constants.TABLE_CAPSULE_FIELD_DESCRIPTION + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_IMAGE + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_POSITION + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS_ADD + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_COMMENTS + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_RATING + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_ADDED_ON + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_UPDATED_ON
        query = query + " FROM " + Constants.TABLE_CAPSULE
        query = query + " WHERE " + Constants.TABLE_CAPSULE_FIELD_UUID + " IN ("
        query = query + " SELECT " + Constants.TABLE_PROGRESS_FIELD_CAPSULE_UUID
        query = query + " FROM " + Constants.TABLE_PROGRESS
        query = query + " WHERE " + Constants.TABLE_PROGRESS_FIELD_TYPE + " = '" + Constants.PROGRESS_TYPE_CAPSULE + "'";
        query = query + " AND " + Constants.TABLE_PROGRESS_FIELD_USER_UUID + " = '\(userUuid)\' "
        query = query + " AND " + Constants.TABLE_PROGRESS_FIELD_PROGRESS + " >= 0 "
        query = query + " AND " + Constants.TABLE_PROGRESS_FIELD_COMPLETED + " = 1 "
        query = query + ") "
        
        if !search.isEmpty {
            query = query + " AND " + Constants.TABLE_CAPSULE_FIELD_NAME + " LIKE '%\(search)%' "
        }
        
        
        query = query + "ORDER BY " + Constants.TABLE_CAPSULE_FIELD_NAME + " ;"
        
        //print("selectAllCompletedByUserUuid query : \(query)")
        
        
        var statement : OpaquePointer? = nil
        
        
        if (sqlite3_prepare_v2(db, query, -1, &statement, nil) == SQLITE_OK) {
            while (sqlite3_step(statement) == SQLITE_ROW) {
                var model = CapsuleModel()
                model.uuid = String(describing: String(cString: sqlite3_column_text(statement, 0)))
                model.topicUuid = String(describing: String(cString: sqlite3_column_text(statement, 1)))
                model.name = String(describing: String(cString: sqlite3_column_text(statement, 2)))
                model.description = String(describing: String(cString: sqlite3_column_text(statement, 3)))
                model.image = String(describing: String(cString: sqlite3_column_text(statement, 4)))
                model.position = Int(sqlite3_column_int(statement, 5))
                
                model.linkComments = String(describing: String(cString: sqlite3_column_text(statement, 6)))
                
                model.linkCommentAdd = String(describing: String(cString: sqlite3_column_text(statement, 7)))
                
                model.totalComments = Int(sqlite3_column_int(statement, 8))
                model.totalRating = Decimal(sqlite3_column_double(statement, 9))
                
                
                model.addedOn = String(describing: String(cString: sqlite3_column_text(statement, 10)))
                model.updatedOn  = String(describing: String(cString: sqlite3_column_text(statement, 11)))
                
                records.append(model)
            }
        }
        sqlite3_finalize(statement)
        return records
    }
    
    func selectLastInProgress(userUuid: String)-> CapsuleModel {
        let db = database.open()
        var model = CapsuleModel()
        var query = "SELECT " + Constants.TABLE_CAPSULE_FIELD_UUID + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOPIC_UUID + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_NAME + "  ,  "
        query = query + Constants.TABLE_CAPSULE_FIELD_DESCRIPTION + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_IMAGE + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_POSITION + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS_ADD + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_COMMENTS + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_RATING + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_ADDED_ON + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_UPDATED_ON
        query = query + " FROM " + Constants.TABLE_CAPSULE
        query = query + " WHERE " + Constants.TABLE_CAPSULE_FIELD_UUID + "  IN ("
        query = query + " SELECT " + Constants.TABLE_PROGRESS_FIELD_CAPSULE_UUID
        query = query + " FROM " + Constants.TABLE_PROGRESS
        query = query + " WHERE " + Constants.TABLE_PROGRESS_FIELD_TYPE + " = '" + Constants.PROGRESS_TYPE_CAPSULE + "'";
        query = query + " AND " + Constants.TABLE_PROGRESS_FIELD_PROGRESS + "  <= 100 "
        query = query + " AND " + Constants.TABLE_PROGRESS_FIELD_COMPLETED + " = 0 " 
        query = query + " AND " + Constants.TABLE_PROGRESS_FIELD_USER_UUID + " ='\(userUuid)\' "
        query = query + " ORDER BY " + Constants.TABLE_PROGRESS_FIELD_UPDATED_ON + " DESC LIMIT 1" 
        query = query + ") "
        
        var statement : OpaquePointer? = nil
        
        if (sqlite3_prepare_v2(db, query, -1, &statement, nil) == SQLITE_OK) {
            if (sqlite3_step(statement) == SQLITE_ROW) {
                model.uuid = String(describing: String(cString: sqlite3_column_text(statement, 0)))
                model.topicUuid = String(describing: String(cString: sqlite3_column_text(statement, 1)))
                model.name = String(describing: String(cString: sqlite3_column_text(statement, 2)))
                model.description = String(describing: String(cString: sqlite3_column_text(statement, 3)))
                model.image = String(describing: String(cString: sqlite3_column_text(statement, 4)))
                model.position = Int(sqlite3_column_int(statement, 5))
                
                
                model.linkComments = String(describing: String(cString: sqlite3_column_text(statement, 6)))
                model.linkCommentAdd = String(describing: String(cString: sqlite3_column_text(statement, 7)))
                
                model.totalComments = Int(sqlite3_column_int(statement, 8))
                model.totalRating = Decimal(sqlite3_column_double(statement, 9))
                
                model.addedOn = String(describing: String(cString: sqlite3_column_text(statement, 10)))
                model.updatedOn  = String(describing: String(cString: sqlite3_column_text(statement, 11)))
                
            }
        }
        sqlite3_finalize(statement)
        return model
    }
    
    /*
     SELECT * FROM tb_capsules AS c
     WHERE uuid NOT IN (SELECT capsule_uuid FROM tb_progress WHERE type = 'c' AND user_uuid = '4cf9fb4b-0190-4bb4-9369-15eb68e9cace')
     ORDER BY name

     SELECT * FROM tb_capsules AS c
     WHERE uuid IN (SELECT capsule_uuid FROM tb_progress WHERE type = 'c' AND user_uuid = '4cf9fb4b-0190-4bb4-9369-15eb68e9cace' AND completed = 0)
     ORDER BY name
     */

    func selectByUuid(uuid: String)-> CapsuleModel {
        let db = database.open()
        var model = CapsuleModel()
        var query = "SELECT " + Constants.TABLE_CAPSULE_FIELD_UUID + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOPIC_UUID + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_NAME + "  ,  "
        query = query + Constants.TABLE_CAPSULE_FIELD_DESCRIPTION + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_IMAGE + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_POSITION + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS_ADD + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_COMMENTS + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_RATING + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_ADDED_ON + " , "
        query = query + Constants.TABLE_CAPSULE_FIELD_UPDATED_ON
        query = query + " FROM " + Constants.TABLE_CAPSULE
        query = query + " WHERE " + Constants.TABLE_CAPSULE_FIELD_UUID + " = '\(uuid)'  LIMIT 1;"
        var statement : OpaquePointer? = nil
        
        if (sqlite3_prepare_v2(db, query, -1, &statement, nil) == SQLITE_OK) {
            if (sqlite3_step(statement) == SQLITE_ROW) {
                model.uuid = String(describing: String(cString: sqlite3_column_text(statement, 0)))
                model.topicUuid = String(describing: String(cString: sqlite3_column_text(statement, 1)))
                model.name = String(describing: String(cString: sqlite3_column_text(statement, 2)))
                model.description = String(describing: String(cString: sqlite3_column_text(statement, 3)))
                model.image = String(describing: String(cString: sqlite3_column_text(statement, 4)))
                model.position = Int(sqlite3_column_int(statement, 5))
                
                
                model.linkComments = String(describing: String(cString: sqlite3_column_text(statement, 6)))
                model.linkCommentAdd = String(describing: String(cString: sqlite3_column_text(statement, 7)))
                
                model.totalComments = Int(sqlite3_column_int(statement, 8))
                model.totalRating = Decimal(sqlite3_column_double(statement, 9))
                
                model.addedOn = String(describing: String(cString: sqlite3_column_text(statement, 10)))
                model.updatedOn  = String(describing: String(cString: sqlite3_column_text(statement, 11)))
                
            }
        } else {
           
        }
        sqlite3_finalize(statement)
        return model
    }
        
    func insert(capsule: CapsuleModel) {
        let db = database.open()
        var query = "INSERT INTO " + Constants.TABLE_CAPSULE + " ( "
        query = query + Constants.TABLE_CAPSULE_FIELD_UUID + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOPIC_UUID + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_NAME + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_DESCRIPTION + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_IMAGE + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_POSITION + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS_ADD + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_COMMENTS + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_RATING + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_ADDED_ON + ", "
        query = query + Constants.TABLE_CAPSULE_FIELD_UPDATED_ON
        query = query +  " ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? ,?);"
        var statement : OpaquePointer?
        
           
        if (sqlite3_prepare_v2(db, query, -1, &statement, nil) == SQLITE_OK) {
                   
            sqlite3_bind_text(statement, 1, capsule.uuid, -1, SQLITE_TRANSIENT)
            sqlite3_bind_text(statement, 2, capsule.topicUuid, -1, SQLITE_TRANSIENT)
            sqlite3_bind_text(statement, 3, capsule.name , -1, SQLITE_TRANSIENT)
            sqlite3_bind_text(statement, 4, capsule.description , -1, SQLITE_TRANSIENT)
            sqlite3_bind_text(statement, 5, capsule.image , -1, SQLITE_TRANSIENT)
            sqlite3_bind_int(statement, 6, Int32(capsule.position))
            sqlite3_bind_text(statement, 7, capsule.linkComments , -1, SQLITE_TRANSIENT)
            sqlite3_bind_text(statement, 8, capsule.linkCommentAdd , -1, SQLITE_TRANSIENT)
            sqlite3_bind_int(statement, 9, Int32(capsule.totalComments))
            sqlite3_bind_double(statement, 10,Double("\(capsule.totalRating)") ?? 0)
            sqlite3_bind_text(statement, 11, capsule.addedOn , -1, SQLITE_TRANSIENT)
            sqlite3_bind_text(statement, 12, capsule.updatedOn , -1, SQLITE_TRANSIENT)

           if (sqlite3_step(statement) != SQLITE_DONE) {
                print("No se pudo insertar un registro en la tabla: \(Constants.TABLE_CAPSULE)")
            
               
           }
        } else {
            print("Fallo la prepración de insertar un registro en la tabla: \(Constants.TABLE_CAPSULE)")
            
           
        }
       
        sqlite3_finalize(statement)
    }

    func update(capsule : CapsuleModel) {
        let db = database.open()
        var query = "UPDATE " + Constants.TABLE_CAPSULE
        query = query + " SET " + Constants.TABLE_CAPSULE_FIELD_NAME + " = '\(capsule.name)', "
        query = query + Constants.TABLE_CAPSULE_FIELD_DESCRIPTION + " = '\(capsule.description)', "
        query = query + Constants.TABLE_CAPSULE_FIELD_IMAGE + " = '\(capsule.image)', "
        query = query + Constants.TABLE_CAPSULE_FIELD_POSITION + " = '\(capsule.position)', "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS + " = '\(capsule.linkComments)', "
        query = query + Constants.TABLE_CAPSULE_FIELD_LINK_COMMENTS_ADD + " = '\(capsule.linkCommentAdd)',"
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_COMMENTS + " = '\(capsule.totalComments)', "
        query = query + Constants.TABLE_CAPSULE_FIELD_TOTAL_RATING + " = '\(capsule.totalRating)', "
        query = query + Constants.TABLE_CAPSULE_FIELD_ADDED_ON + " = '\(capsule.addedOn)', "
        query = query + Constants.TABLE_CAPSULE_FIELD_UPDATED_ON + " = '\(capsule.updatedOn)' "
        query = query + " WHERE " + Constants.TABLE_CAPSULE_FIELD_UUID + " = '\(capsule.uuid)' ;"
        var statement : OpaquePointer? = nil
        if (sqlite3_prepare_v2(db, query, -1, &statement, nil) == SQLITE_OK) {
            if (sqlite3_step(statement) != SQLITE_DONE) {
                print("No se pudo actualizar un registro en la tabla: \(Constants.TABLE_CAPSULE)")
           
               
            }
        } else {
            print("Fallo la preparación para actualizar un registro en la tabla: \(Constants.TABLE_CAPSULE)")
            
           
        }
        sqlite3_finalize(statement)
    }
    


    func remove(uuid: String) {
        let db = database.open()
        let query = "DELETE FROM " + Constants.TABLE_CAPSULE +
            " WHERE " + Constants.TABLE_CAPSULE_FIELD_UUID + " = " + "\(uuid) ;"
        var statement : OpaquePointer? = nil
        if (sqlite3_prepare_v2(db, query, -1, &statement, nil) == SQLITE_OK) {
            if (sqlite3_step(statement) != SQLITE_DONE) {
                print("No se pudo borrar el registro con el uuid: \(uuid) en la tabla: \(Constants.TABLE_CAPSULE)")
                
               
            }
        } else {
            print("Fallo la preparación de borrar un registro con el uuid: \(uuid) en la tabla: \(Constants.TABLE_CAPSULE)")
            
           
        }
        sqlite3_finalize(statement)
    }

    func removeAll() {
        let db = database.open()
        let query = "DELETE FROM " + Constants.TABLE_CAPSULE + ";"
        var statement : OpaquePointer? = nil
        if (sqlite3_prepare_v2(db, query, -1, &statement, nil) == SQLITE_OK) {
            if (sqlite3_step(statement) != SQLITE_DONE) {
                print("No se pudo borrar todos los registros en la tabla: \(Constants.TABLE_CAPSULE)")
                
               
            }
        } else {
            print("No se pudo preparar el borrar todos los registros en la tabla: \(Constants.TABLE_CAPSULE)")
            
           
        }
        sqlite3_finalize(statement)
    }
    
}