Proyectos de Subversion Iphone Microlearning

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

import UIKit
import SQLite3

class CapsuleDao {

    let SQLITE_TRANSIENT = unsafeBitCast(-1, to: sqlite3_destructor_type.self)
    var db = Database().open()
    
    
    func getCountAll() -> Int {
        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 {
        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 selectAllByTopicUuid(topicUuid: String)-> [CapsuleModel] {
        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 + " 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))
                
                records.append(model)
            }
        }
        sqlite3_finalize(statement)
        return records
    }

    func selectByUuid(uuid: String)-> CapsuleModel {
        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 + " 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))
                
            }
        }
        sqlite3_finalize(statement)
        return model
    }
        
    func insert(capsule: CapsuleModel) {
        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  + " ) 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))

           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) {
        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 + " 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 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 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)
    }
    
}