106 lines
2.9 KiB
C#
106 lines
2.9 KiB
C#
using Dapper;
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using System;
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using System.Collections.Generic;
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using System.Configuration;
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using System.Data;
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using System.Data.SQLite;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using GreatHomeChildcare.Models;
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namespace GreatHomeChildcare
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{
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class SqliteDataAccess
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{
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#region student
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#endregion
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#region guardian
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// ***************** Read *****************
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/* Gets a Guardian by a distinct pin number. Distinctness enforced elsewhere.
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* INPUT: integer pin#
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* OUTPUT: Guardian object
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*/
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internal Guardian GetGuardianByPin(int guardian_pin_in)
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{
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using (IDbConnection cnn = new SQLiteConnection(LoadConnectionString()))
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{
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string strQuery = "SELECT * FROM Guardians WHERE PinNumber = @pin_in";
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Guardian guardian = cnn.Query<Guardian>(strQuery, new { pin_in = guardian_pin_in }).SingleOrDefault();
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return guardian;
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}
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}
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#endregion
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#region authorized_guardians
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// ***************** Read *****************
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/* Gets a list of all children per a specific guardian.
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* INPUT: Guardian
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* OUTPUT: List of Child object.
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*/
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internal List<Child> GetChildrenByGuardian(Guardian guardian_in)
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{
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//TODO: Remove once valid login check is implemented.
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if (guardian_in == null)
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return null;
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using (IDbConnection cnn = new SQLiteConnection(LoadConnectionString()))
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{
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string strQuery = @"
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SELECT
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Children.id,
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Children.FirstName,
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Children.LastName,
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DOB,
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address,
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race,
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gender,
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photo
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FROM Children
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INNER JOIN Authorized_Guardians on Children.ID = Authorized_Guardians.child_id
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INNER JOIN Guardians on Authorized_Guardians.guardian_id = Guardians.id
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WHERE Guardians.id = @id
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";
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var output = cnn.Query<Child>(strQuery,guardian_in);
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return output.ToList();
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}
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}
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#endregion
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#region attendance
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#endregion
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#region misc
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#endregion
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/* Checks to see if this is the first time the application has run.
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* by counting the number of guardians in the guardian table.
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*/
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internal bool isFirstTimeRun()
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{
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using (IDbConnection cnn = new SQLiteConnection(LoadConnectionString()))
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{
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string strQuery = "SELECT COUNT(*) FROM Guardians";
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int num_guardians = cnn.Query<int>(strQuery).SingleOrDefault();
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if (num_guardians > 0)
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return false;
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else
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return true;
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}
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}
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#region reports
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#endregion
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private static string LoadConnectionString(string id = "Default")
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{
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return ConfigurationManager.ConnectionStrings[id].ConnectionString;
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}
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}
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}
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