Commit before possibly breaking code.

PcgsInvUi/App.axaml.cs

@@ -4,6 +4,7 @@ using Avalonia.Markup.Xaml;
 using PcgsInvUi.Services;
 using PcgsInvUi.ViewModels;
 using PcgsInvUi.Views;
+using PcgsInvUi.Models;
 
 namespace PcgsInvUi;
 
@@ -14,7 +15,11 @@ public partial class App : Application {
 
     public override void OnFrameworkInitializationCompleted() {
         base.OnFrameworkInitializationCompleted();
-
+        
+        // Create a connection to SQLite
+        var database = new Database();
+        var coin = database.GetCoin(1003, "AG-3");
+        
         if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop) {
             var coins = new Services.CoinCollection();
 

PcgsInvUi/Services/Database.cs

@@ -1,5 +1,150 @@
-namespace PcgsInvUi.Services;
+using System;
+using System.Collections.Generic;
+using System.Data.SQLite;
+using PcgsInvUi.Models;
+
+namespace PcgsInvUi.Services;
 
 public class Database {
-    public Database() { }
+    public SQLiteConnection Connection { get; set; }
+    private Boolean IsConnected { get; set; }
+    
+    public Database() {
+        // Create a connection to SQLite
+        Connection = CreateConnection();
+        // Create a base table.
+        CreateCollection("CollectionTable");
+        Console.WriteLine("Connected to database.");
+    }
+
+    private SQLiteConnection CreateConnection() {
+        // Create a connection.
+        SQLiteConnection connection =
+            new SQLiteConnection("DataSource=C:\\Users\\lvas4\\coin_collection");
+        
+        // Open the connection.
+        try {
+            connection.Open();
+            IsConnected = true;
+        }
+        catch (Exception e) {
+            Console.WriteLine(e.Message);
+        }
+
+        return connection;
+    }
+
+    public void CreateCollection(string collectionName) {
+        // Create a table to store the collection.
+        if (!IsConnected) {
+            // TODO Create a NotConnectedToDatabaseException
+            Console.WriteLine("Not connected to database.");
+            return;
+        }
+        
+        // Create a SQL command.
+        SQLiteCommand cmd = Connection.CreateCommand();
+        cmd.CommandText =
+            $"CREATE TABLE IF NOT EXISTS {collectionName} (" +
+            "PCGS_NUMBER INTEGER," +
+            "GRADE TEXT" +
+            "NAME TEXT," +
+            "YEAR INTEGER," +
+            "DENOMINATION TEXT," +
+            "MINT_MARK TEXT," +
+            "PRICE_GUIDE_VALUE REAL," +
+            "COIN_FACTS_LINK TEXT," +
+            "MAJOR_VARIETY TEXT," +
+            "MINOR_VARIETY TEXT," +
+            "DIE_VARIETY TEXT," +
+            "SERIES_NAME TEXT," +
+            "CATEGORY TEXT," +
+            "DESIGNATION TEXT," +
+            "CERT_NUM TEXT," +
+            "QUANTITY INTEGER," +
+            "PRIMARY KEY(PCGS_NUMBER, GRADE))";
+        
+        // Execute the command.
+        cmd.ExecuteNonQuery();
+    }
+
+    public void InsertCoin(Coin newCoin) {
+        // Use our existing connection to insert a coin to the database.
+        if (!IsConnected) {
+            // TODO Create a NotConnectedToDatabaseException
+            Console.WriteLine("Not connected to database.");
+            return;
+        }
+        
+        // Create a SQL command.
+        SQLiteCommand cmd = Connection.CreateCommand();
+        cmd.CommandText =
+            "INSERT INTO CollectionTable (PCGS_NUMBER, GRADE, NAME, YEAR," +
+            "DENOMINATION, MINT_MARK, PRICE_GUIDE_VALUE, COIN_FACTS_LINK," +
+            "MAJOR_VARIETY, MINOR_VARIETY, DIE_VARIETY, SERIES_NAME, CATEGORY, DESIGNATION," +
+            "CERT_NUM, QUANTITY) " +
+            "VALUES (@PcgsNumber, @Name, @Grade, @Value, @Year, @Denomination, @MintMark, @PriceGuideValue," +
+            "@CoinFactsLink, @MajorVariety, @MinorVariety, @DieVariety, @SeriesName, @Category, @Designation," +
+            "@CertificateNumber, @Quantity)";
+        cmd.Parameters.AddWithValue("@PcgsNumber", newCoin.PCGSNo);
+        cmd.Parameters.AddWithValue("@Name", newCoin.Name);
+        cmd.Parameters.AddWithValue("@Grade", newCoin.Grade);
+        cmd.Parameters.AddWithValue("@Value", newCoin.PriceGuideValue);
+        cmd.Parameters.AddWithValue("@Year", newCoin.Year);
+        cmd.Parameters.AddWithValue("@Denomination", newCoin.Denomination);
+        cmd.Parameters.AddWithValue("@MintMark", newCoin.MintMark);
+        cmd.Parameters.AddWithValue("@PriceGuideValue", newCoin.PriceGuideValue);
+        cmd.Parameters.AddWithValue("@CoinFactsLink", newCoin.CoinFactsLink);
+        cmd.Parameters.AddWithValue("@MajorVariety", newCoin.MajorVariety);
+        cmd.Parameters.AddWithValue("@MinorVariety", newCoin.MinorVariety);
+        cmd.Parameters.AddWithValue("@DieVariety", newCoin.DieVariety);
+        cmd.Parameters.AddWithValue("@SeriesName", newCoin.SeriesName);
+        cmd.Parameters.AddWithValue("@Category", newCoin.Category);
+        cmd.Parameters.AddWithValue("@Designation", newCoin.Designation);
+        cmd.Parameters.AddWithValue("@CertificateNumber", newCoin.CertificateNumber);
+        cmd.Parameters.AddWithValue("@Quantity", newCoin.Quantity);
+        
+        // Execute the command.
+        cmd.ExecuteNonQuery();
+    }
+
+    public List<Coin> GetCollection(string collectionName) {
+        SQLiteCommand cmd = Connection.CreateCommand();
+        cmd.CommandText = $"SELECT * FROM {collectionName}";
+
+        var coins = new List<Coin>();
+        
+        using (var reader = cmd.ExecuteReader()) {
+            while (reader.Read()) {
+                // Create coin from reader then add to list.
+                Coin coin = new Coin();
+                coins.Add(coin);
+            }
+        }
+        
+        return coins;
+    }
+    
+    public Coin GetCoin(int pcgsNumber, string grade) {
+        // Get the coin based off of the pcgs number.
+        SQLiteCommand cmd = Connection.CreateCommand();
+        cmd.CommandText = "SELECT * FROM CollectionTable WHERE Id = @Id AND Grade = @Grade";
+        cmd.Parameters.AddWithValue("@Id", pcgsNumber);
+        cmd.Parameters.AddWithValue("@Grade", grade);
+        
+        // Execute the command.
+        using (var reader = cmd.ExecuteReader()) {
+            while (reader.Read()) {
+                // TODO Create a coin from the reader.
+                Console.WriteLine(reader.ToString());
+                Coin coin = new Coin();
+            }
+        }
+
+        return new Coin();
+    }
+
+    public void DeleteCoin(Coin delCoin) {
+        
+    }
 }