Added cembra pdf statement parser

Schaad.Finance.Api/CreditCardProvider.cs

@@ -2,6 +2,7 @@
 {
     public enum CreditCardProvider
     {
-        Cembra
+        CembraCsv,
+        CembraPdf
     }
 }

Schaad.Finance.Api/IPdfParsingService.cs

@@ -0,0 +1,10 @@
+using System;
+using System.Collections.Generic;
+
+namespace Schaad.Finance.Api
+{
+    public interface IPdfParsingService
+    {
+        IReadOnlyList<string> ExtractText(string file, int page);
+    }
+}

Schaad.Finance.Tests/CreditCardStatementServiceTest.cs

@@ -1,6 +1,8 @@
-using NUnit.Framework;
+using Moq;
+using NUnit.Framework;
 using Schaad.Finance.Api;
 using Schaad.Finance.Services;
+using System.Collections.Generic;
 using System.Linq;
 
 namespace Schaad.Finance.Tests
@@ -13,16 +15,34 @@ namespace Schaad.Finance.Tests
         [SetUp]
         public void Startup()
         {
-            service = new CreditCardStatementService();
+            var pdfParsingServiceMock = new Mock<IPdfParsingService>();
+            pdfParsingServiceMock.Setup(t => t.ExtractText(It.IsAny<string>(), It.IsAny<int>())).Returns(() => new List<string>()
+            {
+                "     Einkaufs-Datum",
+                "     13.07.2019          14.07.2019          Clay Schaad          13.70",
+                "     13.07.2019          14.07.2019          Clay Schaad2         23.50",
+                "     dummy test",
+                "     Saldo per    "
+            });
+            service = new CreditCardStatementService(pdfParsingServiceMock.Object);
         }
 
         [Test]
-        public void ReadFile_Cembra()
+        public void ReadFile_CembraCsv()
         {
-            var transactions = service.ReadFile(CreditCardProvider.Cembra, @"Data\cembra.csv", System.Text.Encoding.UTF8);
+            var transactions = service.ReadFile(CreditCardProvider.CembraCsv, @"Data\cembra.csv", System.Text.Encoding.UTF8);
 
             Assert.That(transactions.Count, Is.EqualTo(4));
             Assert.That(transactions.Sum(t => t.Amount), Is.EqualTo(144.60m));
         }
+
+        [Test]
+        public void ReadFile_CembraPdf()
+        {
+            var transactions = service.ReadFile(CreditCardProvider.CembraPdf, "", System.Text.Encoding.UTF8);
+
+            Assert.That(transactions.Count, Is.EqualTo(2));
+            Assert.That(transactions.Sum(t => t.Amount), Is.EqualTo(37.20m));
+        }
     }
 }

Schaad.Finance.Tests/Schaad.Finance.Tests.csproj

@@ -8,6 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
+    <PackageReference Include="Moq" Version="4.12.0" />
     <PackageReference Include="MSTest.TestAdapter" Version="1.4.0" />
     <PackageReference Include="MSTest.TestFramework" Version="1.4.0" />
     <PackageReference Include="NUnit" Version="3.12.0" />
@@ -22,15 +23,6 @@
     <Folder Include="Data\" />
   </ItemGroup>
 
-  <ItemGroup>
-    <Reference Include="Schaad.Web">
-      <HintPath>..\dlls\Schaad.Web.dll</HintPath>
-    </Reference>
-    <Reference Include="Schaad.Web.Api">
-      <HintPath>..\dlls\Schaad.Web.Api.dll</HintPath>
-    </Reference>
-  </ItemGroup>
-
   <ItemGroup>
     <None Update="Data\camt053.xml">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>

Schaad.Finance/Schaad.Finance.csproj

@@ -5,6 +5,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="CsvHelper" Version="12.1.2" />
+    <PackageReference Include="FreeSpire.PDF" Version="5.4.0" />
     <PackageReference Include="Microsoft.CSharp" Version="4.5.0" />
     <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
     <PackageReference Include="System.Xml.XmlDocument" Version="4.3.0" />

Schaad.Finance/Services/CreditCardStatementService.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Text;
@@ -11,19 +12,29 @@ namespace Schaad.Finance.Services
 {
     public class CreditCardStatementService : ICreditCardStatementService
     {
+        private readonly IPdfParsingService pdfParsingService;
+
+        public CreditCardStatementService(IPdfParsingService pdfParsingService)
+        {
+            this.pdfParsingService = pdfParsingService;
+        }
+
         public IReadOnlyList<CreditCardTransaction> ReadFile(CreditCardProvider creditCardProvider, string filePath, Encoding encoding)
         {
             switch (creditCardProvider)
             {
-                case CreditCardProvider.Cembra:
+                case CreditCardProvider.CembraCsv:
-                    return ParseCembra(filePath, encoding);
+                    return ParseCembraCsv(filePath, encoding);
+
+                case CreditCardProvider.CembraPdf:
+                    return ParseCembraPdf(filePath);
 
                 default:
                     throw new NotImplementedException($"Unnknown procider {creditCardProvider}");
             }
         }
 
-        private IReadOnlyList<CreditCardTransaction> ParseCembra(string filePath, Encoding encoding)
+        private IReadOnlyList<CreditCardTransaction> ParseCembraCsv(string filePath, Encoding encoding)
         {
             using (var reader = new StreamReader(filePath, encoding))
             {
@@ -35,5 +46,129 @@ namespace Schaad.Finance.Services
                 }
             }
         }
+
+        private IReadOnlyList<CreditCardTransaction> ParseCembraPdf(string filePath)
+        {
+            var text = pdfParsingService.ExtractText(filePath, 2);
+
+            var transactionList = new List<CreditCardTransaction>();
+
+            var startReading = false;
+            foreach (var line in text)
+            {
+                var trimmedLine = line.Trim();
+                if (trimmedLine.StartsWith("Einkaufs-Datum"))
+                {
+                    startReading = true;
+                    continue;
+                }
+
+                if (trimmedLine.StartsWith("Saldo per"))
+                {
+                    break;
+                }
+
+                if (startReading)
+                {
+                    var transaction = ParseLine(trimmedLine);
+                    if (transaction != null)
+                    {
+                        transactionList.Add(transaction);
+                    }
+                }
+            }
+
+            return transactionList;
+        }
+
+        private CreditCardTransaction ParseLine(string line)
+        {
+            var nextPart = GetNextPart(line, 10);
+
+            if (nextPart.part == null)
+            {
+                return null;
+            }
+
+            var purchaseDate = ParseDateTime(nextPart.part);
+
+            if (purchaseDate.HasValue == false)
+            {
+                return null;
+            }
+
+            nextPart = GetNextPart(nextPart.rest, 10);
+            var bookingDate = ParseDateTime(nextPart.part);
+
+            if (bookingDate.HasValue == false)
+            {
+                return null;
+            }
+
+            nextPart = GetNextPartUntilSpace(nextPart.rest, 2);
+            var transactionText = nextPart.part;
+
+            nextPart = GetNextPartUntilSpace(nextPart.rest, 2);
+            var amount = nextPart.part;
+
+            return new CreditCardTransaction
+            {
+                BookingDate = bookingDate.Value,
+                TransactionDate = purchaseDate.Value,
+                Amount = decimal.Parse(amount),
+                Transaction = transactionText
+            };
+        }
+
+        private (string part, string rest) GetNextPart(string line, int length)
+        {
+            if (line.Length < length)
+            {
+                return (null, null);
+            }
+
+            var part = line.Substring(0, length);
+            var rest = line.Substring(length, line.Length - length).TrimStart();
+            return (part, rest);
+        }
+
+        private (string part, string rest) GetNextPartUntilSpace(string line, int howManySpaces)
+        {
+            var part = "";
+            var spaceCount = 0;
+            foreach (var c in line)
+            {
+                if (c == ' ')
+                {
+                    spaceCount++;
+                }
+                else
+                {
+                    spaceCount = 0;
+                }
+
+                part += c;
+
+                if (spaceCount == howManySpaces)
+                {
+                    part = part.Trim();
+                    break;
+                }
+            }
+
+            var rest = line.Substring(part.Length, line.Length - part.Length).TrimStart();
+            return (part, rest);
+        }
+
+        private DateTime? ParseDateTime(string dateString)
+        {
+            var deCH = new CultureInfo("de-CH");
+            DateTime purchaseDate;
+            if (DateTime.TryParseExact(dateString, "dd.MM.yyyy", deCH, DateTimeStyles.None, out purchaseDate))
+            {
+                return purchaseDate;
+            }
+            return null;
+        }
     }
 }

Schaad.Finance/Services/PdfParsingService.cs

@@ -0,0 +1,18 @@
+using Schaad.Finance.Api;
+using Spire.Pdf;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Schaad.Finance.Services
+{
+    public class PdfParsingService : IPdfParsingService
+    {
+        public IReadOnlyList<string> ExtractText(string file, int page)
+        {
+            var document = new PdfDocument();
+            document.LoadFromFile(file);
+            var text = document.Pages[page - 1].ExtractText();
+            return text.Split('\n').ToList();
+        }
+    }
+}