templates support

Inspectron.Epson.Templates.Tests/Integration/KitchenReceiptTests.cs

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+using Inspectron.Epson.Templates.Configuration;
+using Inspectron.Epson.Templates.Interpreter;
+using Inspectron.Epson.Templates.Language;
+using Inspectron.Epson.Templates.Language.Nodes;
+using Inspectron.Epson.Templates.Tests.Helpers;
+
+namespace Inspectron.Epson.Templates.Tests.Integration;
+
+public class KitchenReceiptTests
+{
+    private readonly PrinterProfile _profile = new("tm-t30iii", "TM-T30III", 48, 24, false);
+
+    private const string KitchenReceiptJson = """
+    {
+        "Title": "Restaurant Test",
+        "TransactionDateTime": "2024-03-15T14:30:00",
+        "ReceiptNumber": "12345",
+        "WaiterName": "John Doe",
+        "WaiterId": "W001",
+        "TableNumber": "5",
+        "SpecialInstruction": "Rush Order",
+        "Gangs": [
+            {
+                "Id": 1,
+                "Name": "Starters",
+                "Dishes": [
+                    {
+                        "Number": 2,
+                        "Name": "Caesar Salad",
+                        "Modifications": {
+                            "Removed": ["Croutons"],
+                            "Added": ["Extra Dressing"]
+                        },
+                        "Comment": "No anchovies"
+                    }
+                ]
+            }
+        ],
+        "Dishes": [
+            {
+                "Number": 1,
+                "Name": "Grilled Salmon",
+                "Modifications": {
+                    "Removed": [],
+                    "Added": []
+                },
+                "Comment": null
+            }
+        ]
+    }
+    """;
+
+    private const string KitchenTemplate = """
+    #red,big,tall,center# {Title} #
+    ---
+
+    #center# {TransactionDateTime:dd-MMM-yy HH:mm} Nr.:{ReceiptNumber} #
+    #center# {WaiterName} #
+    #center# {WaiterId} #
+    #big,bold,center# Tisch: {TableNumber} #
+
+    @if SpecialInstruction
+
+    #big,bold,center# {SpecialInstruction} #
+
+    @end
+    ---
+    @foreach gang in Gangs
+    #red,big,tall,center# {gang.Id}. {gang.Name} #
+    @foreach dish in gang.Dishes
+    #tall# {dish.Number}x {dish.Name} #
+    @if dish.Modifications.Removed.count > 0
+    @foreach removed in dish.Modifications.Removed
+    #bold,tall#   - {removed} #
+    @end
+    @end
+    @if dish.Modifications.Added.count > 0
+    @foreach added in dish.Modifications.Added
+    #bold,tall#   + {added} #
+    @end
+    @end
+    @if dish.Comment
+    #bold,tall#   Comment: {dish.Comment} #
+    @end
+    @end
+    @end
+    @if Gangs.count > 0
+    ---
+    @end
+    @foreach dish in Dishes
+    #tall# {dish.Number}x {dish.Name} #
+    @end
+    """;
+
+    private TemplateNode Parse(string source)
+    {
+        var lexer = new Lexer(source);
+        var parser = new Parser(lexer.Tokenize().Tokens);
+        return parser.Parse().Template;
+    }
+
+    [Fact]
+    public void KitchenReceipt_RendersFully()
+    {
+        var template = Parse(KitchenTemplate);
+        var interpreter = new TemplateInterpreter(_profile);
+        var commands = interpreter.Interpret(template, KitchenReceiptJson);
+
+        // Verify key elements are present
+        Assert.Contains(commands, c => c.Text.Contains("Restaurant Test"));
+        Assert.Contains(commands, c => c.Text.Contains("John Doe"));
+        Assert.Contains(commands, c => c.Text.Contains("Tisch: 5"));
+        Assert.Contains(commands, c => c.Text.Contains("Rush Order"));
+        Assert.Contains(commands, c => c.Text.Contains("1. Starters"));
+        Assert.Contains(commands, c => c.Text.Contains("2x Caesar Salad"));
+        Assert.Contains(commands, c => c.Text.Contains("- Croutons"));
+        Assert.Contains(commands, c => c.Text.Contains("+ Extra Dressing"));
+        Assert.Contains(commands, c => c.Text.Contains("Comment: No anchovies"));
+        Assert.Contains(commands, c => c.Text.Contains("1x Grilled Salmon"));
+    }
+
+    [Fact]
+    public void KitchenReceipt_AppliesStyles()
+    {
+        var template = Parse(KitchenTemplate);
+        var interpreter = new TemplateInterpreter(_profile);
+        var commands = interpreter.Interpret(template, KitchenReceiptJson);
+
+        // Title should be big and tall
+        var titleCmd = commands.FirstOrDefault(c => c.Text.Contains("Restaurant Test"));
+        Assert.NotNull(titleCmd);
+        Assert.True(titleCmd.IsBig);
+        Assert.True(titleCmd.IsTall);
+
+        // Table should be bold and big
+        var tableCmd = commands.FirstOrDefault(c => c.Text.Contains("Tisch: 5"));
+        Assert.NotNull(tableCmd);
+        Assert.True(tableCmd.IsBold);
+        Assert.True(tableCmd.IsBig);
+
+        // Modifications should be bold and tall
+        var modCmd = commands.FirstOrDefault(c => c.Text.Contains("- Croutons"));
+        Assert.NotNull(modCmd);
+        Assert.True(modCmd.IsBold);
+        Assert.True(modCmd.IsTall);
+    }
+
+    [Fact]
+    public void KitchenReceipt_GeneratesSeparators()
+    {
+        var template = Parse(KitchenTemplate);
+        var interpreter = new TemplateInterpreter(_profile);
+        var commands = interpreter.Interpret(template, KitchenReceiptJson);
+
+        var separatorCount = commands.Count(c => c.Text.All(ch => ch == '-') && c.Text.Length == 48);
+        Assert.True(separatorCount >= 2, $"Expected at least 2 separators, found {separatorCount}");
+    }
+
+    [Fact]
+    public void KitchenReceipt_FormatsDateTime()
+    {
+        var template = Parse(KitchenTemplate);
+        var interpreter = new TemplateInterpreter(_profile);
+        var commands = interpreter.Interpret(template, KitchenReceiptJson);
+
+        Assert.Contains(commands, c => c.Text.Contains("15-Mar-24") || c.Text.Contains("15-Mär-24"));
+    }
+
+    [Fact]
+    public void KitchenReceipt_WithoutSpecialInstruction_OmitsSection()
+    {
+        var jsonWithoutInstruction = """
+        {
+            "Title": "Test",
+            "TransactionDateTime": "2024-03-15T14:30:00",
+            "ReceiptNumber": "123",
+            "WaiterName": "John",
+            "WaiterId": "W001",
+            "TableNumber": "1",
+            "SpecialInstruction": null,
+            "Gangs": [],
+            "Dishes": []
+        }
+        """;
+
+        var template = Parse(KitchenTemplate);
+        var interpreter = new TemplateInterpreter(_profile);
+        var commands = interpreter.Interpret(template, jsonWithoutInstruction);
+
+        // Should not have any content that looks like special instruction
+        Assert.DoesNotContain(commands, c => c.Text.Contains("Rush"));
+    }
+}