1 files changed, 213 insertions, 0 deletions
diff --git a/modules/ri-base/src/main/java/io/trygvis/rules/terraform/TerraformResource.java b/modules/ri-base/src/main/java/io/trygvis/rules/terraform/TerraformResource.java
new file mode 100644
index 0000000..351a3e1
--- /dev/null
+++ b/modules/ri-base/src/main/java/io/trygvis/rules/terraform/TerraformResource.java
@@ -0,0 +1,213 @@
+package io.trygvis.rules.terraform;
+
+import com.fasterxml.jackson.annotation.JsonValue;
+
+import java.util.*;
+
+@SuppressWarnings("unused")
+public class TerraformResource {
+    private static final String EOL = System.getProperty("line.separator");
+    private final String output;
+    private final String kind;
+    private final String instance;
+    private final Map<String, TerraformValue> values = new LinkedHashMap<>();
+
+    public TerraformResource(String output, String kind, String instance) {
+        this.output = output;
+        this.kind = kind;
+        this.instance = instance;
+    }
+
+    public String getOutput() {
+        return output;
+    }
+
+    public String getName() {
+        return kind + "." + instance;
+    }
+
+    public String getKind() {
+        return kind;
+    }
+
+    public String getInstance() {
+        return instance;
+    }
+
+    public Map<String, TerraformValue> getValues() {
+        return values;
+    }
+
+    public TerraformResource set(String key, String value) {
+        values.put(key, new StringTerraformValue(value));
+        return this;
+    }
+
+    public TerraformResource set(String key, boolean value) {
+        values.put(key, new BooleanTerraformValue(value));
+        return this;
+    }
+
+    public TerraformResource set(String key, int value) {
+        values.put(key, new IntegerTerraformValue(value));
+        return this;
+    }
+
+    public TerraformResource setExpression(String key, String value) {
+        values.put(key, new ExpressionTerraformValue(value));
+        return this;
+    }
+
+    public ArrayTerraformValue array(String key) {
+        var array = new ArrayTerraformValue();
+        values.put(key, array);
+        return array;
+    }
+
+    public String asString() {
+        var buf = new StringBuilder();
+
+        buf.append("resource ");
+        buf.append(quote(kind));
+        buf.append(" ");
+        buf.append(quote(instance));
+        buf.append(" {");
+        buf.append(EOL);
+
+        for (var entry : values.entrySet()) {
+            buf.append("  ");
+            buf.append(entry.getKey());
+            buf.append(" = ");
+            buf.append(entry.getValue().asString());
+            buf.append(EOL);
+        }
+
+        buf.append("}");
+
+        return buf.toString();
+    }
+
+    public interface TerraformValue {
+        String asString();
+    }
+
+    public static class StringTerraformValue implements TerraformValue {
+        private final String value;
+
+        public StringTerraformValue(String value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public String getValue() {
+            return value;
+        }
+
+        @Override
+        public String asString() {
+            return quote(value);
+        }
+    }
+
+    public static class BooleanTerraformValue implements TerraformValue {
+        private final boolean value;
+
+        public BooleanTerraformValue(boolean value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public boolean getValue() {
+            return value;
+        }
+
+        @Override
+        public String asString() {
+            return String.valueOf(value);
+        }
+    }
+
+    public static class IntegerTerraformValue implements TerraformValue {
+        private final int value;
+
+        public IntegerTerraformValue(int value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public int getValue() {
+            return value;
+        }
+
+        @Override
+        public String asString() {
+            return String.valueOf(value);
+        }
+    }
+
+    public static class ExpressionTerraformValue implements TerraformValue {
+        private final String value;
+
+        public ExpressionTerraformValue(String value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public String getValue() {
+            return value;
+        }
+
+        @Override
+        public String asString() {
+            return value;
+        }
+    }
+
+    public static class ArrayTerraformValue implements TerraformValue {
+        private final List<TerraformValue> values = new ArrayList<>();
+
+        @JsonValue
+        public List<TerraformValue> getValues() {
+            return values;
+        }
+
+        public ArrayTerraformValue add(String value) {
+            values.add(new StringTerraformValue(value));
+            return this;
+        }
+
+        public ArrayTerraformValue add(int value) {
+            values.add(new IntegerTerraformValue(value));
+            return this;
+        }
+
+        public ArrayTerraformValue add(boolean value) {
+            values.add(new BooleanTerraformValue(value));
+            return this;
+        }
+
+        public ArrayTerraformValue addExpression(String value) {
+            values.add(new ExpressionTerraformValue(value));
+            return this;
+        }
+
+        @Override
+        public String asString() {
+            if (values.isEmpty()) {
+                return "[]";
+            }
+
+            if (values.size() == 1) {
+                return "[" + values.get(0).asString() + "]";
+            }
+
+            var j = new StringJoiner(",\n  ", "[\n", "\n  ]");
+            values.forEach(value -> j.add(value.asString()));
+            return j.toString();
+        }
+    }
+
+    private static String quote(String value) {
+        return "\"%s\"".formatted(value);
+    }
+}