feat: renderer

renderer/codec/codec.go

@@ -0,0 +1,34 @@
+// Package codec contains functions for rendering template.Block to a string.
+package codec
+
+import (
+	"fmt"
+
+	"git.max-richter.dev/max/marka/renderer/utils"
+	"git.max-richter.dev/max/marka/template"
+)
+
+// RenderBlock renders a single template block using the provided data.
+func RenderBlock(block template.Block, data map[string]any) (string, error) {
+	if block.Type == template.MatchingBlock {
+		return block.GetContent(), nil
+	}
+
+	value, found := utils.GetValueFromPath(data, block.Path)
+	if !found {
+		return "", nil // If not found and not required, return empty string
+	}
+
+	switch block.Codec {
+	case template.CodecText:
+		return fmt.Sprintf("%v", value), nil
+	case template.CodecYaml:
+		return RenderYaml(data, block)
+	case template.CodecList:
+		return RenderList(value, block)
+	case template.CodecConst:
+		return fmt.Sprintf("%v", block.Value), nil
+	default:
+		return "", fmt.Errorf("unknown codec: %s for path '%s'", block.Codec, block.Path)
+	}
+}