preset glob non-recursive issue; supporting more syntax

internal/config/config.go

@@ -1,11 +1,36 @@
 package config
 
 import (
+	"fmt"
 	"os"
 
 	"gopkg.in/yaml.v3"
 )
 
+type StringOrSlice []string
+
+func (s *StringOrSlice) UnmarshalYAML(value *yaml.Node) error {
+	switch value.Kind {
+
+	// "preset: *"
+	case yaml.ScalarNode:
+		*s = []string{value.Value}
+		return nil
+
+	// "preset: [a, b]"
+	case yaml.SequenceNode:
+		var out []string
+		for _, v := range value.Content {
+			out = append(out, v.Value)
+		}
+		*s = out
+		return nil
+
+	default:
+		return fmt.Errorf("invalid preset format")
+	}
+}
+
 type Config struct {
 	Config struct {
 		PathMode string `yaml:"path_mode"`
@@ -15,7 +40,7 @@ type Config struct {
 		Preset string `yaml:"preset"`
 	} `yaml:"prompts"`
 
-	Preset map[string][]string `yaml:"preset"`
+	Preset map[string]StringOrSlice `yaml:"preset"`
 }
 
 func Load() (*Config, error) {
@@ -26,5 +51,14 @@ func Load() (*Config, error) {
 
 	var cfg Config
 	err = yaml.Unmarshal(data, &cfg)
-	return &cfg, err
+	if err != nil {
+		return nil, err
+	}
+
+	// DEFAULT PROMPT TEMPLATE
+	if cfg.Prompts.Preset == "" {
+		cfg.Prompts.Preset = "The following code is from file {{path}}:\n---\n{{content}}"
+	}
+
+	return &cfg, nil
 }

internal/utils/glob.go

@@ -3,30 +3,76 @@ package utils
 import (
 	"os"
 	"path/filepath"
+	"strings"
 )
 
 func ExpandGlob(patterns []string) ([]string, error) {
 	var result []string
+	seen := make(map[string]struct{})
 
-	for _, p := range patterns {
-		matches, err := filepath.Glob(p)
+	for _, pattern := range patterns {
+
+		if pattern == "*" {
+			filepath.Walk(".", func(path string, info os.FileInfo, err error) error {
+				if err != nil {
+					return nil
+				}
+				if info.IsDir() {
+					return nil
+				}
+				add(path, seen, &result)
+				return nil
+			})
+			continue
+		}
+
+		isRecursive := strings.Contains(pattern, "**")
+
+		if isRecursive {
+			root := strings.Split(pattern, "**")[0]
+			if root == "" {
+				root = "."
+			}
+
+			filepath.Walk(root, func(path string, info os.FileInfo, err error) error {
+				if err != nil || info.IsDir() {
+					return nil
+				}
+
+				matched, _ := filepath.Match(
+					strings.Replace(pattern, "**", "*", 1),
+					path,
+				)
+
+				if matched {
+					add(path, seen, &result)
+				}
+				return nil
+			})
+			continue
+		}
+
+		matches, err := filepath.Glob(pattern)
 		if err != nil {
 			return nil, err
 		}
 
 		for _, m := range matches {
 			info, err := os.Stat(m)
-			if err != nil {
+			if err != nil || info.IsDir() {
 				continue
 			}
-
-			if info.IsDir() {
-				continue
-			}
-
-			result = append(result, m)
+			add(m, seen, &result)
 		}
 	}
 
 	return result, nil
+}
+
+func add(path string, seen map[string]struct{}, result *[]string) {
+	if _, ok := seen[path]; ok {
+		return
+	}
+	seen[path] = struct{}{}
+	*result = append(*result, path)
 }