Corrected comments throughout the repository.

cmd/main.go

@@ -34,6 +34,7 @@ func main() {
 		log.Ldate|log.Ltime|log.Llongfile|log.Lmsgprefix,
 	)
 
+	// Pre-define variables for error handling
 	var err error
 
 	// Read the configuration file
@@ -42,10 +43,10 @@ func main() {
 		logger.Fatalf("Error creating comment: %s", err)
 	}
 
-	// Create GitHub Issues instance
+	// Create a GitHub Issues instance. From now on, you can control GitHub from this instance.
 	issue := github.NewIssue(*owner, *repo, *issueNumber, *gh_token)
 
-	// Get Issue's info
+	// Get Issue's information(e.g. Title, Body) and add them to the user prompt except for comments by Actions.
 	title, _ := issue.GetTitle()
 	body, _ := issue.GetBody()
 	if cfg.System.Debug.Log_level == "debug" {
@@ -55,6 +56,7 @@ func main() {
 	user_prompt := "Title:" + *title + "\n"
 	user_prompt += "Body:" + *body + "\n"
 
+	// Get comments under the Issue and add them to the user prompt except for comments by Actions.
 	comments, _ := issue.GetComments()
 	for _, v := range comments {
 		if *v.User.Login == "github-actions[bot]" {

internal/ai/openai.go

@@ -48,6 +48,7 @@ func NewOpenAIClient(apiKey string, model string) *OpenAI {
 		fmt.Println("Error: OPENAI_API_KEY environment variable not set.")
 		return nil
 	}
+
 	// Specifying the model to use
 	return &OpenAI{
 		apiKey: apiKey,

internal/github/github.go

@@ -21,6 +21,7 @@ type GitHubIssues struct {
 }
 
 func (gh *GitHubIssues) GetIssue() (*github.Issue, error) {
+	// Only the first call retrieves information from GitHub, all other calls use cache
 	if gh.cache == nil {
 		issue, _, err := gh.client.Issues.Get(gh.ctx, gh.owner, gh.repo, gh.issueNumber)
 		if err != nil {
@@ -82,6 +83,7 @@ func NewIssue(owner string, repo string, issueNumber int, token string) *GitHubI
 		log.Ldate|log.Ltime|log.Llongfile|log.Lmsgprefix,
 	)
 
+	// Create a new GitHubIssues instance
 	issue := &GitHubIssues{owner: owner, repo: repo, issueNumber: issueNumber, token: token, client: client, ctx: ctx, logger: logger}
 	return issue
 }

internal/utils/utils.go

@@ -8,6 +8,7 @@ import (
 	"github.com/spf13/viper"
 )
 
+// Root structure of information read from config file
 type Config struct {
 	System System `yaml:"system"`
 	Ai     Ai     `yaml:"ai"`
@@ -54,6 +55,7 @@ func NewConfig(filename string) (*Config, error) {
 	// Get the directory and file name from variable filename
 	dir, file := filepath.Split(filename)
 	base, ext := filepath.Base(file)[:len(filepath.Base(file))-len(filepath.Ext(file))], filepath.Ext(file)[1:]
+
 	// Read the config file
 	viper.SetConfigName(base)
 	viper.SetConfigType(ext)