327 lines
8 KiB
Go
327 lines
8 KiB
Go
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package main
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"net/http"
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"os"
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"regexp"
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"strings"
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"time"
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"github.com/russross/blackfriday/v2"
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"github.com/urfave/cli/v2"
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)
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type Issue struct {
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Title string `json:"title"`
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Body string `json:"body"`
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User User `json:"user"`
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Number int `json:"number"`
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State string `json:"state"`
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Comments int `json:"comments"`
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CreatedAt string `json:"created_at"`
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UpdatedAt string `json:"updated_at"`
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}
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type User struct {
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Login string `json:"login"`
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AvatarURL string `json:"avatar_url"`
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}
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type Comment struct {
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Body string `json:"body"`
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User User `json:"user"`
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CreatedAt string `json:"created_at"`
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}
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func main() {
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app := &cli.App{
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Name: "github-issue-cli",
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Usage: "Fetches GitHub issue data and reconstructs it in Markdown or HTML format",
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Commands: []*cli.Command{
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{
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Name: "fetch",
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Usage: "Fetch a GitHub issue",
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Action: fetchIssue,
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Flags: []cli.Flag{
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&cli.StringFlag{
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Name: "url",
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Usage: "GitHub issue URL",
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Required: true,
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},
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&cli.StringFlag{
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Name: "output",
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Usage: "Output file to write the markdown or html",
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},
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&cli.StringFlag{
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Name: "format",
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Usage: "Output format (markdown or html)",
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Value: "markdown",
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},
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},
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},
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},
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}
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if err := app.Run(os.Args); err != nil {
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fmt.Fprintf(os.Stderr, "Error: %v\n", err)
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os.Exit(1)
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}
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}
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func fetchIssue(c *cli.Context) error {
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url := c.String("url")
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if !strings.Contains(url, "github.com") || !strings.Contains(url, "/issues/") {
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return fmt.Errorf("invalid GitHub issue URL")
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}
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parts := strings.Split(url, "/")
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if len(parts) < 5 {
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return fmt.Errorf("invalid GitHub issue URL")
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}
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owner := parts[3]
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repo := parts[4]
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issueNumber := parts[len(parts)-1]
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issue, err := getIssue(owner, repo, issueNumber)
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if err != nil {
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return err
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}
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comments, err := getComments(owner, repo, issueNumber)
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if err != nil {
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return err
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}
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format := c.String("format")
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var output string
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if format == "html" {
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output = convertToHTML(issue, comments)
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} else {
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output = convertToMarkdown(issue, comments)
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}
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outputFile := c.String("output")
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if outputFile != "" {
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if err := os.WriteFile(outputFile, []byte(output), 0644); err != nil {
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return fmt.Errorf("failed to write to file: %v", err)
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}
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fmt.Printf("Output written to %s\n", outputFile)
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} else {
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fmt.Println(output)
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}
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return nil
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}
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func getIssue(owner, repo, issueNumber string) (Issue, error) {
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apiURL := fmt.Sprintf("https://api.github.com/repos/%s/%s/issues/%s", owner, repo, issueNumber)
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resp, err := http.Get(apiURL)
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if err != nil {
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return Issue{}, fmt.Errorf("failed to fetch issue: %v", err)
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return Issue{}, fmt.Errorf("failed to fetch issue: status code %d", resp.StatusCode)
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}
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var issue Issue
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if err := json.NewDecoder(resp.Body).Decode(&issue); err != nil {
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return Issue{}, fmt.Errorf("failed to decode JSON response: %v", err)
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}
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return issue, nil
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}
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func getComments(owner, repo, issueNumber string) ([]Comment, error) {
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apiURL := fmt.Sprintf("https://api.github.com/repos/%s/%s/issues/%s/comments", owner, repo, issueNumber)
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resp, err := http.Get(apiURL)
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if err != nil {
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return nil, fmt.Errorf("failed to fetch comments: %v", err)
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return nil, fmt.Errorf("failed to fetch comments: status code %d", resp.StatusCode)
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}
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var comments []Comment
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if err := json.NewDecoder(resp.Body).Decode(&comments); err != nil {
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return nil, fmt.Errorf("failed to decode JSON response: %v", err)
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}
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return comments, nil
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}
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func formatDate(isoDate string) (string, error) {
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parsedTime, err := time.Parse(time.RFC3339, isoDate)
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if err != nil {
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return "", err
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}
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return parsedTime.Format("January 2, 2006 15:04 MST"), nil
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}
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func parseMarkdown(md string) string {
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html := blackfriday.Run([]byte(md))
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re := regexp.MustCompile(`!\[Image\]\((https://github.com/user-attachments/assets/[^\)]+)\)`)
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html = re.ReplaceAll(html, []byte(`<img src="$1" alt="Image" style="max-width:100%;height:auto;">`))
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re = regexp.MustCompile(`(?m)^<p>(.*?)</p>$`)
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html = re.ReplaceAll(html, []byte("$1"))
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html = bytes.ReplaceAll(html, []byte("<br>"), []byte(" "))
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return string(html)
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}
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func convertToMarkdown(issue Issue, comments []Comment) string {
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var sb strings.Builder
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createdAt, _ := formatDate(issue.CreatedAt)
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updatedAt, _ := formatDate(issue.UpdatedAt)
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sb.WriteString(fmt.Sprintf(`# %s
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**Issue Number:** %d
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**State:** %s
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**Created By:** %s
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**Created At:** %s
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**Updated At:** %s
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**Comments:** %d
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---
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%s
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`, issue.Title, issue.Number, issue.State, issue.User.Login, createdAt, updatedAt, issue.Comments, issue.Body))
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if len(comments) > 0 {
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sb.WriteString("\n## Comments:\n")
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for _, comment := range comments {
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commentCreatedAt, _ := formatDate(comment.CreatedAt)
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sb.WriteString(fmt.Sprintf("\n**%s** commented on %s:\n\n%s\n", comment.User.Login, commentCreatedAt, comment.Body))
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}
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}
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return sb.String()
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}
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func convertToHTML(issue Issue, comments []Comment) string {
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var sb strings.Builder
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createdAt, _ := formatDate(issue.CreatedAt)
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updatedAt, _ := formatDate(issue.UpdatedAt)
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sb.WriteString(`<style>
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body {
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font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
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background-color: #0d1117;
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color: #c9d1d9;
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padding: 20px;
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}
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body.light-mode {
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background-color: #ffffff;
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color: #24292e;
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}
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.issue-container {
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background-color: #161b22;
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border: 1px solid #30363d;
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border-radius: 6px;
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padding: 15px;
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margin-bottom: 20px;
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}
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body.light-mode .issue-container {
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background-color: #ffffff;
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border-color: #d0d7de;
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}
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.issue-header {
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border-bottom: 1px solid #30363d;
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padding-bottom: 10px;
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margin-bottom: 10px;
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}
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body.light-mode .issue-header {
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border-color: #d0d7de;
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}
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.issue-title {
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font-size: 24px;
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margin: 0;
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}
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.issue-meta {
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color: #8b949e;
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font-size: 14px;
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}
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.comment-container {
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background-color: #161b22;
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border: 1px solid #30363d;
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border-radius: 6px;
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padding: 10px;
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margin-top: 10px;
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}
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body.light-mode .comment-container {
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background-color: #f6f8fa;
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border-color: #d0d7de;
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}
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.comment-meta {
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color: #8b949e;
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font-size: 14px;
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margin-bottom: 5px;
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}
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.comment-body {
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white-space: pre-wrap;
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}
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.avatar {
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width: 30px;
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height: 30px;
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border-radius: 50%;
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margin-right: 10px;
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vertical-align: middle;
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}
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#toggle-button {
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background-color: #444c56;
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color: #c9d1d9;
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border: none;
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padding: 10px 20px;
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font-size: 16px;
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cursor: pointer;
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border-radius: 5px;
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margin-bottom: 20px;
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}
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body.light-mode #toggle-button {
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background-color: #e1e4e8;
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color: #24292e;
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}
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</style>`)
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sb.WriteString(`<button id="toggle-button">Toggle Light/Dark Mode</button>
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<script>
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document.getElementById('toggle-button').addEventListener('click', function() {
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document.body.classList.toggle('light-mode');
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});
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</script>`)
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sb.WriteString(fmt.Sprintf(`<div class="issue-container">
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<div class="issue-header">
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<h1 class="issue-title">%s</h1>
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<p class="issue-meta"><img src="%s" alt="Avatar" class="avatar">%s | Issue Number: %d | State: %s | Created At: %s | Updated At: %s | Comments: %d</p>
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</div>
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<div class="issue-body">
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%s
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</div>
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</div>`, issue.Title, issue.User.AvatarURL, issue.User.Login, issue.Number, issue.State, createdAt, updatedAt, issue.Comments, parseMarkdown(issue.Body)))
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if len(comments) > 0 {
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sb.WriteString("<h2>Comments:</h2>")
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for _, comment := range comments {
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commentCreatedAt, _ := formatDate(comment.CreatedAt)
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sb.WriteString(fmt.Sprintf(`<div class="comment-container">
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<div class="comment-meta"><img src="%s" alt="Avatar" class="avatar">%s commented on %s:</div>
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<div class="comment-body">%s</div>
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</div>`, comment.User.AvatarURL, comment.User.Login, commentCreatedAt, parseMarkdown(comment.Body)))
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}
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}
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return sb.String()
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}
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