mirror of
https://github.com/kjanat/articulate-parser.git
synced 2026-01-16 13:42:10 +01:00
Kaj Kowalski
6317ce268b
The `strings.Title` function is deprecated because it does not handle Unicode punctuation correctly. This change replaces its usage in the DOCX, HTML, and Markdown exporters with the recommended `golang.org/x/text/cases` package. This ensures more robust and accurate title-casing for item headings.
480 lines
16 KiB
Go
480 lines
16 KiB
Go
// Package exporters provides implementations of the Exporter interface
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// for converting Articulate Rise courses into various file formats.
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package exporters
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import (
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"bytes"
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"fmt"
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"html"
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"os"
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"strings"
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"github.com/kjanat/articulate-parser/internal/interfaces"
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"github.com/kjanat/articulate-parser/internal/models"
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"github.com/kjanat/articulate-parser/internal/services"
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"golang.org/x/text/cases"
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"golang.org/x/text/language"
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)
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// HTMLExporter implements the Exporter interface for HTML format.
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// It converts Articulate Rise course data into a structured HTML document.
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type HTMLExporter struct {
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// htmlCleaner is used to convert HTML content to plain text when needed
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htmlCleaner *services.HTMLCleaner
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}
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// NewHTMLExporter creates a new HTMLExporter instance.
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// It takes an HTMLCleaner to handle HTML content conversion when plain text is needed.
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//
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// Parameters:
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// - htmlCleaner: Service for cleaning HTML content in course data
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//
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// Returns:
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// - An implementation of the Exporter interface for HTML format
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func NewHTMLExporter(htmlCleaner *services.HTMLCleaner) interfaces.Exporter {
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return &HTMLExporter{
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htmlCleaner: htmlCleaner,
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}
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}
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// Export exports a course to HTML format.
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// It generates a structured HTML document from the course data
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// and writes it to the specified output path.
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//
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// Parameters:
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// - course: The course data model to export
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// - outputPath: The file path where the HTML content will be written
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//
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// Returns:
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// - An error if writing to the output file fails
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func (e *HTMLExporter) Export(course *models.Course, outputPath string) error {
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var buf bytes.Buffer
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// Write HTML document structure
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buf.WriteString("<!DOCTYPE html>\n")
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buf.WriteString("<html lang=\"en\">\n")
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buf.WriteString("<head>\n")
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buf.WriteString(" <meta charset=\"UTF-8\">\n")
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buf.WriteString(" <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n")
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buf.WriteString(fmt.Sprintf(" <title>%s</title>\n", html.EscapeString(course.Course.Title)))
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buf.WriteString(" <style>\n")
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buf.WriteString(e.getDefaultCSS())
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buf.WriteString(" </style>\n")
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buf.WriteString("</head>\n")
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buf.WriteString("<body>\n")
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// Write course header
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buf.WriteString(fmt.Sprintf(" <header>\n <h1>%s</h1>\n", html.EscapeString(course.Course.Title)))
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if course.Course.Description != "" {
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buf.WriteString(fmt.Sprintf(" <div class=\"course-description\">%s</div>\n", course.Course.Description))
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}
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buf.WriteString(" </header>\n\n")
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// Add metadata section
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buf.WriteString(" <section class=\"course-info\">\n")
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buf.WriteString(" <h2>Course Information</h2>\n")
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buf.WriteString(" <ul>\n")
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buf.WriteString(fmt.Sprintf(" <li><strong>Course ID:</strong> %s</li>\n", html.EscapeString(course.Course.ID)))
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buf.WriteString(fmt.Sprintf(" <li><strong>Share ID:</strong> %s</li>\n", html.EscapeString(course.ShareID)))
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buf.WriteString(fmt.Sprintf(" <li><strong>Navigation Mode:</strong> %s</li>\n", html.EscapeString(course.Course.NavigationMode)))
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if course.Course.ExportSettings != nil {
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buf.WriteString(fmt.Sprintf(" <li><strong>Export Format:</strong> %s</li>\n", html.EscapeString(course.Course.ExportSettings.Format)))
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}
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buf.WriteString(" </ul>\n")
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buf.WriteString(" </section>\n\n")
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// Process lessons
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lessonCounter := 0
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for _, lesson := range course.Course.Lessons {
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if lesson.Type == "section" {
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buf.WriteString(fmt.Sprintf(" <section class=\"course-section\">\n <h2>%s</h2>\n </section>\n\n", html.EscapeString(lesson.Title)))
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continue
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}
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lessonCounter++
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buf.WriteString(fmt.Sprintf(" <section class=\"lesson\">\n <h3>Lesson %d: %s</h3>\n", lessonCounter, html.EscapeString(lesson.Title)))
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if lesson.Description != "" {
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buf.WriteString(fmt.Sprintf(" <div class=\"lesson-description\">%s</div>\n", lesson.Description))
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}
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// Process lesson items
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for _, item := range lesson.Items {
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e.processItemToHTML(&buf, item)
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}
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buf.WriteString(" </section>\n\n")
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}
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buf.WriteString("</body>\n")
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buf.WriteString("</html>\n")
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return os.WriteFile(outputPath, buf.Bytes(), 0644)
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}
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// GetSupportedFormat returns the format name this exporter supports
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// It indicates the file format that the HTMLExporter can generate.
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//
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// Returns:
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// - A string representing the supported format ("html")
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func (e *HTMLExporter) GetSupportedFormat() string {
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return "html"
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}
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// getDefaultCSS returns basic CSS styling for the HTML document
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func (e *HTMLExporter) getDefaultCSS() string {
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return `
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body {
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
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line-height: 1.6;
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color: #333;
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max-width: 800px;
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margin: 0 auto;
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padding: 20px;
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background-color: #f9f9f9;
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}
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header {
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background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
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color: white;
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padding: 2rem;
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border-radius: 10px;
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margin-bottom: 2rem;
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box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
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}
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header h1 {
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margin: 0;
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font-size: 2.5rem;
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font-weight: 300;
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}
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.course-description {
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margin-top: 1rem;
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font-size: 1.1rem;
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opacity: 0.9;
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}
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.course-info {
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background: white;
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padding: 1.5rem;
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border-radius: 8px;
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margin-bottom: 2rem;
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box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
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}
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.course-info h2 {
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margin-top: 0;
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color: #4a5568;
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border-bottom: 2px solid #e2e8f0;
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padding-bottom: 0.5rem;
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}
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.course-info ul {
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list-style: none;
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padding: 0;
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}
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.course-info li {
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margin: 0.5rem 0;
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padding: 0.5rem;
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background: #f7fafc;
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border-radius: 4px;
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}
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.course-section {
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background: #4299e1;
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color: white;
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padding: 1.5rem;
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border-radius: 8px;
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margin: 2rem 0;
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box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
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}
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.course-section h2 {
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margin: 0;
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font-weight: 400;
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}
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.lesson {
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background: white;
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padding: 2rem;
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border-radius: 8px;
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margin: 2rem 0;
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box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
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border-left: 4px solid #4299e1;
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}
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.lesson h3 {
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margin-top: 0;
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color: #2d3748;
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font-size: 1.5rem;
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}
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.lesson-description {
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margin: 1rem 0;
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padding: 1rem;
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background: #f7fafc;
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border-radius: 4px;
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border-left: 3px solid #4299e1;
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}
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.item {
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margin: 1.5rem 0;
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padding: 1rem;
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border-radius: 6px;
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background: #fafafa;
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border: 1px solid #e2e8f0;
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}
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.item h4 {
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margin-top: 0;
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color: #4a5568;
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font-size: 1.2rem;
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text-transform: capitalize;
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}
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.text-item {
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background: #f0fff4;
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border-left: 3px solid #48bb78;
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}
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.list-item {
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background: #fffaf0;
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border-left: 3px solid #ed8936;
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}
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.knowledge-check {
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background: #e6fffa;
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border-left: 3px solid #38b2ac;
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}
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.multimedia-item {
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background: #faf5ff;
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border-left: 3px solid #9f7aea;
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}
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.interactive-item {
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background: #fff5f5;
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border-left: 3px solid #f56565;
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}
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.unknown-item {
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background: #f7fafc;
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border-left: 3px solid #a0aec0;
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}
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.answers {
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margin: 1rem 0;
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}
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.answers h5 {
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margin: 0.5rem 0;
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color: #4a5568;
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}
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.answers ol {
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margin: 0.5rem 0;
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padding-left: 1.5rem;
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}
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.answers li {
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margin: 0.3rem 0;
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padding: 0.3rem;
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}
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.correct-answer {
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background: #c6f6d5;
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border-radius: 3px;
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font-weight: bold;
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}
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.correct-answer::after {
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content: " ✓";
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color: #38a169;
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}
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.feedback {
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margin: 1rem 0;
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padding: 1rem;
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background: #edf2f7;
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border-radius: 4px;
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border-left: 3px solid #4299e1;
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font-style: italic;
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}
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.media-info {
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background: #edf2f7;
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padding: 1rem;
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border-radius: 4px;
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margin: 0.5rem 0;
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}
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.media-info strong {
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color: #4a5568;
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}
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hr {
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border: none;
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height: 2px;
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background: linear-gradient(to right, #667eea, #764ba2);
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margin: 2rem 0;
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border-radius: 1px;
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}
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ul {
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padding-left: 1.5rem;
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}
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li {
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margin: 0.5rem 0;
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}
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`
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}
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// processItemToHTML converts a course item into HTML format
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// and appends it to the provided buffer. It handles different item types
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// with appropriate HTML formatting.
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//
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// Parameters:
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// - buf: The buffer to write the HTML content to
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// - item: The course item to process
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func (e *HTMLExporter) processItemToHTML(buf *bytes.Buffer, item models.Item) {
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switch strings.ToLower(item.Type) {
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case "text":
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e.processTextItem(buf, item)
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case "list":
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e.processListItem(buf, item)
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case "knowledgecheck":
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e.processKnowledgeCheckItem(buf, item)
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case "multimedia":
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e.processMultimediaItem(buf, item)
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case "image":
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e.processImageItem(buf, item)
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case "interactive":
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e.processInteractiveItem(buf, item)
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case "divider":
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e.processDividerItem(buf)
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default:
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e.processUnknownItem(buf, item)
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}
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}
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// processTextItem handles text content with headings and paragraphs
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func (e *HTMLExporter) processTextItem(buf *bytes.Buffer, item models.Item) {
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buf.WriteString(" <div class=\"item text-item\">\n")
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buf.WriteString(" <h4>Text Content</h4>\n")
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for _, subItem := range item.Items {
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if subItem.Heading != "" {
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buf.WriteString(fmt.Sprintf(" <h5>%s</h5>\n", subItem.Heading))
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}
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if subItem.Paragraph != "" {
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buf.WriteString(fmt.Sprintf(" <div>%s</div>\n", subItem.Paragraph))
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}
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}
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buf.WriteString(" </div>\n\n")
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}
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// processListItem handles list content
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func (e *HTMLExporter) processListItem(buf *bytes.Buffer, item models.Item) {
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buf.WriteString(" <div class=\"item list-item\">\n")
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buf.WriteString(" <h4>List</h4>\n")
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buf.WriteString(" <ul>\n")
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for _, subItem := range item.Items {
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if subItem.Paragraph != "" {
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cleanText := e.htmlCleaner.CleanHTML(subItem.Paragraph)
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buf.WriteString(fmt.Sprintf(" <li>%s</li>\n", html.EscapeString(cleanText)))
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}
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}
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buf.WriteString(" </ul>\n")
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buf.WriteString(" </div>\n\n")
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}
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// processKnowledgeCheckItem handles quiz questions and answers
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func (e *HTMLExporter) processKnowledgeCheckItem(buf *bytes.Buffer, item models.Item) {
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buf.WriteString(" <div class=\"item knowledge-check\">\n")
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buf.WriteString(" <h4>Knowledge Check</h4>\n")
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for _, subItem := range item.Items {
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if subItem.Title != "" {
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buf.WriteString(fmt.Sprintf(" <p><strong>Question:</strong> %s</p>\n", subItem.Title))
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}
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if len(subItem.Answers) > 0 {
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e.processAnswers(buf, subItem.Answers)
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}
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if subItem.Feedback != "" {
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buf.WriteString(fmt.Sprintf(" <div class=\"feedback\"><strong>Feedback:</strong> %s</div>\n", subItem.Feedback))
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}
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}
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buf.WriteString(" </div>\n\n")
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}
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// processMultimediaItem handles multimedia content like videos
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func (e *HTMLExporter) processMultimediaItem(buf *bytes.Buffer, item models.Item) {
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buf.WriteString(" <div class=\"item multimedia-item\">\n")
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buf.WriteString(" <h4>Media Content</h4>\n")
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for _, subItem := range item.Items {
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if subItem.Title != "" {
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buf.WriteString(fmt.Sprintf(" <h5>%s</h5>\n", subItem.Title))
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}
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if subItem.Media != nil {
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if subItem.Media.Video != nil {
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buf.WriteString(" <div class=\"media-info\">\n")
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buf.WriteString(fmt.Sprintf(" <p><strong>Video:</strong> %s</p>\n", html.EscapeString(subItem.Media.Video.OriginalUrl)))
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if subItem.Media.Video.Duration > 0 {
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buf.WriteString(fmt.Sprintf(" <p><strong>Duration:</strong> %d seconds</p>\n", subItem.Media.Video.Duration))
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}
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buf.WriteString(" </div>\n")
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}
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}
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if subItem.Caption != "" {
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buf.WriteString(fmt.Sprintf(" <div><em>%s</em></div>\n", subItem.Caption))
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}
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}
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buf.WriteString(" </div>\n\n")
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}
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// processImageItem handles image content
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func (e *HTMLExporter) processImageItem(buf *bytes.Buffer, item models.Item) {
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buf.WriteString(" <div class=\"item multimedia-item\">\n")
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buf.WriteString(" <h4>Image</h4>\n")
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for _, subItem := range item.Items {
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if subItem.Media != nil && subItem.Media.Image != nil {
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buf.WriteString(" <div class=\"media-info\">\n")
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buf.WriteString(fmt.Sprintf(" <p><strong>Image:</strong> %s</p>\n", html.EscapeString(subItem.Media.Image.OriginalUrl)))
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buf.WriteString(" </div>\n")
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}
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if subItem.Caption != "" {
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buf.WriteString(fmt.Sprintf(" <div><em>%s</em></div>\n", subItem.Caption))
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}
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}
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buf.WriteString(" </div>\n\n")
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}
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// processInteractiveItem handles interactive content
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func (e *HTMLExporter) processInteractiveItem(buf *bytes.Buffer, item models.Item) {
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buf.WriteString(" <div class=\"item interactive-item\">\n")
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buf.WriteString(" <h4>Interactive Content</h4>\n")
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for _, subItem := range item.Items {
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if subItem.Title != "" {
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buf.WriteString(fmt.Sprintf(" <p><strong>%s</strong></p>\n", subItem.Title))
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}
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if subItem.Paragraph != "" {
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buf.WriteString(fmt.Sprintf(" <div>%s</div>\n", subItem.Paragraph))
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}
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}
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buf.WriteString(" </div>\n\n")
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}
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// processDividerItem handles divider elements
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func (e *HTMLExporter) processDividerItem(buf *bytes.Buffer) {
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buf.WriteString(" <hr>\n\n")
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}
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// processUnknownItem handles unknown or unsupported item types
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func (e *HTMLExporter) processUnknownItem(buf *bytes.Buffer, item models.Item) {
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if len(item.Items) > 0 {
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buf.WriteString(" <div class=\"item unknown-item\">\n")
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caser := cases.Title(language.English)
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buf.WriteString(fmt.Sprintf(" <h4>%s Content</h4>\n", caser.String(item.Type)))
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for _, subItem := range item.Items {
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e.processGenericSubItem(buf, subItem)
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}
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buf.WriteString(" </div>\n\n")
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}
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}
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// processGenericSubItem processes sub-items for unknown types
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func (e *HTMLExporter) processGenericSubItem(buf *bytes.Buffer, subItem models.SubItem) {
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if subItem.Title != "" {
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buf.WriteString(fmt.Sprintf(" <p><strong>%s</strong></p>\n", subItem.Title))
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}
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if subItem.Paragraph != "" {
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buf.WriteString(fmt.Sprintf(" <div>%s</div>\n", subItem.Paragraph))
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}
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}
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// processAnswers processes answer choices for quiz questions
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func (e *HTMLExporter) processAnswers(buf *bytes.Buffer, answers []models.Answer) {
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buf.WriteString(" <div class=\"answers\">\n")
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buf.WriteString(" <h5>Answers:</h5>\n")
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buf.WriteString(" <ol>\n")
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for _, answer := range answers {
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cssClass := ""
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if answer.Correct {
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cssClass = " class=\"correct-answer\""
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}
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buf.WriteString(fmt.Sprintf(" <li%s>%s</li>\n", cssClass, html.EscapeString(answer.Title)))
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}
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buf.WriteString(" </ol>\n")
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buf.WriteString(" </div>\n")
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}
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