john-okeefe
1c52903172
Add utility functions for rendering book metadata: - renderStars(): Convert rating (1-10 scale) to star display - formatFileSize(): Convert bytes to human-readable format (KB, MB, GB) - getExternalURL(): Generate URLs for external book services with smart fallback: ID → ISBN → Title+Author search Supports Goodreads, Open Library, Google Books, Amazon These helpers make book detail template cleaner and follow DRY principle.
125 lines
2.7 KiB
Go
125 lines
2.7 KiB
Go
package templates
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/google/uuid"
|
|
"github.com/jackc/pgx/v5/pgtype"
|
|
)
|
|
|
|
func activeClass(current, target string) string {
|
|
base := "block px-4 py-2 rounded-lg "
|
|
if current == target {
|
|
return base + "bg-accent text-bg-primary"
|
|
}
|
|
return base + "hover:opacity-80"
|
|
}
|
|
|
|
func ContainsString(slice []string, item string) bool {
|
|
for _, s := range slice {
|
|
if s == item {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
func uuidToString(id pgtype.UUID) string {
|
|
if !id.Valid {
|
|
return ""
|
|
}
|
|
u, err := uuid.FromBytes(id.Bytes[0:16])
|
|
if err != nil {
|
|
return ""
|
|
}
|
|
return u.String()
|
|
}
|
|
|
|
// renderStars converts rating (1-10 scale) to star display
|
|
// Rating scale: 1-10 where odd numbers = half stars (1=0.5★, 3=1.5★, etc.)
|
|
func renderStars(rating int32) string {
|
|
stars := ""
|
|
fullStars := rating / 2
|
|
hasHalf := rating%2 != 0
|
|
|
|
for i := int32(0); i < fullStars; i++ {
|
|
stars += "★"
|
|
}
|
|
if hasHalf {
|
|
stars += "½"
|
|
}
|
|
|
|
return stars
|
|
}
|
|
|
|
// formatFileSize converts bytes to human-readable format
|
|
func formatFileSize(bytes int64) string {
|
|
const (
|
|
KB = 1024
|
|
MB = KB * 1024
|
|
GB = MB * 1024
|
|
)
|
|
|
|
switch {
|
|
case bytes >= GB:
|
|
return fmt.Sprintf("%.2f GB", float64(bytes)/float64(GB))
|
|
case bytes >= MB:
|
|
return fmt.Sprintf("%.2f MB", float64(bytes)/float64(MB))
|
|
case bytes >= KB:
|
|
return fmt.Sprintf("%.2f KB", float64(bytes)/float64(KB))
|
|
default:
|
|
return fmt.Sprintf("%d B", bytes)
|
|
}
|
|
}
|
|
|
|
// getExternalURL generates URL for external book services
|
|
// Priority: ID > ISBN > Title+Author search
|
|
func getExternalURL(service string, id string, isbn pgtype.Text, title string, author pgtype.Text) string {
|
|
baseURL := ""
|
|
searchTerm := ""
|
|
|
|
// Determine search term: ID > ISBN > Title+Author
|
|
if id != "" {
|
|
searchTerm = id
|
|
} else if isbn.Valid && isbn.String != "" {
|
|
searchTerm = isbn.String
|
|
} else {
|
|
// Build title+author search query
|
|
if author.Valid && author.String != "" {
|
|
searchTerm = fmt.Sprintf("%s %s", title, author.String)
|
|
} else {
|
|
searchTerm = title
|
|
}
|
|
}
|
|
|
|
// Build URL based on service
|
|
switch service {
|
|
case "goodreads":
|
|
if id != "" {
|
|
baseURL = "https://www.goodreads.com/book/show/"
|
|
} else {
|
|
baseURL = "https://www.goodreads.com/search?q="
|
|
}
|
|
case "openlibrary":
|
|
if id != "" {
|
|
baseURL = "https://openlibrary.org/books/"
|
|
} else {
|
|
baseURL = "https://openlibrary.org/search?q="
|
|
}
|
|
case "googlebooks":
|
|
if id != "" {
|
|
baseURL = "https://books.google.com/books?id="
|
|
} else {
|
|
baseURL = "https://www.google.com/search?tbm=bks&q="
|
|
}
|
|
case "amazon":
|
|
// Amazon doesn't have direct book IDs, always search
|
|
baseURL = "https://www.amazon.com/s?k="
|
|
if isbn.Valid && isbn.String != "" {
|
|
searchTerm = isbn.String
|
|
}
|
|
}
|
|
|
|
return baseURL + searchTerm
|
|
}
|