shiori/cmd/update.go

package cmd

import (
	"fmt"
	"github.com/RadhiFadlillah/go-readability"
	db "github.com/RadhiFadlillah/shiori/database"
	"github.com/RadhiFadlillah/shiori/model"
	"github.com/spf13/cobra"
	"strconv"
	"strings"
	"sync"
	"time"
)

var (
	updateCmd = &cobra.Command{
		Use:   "update [indices]",
		Short: "Update the saved bookmarks.",
		Long: "Update fields of an existing bookmark. " +
			"Accepts space-separated list of indices (e.g. 5 6 23 4 110 45), hyphenated range (e.g. 100-200) or both (e.g. 1-3 7 9). " +
			"If no arguments, ALL bookmarks will be updated. Update works differently depending on the flags:\n" +
			"- If --title, --tag or --comment is passed without any value, clear the corresponding field from DB.\n" +
			"- If indices are passed without any flags (--url, --title, --tag and --excerpt), read the URLs from DB and update titles from web.\n" +
			"- If --url is passed (and --title is omitted), update the title from web using the URL. While using this flag, update only accept EXACTLY one index.\n" +
			"While updating bookmark's tags, you can use - to remove tag (e.g. -nature to remove nature tag from this bookmark).",
		Run: func(cmd *cobra.Command, args []string) {
			// Read flags
			url, _ := cmd.Flags().GetString("url")
			title, _ := cmd.Flags().GetString("title")
			excerpt, _ := cmd.Flags().GetString("excerpt")
			tags, _ := cmd.Flags().GetStringSlice("tags")
			offline, _ := cmd.Flags().GetBool("offline")
			skipConfirmation, _ := cmd.Flags().GetBool("yes")

			// Check if --url flag is used
			if url != "" {
				if len(args) != 1 {
					cError.Println("Update only accepts one index while using --url flag")
					return
				}

				idx, err := strconv.Atoi(args[0])
				if err != nil || idx < -1 {
					cError.Println("Index is not valid")
					return
				}
			}

			// If no arguments, confirm to user
			if len(args) == 0 && !skipConfirmation {
				confirmUpdate := ""
				fmt.Print("Update ALL bookmarks? (y/n): ")
				fmt.Scanln(&confirmUpdate)

				if confirmUpdate != "y" {
					fmt.Println("No bookmarks updated")
					return
				}
			}

			// Read bookmarks from database
			bookmarks, err := DB.GetBookmarks(db.GetBookmarksOptions{WithContents: true}, args...)
			if err != nil {
				cError.Println(err)
				return
			}

			if len(bookmarks) == 0 {
				cError.Println("No matching index found")
				return
			}

			if url != "" && len(bookmarks) == 1 {
				bookmarks[0].URL = url
			}

			// If not offline, fetch articles from internet
			if !offline {
				mutex := sync.Mutex{}
				waitGroup := sync.WaitGroup{}

				for i, book := range bookmarks {
					go func(pos int, book model.Bookmark) {
						waitGroup.Add(1)
						defer waitGroup.Done()

						article, err := readability.Parse(book.URL, 10*time.Second)
						if err == nil {
							book.Title = article.Meta.Title
							book.ImageURL = article.Meta.Image
							book.Excerpt = article.Meta.Excerpt
							book.Author = article.Meta.Author
							book.MinReadTime = article.Meta.MinReadTime
							book.MaxReadTime = article.Meta.MaxReadTime
							book.Content = article.Content
							book.HTML = article.RawContent

							mutex.Lock()
							bookmarks[pos] = book
							mutex.Unlock()
						}
					}(i, book)
				}

				waitGroup.Wait()
			}

			// Map the tags to be deleted
			addedTags := make(map[string]struct{})
			deletedTags := make(map[string]struct{})
			for _, tag := range tags {
				tag = strings.ToLower(tag)
				tag = strings.TrimSpace(tag)

				if strings.HasPrefix(tag, "-") {
					tag = strings.TrimPrefix(tag, "-")
					deletedTags[tag] = struct{}{}
				} else {
					addedTags[tag] = struct{}{}
				}
			}

			// Set default title, excerpt and tags
			for i := range bookmarks {
				if title != "" {
					bookmarks[i].Title = title
				}

				if excerpt != "" {
					bookmarks[i].Excerpt = excerpt
				}

				tempAddedTags := make(map[string]struct{})
				for key, value := range addedTags {
					tempAddedTags[key] = value
				}

				newTags := []model.Tag{}
				for _, tag := range bookmarks[i].Tags {
					if _, isDeleted := deletedTags[tag.Name]; isDeleted {
						tag.Deleted = true
					}

					if _, alreadyExist := addedTags[tag.Name]; alreadyExist {
						delete(tempAddedTags, tag.Name)
					}

					newTags = append(newTags, tag)
				}

				for tag := range tempAddedTags {
					newTags = append(newTags, model.Tag{Name: tag})
				}

				bookmarks[i].Tags = newTags
			}

			err = DB.UpdateBookmarks(bookmarks)
			if err != nil {
				cError.Println("Failed to update bookmarks:", err)
				return
			}

			printBookmark(bookmarks...)
		},
	}
)

func init() {
	updateCmd.Flags().StringP("url", "u", "", "New URL for this bookmark.")
	updateCmd.Flags().StringP("title", "i", "", "New title for this bookmark.")
	updateCmd.Flags().StringP("excerpt", "e", "", "New excerpt for this bookmark.")
	updateCmd.Flags().StringSliceP("tags", "t", []string{}, "Comma-separated tags for this bookmark.")
	updateCmd.Flags().BoolP("offline", "o", false, "Update bookmark without fetching data from internet.")
	updateCmd.Flags().BoolP("yes", "y", false, "Skip confirmation prompt and update ALL bookmarks")
	rootCmd.AddCommand(updateCmd)
}