tagliatelle

include-bulk.go (13408B)

---

 package main
 
 import (
 	"database/sql"
 	"fmt"
 	"log"
 	"net/http"
 	"strconv"
 	"strings"
 )
 
 func applyBulkTagOperations(fileIDs []int, category, value, operation string) error {
 	category = strings.TrimSpace(category)
 	value = strings.TrimSpace(value)
 	if category == "" {
 		return fmt.Errorf("category cannot be empty")
 	}
 
 	if operation == "add" && value == "" {
 		return fmt.Errorf("value cannot be empty when adding tags")
 	}
 
 	tx, err := db.Begin()
 	if err != nil {
 		return fmt.Errorf("failed to start transaction: %v", err)
 	}
 	defer tx.Rollback()
 
 	var catID int
 	err = tx.QueryRow("SELECT id FROM categories WHERE name=?", category).Scan(&catID)
 	if err != nil && err != sql.ErrNoRows {
 		return fmt.Errorf("failed to query category: %v", err)
 	}
 
 	if catID == 0 {
 		if operation == "remove" {
 			return fmt.Errorf("cannot remove non-existent category: %s", category)
 		}
 		res, err := tx.Exec("INSERT INTO categories(name) VALUES(?)", category)
 		if err != nil {
 			return fmt.Errorf("failed to create category: %v", err)
 		}
 		cid, _ := res.LastInsertId()
 		catID = int(cid)
 	}
 
 	var tagID int
 	if value != "" {
 		err = tx.QueryRow("SELECT id FROM tags WHERE category_id=? AND value=?", catID, value).Scan(&tagID)
 		if err != nil && err != sql.ErrNoRows {
 			return fmt.Errorf("failed to query tag: %v", err)
 		}
 
 		if tagID == 0 {
 			if operation == "remove" {
 				return fmt.Errorf("cannot remove non-existent tag: %s=%s", category, value)
 			}
 			res, err := tx.Exec("INSERT INTO tags(category_id, value) VALUES(?, ?)", catID, value)
 			if err != nil {
 				return fmt.Errorf("failed to create tag: %v", err)
 			}
 			tid, _ := res.LastInsertId()
 			tagID = int(tid)
 		}
 	}
 
 	for _, fileID := range fileIDs {
 		if operation == "add" {
 			_, err = tx.Exec("INSERT OR IGNORE INTO file_tags(file_id, tag_id) VALUES (?, ?)", fileID, tagID)
 		} else if operation == "remove" {
 			if value != "" {
 				_, err = tx.Exec("DELETE FROM file_tags WHERE file_id=? AND tag_id=?", fileID, tagID)
 			} else {
 				_, err = tx.Exec(`DELETE FROM file_tags WHERE file_id=? AND tag_id IN (SELECT t.id FROM tags t WHERE t.category_id=?)`, fileID, catID)
 			}
 		} else {
 			return fmt.Errorf("invalid operation: %s (must be 'add' or 'remove')", operation)
 		}
 		if err != nil {
 			return fmt.Errorf("failed to %s tag for file %d: %v", operation, fileID, err)
 		}
 	}
 
 	return tx.Commit()
 }
 
 func getBulkTagFormData() BulkTagFormData {
 	catRows, err := db.Query("SELECT name FROM categories ORDER BY name")
 	if err != nil {
 		log.Printf("Error: getBulkTagFormData: failed to query categories: %v", err)
 	}
 	var cats []string
 	if catRows != nil {
 		for catRows.Next() {
 			var c string
 			catRows.Scan(&c)
 			cats = append(cats, c)
 		}
 		catRows.Close()
 	}
 
 	return BulkTagFormData{
 		Categories:  cats,
 		RecentFiles: getRecentFiles(),
 		FormData: struct {
 			FileRange string
 			Category  string
 			Value     string
 			Operation string
 			TagQuery      string
 			SelectionMode string
 		}{Operation: "add"},
 	}
 }
 
 func bulkTagHandler(w http.ResponseWriter, r *http.Request) {
 	if r.Method == http.MethodGet {
 		formData := getBulkTagFormData()
 		pageData := buildPageData("Bulk Tag Editor", formData)
 		renderTemplate(w, "bulk-tag.html", pageData)
 		return
 	}
 	if r.Method == http.MethodPost {
 		rangeStr := strings.TrimSpace(r.FormValue("file_range"))
 		tagQuery := strings.TrimSpace(r.FormValue("tag_query"))
 		selectionMode := r.FormValue("selection_mode")
 		category := strings.TrimSpace(r.FormValue("category"))
 		value := strings.TrimSpace(r.FormValue("value"))
 		operation := r.FormValue("operation")
 
 		formData := getBulkTagFormData()
 		formData.FormData.FileRange = rangeStr
 		formData.FormData.TagQuery = tagQuery
 		formData.FormData.SelectionMode = selectionMode
 		formData.FormData.Category = category
 		formData.FormData.Value = value
 		formData.FormData.Operation = operation
 
 		createErrorResponse := func(errorMsg string) {
 			formData.Error = errorMsg
 			pageData := buildPageData("Bulk Tag Editor", formData)
 			renderTemplate(w, "bulk-tag.html", pageData)
 		}
 
 		// Validate selection mode
 		if selectionMode == "" {
 			selectionMode = "range" // default
 		}
 
 		// Validate inputs based on selection mode
 		if selectionMode == "range" && rangeStr == "" {
 			createErrorResponse("File range cannot be empty")
 			return
 		}
 		if selectionMode == "tags" && tagQuery == "" {
 			createErrorResponse("Tag query cannot be empty")
 			return
 		}
 		if category == "" {
 			createErrorResponse("Category cannot be empty")
 			return
 		}
 		if operation == "add" && value == "" {
 			createErrorResponse("Value cannot be empty when adding tags")
 			return
 		}
 
 		// Get file IDs based on selection mode
 		var fileIDs []int
 		var err error
 
 		if selectionMode == "range" {
 			fileIDs, err = parseFileIDRange(rangeStr)
 			if err != nil {
 				createErrorResponse(fmt.Sprintf("Invalid file range: %v", err))
 				return
 			}
 		} else if selectionMode == "tags" {
 			fileIDs, err = getFileIDsFromTagQuery(tagQuery)
 			if err != nil {
 				createErrorResponse(fmt.Sprintf("Tag query error: %v", err))
 				return
 			}
 			if len(fileIDs) == 0 {
 				createErrorResponse("No files match the tag query")
 				return
 			}
 		} else {
 			createErrorResponse("Invalid selection mode")
 			return
 		}
 
 		validFiles, err := validateFileIDs(fileIDs)
 		if err != nil {
 			createErrorResponse(fmt.Sprintf("File validation error: %v", err))
 			return
 		}
 
 		err = applyBulkTagOperations(fileIDs, category, value, operation)
 		if err != nil {
 			createErrorResponse(fmt.Sprintf("Tag operation failed: %v", err))
 			return
 		}
 
 		// Build success message
 		var successMsg string
 		var selectionDesc string
 		if selectionMode == "range" {
 			selectionDesc = fmt.Sprintf("file range '%s'", rangeStr)
 		} else {
 			selectionDesc = fmt.Sprintf("tag query '%s'", tagQuery)
 		}
 
 		if operation == "add" {
 			successMsg = fmt.Sprintf("Tag '%s: %s' added to %d files matching %s",
 				category, value, len(validFiles), selectionDesc)
 		} else {
 			if value != "" {
 				successMsg = fmt.Sprintf("Tag '%s: %s' removed from %d files matching %s",
 					category, value, len(validFiles), selectionDesc)
 			} else {
 				successMsg = fmt.Sprintf("All '%s' category tags removed from %d files matching %s",
 					category, len(validFiles), selectionDesc)
 			}
 		}
 
 		// Add file list
 		var filenames []string
 		for _, f := range validFiles {
 			filenames = append(filenames, f.Filename)
 		}
 		if len(filenames) <= 5 {
 			successMsg += fmt.Sprintf(": %s", strings.Join(filenames, ", "))
 		} else {
 			successMsg += fmt.Sprintf(": %s and %d more", strings.Join(filenames[:5], ", "), len(filenames)-5)
 		}
 
 		formData.Success = successMsg
 		pageData := buildPageData("Bulk Tag Editor", formData)
 		renderTemplate(w, "bulk-tag.html", pageData)
 		return
 	}
 	renderError(w, "Method not allowed", http.StatusMethodNotAllowed)
 }
 
 
 func parseFileIDRange(rangeStr string) ([]int, error) {
 	var fileIDs []int
 	parts := strings.Split(rangeStr, ",")
 
 	for _, part := range parts {
 		part = strings.TrimSpace(part)
 		if part == "" {
 			continue
 		}
 
 		if strings.Contains(part, "-") {
 			rangeParts := strings.Split(part, "-")
 			if len(rangeParts) != 2 {
 				return nil, fmt.Errorf("invalid range format: %s", part)
 			}
 
 			start, err := strconv.Atoi(strings.TrimSpace(rangeParts[0]))
 			if err != nil {
 				return nil, fmt.Errorf("invalid start ID in range %s: %v", part, err)
 			}
 
 			end, err := strconv.Atoi(strings.TrimSpace(rangeParts[1]))
 			if err != nil {
 				return nil, fmt.Errorf("invalid end ID in range %s: %v", part, err)
 			}
 
 			if start > end {
 				return nil, fmt.Errorf("invalid range %s: start must be <= end", part)
 			}
 
 			for i := start; i <= end; i++ {
 				fileIDs = append(fileIDs, i)
 			}
 		} else {
 			id, err := strconv.Atoi(part)
 			if err != nil {
 				return nil, fmt.Errorf("invalid file ID: %s", part)
 			}
 			fileIDs = append(fileIDs, id)
 		}
 	}
 
 	uniqueIDs := make(map[int]bool)
 	var result []int
 	for _, id := range fileIDs {
 		if !uniqueIDs[id] {
 			uniqueIDs[id] = true
 			result = append(result, id)
 		}
 	}
 
 	return result, nil
 }
 
 func getFileIDsFromTagQuery(query string) ([]int, error) {
 	query = strings.TrimSpace(query)
 	if query == "" {
 		return nil, fmt.Errorf("empty query")
 	}
 
 	// Check if query contains OR operator
 	if strings.Contains(strings.ToUpper(query), " OR ") {
 		return getFileIDsFromORQuery(query)
 	}
 
 	// Otherwise treat as AND query (comma-separated or single tag)
 	return getFileIDsFromANDQuery(query)
 }
 
 // getFileIDsFromANDQuery handles comma-separated tags (AND logic)
 func getFileIDsFromANDQuery(query string) ([]int, error) {
 	tagPairs := strings.Split(query, ",")
 	var tags []TagPair
 
 	for _, pair := range tagPairs {
 		pair = strings.TrimSpace(pair)
 		if pair == "" {
 			continue
 		}
 
 		parts := strings.SplitN(pair, ":", 2)
 		if len(parts) != 2 {
 			return nil, fmt.Errorf("invalid tag format '%s', expected 'category:value'", pair)
 		}
 
 		tags = append(tags, TagPair{
 			Category: strings.TrimSpace(parts[0]),
 			Value:    strings.TrimSpace(parts[1]),
 		})
 	}
 
 	if len(tags) == 0 {
 		return nil, fmt.Errorf("no valid tags found in query")
 	}
 
 	// Query database for files matching ALL tags
 	return findFilesWithAllTags(tags)
 }
 
 // getFileIDsFromORQuery handles OR-separated tags
 func getFileIDsFromORQuery(query string) ([]int, error) {
 	// Split on " OR " case-insensitively by working on the uppercased copy for
 	// index finding, but extracting substrings from the original query.
 	upperQuery := strings.ToUpper(query)
 	const sep = " OR "
 	var rawPairs []string
 	start := 0
 	for {
 		idx := strings.Index(upperQuery[start:], sep)
 		if idx < 0 {
 			rawPairs = append(rawPairs, query[start:])
 			break
 		}
 		rawPairs = append(rawPairs, query[start:start+idx])
 		start += idx + len(sep)
 	}
 
 	var tags []TagPair
 	for _, pair := range rawPairs {
 		pair = strings.TrimSpace(pair)
 		if pair == "" {
 			continue
 		}
 
 		parts := strings.SplitN(pair, ":", 2)
 		if len(parts) != 2 {
 			return nil, fmt.Errorf("invalid tag format '%s', expected 'category:value'", pair)
 		}
 
 		tags = append(tags, TagPair{
 			Category: strings.TrimSpace(parts[0]),
 			Value:    strings.TrimSpace(parts[1]),
 		})
 	}
 
 	if len(tags) == 0 {
 		return nil, fmt.Errorf("no valid tags found in query")
 	}
 
 	// Query database for files matching ANY tag
 	return findFilesWithAnyTag(tags)
 }
 
 func validateFileIDs(fileIDs []int) ([]File, error) {
 	if len(fileIDs) == 0 {
 		return nil, fmt.Errorf("no file IDs provided")
 	}
 
 	placeholders := make([]string, len(fileIDs))
 	args := make([]interface{}, len(fileIDs))
 	for i, id := range fileIDs {
 		placeholders[i] = "?"
 		args[i] = id
 	}
 
 	query := fmt.Sprintf("SELECT id, filename, path FROM files WHERE id IN (%s) ORDER BY id",
 		strings.Join(placeholders, ","))
 
 	rows, err := db.Query(query, args...)
 	if err != nil {
 		return nil, fmt.Errorf("database error: %v", err)
 	}
 	defer rows.Close()
 
 	var files []File
 	foundIDs := make(map[int]bool)
 
 	for rows.Next() {
 		var f File
 		err := rows.Scan(&f.ID, &f.Filename, &f.Path)
 		if err != nil {
 			return nil, fmt.Errorf("error scanning file: %v", err)
 		}
 		files = append(files, f)
 		foundIDs[f.ID] = true
 	}
 
 	var missingIDs []int
 	for _, id := range fileIDs {
 		if !foundIDs[id] {
 			missingIDs = append(missingIDs, id)
 		}
 	}
 
 	if len(missingIDs) > 0 {
 		return files, fmt.Errorf("file IDs not found: %v", missingIDs)
 	}
 
 	return files, nil
 }
 
 func findFilesWithAnyTag(tags []TagPair) ([]int, error) {
 	if len(tags) == 0 {
 		return nil, fmt.Errorf("no tags specified")
 	}
 
 	// Build query with OR conditions
 	query := `
 		SELECT DISTINCT f.id
 		FROM files f
 		INNER JOIN file_tags ft ON f.id = ft.file_id
 		INNER JOIN tags t ON ft.tag_id = t.id
 		INNER JOIN categories c ON t.category_id = c.id
 		WHERE `
 
 	var conditions []string
 	var args []interface{}
 
 	for _, tag := range tags {
 		conditions = append(conditions, "(c.name = ? AND t.value = ?)")
 		args = append(args, tag.Category, tag.Value)
 	}
 
 	query += strings.Join(conditions, " OR ")
 	query += " ORDER BY f.id"
 
 	rows, err := db.Query(query, args...)
 	if err != nil {
 		return nil, fmt.Errorf("database query failed: %w", err)
 	}
 	defer rows.Close()
 
 	var fileIDs []int
 	for rows.Next() {
 		var id int
 		if err := rows.Scan(&id); err != nil {
 			return nil, fmt.Errorf("scan error: %w", err)
 		}
 		fileIDs = append(fileIDs, id)
 	}
 
 	return fileIDs, rows.Err()
 }
 
 
 func findFilesWithAllTags(tags []TagPair) ([]int, error) {
 	if len(tags) == 0 {
 		return nil, fmt.Errorf("no tags specified")
 	}
 
 	// Build query with subqueries for each tag
 	query := `
 		SELECT f.id
 		FROM files f
 		WHERE `
 
 	var conditions []string
 	var args []interface{}
 
 	for _, tag := range tags {
 		conditions = append(conditions, `
 			EXISTS (
 				SELECT 1 FROM file_tags ft
 				JOIN tags t ON ft.tag_id = t.id
 				JOIN categories c ON t.category_id = c.id
 				WHERE ft.file_id = f.id
 				AND c.name = ?
 				AND t.value = ?
 			)`)
 		args = append(args, tag.Category, tag.Value)
 	}
 
 	query += strings.Join(conditions, " AND ")
 	query += " ORDER BY f.id"
 
 	rows, err := db.Query(query, args...)
 	if err != nil {
 		return nil, fmt.Errorf("database query failed: %w", err)
 	}
 	defer rows.Close()
 
 	var fileIDs []int
 	for rows.Next() {
 		var id int
 		if err := rows.Scan(&id); err != nil {
 			return nil, fmt.Errorf("scan error: %w", err)
 		}
 		fileIDs = append(fileIDs, id)
 	}
 
 	return fileIDs, rows.Err()
 }