mirror of
https://github.com/go-shiori/shiori.git
synced 2024-11-16 14:16:29 +08:00
532 lines
13 KiB
Go
532 lines
13 KiB
Go
package database
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import (
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"database/sql"
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"fmt"
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"github.com/RadhiFadlillah/shiori/model"
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"github.com/jmoiron/sqlx"
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"sort"
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"strconv"
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"strings"
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)
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// SQLiteDatabase is implementation of Database interface for connecting to SQLite3 database.
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type SQLiteDatabase struct {
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sqlx.DB
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}
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// OpenSQLiteDatabase creates and open connection to new SQLite3 database.
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func OpenSQLiteDatabase() (*SQLiteDatabase, error) {
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// Open database and start transaction
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var err error
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db := sqlx.MustConnect("sqlite3", "shiori.db")
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tx := db.MustBegin()
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// Make sure to rollback if panic ever happened
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defer func() {
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if r := recover(); r != nil {
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panicErr, _ := r.(error)
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fmt.Println("Database error:", panicErr)
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tx.Rollback()
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db = nil
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err = panicErr
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}
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}()
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tx.MustExec(`CREATE TABLE IF NOT EXISTS account(
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id INTEGER NOT NULL,
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username TEXT NOT NULL,
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password TEXT NOT NULL,
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CONSTRAINT account_PK PRIMARY KEY(id),
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CONSTRAINT account_username_UNIQUE UNIQUE(username))`)
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tx.MustExec(`CREATE TABLE IF NOT EXISTS bookmark(
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id INTEGER NOT NULL,
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url TEXT NOT NULL,
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title TEXT NOT NULL,
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image_url TEXT NOT NULL DEFAULT "",
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excerpt TEXT NOT NULL DEFAULT "",
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author TEXT NOT NULL DEFAULT "",
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min_read_time INTEGER NOT NULL DEFAULT 0,
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max_read_time INTEGER NOT NULL DEFAULT 0,
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modified TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
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CONSTRAINT bookmark_PK PRIMARY KEY(id),
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CONSTRAINT bookmark_url_UNIQUE UNIQUE(url))`)
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tx.MustExec(`CREATE TABLE IF NOT EXISTS tag(
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id INTEGER NOT NULL,
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name TEXT NOT NULL,
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CONSTRAINT tag_PK PRIMARY KEY(id),
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CONSTRAINT tag_name_UNIQUE UNIQUE(name))`)
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tx.MustExec(`CREATE TABLE IF NOT EXISTS bookmark_tag(
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bookmark_id INTEGER NOT NULL,
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tag_id INTEGER NOT NULL,
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CONSTRAINT bookmark_tag_PK PRIMARY KEY(bookmark_id, tag_id),
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CONSTRAINT bookmark_id_FK FOREIGN KEY(bookmark_id) REFERENCES bookmark(id),
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CONSTRAINT tag_id_FK FOREIGN KEY(tag_id) REFERENCES tag(id))`)
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tx.MustExec(`CREATE VIRTUAL TABLE IF NOT EXISTS bookmark_content USING fts4(title, content, html)`)
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err = tx.Commit()
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checkError(err)
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return &SQLiteDatabase{*db}, err
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}
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// SaveBookmark saves new bookmark to database. Returns new ID and error if any happened.
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func (db *SQLiteDatabase) SaveBookmark(bookmark model.Bookmark) (bookmarkID int64, err error) {
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// Check URL and title
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if bookmark.URL == "" {
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return -1, fmt.Errorf("URL must not empty")
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}
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if bookmark.Title == "" {
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return -1, fmt.Errorf("Title must not empty")
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}
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// Prepare transaction
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tx, err := db.Beginx()
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if err != nil {
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return -1, err
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}
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// Make sure to rollback if panic ever happened
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defer func() {
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if r := recover(); r != nil {
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panicErr, _ := r.(error)
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tx.Rollback()
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bookmarkID = -1
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err = panicErr
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}
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}()
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// Save article to database
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res := tx.MustExec(`INSERT INTO bookmark (
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url, title, image_url, excerpt, author,
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min_read_time, max_read_time)
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VALUES(?, ?, ?, ?, ?, ?, ?)`,
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bookmark.URL,
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bookmark.Title,
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bookmark.ImageURL,
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bookmark.Excerpt,
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bookmark.Author,
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bookmark.MinReadTime,
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bookmark.MaxReadTime)
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// Get last inserted ID
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bookmarkID, err = res.LastInsertId()
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checkError(err)
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// Save bookmark content
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tx.MustExec(`INSERT INTO bookmark_content
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(docid, title, content, html) VALUES (?, ?, ?, ?)`,
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bookmarkID, bookmark.Title, bookmark.Content, bookmark.HTML)
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// Save tags
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stmtGetTag, err := tx.Preparex(`SELECT id FROM tag WHERE name = ?`)
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checkError(err)
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stmtInsertTag, err := tx.Preparex(`INSERT INTO tag (name) VALUES (?)`)
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checkError(err)
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stmtInsertBookmarkTag, err := tx.Preparex(`INSERT OR IGNORE INTO bookmark_tag (tag_id, bookmark_id) VALUES (?, ?)`)
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checkError(err)
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for _, tag := range bookmark.Tags {
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tagName := strings.ToLower(tag.Name)
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tagName = strings.TrimSpace(tagName)
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tagID := int64(-1)
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err = stmtGetTag.Get(&tagID, tagName)
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checkError(err)
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if tagID == -1 {
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res := stmtInsertTag.MustExec(tagName)
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tagID, err = res.LastInsertId()
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checkError(err)
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}
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stmtInsertBookmarkTag.Exec(tagID, bookmarkID)
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}
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// Commit transaction
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err = tx.Commit()
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checkError(err)
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return bookmarkID, err
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}
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// GetBookmarks fetch list of bookmarks based on submitted indices.
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func (db *SQLiteDatabase) GetBookmarks(withContent bool, indices ...string) ([]model.Bookmark, error) {
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// Convert list of index to int
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listIndex := []int{}
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errInvalidIndex := fmt.Errorf("Index is not valid")
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for _, strIndex := range indices {
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if strings.Contains(strIndex, "-") {
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parts := strings.Split(strIndex, "-")
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if len(parts) != 2 {
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return nil, errInvalidIndex
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}
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minIndex, errMin := strconv.Atoi(parts[0])
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maxIndex, errMax := strconv.Atoi(parts[1])
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if errMin != nil || errMax != nil || minIndex < 1 || minIndex > maxIndex {
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return nil, errInvalidIndex
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}
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for i := minIndex; i <= maxIndex; i++ {
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listIndex = append(listIndex, i)
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}
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} else {
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index, err := strconv.Atoi(strIndex)
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if err != nil || index < 1 {
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return nil, errInvalidIndex
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}
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listIndex = append(listIndex, index)
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}
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}
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// Prepare where clause
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args := []interface{}{}
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whereClause := " WHERE 1"
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if len(listIndex) > 0 {
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whereClause = " WHERE id IN ("
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for _, idx := range listIndex {
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args = append(args, idx)
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whereClause += "?,"
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}
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whereClause = whereClause[:len(whereClause)-1]
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whereClause += ")"
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}
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// Fetch bookmarks
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query := `SELECT id,
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url, title, image_url, excerpt, author,
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min_read_time, max_read_time, modified
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FROM bookmark` + whereClause
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bookmarks := []model.Bookmark{}
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err := db.Select(&bookmarks, query, args...)
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if err != nil && err != sql.ErrNoRows {
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return nil, err
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}
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// Fetch tags and contents for each bookmarks
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stmtGetTags, err := db.Preparex(`SELECT t.id, t.name
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FROM bookmark_tag bt LEFT JOIN tag t ON bt.tag_id = t.id
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WHERE bt.bookmark_id = ? ORDER BY t.name`)
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if err != nil {
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return nil, err
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}
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stmtGetContent, err := db.Preparex(`SELECT title, content, html FROM bookmark_content WHERE docid = ?`)
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if err != nil {
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return nil, err
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}
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defer stmtGetTags.Close()
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defer stmtGetContent.Close()
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for i, book := range bookmarks {
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book.Tags = []model.Tag{}
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err = stmtGetTags.Select(&book.Tags, book.ID)
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if err != nil && err != sql.ErrNoRows {
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return nil, err
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}
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err = stmtGetContent.Get(&book, book.ID)
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if err != nil && err != sql.ErrNoRows {
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return nil, err
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}
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bookmarks[i] = book
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}
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return bookmarks, nil
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}
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// DeleteBookmarks removes all record with matching indices from database.
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func (db *SQLiteDatabase) DeleteBookmarks(indices ...string) (oldIndices, newIndices []int, err error) {
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// Convert list of index to int
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listIndex := []int{}
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errInvalidIndex := fmt.Errorf("Index is not valid")
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for _, strIndex := range indices {
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if strings.Contains(strIndex, "-") {
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parts := strings.Split(strIndex, "-")
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if len(parts) != 2 {
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return nil, nil, errInvalidIndex
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}
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minIndex, errMin := strconv.Atoi(parts[0])
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maxIndex, errMax := strconv.Atoi(parts[1])
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if errMin != nil || errMax != nil || minIndex < 1 || minIndex > maxIndex {
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return nil, nil, errInvalidIndex
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}
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for i := minIndex; i <= maxIndex; i++ {
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listIndex = append(listIndex, i)
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}
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} else {
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index, err := strconv.Atoi(strIndex)
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if err != nil || index < 1 {
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return nil, nil, errInvalidIndex
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}
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listIndex = append(listIndex, index)
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}
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}
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// Sort the index
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sort.Ints(listIndex)
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// Create args and where clause
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args := []interface{}{}
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whereClause := " WHERE 1"
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if len(listIndex) > 0 {
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whereClause = " WHERE id IN ("
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for _, idx := range listIndex {
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args = append(args, idx)
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whereClause += "?,"
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}
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whereClause = whereClause[:len(whereClause)-1]
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whereClause += ")"
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}
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// Begin transaction
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tx, err := db.Beginx()
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if err != nil {
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return nil, nil, errInvalidIndex
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}
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// Make sure to rollback if panic ever happened
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defer func() {
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if r := recover(); r != nil {
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panicErr, _ := r.(error)
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tx.Rollback()
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oldIndices = nil
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newIndices = nil
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err = panicErr
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}
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}()
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// Delete bookmarks
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whereTagClause := strings.Replace(whereClause, "id", "bookmark_id", 1)
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whereContentClause := strings.Replace(whereClause, "id", "docid", 1)
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tx.MustExec("DELETE FROM bookmark "+whereClause, args...)
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tx.MustExec("DELETE FROM bookmark_tag "+whereTagClause, args...)
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tx.MustExec("DELETE FROM bookmark_content "+whereContentClause, args...)
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// Prepare statement for updating index
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stmtGetMaxID, err := tx.Preparex(`SELECT IFNULL(MAX(id), 0) FROM bookmark`)
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checkError(err)
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stmtUpdateBookmark, err := tx.Preparex(`UPDATE bookmark SET id = ? WHERE id = ?`)
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checkError(err)
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stmtUpdateBookmarkTag, err := tx.Preparex(`UPDATE bookmark_tag SET bookmark_id = ? WHERE bookmark_id = ?`)
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checkError(err)
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stmtUpdateBookmarkContent, err := tx.Preparex(`UPDATE bookmark_content SET docid = ? WHERE docid = ?`)
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checkError(err)
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// Get list of removed indices
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maxIndex := 0
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err = stmtGetMaxID.Get(&maxIndex)
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checkError(err)
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removedIndices := []int{}
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err = tx.Select(&removedIndices,
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`WITH cnt(x) AS (SELECT 1 UNION ALL SELECT x+1 FROM cnt LIMIT ?)
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SELECT x FROM cnt WHERE x NOT IN (SELECT id FROM bookmark)`,
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maxIndex)
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checkError(err)
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// Fill removed indices
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newIndices = []int{}
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oldIndices = []int{}
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for _, removedIndex := range removedIndices {
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oldIndex := 0
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err = stmtGetMaxID.Get(&oldIndex)
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checkError(err)
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if oldIndex <= removedIndex {
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break
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}
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stmtUpdateBookmark.MustExec(removedIndex, oldIndex)
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stmtUpdateBookmarkTag.MustExec(removedIndex, oldIndex)
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stmtUpdateBookmarkContent.MustExec(removedIndex, oldIndex)
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newIndices = append(newIndices, removedIndex)
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oldIndices = append(oldIndices, oldIndex)
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}
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// Commit transaction
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err = tx.Commit()
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checkError(err)
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return oldIndices, newIndices, err
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}
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// SearchBookmarks search bookmarks by the keyword or tags.
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func (db *SQLiteDatabase) SearchBookmarks(keyword string, tags ...string) ([]model.Bookmark, error) {
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// Create initial variable
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keyword = strings.TrimSpace(keyword)
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whereClause := "WHERE 1"
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args := []interface{}{}
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// Create where clause for keyword
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if keyword != "" {
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whereClause += ` AND id IN (
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SELECT docid id FROM bookmark_content
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WHERE title MATCH ? OR content MATCH ?)`
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args = append(args, keyword, keyword)
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}
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// Create where clause for tags
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if len(tags) > 0 {
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whereTagClause := ` AND id IN (
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SELECT DISTINCT bookmark_id FROM bookmark_tag
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WHERE tag_id IN (SELECT id FROM tag WHERE name IN (`
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for _, tag := range tags {
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args = append(args, tag)
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whereTagClause += "?,"
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}
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whereTagClause = whereTagClause[:len(whereTagClause)-1]
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whereTagClause += ")))"
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whereClause += whereTagClause
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}
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// Search bookmarks
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query := `SELECT id,
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url, title, image_url, excerpt, author,
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min_read_time, max_read_time, modified
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FROM bookmark ` + whereClause
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bookmarks := []model.Bookmark{}
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err := db.Select(&bookmarks, query, args...)
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if err != nil && err != sql.ErrNoRows {
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return nil, err
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}
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// Fetch tags for each bookmarks
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stmtGetTags, err := db.Preparex(`SELECT t.id, t.name
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FROM bookmark_tag bt LEFT JOIN tag t ON bt.tag_id = t.id
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WHERE bt.bookmark_id = ? ORDER BY t.name`)
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if err != nil {
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return nil, err
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}
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defer stmtGetTags.Close()
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for i := range bookmarks {
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tags := []model.Tag{}
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err = stmtGetTags.Select(&tags, bookmarks[i].ID)
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if err != nil && err != sql.ErrNoRows {
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return nil, err
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}
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bookmarks[i].Tags = tags
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}
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return bookmarks, nil
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}
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// UpdateBookmarks updates the saved bookmark in database.
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func (db *SQLiteDatabase) UpdateBookmarks(bookmarks []model.Bookmark) (err error) {
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// Prepare transaction
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tx, err := db.Beginx()
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if err != nil {
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return err
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}
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// Make sure to rollback if panic ever happened
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defer func() {
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if r := recover(); r != nil {
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panicErr, _ := r.(error)
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tx.Rollback()
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err = panicErr
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}
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}()
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// Prepare statement
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stmtUpdateBookmark, err := db.Preparex(`UPDATE bookmark SET
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url = ?, title = ?, image_url = ?, excerpt = ?, author = ?,
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min_read_time = ?, max_read_time = ? WHERE id = ?`)
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checkError(err)
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stmtUpdateBookmarkContent, err := db.Preparex(`UPDATE bookmark_content SET
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title = ?, content = ?, html = ? WHERE docid = ?`)
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checkError(err)
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stmtGetTag, err := tx.Preparex(`SELECT id FROM tag WHERE name = ?`)
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checkError(err)
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stmtInsertTag, err := tx.Preparex(`INSERT INTO tag (name) VALUES (?)`)
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checkError(err)
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stmtInsertBookmarkTag, err := tx.Preparex(`INSERT OR IGNORE INTO bookmark_tag (tag_id, bookmark_id) VALUES (?, ?)`)
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checkError(err)
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stmtDeleteBookmarkTag, err := tx.Preparex(`DELETE FROM bookmark_tag WHERE bookmark_id = ? AND tag_id = ?`)
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checkError(err)
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for _, book := range bookmarks {
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stmtUpdateBookmark.MustExec(
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book.URL,
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book.Title,
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book.ImageURL,
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book.Excerpt,
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book.Author,
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book.MinReadTime,
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book.MaxReadTime,
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book.ID)
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stmtUpdateBookmarkContent.MustExec(
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book.Title,
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book.Content,
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book.HTML,
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book.ID)
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for _, tag := range book.Tags {
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if tag.Deleted {
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stmtDeleteBookmarkTag.MustExec(book.ID, tag.ID)
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continue
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}
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if tag.ID == 0 {
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tagID := int64(-1)
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err = stmtGetTag.Get(&tagID, tag.Name)
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checkError(err)
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if tagID == -1 {
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res := stmtInsertTag.MustExec(tag.Name)
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tagID, err = res.LastInsertId()
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checkError(err)
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}
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stmtInsertBookmarkTag.Exec(tagID, book.ID)
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}
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}
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}
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// Commit transaction
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err = tx.Commit()
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checkError(err)
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return err
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}
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