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db.go
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db.go
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package store
import (
"database/sql"
"fmt"
"github.com/vearne/passwordbox/model"
slog "github.com/vearne/simplelog"
)
func CreateTable(db *sql.DB) error {
var err error
// table item
sqlStmt := `
CREATE TABLE Item (
id INTEGER PRIMARY KEY,
title TEXT,
IVCiphertext TEXT NOT NULL
);
`
_, err = db.Exec(sqlStmt)
if err != nil {
slog.Error("%q: %s", err, sqlStmt)
return err
}
// table meta
sqlStmt = `
CREATE TABLE meta (
id INTEGER PRIMARY KEY,
hint TEXT
);
`
_, err = db.Exec(sqlStmt)
if err != nil {
slog.Error("%q: %s", err, sqlStmt)
return err
}
return nil
}
func InsertHint(db *sql.DB, hint string) error {
tx, err := db.Begin()
if err != nil {
slog.Error("InsertHint, %v", err)
return err
}
stmt, err := tx.Prepare("insert into meta(id, hint) values(?, ?)")
if err != nil {
slog.Error("InsertHint, %v", err)
return err
}
defer stmt.Close()
_, err = stmt.Exec(0, hint)
if err != nil {
slog.Error("InsertHint, %v", err)
return err
}
return tx.Commit()
}
func InsertItem(db *sql.DB, item *model.SimpleItem) error {
tx, err := db.Begin()
if err != nil {
slog.Error("InsertItem, %v", err)
return err
}
stmt, err := tx.Prepare("INSERT INTO item (title, IVCiphertext) VALUES(?, ?)")
if err != nil {
slog.Error("InsertItem, %v", err)
return err
}
defer stmt.Close()
_, err = stmt.Exec(item.Title, item.IVCiphertext)
if err != nil {
slog.Error("InsertItem, %v", err)
return err
}
return tx.Commit()
}
func UpdateItem(db *sql.DB, item *model.SimpleItem) error {
tx, err := db.Begin()
if err != nil {
slog.Error("UpdateItem, %v", err)
return err
}
query := "update item set title = ?, IVCiphertext = ? where id = ?"
stmt, err := tx.Prepare(query)
if err != nil {
slog.Error("UpdateItem, %v", err)
return err
}
defer stmt.Close()
_, err = stmt.Exec(item.Title, item.IVCiphertext, item.ID)
if err != nil {
slog.Error("UpdateItem, %v", err)
return err
}
return tx.Commit()
}
func CountItems(db *sql.DB, keyword string) (int, error) {
query := fmt.Sprintf("select count(*) from item where title like %q",
"%"+keyword+"%")
stmt, err := db.Prepare(query)
if err != nil {
slog.Error("Get, %v", err)
return -1, err
}
defer stmt.Close()
var total int
err = stmt.QueryRow().Scan(&total)
if err != nil {
slog.Error("Get, %v", err)
return 0, err
}
return total, nil
}
func DeleteItem(db *sql.DB, itemId int) error {
tx, err := db.Begin()
if err != nil {
slog.Error("UpdateItem, %v", err)
return err
}
stmt, err := tx.Prepare("delete from item where id = ?")
if err != nil {
slog.Error("DeleteItem, %v", err)
return err
}
defer stmt.Close()
_, err = stmt.Exec(itemId)
if err != nil {
slog.Error("DeleteItem, %v", err)
return err
}
return tx.Commit()
}
func Query(db *sql.DB, keyword string, pageId, pageSize int) ([]*model.SimpleItem, error) {
query := "select id, title, IVCiphertext from item where title like %q limit %d, %d"
query = fmt.Sprintf(query, "%"+keyword+"%", (pageId-1)*pageSize, pageSize)
slog.Debug("sql:%v", query)
rows, err := db.Query(query)
if err != nil {
slog.Error("query, %v", err)
return nil, err
}
result := make([]*model.SimpleItem, 0)
defer rows.Close()
for rows.Next() {
var id int
var title string
var IVCiphertext string
err = rows.Scan(&id, &title, &IVCiphertext)
if err != nil {
slog.Error("query, %v", err)
return nil, err
}
result = append(result, &model.SimpleItem{ID: id,
Title: title, IVCiphertext: IVCiphertext})
}
return result, nil
}
func GetItem(db *sql.DB, itemId int) (*model.SimpleItem, error) {
stmt, err := db.Prepare("select id, title, IVCiphertext from item where id = ?")
if err != nil {
slog.Error("Get, %v", err)
return nil, err
}
defer stmt.Close()
item := model.SimpleItem{}
err = stmt.QueryRow(itemId).Scan(&item.ID, &item.Title, &item.IVCiphertext)
if err != nil {
slog.Error("Get, %v", err)
return nil, err
}
return &item, nil
}
func GetHint(db *sql.DB) (string, error) {
stmt, err := db.Prepare("select hint from meta where id = ?")
if err != nil {
slog.Error("Get, %v", err)
return "", err
}
defer stmt.Close()
var hint string
err = stmt.QueryRow(0).Scan(&hint)
if err != nil {
slog.Error("Get, %v", err)
return "", err
}
return hint, nil
}