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db.go
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db.go
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package database
import (
"fmt"
_ "github.com/mattn/go-sqlite3"
dbBase "github.com/gameraccoon/telegram-bot-skeleton/database"
"log"
"sync"
)
type SpyBotDb struct {
db dbBase.Database
mutex sync.Mutex
}
func init() {
log.SetFlags(log.LstdFlags | log.Lshortfile)
}
func ConnectDb(path string) (database *SpyBotDb, err error) {
database = &SpyBotDb{}
err = database.db.Connect(path)
if err != nil {
return
}
// database.db.Exec("PRAGMA foreign_keys = ON")
database.db.Exec("CREATE TABLE IF NOT EXISTS" +
" global_vars(name TEXT PRIMARY KEY" +
",integer_value INTEGER" +
",string_value TEXT" +
")")
database.db.Exec("CREATE TABLE IF NOT EXISTS" +
" sessions(id INTEGER NOT NULL PRIMARY KEY" +
",token TEXT NOT NULL" +
")")
database.db.Exec("CREATE TABLE IF NOT EXISTS" +
" users(id INTEGER NOT NULL PRIMARY KEY" +
",chat_id INTEGER UNIQUE NOT NULL" +
",language TEXT NOT NULL" +
// session related data
",current_session INTEGER" +
",current_session_message INTEGER" +
",theme TEXT" +
",is_theme_revealed INTEGER" +
// ",FOREIGN KEY(current_session) REFERENCES sessions(id) ON DELETE SET NULL" +
")")
database.db.Exec("CREATE UNIQUE INDEX IF NOT EXISTS" +
" chat_id_index ON users(chat_id)")
database.db.Exec("CREATE UNIQUE INDEX IF NOT EXISTS" +
" token_index ON sessions(token)")
database.db.Exec("CREATE INDEX IF NOT EXISTS" +
" current_session_index ON users(current_session)")
return
}
func (database *SpyBotDb) IsConnectionOpened() bool {
database.mutex.Lock()
defer database.mutex.Unlock()
return database.db.IsConnectionOpened()
}
func (database *SpyBotDb) Disconnect() {
database.mutex.Lock()
defer database.mutex.Unlock()
database.db.Disconnect()
}
func (database *SpyBotDb) GetDatabaseVersion() (version string) {
database.mutex.Lock()
defer database.mutex.Unlock()
rows, err := database.db.Query("SELECT string_value FROM global_vars WHERE name='version'")
if err != nil {
log.Fatal(err.Error())
}
defer rows.Close()
if rows.Next() {
err := rows.Scan(&version)
if err != nil {
log.Fatal(err.Error())
}
} else {
// that means it's a new clean database
version = latestVersion
}
return
}
func (database *SpyBotDb) SetDatabaseVersion(version string) {
database.mutex.Lock()
defer database.mutex.Unlock()
database.db.Exec("DELETE FROM global_vars WHERE name='version'")
safeVersion := dbBase.SanitizeString(version)
database.db.Exec(fmt.Sprintf("INSERT INTO global_vars (name, string_value) VALUES ('version', '%s')", safeVersion))
}
func (database *SpyBotDb) GetUserId(chatId int64, userLangCode string) (userId int64) {
database.mutex.Lock()
defer database.mutex.Unlock()
database.db.Exec(fmt.Sprintf("INSERT OR IGNORE INTO users(chat_id, language) "+
"VALUES (%d, '%s')", chatId, userLangCode))
rows, err := database.db.Query(fmt.Sprintf("SELECT id FROM users WHERE chat_id=%d", chatId))
if err != nil {
log.Fatal(err.Error())
return
}
defer rows.Close()
if rows.Next() {
err := rows.Scan(&userId)
if err != nil {
log.Fatal(err.Error())
}
} else {
err = rows.Err()
if err != nil {
log.Fatal(err)
}
log.Fatal("No user found")
}
return
}
func (database *SpyBotDb) GetChatId(userId int64) (chatId int64) {
database.mutex.Lock()
defer database.mutex.Unlock()
rows, err := database.db.Query(fmt.Sprintf("SELECT chat_id FROM users WHERE id=%d", userId))
if err != nil {
log.Fatal(err.Error())
return
}
defer rows.Close()
if rows.Next() {
err := rows.Scan(&chatId)
if err != nil {
log.Fatal(err.Error())
}
} else {
err = rows.Err()
if err != nil {
log.Fatal(err)
}
log.Fatal("No user found")
}
return
}
func (database *SpyBotDb) GetUserChatId(userId int64) (chatId int64) {
database.mutex.Lock()
defer database.mutex.Unlock()
rows, err := database.db.Query(fmt.Sprintf("SELECT chat_id FROM users WHERE id=%d", userId))
if err != nil {
log.Fatal(err.Error())
return
}
defer rows.Close()
if rows.Next() {
err := rows.Scan(&chatId)
if err != nil {
log.Fatal(err.Error())
}
} else {
err = rows.Err()
if err != nil {
log.Fatal(err)
}
log.Fatal("No user found")
}
return
}
func (database *SpyBotDb) getLastInsertedItemId() (id int64) {
rows, err := database.db.Query("SELECT last_insert_rowid()")
if err != nil {
log.Fatal(err.Error())
}
defer rows.Close()
if rows.Next() {
err := rows.Scan(&id)
if err != nil {
log.Fatal(err.Error())
}
return
} else {
err = rows.Err()
if err != nil {
log.Fatal(err)
}
log.Fatal("No item found")
}
return -1
}
func (database *SpyBotDb) SetUserLanguage(userId int64, language string) {
database.mutex.Lock()
defer database.mutex.Unlock()
database.db.Exec(fmt.Sprintf("UPDATE OR ROLLBACK users SET language='%s' WHERE id=%d", language, userId))
}
func (database *SpyBotDb) GetUserLanguage(userId int64) (language string) {
database.mutex.Lock()
defer database.mutex.Unlock()
rows, err := database.db.Query(fmt.Sprintf("SELECT language FROM users WHERE id=%d AND language IS NOT NULL", userId))
if err != nil {
log.Fatal(err.Error())
}
defer rows.Close()
if rows.Next() {
err := rows.Scan(&language)
if err != nil {
log.Fatal(err.Error())
}
} else {
err = rows.Err()
if err != nil {
log.Fatal(err)
}
// empty language
}
return
}
func (database *SpyBotDb) GetUserSession(userId int64) (sessionId int64, isInSession bool) {
database.mutex.Lock()
defer database.mutex.Unlock()
rows, err := database.db.Query(fmt.Sprintf("SELECT current_session FROM users WHERE id=%d AND current_session IS NOT NULL", userId))
if err != nil {
log.Fatal(err.Error())
}
defer rows.Close()
if rows.Next() {
err := rows.Scan(&sessionId)
if err != nil {
log.Fatal(err.Error())
} else {
isInSession = true
}
} else {
err = rows.Err()
if err != nil {
log.Fatal(err)
}
}
return
}
func (database *SpyBotDb) DoesSessionExist(sessionId int64) (isExists bool) {
database.mutex.Lock()
defer database.mutex.Unlock()
rows, err := database.db.Query(fmt.Sprintf("SELECT 1 FROM sessions WHERE id=%d LIMIT 1", sessionId))
if err != nil {
log.Fatal(err.Error())
}
defer rows.Close()
isExists = rows.Next();
return
}
func (database *SpyBotDb) CreateSession(userId int64) (sessionId int64, previousSessionId int64, wasInSession bool) {
previousSessionId, wasInSession = database.LeaveSession(userId)
database.mutex.Lock()
defer database.mutex.Unlock()
database.db.Exec("INSERT INTO sessions (token) VALUES (strftime('%s', 'now') || '-' || abs(random() % 100000))")
sessionId = database.getLastInsertedItemId()
database.db.Exec(fmt.Sprintf("UPDATE OR ROLLBACK users SET current_session=%d WHERE id=%d", sessionId, userId))
return
}
func (database *SpyBotDb) ConnectToSession(userId int64, sessionId int64) (isSucceeded bool, previousSessionId int64, wasInSession bool) {
if !database.DoesSessionExist(sessionId) {
return
}
previousSessionId, wasInSession = database.LeaveSession(userId)
database.mutex.Lock()
defer database.mutex.Unlock()
database.db.Exec(fmt.Sprintf("UPDATE OR ROLLBACK users SET current_session=%d WHERE id=%d", sessionId, userId))
isSucceeded = true
return
}
func (database *SpyBotDb) GetUsersCountInSession(sessionId int64) (usersCount int64) {
database.mutex.Lock()
defer database.mutex.Unlock()
rows, err := database.db.Query(fmt.Sprintf("SELECT COUNT(*) FROM users WHERE current_session=%d", sessionId))
if err != nil {
log.Fatal(err.Error())
}
defer rows.Close()
if rows.Next() {
err := rows.Scan(&usersCount)
if err != nil {
log.Fatal(err.Error())
}
} else {
err = rows.Err()
if err != nil {
log.Fatal(err)
}
}
return
}
func (database *SpyBotDb) GetUsersInSession(sessionId int64) (users []int64) {
database.mutex.Lock()
defer database.mutex.Unlock()
rows, err := database.db.Query(fmt.Sprintf("SELECT id FROM users WHERE current_session=%d", sessionId))
if err != nil {
log.Fatal(err.Error())
}
defer rows.Close()
for rows.Next() {
var userId int64
err := rows.Scan(&userId)
if err != nil {
log.Fatal(err.Error())
}
users = append(users, userId)
}
return
}
func (database *SpyBotDb) LeaveSession(userId int64) (sessionId int64, wasInSession bool) {
sessionId, wasInSession = database.GetUserSession(userId)
if !wasInSession {
return
}
database.mutex.Lock()
defer database.mutex.Unlock()
database.db.Exec(fmt.Sprintf("UPDATE OR ROLLBACK users SET current_session=NULL, theme=NULL, is_theme_revealed=NULL WHERE id=%d", userId))
// delete session if it's empty
database.mutex.Unlock()
if database.GetUsersCountInSession(sessionId) == 0 {
database.mutex.Lock()
database.db.Exec(fmt.Sprintf("DELETE FROM sessions WHERE id=%d", sessionId))
database.mutex.Unlock()
}
database.mutex.Lock()
return
}
func (database *SpyBotDb) SetSessionMessageId(userId int64, messageId int64) {
database.mutex.Lock()
defer database.mutex.Unlock()
database.db.Exec(fmt.Sprintf("UPDATE OR ROLLBACK users SET current_session_message=%d WHERE id=%d", messageId, userId))
}
func (database *SpyBotDb) GetSessionMessageId(userId int64) (messageId int64) {
database.mutex.Lock()
defer database.mutex.Unlock()
rows, err := database.db.Query(fmt.Sprintf("SELECT current_session_message FROM users WHERE id=%d AND current_session_message IS NOT NULL", userId))
if err != nil {
log.Fatal(err.Error())
}
defer rows.Close()
if rows.Next() {
err := rows.Scan(&messageId)
if err != nil {
log.Fatal(err.Error())
}
} else {
err = rows.Err()
if err != nil {
log.Fatal(err)
}
}
return
}
func (database *SpyBotDb) GetSessionIdFromToken(token string) (sessionId int64, isFound bool) {
database.mutex.Lock()
defer database.mutex.Unlock()
rows, err := database.db.Query(fmt.Sprintf("SELECT id FROM sessions WHERE token='%s' LIMIT 1", dbBase.SanitizeString(token)))
if err != nil {
log.Fatal(err.Error())
}
defer rows.Close()
if rows.Next() {
err := rows.Scan(&sessionId)
if err != nil {
log.Fatal(err.Error())
} else {
isFound = true
}
} else {
err = rows.Err()
if err != nil {
log.Fatal(err)
}
}
return
}
func (database *SpyBotDb) GetTokenFromSessionId(sessionId int64) (token string, isFound bool) {
database.mutex.Lock()
defer database.mutex.Unlock()
rows, err := database.db.Query(fmt.Sprintf("SELECT token FROM sessions WHERE id=%d LIMIT 1", sessionId))
if err != nil {
log.Fatal(err.Error())
}
defer rows.Close()
if rows.Next() {
err := rows.Scan(&token)
if err != nil {
log.Fatal(err.Error())
} else {
isFound = true
}
} else {
err = rows.Err()
if err != nil {
log.Fatal(err)
}
}
return
}
func (database *SpyBotDb) SetUserTheme(userId int64, theme string) {
database.mutex.Lock()
defer database.mutex.Unlock()
database.db.Exec(fmt.Sprintf("UPDATE OR ROLLBACK users SET theme='%s' WHERE id=%d", dbBase.SanitizeString(theme), userId))
return
}
func (database *SpyBotDb) GetUserTheme(userId int64) (theme string) {
database.mutex.Lock()
defer database.mutex.Unlock()
rows, err := database.db.Query(fmt.Sprintf("SELECT theme FROM users WHERE id=%d AND theme IS NOT NULL", userId))
if err != nil {
log.Fatal(err.Error())
}
defer rows.Close()
if rows.Next() {
err := rows.Scan(&theme)
if err != nil {
log.Fatal(err.Error())
}
} else {
err = rows.Err()
if err != nil {
log.Fatal(err)
}
}
return
}
func (database *SpyBotDb) IsThemeRevealed(userId int64) (isRevealed bool) {
database.mutex.Lock()
defer database.mutex.Unlock()
rows, err := database.db.Query(fmt.Sprintf("SELECT 1 FROM users WHERE id=%d AND is_theme_revealed = 1 LIMIT 1", userId))
if err != nil {
log.Fatal(err.Error())
}
defer rows.Close()
isRevealed = rows.Next();
return
}
func (database *SpyBotDb) SetThemeRevealed(userId int64, isRevealed bool) {
database.mutex.Lock()
defer database.mutex.Unlock()
isRevealedInt := 0
if isRevealed {
isRevealedInt = 1
}
database.db.Exec(fmt.Sprintf("UPDATE OR ROLLBACK users SET is_theme_revealed=%d WHERE id=%d", isRevealedInt, userId))
return
}