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operater.go
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operater.go
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package database
import (
//"database/sql"
"errors"
"github.com/jmoiron/sqlx"
)
type UrlVar struct {
Rid int `db:"rid"`
Url string `db:"url"`
CreateTimestamp int `db:"create_timestamp"`
LastTimestamp int `db:"last_timestamp"`
Uid int `db:"uid"`
LastStatusCode int `db:"last_statuscode"`
LastStatus string `db:"last_status"`
}
type UserVar struct {
Uid int `db:"uid"`
TelegramId int `db:"telegram_id"`
StartTimestamp int `db:"start_timestamp"`
LastTimestamp int `db:"last_timestamp"`
}
func UrlExists(db * sqlx.DB, url string, uid int) bool {
sqlStmt := "SELECT * FROM url WHERE `url` = ? AND `uid` = ?"
count := 0
rows, err := db.Query(sqlStmt, url, uid)
if err != nil {
return true
}
for rows.Next() { // Can I just check if rows is non-zero somehow?
count++
}
return count != 0
}
func UserExists(db * sqlx.DB, telegram_id int) bool {
sqlStmt := "SELECT * FROM user WHERE `telegram_id` = ?"
count := 0
rows, err := db.Query(sqlStmt, telegram_id)
if err != nil {
return true
}
for rows.Next() { // Can I just check if rows is non-zero somehow?
count++
}
return count != 0
}
func GetUserInfoViaTelegramId(db *sqlx.DB, telegram_id int) (*UserVar, error) {
searchSQL := "SELECT * FROM user WHERE `telegram_id` = ? LIMIT 1"
rows, err := db.Queryx(searchSQL, telegram_id)
if err != nil {
return nil, err
}
defer rows.Close()
var result UserVar
rows.Next()
err = rows.StructScan(&result)
if err != nil {
return nil, err
}
return &result, nil
}
func GetUserInfoViaUid(db *sqlx.DB, uid int) (*UserVar, error) {
searchSQL := "SELECT * FROM user WHERE `uid` = ? LIMIT 1"
rows, err := db.Queryx(searchSQL, uid)
if err != nil {
return nil, err
}
defer rows.Close()
var result UserVar
rows.Next()
err = rows.StructScan(&result)
if err != nil {
return nil, err
}
return &result, nil
}
func GetUidViaTelegramId(db *sqlx.DB, telegram_id int) (int, error) {
userInfo, err := GetUserInfoViaTelegramId(db, telegram_id)
if err != nil {
return 0, err
}
return userInfo.Uid, nil
}
func GetTelegramIdViaUid(db *sqlx.DB, uid int) (int, error) {
userInfo, err := GetUserInfoViaUid(db, uid)
if err != nil {
return 0, err
}
return userInfo.TelegramId, nil
}
func (uv *UserVar) InsertUser(db *sqlx.DB) error {
if UserExists(db, uv.TelegramId) {
return errors.New("user was exists.")
}
insertSQL := `INSERT INTO user (telegram_id,start_timestamp,last_timestamp) VALUES (?,?,?); `
statement, err := db.Prepare(insertSQL)
if err != nil {
return err
}
_, err = statement.Exec(uv.TelegramId, timestampNano(), timestampNano())
if err != nil {
return err
}
return nil
}
func (uv *UrlVar) InsertUrl(db *sqlx.DB) error {
if len(uv.Url) > 256 {
return errors.New("url length more then 256.")
}
if UrlExists(db, uv.Url, uv.Uid) {
return errors.New("url was exists.")
}
insertSQL := `INSERT INTO url (url,create_timestamp,last_timestamp,uid,last_statuscode,last_status) VALUES (?, ?, ?, ?, 200, '200 OK'); `
statement, err := db.Prepare(insertSQL)
if err != nil {
return err
}
_, err = statement.Exec(uv.Url, timestampNano(), timestampNano(), uv.Uid)
if err != nil {
return err
}
return nil
}
func UpdateLastTimestamp(db *sqlx.DB, rid int) error {
updateSQL := "UPDATE user SET `last_timestamp`=? WHERE `rid` = ?"
_, err := db.Exec(updateSQL, timestampNano(), rid)
if err != nil {
return err
}
return nil
}
func UpdateLastStatus(db *sqlx.DB, last_status string, rid int) error {
updateSQL := "UPDATE url SET `last_status` = ? WHERE `rid` = ?"
_, err := db.Exec(updateSQL, last_status, rid)
if err != nil {
return err
}
return nil
}
func UpdateLastStatusCode(db *sqlx.DB, last_statuscode, rid int) error {
updateSQL := "UPDATE url SET `last_statuscode` = ? WHERE `rid` = ?"
_, err := db.Exec(updateSQL, last_statuscode, rid)
if err != nil {
return err
}
return nil
}
func DeleteUrl(db *sqlx.DB, url string, uid int) error {
deleteSQL := "DELETE FROM url WHERE `url` = ? AND `uid` = ?"
_, err := db.Exec(deleteSQL, url, uid)
if err != nil {
return err
}
return nil
}
func DeleteUrls(db *sqlx.DB, uid int) error {
deleteSQL := "DELETE FROM url WHERE `uid` = ?"
_, err := db.Exec(deleteSQL, uid)
if err != nil {
return err
}
return nil
}
func GetUrlsViaUid(db *sqlx.DB, uid int) (*[]UrlVar, error) {
searchSQL := "SELECT * FROM url WHERE `uid` = ?"
rows, err := db.Queryx(searchSQL, uid)
if err != nil {
return nil, err
}
defer rows.Close()
var result []UrlVar
for rows.Next() { // Iterate and fetch the records from result cursor
var item UrlVar
err := rows.StructScan(&item)
if err != nil {
return nil, err
}
result = append(result, item)
}
return &result, nil
}
func GetUrls(db *sqlx.DB) (*[]UrlVar, error) {
searchSQL := "SELECT * FROM url"
rows, err := db.Queryx(searchSQL)
if err != nil {
return nil, err
}
defer rows.Close()
var result []UrlVar
for rows.Next() { // Iterate and fetch the records from result cursor
var item UrlVar
err := rows.StructScan(&item)
if err != nil {
return nil, err
}
result = append(result, item)
}
return &result, nil
}
func CreateTable(db *sqlx.DB, create_sql string) error {
statement, err := db.Prepare(create_sql) // Prepare SQL Statement
if err != nil {
return err
}
statement.Exec() // Execute SQL Statements
return nil
}