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package db
import (
"database/sql"
"fmt"
_ "github.com/mattn/go-sqlite3"
"log"
"os"
)
var db *sql.DB
var err error
func init() {
if isExist("./keybase.db") {
db, err = sql.Open("sqlite3", "./keybase.db")
if err != nil {
log.Fatal(err)
}
}else{
db, err = sql.Open("sqlite3", "./keybase.db")
if err != nil {
log.Fatal(err)
}
sqlStmt := `
create table keywords (id integer PRIMARY KEY autoincrement,keyword text, url text);
`
_, err = db.Exec(sqlStmt)
if err != nil {
log.Printf("%q: %s\n", err, sqlStmt)
return
}
}
}
func isExist(path string)(bool){
_, err := os.Stat(path)
if err != nil{
if os.IsExist(err){
return true
}
if os.IsNotExist(err){
return false
}
fmt.Println(err)
return false
}
return true
}
func AddKeyword(keyword,url string) {
tx, err := db.Begin()
if err != nil {
log.Fatal(err)
}
stmt, err := tx.Prepare("insert into keywords(keyword, url) values(?, ?)")
if err != nil {
log.Fatal(err)
}
defer stmt.Close()
_, err = stmt.Exec(keyword, url)
tx.Commit()
}
func QueryKey(keyword string) string {
stmt, err := db.Prepare("select url from keywords where keyword = ?")
if err != nil {
log.Fatal(err)
return ""
}
defer stmt.Close()
var url string
err = stmt.QueryRow(keyword).Scan(&url)
if err != nil {
log.Fatal(err)
return ""
}
fmt.Println(url)
return url
}
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