Replace redis with sqlite

.gitignore

@@ -1,2 +1,3 @@
 .env
 main.log
+jysk.db

db.go

@@ -0,0 +1,77 @@
+package main
+
+import (
+	"database/sql"
+	"fmt"
+	"log"
+	"os"
+	"time"
+
+	_ "github.com/mattn/go-sqlite3"
+)
+
+type DB struct {
+	Ready     bool
+	path      string
+	readConn  *sql.DB
+	writeConn *sql.DB
+}
+
+func (db *DB) Open() error {
+	if db.path == "" {
+		return fmt.Errorf("database path not set")
+	}
+
+	file, err := os.Open(db.path)
+	if err != nil {
+		if os.IsNotExist(err) {
+			log.Printf("Database file does not exist at %s, creating", db.path)
+			file, err := os.Create(db.path)
+			if err != nil {
+				return fmt.Errorf("failed to create database file: %v", err)
+			}
+			log.Printf("Database created at %s", db.path)
+			file.Close()
+		} else {
+			return fmt.Errorf("failed to open database file: %v", err)
+		}
+	}
+	file.Close()
+
+	writeConn, err := sql.Open("sqlite3", db.path+"?_journal=WAL&_synchronous=NORMAL")
+	if err != nil {
+		Error.Printf("%++v", err)
+		return err
+	}
+	writeConn.SetMaxOpenConns(1)
+	writeConn.SetConnMaxIdleTime(30 * time.Second)
+	writeConn.SetConnMaxLifetime(30 * time.Second)
+	db.writeConn = writeConn
+
+	readConn, err := sql.Open("sqlite3", db.path+"?mode=ro&_journal=WAL&_synchronous=NORMAL&_mode=ro")
+	if err != nil {
+		Error.Printf("%++v", err)
+		return err
+	}
+	readConn.SetMaxOpenConns(4)
+	readConn.SetConnMaxIdleTime(30 * time.Second)
+	readConn.SetConnMaxLifetime(30 * time.Second)
+	db.readConn = readConn
+
+	db.Ready = true
+	return nil
+}
+
+func (db *DB) Close() error {
+	err := db.writeConn.Close()
+	if err != nil {
+		return err
+	}
+
+	err = db.readConn.Close()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

go.mod

@@ -4,13 +4,10 @@ go 1.23.0
 
 require (
 	github.com/PuerkitoBio/goquery v1.9.2
-	github.com/joho/godotenv v1.5.1
+	github.com/mattn/go-sqlite3 v1.14.22
-	github.com/redis/go-redis/v9 v9.6.1
 )
 
 require (
 	github.com/andybalholm/cascadia v1.3.2 // indirect
-	github.com/cespare/xxhash/v2 v2.2.0 // indirect
-	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	golang.org/x/net v0.24.0 // indirect
 )

go.sum

@@ -2,18 +2,8 @@ github.com/PuerkitoBio/goquery v1.9.2 h1:4/wZksC3KgkQw7SQgkKotmKljk0M6V8TUvA8Wb4
 github.com/PuerkitoBio/goquery v1.9.2/go.mod h1:GHPCaP0ODyyxqcNoFGYlAprUFH81NuRPd0GX3Zu2Mvk=
 github.com/andybalholm/cascadia v1.3.2 h1:3Xi6Dw5lHF15JtdcmAHD3i1+T8plmv7BQ/nsViSLyss=
 github.com/andybalholm/cascadia v1.3.2/go.mod h1:7gtRlve5FxPPgIgX36uWBX58OdBsSS6lUvCFb+h7KvU=
-github.com/bsm/ginkgo/v2 v2.12.0 h1:Ny8MWAHyOepLGlLKYmXG4IEkioBysk6GpaRTLC8zwWs=
+github.com/mattn/go-sqlite3 v1.14.22 h1:2gZY6PC6kBnID23Tichd1K+Z0oS6nE/XwU+Vz/5o4kU=
-github.com/bsm/ginkgo/v2 v2.12.0/go.mod h1:SwYbGRRDovPVboqFv0tPTcG1sN61LM1Z4ARdbAV9g4c=
+github.com/mattn/go-sqlite3 v1.14.22/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
-github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=
-github.com/bsm/gomega v1.27.10/go.mod h1:JyEr/xRbxbtgWNi8tIEVPUYZ5Dzef52k01W3YH0H+O0=
-github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
-github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
-github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
-github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
-github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
-github.com/redis/go-redis/v9 v9.6.1 h1:HHDteefn6ZkTtY5fGUE8tj8uy85AHk6zP7CpzIAM0y4=
-github.com/redis/go-redis/v9 v9.6.1/go.mod h1:0C0c6ycQsdpVNQpxb1njEQIqkx5UcsM8FJCQLgE9+RA=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=

main.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"context"
 	"fmt"
 	"io"
 	"log"
@@ -9,14 +8,9 @@ import (
 	"os"
 	"regexp"
 	"strconv"
-	"strings"
 	"time"
 
-	_ "embed"
-
 	"github.com/PuerkitoBio/goquery"
-	"github.com/joho/godotenv"
-	"github.com/redis/go-redis/v9"
 )
 
 var Error *log.Logger
@@ -40,65 +34,22 @@ func init() {
 		log.Lmicroseconds|log.Lshortfile)
 }
 
-//go:embed .env
-var env string
-
-var ctx = context.Background()
-var rdb *redis.Client
 var priceRegex = regexp.MustCompile(`\d+`)
 
 const url = "https://jysk.hr/spavaca-soba/madraci/madraci-s-oprugama/madrac-s-oprugama-140x200-gold-s110-dreamzone"
 
 func main() {
-	envvar, err := godotenv.Parse(strings.NewReader(env))
+	db := DB{path: "jysk.db"}
+	err := db.Open()
 	if err != nil {
-		Error.Fatalf("Error parsing .env file: %v", err)
+		Error.Fatalf("Error opening database: %v", err)
-		os.Exit(1)
-	}
-
-	redisHost, ok := envvar["REDIS_HOST"]
-	if !ok {
-		Error.Fatalf("REDIS_HOST not set in .env file")
-		return
-	}
-	redisPassword, ok := envvar["REDIS_PASSWORD"]
-	if !ok {
-		Error.Fatalf("REDIS_PASSWORD not set in .env file")
 		return
 	}
+	defer db.Close()
 
-	rdb = redis.NewClient(&redis.Options{
+	price := Price{
-		Addr:     redisHost,
+		Price:     100,
-		Password: redisPassword,
+		Timestamp: time.Now(),
-		DB:       0,
-	})
-
-	// rdb.ZAdd(ctx)
-
-	// err = rdb.Set(ctx, "key", "value", 0).Err()
-	// if err != nil {
-	// 	panic(err)
-	// }
-
-	// val, err := rdb.Get(ctx, "key").Result()
-	// if err != nil {
-	// 	panic(err)
-	// }
-	// fmt.Println("key", val)
-
-	// val2, err := rdb.Get(ctx, "key2").Result()
-	// if err == redis.Nil {
-	// 	fmt.Println("key2 does not exist")
-	// } else if err != nil {
-	// 	panic(err)
-	// } else {
-	// 	fmt.Println("key2", val2)
-	// }
-
-	price, err := GetPrice()
-	if err != nil {
-		Error.Fatalf("Error getting price: %v", err)
-		return
 	}
 	log.Printf("%#v", price)
 }
@@ -142,3 +93,7 @@ func GetPrice() (Price, error) {
 
 	return price, nil
 }
+
+func SavePrice(price Price) error {
+	return nil
+}