Adding the database + README

.gitignore

@@ -1,6 +1,7 @@
 pkg/
 .go/
 .vscode/
+bin/
 
 config.json
 chromagies

README.md

@@ -0,0 +1,14 @@
+# Chromagies
+
+## Database setup
+
+Create database : CREATE DATABASE 'DATABASE_NAME';
+
+Replace DATABASE_NAME with yours.
+
+Create user : CREATE USER 'DATABASE_USER'@'localhost' IDENTIFIED BY 'A_VERY_BAD_PASSWORD'
+
+Replace DATABASE_USER and A_VERY_BAD_PASSWORD by yours.
+
+Give permissions to user : GRANT SELECT, INSERT, CREATE, DELETE, UPDATE, DROP, EXECUTE ON 'DATABASE_NAME' TO 'DATABASE_USER'@'localhost';
+

go.mod

@@ -2,4 +2,8 @@ module chromagies
 
 go 1.24.2
 
-require github.com/gorilla/mux v1.8.1
+require (
+	github.com/gorilla/mux v1.8.1
+	filippo.io/edwards25519 v1.1.0
+	github.com/go-sql-driver/mysql v1.9.2
+)

go.sum

@@ -1,2 +1,6 @@
+filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
+filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
+github.com/go-sql-driver/mysql v1.9.2 h1:4cNKDYQ1I84SXslGddlsrMhc8k4LeDVj6Ad6WRjiHuU=
+github.com/go-sql-driver/mysql v1.9.2/go.mod h1:qn46aNg1333BRMNU69Lq93t8du/dwxI64Gl8i5p1WMU=
 github.com/gorilla/mux v1.8.1 h1:TuBL49tXwgrFYWhqrNgrUNEY92u81SPhu7sTdzQEiWY=
 github.com/gorilla/mux v1.8.1/go.mod h1:AKf9I4AEqPTmMytcMc0KkNouC66V3BtZ4qD5fmWSiMQ=

main.go

@@ -3,6 +3,7 @@ package main
 import (
 	"chromagies/src/api"
 	"chromagies/src/config"
+	"chromagies/src/database"
 	"fmt"
 	"log"
 	"net/http"
@@ -28,6 +29,7 @@ func main() {
 	initConfig()
 	startLogger()
 
+	database.Init()
 	initRouter()
 
 	stopTime := time.Now()

src/database/database.go

@@ -4,27 +4,52 @@ import (
 	"chromagies/src/config"
 	"database/sql"
 	"fmt"
+	"log"
+
+	_ "github.com/go-sql-driver/mysql"
 )
 
 var db *sql.DB
 var dbConfig config.Database
 var dbPath string
 
-func Init(conf config.Config) {
-	dbConfig = conf.Database
-	dbPath = fmt.Sprintf("%s:%s@(%s:%d)/%s?parseTime=true", dbConfig.Host, dbConfig.Password, dbConfig.Host, dbConfig.Port, dbConfig.Database)
-}
-
-func openDB() {
+func Init() {
 	var err error
-
-	if db != nil {
-		db.Close()
-		db = nil
-	}
+	dbConfig = config.GetConfig().Database
+	dbPath = fmt.Sprintf("%s:%s@(%s:%s)/%s?parseTime=true", dbConfig.User, dbConfig.Password, dbConfig.Host, dbConfig.Port, dbConfig.Database)
 
 	db, err = sql.Open("mysql", dbPath)
 	if err != nil {
+		log.Println("Cannot connect to database !")
+		log.Fatal(err)
+	}
 
+	err = db.Ping()
+	if err != nil {
+		log.Println("Cannot ping the database !")
+		log.Fatal(err)
+	}
+
+	var query string = `SHOW GRANTS;`
+	var rows *sql.Rows = executeQuery(query)
+	defer rows.Close()
+
+	for rows.Next() {
+		var res string
+		rows.Scan(&res)
+		fmt.Println(res)
 	}
 }
+
+func executeQuery(query string) *sql.Rows {
+	var err error
+	var rows *sql.Rows
+
+	rows, err = db.Query(query)
+	if err != nil {
+		log.Println("Error while query DB :")
+		log.Fatal(err)
+	}
+
+	return rows
+}