added adding and editing of availabilities

backend/pkg/db/availabilities/availabilities.go

@@ -1,59 +1,58 @@
 package availabilities
 
 import (
-	"fmt"
-	"time"
-
-	cache "github.com/jfarleyx/go-simple-cache"
 	"github.com/johannesbuehl/golunteer/backend/pkg/db"
 )
 
-type availabilitiesDB struct {
-	Id       int    `db:"id"`
-	Text     string `db:"text"`
-	Disabled bool   `db:"disabled"`
+type AvailabilityDB struct {
+	Id int `db:"id" json:"id" validate:"required"`
+	Availability
 }
 
 type Availability struct {
-	Text     string
-	Disabled bool
+	Text    string `db:"text" json:"text" validate:"required"`
+	Enabled bool   `db:"enabled" json:"enabled" validate:"required"`
+	Color   string `db:"color" json:"color" validate:"required"`
 }
 
-var c *cache.Cache
+func Add(a Availability) error {
+	_, err := db.DB.NamedExec("INSERT INTO AVAILABILITIES (text, color, enabled) VALUES (:text, :color, :enabled)", a)
 
-func Keys() (map[int]Availability, error) {
-	if availabilities, hit := c.Get("availabilities"); !hit {
-		refresh()
+	return err
+}
 
-		return nil, fmt.Errorf("availabilities not stored cached")
+func Update(a AvailabilityDB) error {
+	_, err := db.DB.NamedExec("UPDATE AVAILABILITIES SET text = :text, color = :color, enabled = :enabled WHERE id = :id", a)
+
+	return err
+}
+
+func Slice() ([]AvailabilityDB, error) {
+	// get the availabilitiesRaw from the database
+	var availabilitiesRaw []AvailabilityDB
+
+	if err := db.DB.Select(&availabilitiesRaw, "SELECT * FROM AVAILABILITIES"); err != nil {
+		return nil, err
 	} else {
-		return availabilities.(map[int]Availability), nil
+		return availabilitiesRaw, nil
 	}
 }
 
-func refresh() {
-	// get the availabilitiesRaw from the database
-	var availabilitiesRaw []availabilitiesDB
-
-	if err := db.DB.Select(&availabilitiesRaw, "SELECT * FROM AVAILABILITIES"); err == nil {
+func Keys() (map[int]Availability, error) {
+	if availabilitiesRaw, err := Slice(); err != nil {
+		return nil, err
+	} else {
 		// convert the result in a map
 		availabilities := map[int]Availability{}
 
 		for _, a := range availabilitiesRaw {
 			availabilities[a.Id] = Availability{
-				Text:     a.Text,
-				Disabled: a.Disabled,
+				Text:    a.Text,
+				Enabled: a.Enabled,
+				Color:   a.Color,
 			}
 		}
 
-		c.Set("availabilities", availabilities)
+		return availabilities, nil
 	}
 }
-
-func init() {
-	c = cache.New(24 * time.Hour)
-
-	c.OnExpired(refresh)
-
-	refresh()
-}

backend/pkg/db/db.go

@@ -1,11 +1,13 @@
 package db
 
 import (
-	"time"
+	"database/sql"
+	"fmt"
+	"os"
 
-	"github.com/go-sql-driver/mysql"
 	"github.com/jmoiron/sqlx"
 	_config "github.com/johannesbuehl/golunteer/backend/pkg/config"
+	_ "modernc.org/sqlite" // SQLite driver
 )
 
 var config = _config.Config
@@ -14,20 +16,31 @@ var config = _config.Config
 var DB *sqlx.DB
 
 func init() {
-	// setup the database-connection
-	sqlConfig := mysql.Config{
-		AllowNativePasswords: true,
-		Net:                  "tcp",
-		User:                 config.Database.User,
-		Passwd:               config.Database.Password,
-		Addr:                 config.Database.Host,
-		DBName:               config.Database.Database,
-	}
-
 	// connect to the database
-	DB = sqlx.MustOpen("mysql", sqlConfig.FormatDSN())
-	DB.SetMaxIdleConns(10)
-	DB.SetMaxIdleConns(100)
-	DB.SetConnMaxLifetime(time.Minute)
+	DB = sqlx.MustOpen("sqlite", config.Database)
 
+	// create the tables if they don't exist
+	if dbSetupInstructions, err := os.ReadFile("setup.sql"); err != nil {
+		panic("can't read database-setup")
+	} else {
+		DB.MustExec(string(dbSetupInstructions))
+
+		// take wether the admin-user is present as an indicator to a new instance
+		var admin struct {
+			Admin bool `db:"admin"`
+		}
+		if err := DB.QueryRowx("SELECT admin FROM USERS WHERE name = 'admin'").StructScan(&admin); err != nil {
+			// if the error isn't because there was no result, it's a real one
+			if err != sql.ErrNoRows {
+				panic(fmt.Errorf("can't query for the admin-user: %v", err))
+			} else {
+				// setup everything
+				setup()
+				fmt.Println("setup completed")
+
+				// reload the config
+				_config.LoadConfig()
+			}
+		}
+	}
 }

backend/pkg/db/setup.go

@@ -0,0 +1,80 @@
+package db
+
+import (
+	"bytes"
+	"fmt"
+	"math/rand/v2"
+	"os"
+
+	"github.com/google/uuid"
+	_config "github.com/johannesbuehl/golunteer/backend/pkg/config"
+	"golang.org/x/crypto/bcrypt"
+	"gopkg.in/yaml.v3"
+)
+
+func createPassword(l int) string {
+	passwordChars := [...]string{`A`, `B`, `C`, `D`, `E`, `F`, `G`, `H`, `I`, `J`, `K`, `L`, `M`, `N`, `O`, `P`, `Q`, `R`, `S`, `T`, `U`, `V`, `W`, `X`, `Y`, `Z`, `Ä`, `Ö`, `Ü`, `a`, `b`, `c`, `d`, `e`, `f`, `g`, `h`, `i`, `j`, `k`, `l`, `m`, `n`, `o`, `p`, `q`, `r`, `s`, `t`, `u`, `v`, `w`, `x`, `y`, `z`, `ä`, `ö`, `ü`, `ß`, `0`, `1`, `2`, `3`, `4`, `5`, `6`, `7`, `8`, `9`, `!`, `"`, `§`, `$`, `%`, `&`, `/`, `(`, `)`, `=`, `?`, `@`, `{`, `}`, `[`, `]`, `#`, `+`, `'`, `*`, `,`, `.`, `-`, `;`, `:`, `_`, `<`, `>`, `|`, `°`}
+	var password string
+
+	for ii := 0; ii < l; ii++ {
+		password += passwordChars[rand.IntN(len(passwordChars))]
+	}
+
+	return password
+}
+
+func setup() {
+	fmt.Println("Creating admin-password:")
+
+	// create an admin-password
+	const passwordLength = 20
+	password := createPassword(passwordLength)
+
+	// hash the admin-password
+	if passwordHash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost); err != nil {
+		panic(fmt.Errorf("can't generate password: %v", err))
+	} else {
+		fmt.Println("\thashed password")
+
+		// create an admin-user
+		user := struct {
+			Name     string `db:"name"`
+			Password []byte `db:"password"`
+			Admin    bool   `db:"admin"`
+			TokenID  string `db:"tokenID"`
+		}{
+			Name:     "admin",
+			Password: passwordHash,
+			Admin:    true,
+			TokenID:  uuid.NewString(),
+		}
+		if _, err := DB.NamedExec("INSERT INTO USERS (name, password, tokenID, admin) VALUES (:name, :password, :tokenID, :admin)", &user); err != nil {
+			panic(fmt.Errorf("can't insert admin-user into the database: %v", err))
+		}
+
+		fmt.Println("\twrote hashed password to database")
+	}
+
+	fmt.Printf("created user \"admin\" with password %s\n", password)
+
+	// create a jwt-signature
+	config.ClientSession.JwtSignature = createPassword(100)
+
+	// write the modified config-file
+	WriteConfig()
+
+}
+
+func WriteConfig() {
+	buf := bytes.Buffer{}
+	enc := yaml.NewEncoder(&buf)
+	enc.SetIndent(2)
+	// Can set default indent here on the encoder
+	if err := enc.Encode(&config.ConfigYaml); err != nil {
+		panic(err)
+	} else {
+		if err := os.WriteFile(_config.CONFIG_PATH, buf.Bytes(), 0644); err != nil {
+			panic(err)
+		}
+	}
+}

backend/pkg/db/tasks/tasks.go

@@ -9,14 +9,14 @@ import (
 )
 
 type tasksDB struct {
-	ID       int    `db:"id"`
-	Text     string `db:"text"`
-	Disabled bool   `db:"disabled"`
+	ID      int    `db:"id"`
+	Text    string `db:"text"`
+	Enabled bool   `db:"enabled"`
 }
 
 type Task struct {
-	Text     string `json:"text"`
-	Disabled bool   `json:"disabled"`
+	Text    string `json:"text"`
+	Enabled bool   `json:"enabled"`
 }
 
 var c *cache.Cache
@@ -41,8 +41,8 @@ func refresh() {
 
 		for _, a := range tasksRaw {
 			tasks[a.ID] = Task{
-				Text:     a.Text,
-				Disabled: a.Disabled,
+				Text:    a.Text,
+				Enabled: a.Enabled,
 			}
 		}