added adding and editing of availabilities

2025-01-18 13:25:12 +00:00
parent e37310b774
commit e17c9db90c
24 changed files with 737 additions and 163 deletions
--- a/backend/.gitignore
+++ b/backend/.gitignore
@@ -1,3 +1,4 @@
 config.yaml
 logs
-__debug_bin*
+__debug_bin*
+database.db
--- a/backend/go.mod
+++ b/backend/go.mod
@@ -6,6 +6,7 @@ require github.com/go-sql-driver/mysql v1.8.1

 require (
 	github.com/andybalholm/brotli v1.1.0 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
@@ -17,6 +18,8 @@ require (
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mattn/go-runewidth v0.0.16 // indirect
+	github.com/ncruces/go-strftime v0.1.9 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	github.com/rivo/uniseg v0.2.0 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasthttp v1.51.0 // indirect
@@ -24,6 +27,9 @@ require (
 	golang.org/x/net v0.21.0 // indirect
 	golang.org/x/sys v0.29.0 // indirect
 	golang.org/x/text v0.21.0 // indirect
+	modernc.org/libc v1.55.3 // indirect
+	modernc.org/mathutil v1.6.0 // indirect
+	modernc.org/memory v1.8.0 // indirect
 )

 require (
@@ -35,4 +41,5 @@ require (
 	golang.org/x/crypto v0.32.0
 	gopkg.in/natefinch/lumberjack.v2 v2.2.1
 	gopkg.in/yaml.v3 v3.0.1
+	modernc.org/sqlite v1.34.5
 )
--- a/backend/go.sum
+++ b/backend/go.sum
@@ -3,6 +3,8 @@ filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4
 github.com/andybalholm/brotli v1.1.0 h1:eLKJA0d02Lf0mVpIDgYnqXcUn0GqVmEFny3VuID1U3M=
 github.com/andybalholm/brotli v1.1.0/go.mod h1:sms7XGricyQI9K10gOSf56VKKWS4oLer58Q+mhRPtnY=
 github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
+github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
+github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
 github.com/gabriel-vasile/mimetype v1.4.3 h1:in2uUcidCuFcDKtdcBxlR0rJ1+fsokWf+uqxgUFjbI0=
 github.com/gabriel-vasile/mimetype v1.4.3/go.mod h1:d8uq/6HKRL6CGdk+aubisF/M5GcPfT7nKyLpA0lbSSk=
 github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA=
@@ -38,7 +40,11 @@ github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D
 github.com/mattn/go-runewidth v0.0.16 h1:E5ScNMtiwvlvB5paMFdw9p4kSQzbXFikJ5SQO6TULQc=
 github.com/mattn/go-runewidth v0.0.16/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 github.com/mattn/go-sqlite3 v1.14.22/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
+github.com/ncruces/go-strftime v0.1.9 h1:bY0MQC28UADQmHmaF5dgpLmImcShSi2kHU9XLdhx/f4=
+github.com/ncruces/go-strftime v0.1.9/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
 github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
 github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
 github.com/rs/xid v1.5.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
@@ -66,3 +72,11 @@ gopkg.in/natefinch/lumberjack.v2 v2.2.1 h1:bBRl1b0OH9s/DuPhuXpNl+VtCaJXFZ5/uEFST
 gopkg.in/natefinch/lumberjack.v2 v2.2.1/go.mod h1:YD8tP3GAjkrDg1eZH7EGmyESg/lsYskCTPBJVb9jqSc=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+modernc.org/libc v1.55.3 h1:AzcW1mhlPNrRtjS5sS+eW2ISCgSOLLNyFzRh/V3Qj/U=
+modernc.org/libc v1.55.3/go.mod h1:qFXepLhz+JjFThQ4kzwzOjA/y/artDeg+pcYnY+Q83w=
+modernc.org/mathutil v1.6.0 h1:fRe9+AmYlaej+64JsEEhoWuAYBkOtQiMEU7n/XgfYi4=
+modernc.org/mathutil v1.6.0/go.mod h1:Ui5Q9q1TR2gFm0AQRqQUaBWFLAhQpCwNcuhBOSedWPo=
+modernc.org/memory v1.8.0 h1:IqGTL6eFMaDZZhEWwcREgeMXYwmW83LYW8cROZYkg+E=
+modernc.org/memory v1.8.0/go.mod h1:XPZ936zp5OMKGWPqbD3JShgd/ZoQ7899TUuQqxY+peU=
+modernc.org/sqlite v1.34.5 h1:Bb6SR13/fjp15jt70CL4f18JIN7p7dnMExd+UFnF15g=
+modernc.org/sqlite v1.34.5/go.mod h1:YLuNmX9NKs8wRNK2ko1LW1NGYcc9FkBO69JOt1AR9JE=
--- a/backend/pkg/config/config.go
+++ b/backend/pkg/config/config.go
@@ -50,10 +50,10 @@ func (config ConfigStruct) SignJWT(val any) (string, error) {
 	return t.SignedString([]byte(config.ClientSession.JwtSignature))
 }

-func loadConfig() ConfigStruct {
+func LoadConfig() ConfigStruct {
 	Config := ConfigYaml{}

-	yamlFile, err := os.ReadFile("config.yaml")
+	yamlFile, err := os.ReadFile(CONFIG_PATH)
 	if err != nil {
 		panic(fmt.Sprintf("Error opening config-file: %q", err))
 	}
@@ -91,5 +91,5 @@ func loadConfig() ConfigStruct {
 }

 func init() {
-	Config = loadConfig()
+	Config = LoadConfig()
 }
--- a/backend/pkg/config/configYAML.go
+++ b/backend/pkg/config/configYAML.go
@@ -13,13 +13,8 @@ var CONFIG_PATH = "config.yaml"

 type ConfigYaml struct {
 	LogLevel string `yaml:"log_level"`
-	Database struct {
-		Host     string `yaml:"host"`
-		User     string `yaml:"user"`
-		Password string `yaml:"password"`
-		Database string `yaml:"database"`
-	} `yaml:"database"`
-	Server struct {
+	Database string `yaml:"database"`
+	Server   struct {
 		Port int `yaml:"port"`
 	} `yaml:"server"`
 	ClientSession struct {
--- a/backend/pkg/db/availabilities/availabilities.go
+++ b/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()
-}
--- a/backend/pkg/db/db.go
+++ b/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()
+			}
+		}
+	}
 }
--- a/backend/pkg/db/setup.go
+++ b/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)
+		}
+	}
+}
--- a/backend/pkg/db/tasks/tasks.go
+++ b/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,
 			}
 		}

--- a/backend/pkg/logger/logger.go
+++ b/backend/pkg/logger/logger.go
@@ -37,7 +37,11 @@ func init() {
 		Out:        os.Stdout,
 		TimeFormat: time.DateTime,
 		FormatLevel: func(i interface{}) string {
-			return strings.ToUpper(fmt.Sprintf("| %-6s|", i))
+			if i == nil {
+				return "| LOG   |"
+			} else {
+				return strings.ToUpper(fmt.Sprintf("| %-6s|", i))
+			}
 		},
 		FormatFieldName: func(i interface{}) string {
 			return fmt.Sprintf("%s", i)
--- a/backend/pkg/router/availabilities.go
+++ b/backend/pkg/router/availabilities.go
@@ -0,0 +1,107 @@
+package router
+
+import (
+	"github.com/gofiber/fiber/v2"
+	"github.com/johannesbuehl/golunteer/backend/pkg/db/availabilities"
+)
+
+func getAvailabilities(args HandlerArgs) responseMessage {
+	response := responseMessage{}
+
+	// get all the availabilites from the database
+	if avails, err := availabilities.Slice(); err != nil {
+		response.Status = fiber.StatusInternalServerError
+
+		logger.Error().Msgf("can't get availabilites: %v", err)
+
+		return response
+	} else {
+		response.Data = struct {
+			Availabilities []availabilities.AvailabilityDB `json:"availabilities"`
+		}{Availabilities: avails}
+
+		return response
+	}
+}
+
+func postAvailabilitie(args HandlerArgs) responseMessage {
+	response := responseMessage{}
+
+	// check admin
+	if !args.User.Admin {
+		response.Status = fiber.StatusUnauthorized
+
+		logger.Warn().Msg("user is no admin")
+
+		return response
+
+		// parse the body
+	} else {
+		var body availabilities.Availability
+
+		if err := args.C.BodyParser(&body); err != nil {
+			response.Status = fiber.StatusBadRequest
+
+			logger.Log().Msgf("can't parse body: %v", err)
+
+			return response
+
+			// validate the body
+		} else if err := validate.Struct(&response); err != nil {
+			response.Status = fiber.StatusBadRequest
+
+			logger.Log().Msgf("invalid body: %v", err)
+
+			return response
+		} else if err := availabilities.Add(body); err != nil {
+			response.Status = fiber.StatusInternalServerError
+
+			logger.Error().Msgf("can't add availability: %v", err)
+
+			return response
+		} else {
+			return response
+		}
+	}
+}
+
+func patchAvailabilities(args HandlerArgs) responseMessage {
+	response := responseMessage{}
+
+	// check admin
+	if !args.User.Admin {
+		response.Status = fiber.StatusUnauthorized
+
+		logger.Warn().Msg("user is no admin")
+
+		return response
+
+		// parse the body
+	} else {
+		var body availabilities.AvailabilityDB
+
+		if err := args.C.BodyParser(&body); err != nil {
+			response.Status = fiber.StatusBadRequest
+
+			logger.Log().Msgf("can't parse body: %v", err)
+
+			return response
+
+			// validate the body
+		} else if err := validate.Struct(&response); err != nil {
+			response.Status = fiber.StatusBadRequest
+
+			logger.Log().Msgf("invalid body: %v", err)
+
+			return response
+		} else if err := availabilities.Update(body); err != nil {
+			response.Status = fiber.StatusInternalServerError
+
+			logger.Error().Msgf("can't update availability: %v", err)
+
+			return response
+		} else {
+			return response
+		}
+	}
+}
--- a/backend/pkg/router/router.go
+++ b/backend/pkg/router/router.go
@@ -81,14 +81,17 @@ func init() {
 			"events/user/pending":   getEventsUserPending,
 			"tasks":                 getTasks,
 			"users":                 getUsers,
+			"availabilities":        getAvailabilities,
 		},
 		"POST": {
-			"events": postEvent,
-			"users":  postUser,
+			"events":         postEvent,
+			"users":          postUser,
+			"availabilities": postAvailabilitie,
 		},
 		"PATCH": {
-			"users":  patchUser,
-			"events": patchEvent,
+			"users":          patchUser,
+			"events":         patchEvent,
+			"availabilities": patchAvailabilities,
 		},
 		"PUT": {
 			"users/password": putPassword,
--- a/backend/setup.sql
+++ b/backend/setup.sql
@@ -0,0 +1,47 @@
+CREATE TABLE IF NOT EXISTS TASKS (
+	id INTEGER PRIMARY KEY,
+	text varchar(64) NOT NULL,
+	enabled BOOL DEFAULT(true)
+);
+
+CREATE TABLE IF NOT EXISTS AVAILABILITIES (
+	id INTEGER PRIMARY KEY,
+	text varchar(32) NOT NULL,
+	color varchar(7) NOT NULL,
+	enabled BOOL DEFAULT(true)
+);
+
+CREATE TABLE IF NOT EXISTS USERS (
+	name varchar(64) PRIMARY KEY,
+	password binary(60) NOT NULL,
+	admin BOOL NOT NULL DEFAULT(false),
+	tokenID varchar(64) NOT NULL,
+	CHECK (length(password) = 60),
+	CHECK (length(tokenID) = 36)
+);
+
+CREATE TABLE IF NOT EXISTS EVENTS (
+	id INTEGER PRIMARY KEY,
+	date DATETIME NOT NULL,
+	description TEXT DEFAULT "" 
+);
+
+CREATE TABLE IF NOT EXISTS USER_AVAILABILITIES (
+	userName varchar(64) NOT NULL,
+	eventID INTEGER NOT NULL,
+	availabilityID INTEGER NOT NULL,
+	PRIMARY KEY (userName, eventID),
+	FOREIGN KEY (userName) REFERENCES USERS(name) ON DELETE CASCADE ON UPDATE CASCADE,
+	FOREIGN KEY (eventID) REFERENCES EVENTS(id) ON DELETE CASCADE ON UPDATE CASCADE,
+	FOREIGN KEY (availabilityID) REFERENCES AVAILABILITIES(id) ON UPDATE CASCADE
+);
+
+CREATE TABLE IF NOT EXISTS USER_ASSIGNMENTS (
+	eventID INTEGER NOT NULL,
+	taskID INTEGER NOT NULL,
+	userName varchar(64),
+	PRIMARY KEY (eventID, taskID),
+	FOREIGN KEY (eventID) REFERENCES EVENTS(id) ON DELETE CASCADE,
+	FOREIGN KEY (userName) REFERENCES USERS(name) ON DELETE CASCADE ON UPDATE CASCADE,
+	FOREIGN KEY (taskID) REFERENCES TASKS(id) ON UPDATE CASCADE
+);