feat: publish standalone worker

Separate worker packaging and service lifecycle from the control plane.

app/models/concerns/has_token.go

@@ -0,0 +1,41 @@
+// Package concerns provides functionality.
+package concerns
+
+import (
+	"bytes"
+	"crypto/rand"
+	"encoding/base64"
+)
+
+// HasToken provides functionality.
+type HasToken struct {
+	Token string `json:"-" gorm:"unique_index"`
+}
+
+// SetToken provides functionality.
+func (m *HasToken) SetToken() {
+	tk := RandomToken(32)
+	m.Token = base64.RawURLEncoding.EncodeToString(tk)
+	if m.Token == "" {
+		panic("RandomToken failed: token not set")
+	}
+	if len(m.Token) < 32 {
+		panic("RandomToken failed: token too short")
+	}
+}
+
+// RandomToken provides functionality.
+func RandomToken(tokenLen int) []byte {
+	b := make([]byte, tokenLen)
+	n, err := rand.Read(b)
+	if err != nil {
+		panic(err)
+	}
+	if n != tokenLen {
+		panic("RandomToken failed: bad len")
+	}
+	if bytes.Equal(b, make([]byte, tokenLen)) {
+		panic("RandomToken failed: generated empty token")
+	}
+	return b
+}

app/models/concerns/model.go

@@ -0,0 +1,14 @@
+// Source: https://gorm.io/gorm/blob/master/model.go
+// Use 64 bit keys
+
+package concerns
+
+// Model base model definition, including fields `ID`, `CreatedAt`, `UpdatedAt`, `DeletedAt`, which could be embedded in your models
+//    type User struct {
+//      gorm.Model
+//    }
+
+// Model provides functionality.
+type Model struct {
+	ID int64 `gorm:"primarykey" json:"id"`
+}

app/models/concerns/renderable.go

@@ -0,0 +1,7 @@
+package concerns
+
+// Renderable provides functionality.
+type Renderable struct {
+	Raw      string
+	Rendered string
+}

app/models/concerns/soft_delete.go

@@ -0,0 +1,12 @@
+package concerns
+
+import (
+	"time"
+)
+
+// SoftDelete provides functionality.
+type SoftDelete struct {
+	DeletedAt *time.Time `gorm:"index" json:"-"`
+	DeleterID *int64     `gorm:"type:bigint REFERENCES users(id)" json:"-"`
+	// Deleter   *User      `json:"-"`
+}

app/models/concerns/timestamped.go

@@ -0,0 +1,11 @@
+package concerns
+
+import (
+	"time"
+)
+
+// Timestamped provides functionality.
+type Timestamped struct {
+	CreatedAt time.Time `json:"created_at"`
+	UpdatedAt time.Time `json:"updated_at"`
+}