Move accountant into world

pkg/accounts/accounts.go

@@ -0,0 +1,28 @@
+package accounts
+
+// Accountant decribes something that stores accounts and account values
+type Accountant interface {
+	// RegisterAccount will register a new account and return it's info
+	RegisterAccount(name string) (acc Account, err error)
+
+	// AssignData stores a custom account key value pair
+	AssignData(account string, key string, value string) error
+
+	// GetValue returns custom account data for a specific key
+	GetValue(account string, key string) (string, error)
+
+	// VerifySecret will verify whether the account secret matches with the
+	VerifySecret(account string, secret string) (bool, error)
+
+	// GetSecret gets the secret associated with an account
+	GetSecret(account string) (string, error)
+}
+
+// Account represents a registered user
+type Account struct {
+	// Name simply describes the account and must be unique
+	Name string
+
+	// Data represents internal account data
+	Data map[string]string
+}

pkg/accounts/accounts_test.go

@@ -0,0 +1,63 @@
+package accounts
+
+import (
+	"testing"
+
+	"github.com/google/uuid"
+)
+
+func TestNewAccountant(t *testing.T) {
+	// Very basic verify here for now
+	accountant := NewSimpleAccountant()
+	if accountant == nil {
+		t.Error("Failed to create accountant")
+	}
+}
+
+func TestAccountant_RegisterAccount(t *testing.T) {
+
+	accountant := NewSimpleAccountant()
+
+	// Start by making two accounts
+
+	namea := uuid.New().String()
+	acca, err := accountant.RegisterAccount(namea)
+	if err != nil {
+		t.Error(err)
+	} else if acca.Name != namea {
+		t.Errorf("Missmatched account name after register, expected: %s, actual: %s", namea, acca.Name)
+	}
+
+	nameb := uuid.New().String()
+	accb, err := accountant.RegisterAccount(nameb)
+	if err != nil {
+		t.Error(err)
+	} else if accb.Name != nameb {
+		t.Errorf("Missmatched account name after register, expected: %s, actual: %s", nameb, acca.Name)
+	}
+
+	// Verify another request gets rejected
+	_, err = accountant.RegisterAccount(namea)
+	if err == nil {
+		t.Error("Duplicate account name did not produce error")
+	}
+}
+
+func TestAccountant_AssignGetData(t *testing.T) {
+	accountant := NewSimpleAccountant()
+
+	name := uuid.New().String()
+	a, err := accountant.RegisterAccount(name)
+	if err != nil {
+		t.Error(err)
+	}
+
+	err = accountant.AssignData(a.Name, "key", "value")
+	if err != nil {
+		t.Error("Failed to set data for created account")
+	} else if id, err := accountant.GetValue(a.Name, "key"); err != nil {
+		t.Error("Failed to get data for account")
+	} else if id != "value" {
+		t.Error("Fetched data is incorrect for account")
+	}
+}

pkg/accounts/simpleAccountant.go

@@ -0,0 +1,90 @@
+package accounts
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+)
+
+// SimpleAccountant manages a set of accounts
+type SimpleAccountant struct {
+	Accounts map[string]Account
+}
+
+// NewSimpleAccountant creates a new accountant
+func NewSimpleAccountant() Accountant {
+	return &SimpleAccountant{
+		Accounts: make(map[string]Account),
+	}
+}
+
+// RegisterAccount adds an account to the set of internal accounts
+func (a *SimpleAccountant) RegisterAccount(name string) (acc Account, err error) {
+
+	// Set up the account info
+	acc.Name = name
+	acc.Data = make(map[string]string)
+
+	// Verify this acount isn't already registered
+	for _, a := range a.Accounts {
+		if a.Name == acc.Name {
+			return Account{}, fmt.Errorf("account name already registered: %s", a.Name)
+		}
+	}
+
+	// Set the creation time
+	acc.Data["created"] = time.Now().String()
+
+	// Create a secret
+	acc.Data["secret"] = uuid.New().String()
+
+	// Simply add the account to the map
+	a.Accounts[acc.Name] = acc
+
+	return
+}
+
+// VerifySecret verifies if an account secret is correct
+func (a *SimpleAccountant) VerifySecret(account string, secret string) (bool, error) {
+	// Find the account matching the ID
+	if this, ok := a.Accounts[account]; ok {
+		return this.Data["secret"] == secret, nil
+	}
+
+	return false, fmt.Errorf("no account found for id: %s", account)
+}
+
+// GetSecret gets the internal secret
+func (a *SimpleAccountant) GetSecret(account string) (string, error) {
+	// Find the account matching the ID
+	if this, ok := a.Accounts[account]; ok {
+		return this.Data["secret"], nil
+	}
+
+	return "", fmt.Errorf("no account found for id: %s", account)
+}
+
+// AssignData assigns data to an account
+func (a *SimpleAccountant) AssignData(account string, key string, value string) error {
+
+	// Find the account matching the ID
+	if this, ok := a.Accounts[account]; ok {
+		this.Data[key] = value
+		a.Accounts[account] = this
+	} else {
+		return fmt.Errorf("no account found for id: %s", account)
+	}
+
+	return nil
+}
+
+// GetValue gets the rover rover for the account
+func (a *SimpleAccountant) GetValue(account string, key string) (string, error) {
+	// Find the account matching the ID
+	this, ok := a.Accounts[account]
+	if !ok {
+		return "", fmt.Errorf("no account found for id: %s", account)
+	}
+	return this.Data[key], nil
+}