Instance settings updates (#59)

Allow admins to set instance settings through a PATCH to /api/v1/instance

Update templates to reflect some of the new fields

1 files changed, 48 insertions, 9 deletions

diff --git a/internal/util/validation.go b/internal/util/validation.go
index d392231bb..446f7a70e 100644
--- a/internal/util/validation.go
+++ b/internal/util/validation.go
@@ -27,6 +27,17 @@ import (
 	"golang.org/x/text/language"
 )
 
+const (
+	maximumPasswordLength         = 64
+	minimumPasswordEntropy        = 60 // dictates password strength. See https://github.com/wagslane/go-password-validator
+	minimumReasonLength           = 40
+	maximumReasonLength           = 500
+	maximumSiteTitleLength        = 40
+	maximumShortDescriptionLength = 500
+	maximumDescriptionLength      = 5000
+	maximumSiteTermsLength        = 5000
+)
+
 // ValidateNewPassword returns an error if the given password is not sufficiently strong, or nil if it's ok.
 func ValidateNewPassword(password string) error {
 	if password == "" {
@@ -47,12 +58,8 @@ func ValidateUsername(username string) error {
 		return errors.New("no username provided")
 	}
 
-	if len(username) > maximumUsernameLength {
-		return fmt.Errorf("username should be no more than %d chars but '%s' was %d", maximumUsernameLength, username, len(username))
-	}
-
 	if !usernameValidationRegex.MatchString(username) {
-		return fmt.Errorf("given username %s was invalid: must contain only lowercase letters, numbers, and underscores", username)
+		return fmt.Errorf("given username %s was invalid: must contain only lowercase letters, numbers, and underscores, max %d characters", username, maximumUsernameLength)
 	}
 
 	return nil
@@ -65,10 +72,6 @@ func ValidateEmail(email string) error {
 		return errors.New("no email provided")
 	}
 
-	if len(email) > maximumEmailLength {
-		return fmt.Errorf("email address should be no more than %d chars but '%s' was %d", maximumEmailLength, email, len(email))
-	}
-
 	_, err := mail.ParseAddress(email)
 	return err
 }
@@ -132,3 +135,39 @@ func ValidateEmojiShortcode(shortcode string) error {
 	}
 	return nil
 }
+
+// ValidateSiteTitle ensures that the given site title is within spec.
+func ValidateSiteTitle(siteTitle string) error {
+	if len(siteTitle) > maximumSiteTitleLength {
+		return fmt.Errorf("site title should be no more than %d chars but given title was %d", maximumSiteTitleLength, len(siteTitle))
+	}
+
+	return nil
+}
+
+// ValidateSiteShortDescription ensures that the given site short description is within spec.
+func ValidateSiteShortDescription(d string) error {
+	if len(d) > maximumShortDescriptionLength {
+		return fmt.Errorf("short description should be no more than %d chars but given description was %d", maximumShortDescriptionLength, len(d))
+	}
+
+	return nil
+}
+
+// ValidateSiteDescription ensures that the given site description is within spec.
+func ValidateSiteDescription(d string) error {
+	if len(d) > maximumDescriptionLength {
+		return fmt.Errorf("description should be no more than %d chars but given description was %d", maximumDescriptionLength, len(d))
+	}
+
+	return nil
+}
+
+// ValidateSiteTerms ensures that the given site terms string is within spec.
+func ValidateSiteTerms(t string) error {
+	if len(t) > maximumSiteTermsLength {
+		return fmt.Errorf("terms should be no more than %d chars but given terms was %d", maximumSiteTermsLength, len(t))
+	}
+
+	return nil
+}