feat: implement resolvers for email template

server/resolvers/update_email_template.go

@@ -1 +1,63 @@
 package resolvers
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/authorizerdev/authorizer/server/db"
+	"github.com/authorizerdev/authorizer/server/db/models"
+	"github.com/authorizerdev/authorizer/server/graph/model"
+	"github.com/authorizerdev/authorizer/server/refs"
+	"github.com/authorizerdev/authorizer/server/token"
+	"github.com/authorizerdev/authorizer/server/utils"
+	"github.com/authorizerdev/authorizer/server/validators"
+	log "github.com/sirupsen/logrus"
+)
+
+// UpdateEmailTemplateResolver resolver for update email template mutation
+func UpdateEmailTemplateResolver(ctx context.Context, params model.UpdateEmailTemplateRequest) (*model.Response, error) {
+	gc, err := utils.GinContextFromContext(ctx)
+	if err != nil {
+		log.Debug("Failed to get GinContext: ", err)
+		return nil, err
+	}
+
+	if !token.IsSuperAdmin(gc) {
+		log.Debug("Not logged in as super admin")
+		return nil, fmt.Errorf("unauthorized")
+	}
+
+	emailTemplate, err := db.Provider.GetEmailTemplateByID(ctx, params.ID)
+	if err != nil {
+		log.Debug("failed to get email template: ", err)
+		return nil, err
+	}
+
+	emailTemplateDetails := models.EmailTemplate{
+		ID:        emailTemplate.ID,
+		Key:       emailTemplate.ID,
+		EventName: emailTemplate.EventName,
+		CreatedAt: refs.Int64Value(emailTemplate.CreatedAt),
+	}
+
+	if params.EventName != nil && emailTemplateDetails.EventName != refs.StringValue(params.EventName) {
+		if isValid := validators.IsValidEmailTemplateEventName(refs.StringValue(params.EventName)); !isValid {
+			log.Debug("invalid event name: ", refs.StringValue(params.EventName))
+			return nil, fmt.Errorf("invalid event name %s", refs.StringValue(params.EventName))
+		}
+		emailTemplateDetails.EventName = refs.StringValue(params.EventName)
+	}
+
+	if params.Template != nil && emailTemplateDetails.Template != refs.StringValue(params.Template) {
+		emailTemplateDetails.Template = refs.StringValue(params.Template)
+	}
+
+	_, err = db.Provider.UpdateEmailTemplate(ctx, emailTemplateDetails)
+	if err != nil {
+		return nil, err
+	}
+
+	return &model.Response{
+		Message: `Email template updated successfully.`,
+	}, nil
+}