feat: add modal component and styles, implement config API

- Created a new Modal component in Solid.js with backdrop handling.
- Added modal styles for backdrop, content, header, and body.
- Introduced editor styles for a rich text editor interface.
- Implemented a new config controller and service in Go to fetch configuration settings.
- Defined a ConfigResponse type for structured API responses.
- Set up routing for the config endpoint in the Go application.

7 files changed, 60 insertions, 7 deletions

diff --git a/shrine/controllers/config.go b/shrine/controllers/config.go
new file mode 100644
index 0000000..6a32f3d
--- /dev/null
+++ b/shrine/controllers/config.go
@@ -0,0 +1,12 @@
+package controllers
+
+import (
+	"shrine/services"
+	"shrine/utils/shortcuts"
+
+	"github.com/gofiber/fiber/v2"
+)
+
+func ConfigController(context *fiber.Ctx) error {
+	return shortcuts.Success(context, services.GetConfig())
+}
\ No newline at end of file
diff --git a/shrine/router/config.go b/shrine/router/config.go
new file mode 100644
index 0000000..72a3063
--- /dev/null
+++ b/shrine/router/config.go
@@ -0,0 +1,13 @@
+package router
+
+import (
+	"shrine/controllers"
+	"shrine/enums"
+	"shrine/utils/urls"
+)
+
+func init() {
+	urls.SetNamespace("config")
+
+	urls.Path(enums.GET, "/", controllers.ConfigController, "index")
+}
\ No newline at end of file
diff --git a/shrine/services/config.go b/shrine/services/config.go
new file mode 100644
index 0000000..6077d1e
--- /dev/null
+++ b/shrine/services/config.go
@@ -0,0 +1,13 @@
+package services
+
+import (
+	"shrine/config"
+	configTypes "shrine/types/config"
+)
+
+func GetConfig() configTypes.ConfigResponse {
+	return configTypes.ConfigResponse{
+		MaxFileSize:    config.Storage.MaxFileSize,
+		MaxAttachments: config.Storage.MaxAttachments,
+	}
+}
\ No newline at end of file
diff --git a/shrine/services/letter.go b/shrine/services/letter.go
index 66bf9b8..e9bd825 100644
--- a/shrine/services/letter.go
+++ b/shrine/services/letter.go
@@ -84,7 +84,7 @@ func CreateLetter(userID uint, request letter.CreateRequest) (*common.MessageRes
 	if len(recipientIDs) == 1 && request.Title == "" {
 		existing := repositories.FindExistingDM(userID, recipientIDs[0])
 		if existing != nil {
-			_, err := repositories.SendMessage(existing.ID, userID, sanitizedBody, nil)
+			_, err := repositories.SendMessage(existing.ID, userID, sanitizedBody, request.AttachmentRefs)
 			if err != nil {
 				return nil, fail(enums.Internal, messages.FailedSendMessage)
 			}
@@ -92,7 +92,7 @@ func CreateLetter(userID uint, request letter.CreateRequest) (*common.MessageRes
 		}
 	}
 
-	record, err := repositories.CreateLetter(userID, strings.TrimSpace(request.Title), recipientIDs, sanitizedBody, nil)
+	record, err := repositories.CreateLetter(userID, strings.TrimSpace(request.Title), recipientIDs, sanitizedBody, request.AttachmentRefs)
 	if err != nil {
 		return nil, fail(enums.Internal, messages.FailedCreateLetter)
 	}
@@ -115,7 +115,7 @@ func SendLetterMessage(ref string, userID uint, request letter.SendMessageReques
 		return nil, serviceErr
 	}
 
-	message, err := repositories.SendMessage(record.ID, userID, sanitizedBody, nil)
+	message, err := repositories.SendMessage(record.ID, userID, sanitizedBody, request.AttachmentRefs)
 	if err != nil {
 		return nil, fail(enums.Internal, messages.FailedSendMessage)
 	}
diff --git a/shrine/types/config/response.go b/shrine/types/config/response.go
new file mode 100644
index 0000000..9d37d5d
--- /dev/null
+++ b/shrine/types/config/response.go
@@ -0,0 +1,6 @@
+package config
+
+type ConfigResponse struct {
+	MaxFileSize    int64 `json:"max_file_size"`
+	MaxAttachments int   `json:"max_attachments"`
+}
\ No newline at end of file
diff --git a/shrine/types/letter/request.go b/shrine/types/letter/request.go
index 2687352..69236d4 100644
--- a/shrine/types/letter/request.go
+++ b/shrine/types/letter/request.go
@@ -1,13 +1,15 @@
 package letter
 
 type CreateRequest struct {
-	Recipients []string `json:"recipients"`
-	Title      string   `json:"title"`
-	Body       string   `json:"body"`
+	Recipients     []string `json:"recipients"`
+	Title          string   `json:"title"`
+	Body           string   `json:"body"`
+	AttachmentRefs []string `json:"attachment_refs"`
 }
 
 type SendMessageRequest struct {
-	Body string `json:"body"`
+	Body           string   `json:"body"`
+	AttachmentRefs []string `json:"attachment_refs"`
 }
 
 type EditMessageRequest struct {
diff --git a/shrine/utils/storage/storage.go b/shrine/utils/storage/storage.go
index 32b3db5..3dcaebe 100644
--- a/shrine/utils/storage/storage.go
+++ b/shrine/utils/storage/storage.go
@@ -2,6 +2,7 @@ package storage
 
 import (
 	"context"
+	"fmt"
 	"io"
 	"shrine/config"
 	"shrine/utils/logger"
@@ -32,6 +33,9 @@ func init() {
 }
 
 func Upload(path string, reader io.Reader, size int64, contentType string) error {
+	if Client == nil {
+		return fmt.Errorf("storage not configured")
+	}
 	_, err := Client.PutObject(context.Background(), config.Storage.Bucket, path, reader, size, minio.PutObjectOptions{
 		ContentType: contentType,
 	})
@@ -39,6 +43,9 @@ func Upload(path string, reader io.Reader, size int64, contentType string) error
 }
 
 func Delete(path string) error {
+	if Client == nil {
+		return fmt.Errorf("storage not configured")
+	}
 	return Client.RemoveObject(context.Background(), config.Storage.Bucket, path, minio.RemoveObjectOptions{})
 }