feat: manage files via manifestattachment with auth and cascade trigger, format API.md method signatures

src/schema.js

@@ -765,6 +765,52 @@ BEGIN
 END
 `;
 
+export const INIT_FILE = `
+IF NOT EXISTS (SELECT * FROM sys.tables WHERE name = 'file')
+BEGIN
+    CREATE TABLE [file] (
+        id INT IDENTITY(1,1) PRIMARY KEY,
+        mimetype NVARCHAR(255) NOT NULL,
+        name NVARCHAR(255) NOT NULL,
+        content VARBINARY(MAX) NOT NULL
+    );
+END
+`;
+
+export const INIT_MANIFESTATTACHMENT = `
+IF NOT EXISTS (SELECT * FROM sys.tables WHERE name = 'manifestattachment')
+BEGIN
+    CREATE TABLE manifestattachment (
+        id INT IDENTITY(1,1) PRIMARY KEY,
+        manifest_id INT NOT NULL,
+        file_id INT NOT NULL,
+        CONSTRAINT FK_manifestattachment_manifest FOREIGN KEY (manifest_id) REFERENCES manifest(id) ON DELETE CASCADE,
+        CONSTRAINT FK_manifestattachment_file FOREIGN KEY (file_id) REFERENCES [file](id) ON DELETE CASCADE
+    );
+END
+`;
+
+export const INIT_MANIFESTATTACHMENT_TRIGGER = `
+IF OBJECT_ID(N'dbo.TR_manifestattachment_delete_file', N'TR') IS NOT NULL
+    DROP TRIGGER dbo.TR_manifestattachment_delete_file;
+
+EXEC('
+CREATE TRIGGER dbo.TR_manifestattachment_delete_file
+ON manifestattachment
+AFTER DELETE
+AS
+BEGIN
+    SET NOCOUNT ON;
+    DELETE f
+    FROM [file] f
+    INNER JOIN deleted d ON f.id = d.file_id
+    WHERE NOT EXISTS (
+        SELECT 1 FROM manifestattachment ma WHERE ma.file_id = f.id
+    );
+END
+');
+`;
+
 /** DDL scripts in dependency order for schema init. */
 export const SCHEMA_SCRIPTS = [
     INIT_META,
@@ -810,4 +856,8 @@ export const SCHEMA_SCRIPTS = [
     INIT_COMPANYSETTING,
     INIT_POSTERMINAL,
     INIT_POSTERMINALCATEGORY,
+    INIT_FILE,
+    INIT_MANIFESTATTACHMENT,
+    INIT_MANIFESTATTACHMENT_TRIGGER,
 ];
+