Initial move

backend/schema.sql

@@ -0,0 +1,31 @@
+CREATE TABLE IF NOT EXISTS channels (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  name TEXT NOT NULL,
+  createdAt DATETIME DEFAULT CURRENT_TIMESTAMP
+);
+CREATE TABLE IF NOT EXISTS files (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  channelId INTEGER,
+  filePath TEXT,
+  fileType TEXT,
+  fileSize INTEGER,
+  originalName TEXT,
+  createdAt DATETIME DEFAULT CURRENT_TIMESTAMP,
+  FOREIGN KEY (channelId) REFERENCES channels (id) ON DELETE CASCADE
+);
+CREATE TABLE IF NOT EXISTS messages (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  channelId INTEGER,
+  content TEXT,
+  fileId INTEGER NULL,
+  createdAt DATETIME DEFAULT CURRENT_TIMESTAMP,
+  FOREIGN KEY (channelId) REFERENCES channels (id) ON DELETE CASCADE,
+  FOREIGN KEY (fileId) REFERENCES files (id) ON DELETE
+  SET
+    NULL
+); 
+CREATE VIRTUAL TABLE IF NOT EXISTS messages_fts USING fts5(
+  content,
+  content = 'messages',
+  content_rowid = 'id'
+);