first commit

backend/app/database.py

@@ -0,0 +1,41 @@
+import sqlite3
+from pathlib import Path
+
+
+def init_db(db_path: Path) -> None:
+    db_path.parent.mkdir(parents=True, exist_ok=True)
+    conn = sqlite3.connect(db_path)
+    try:
+        conn.execute("PRAGMA journal_mode=WAL")
+        conn.execute("PRAGMA busy_timeout=5000")
+        conn.execute("""
+            CREATE TABLE IF NOT EXISTS site (
+                key   TEXT PRIMARY KEY,
+                value TEXT NOT NULL
+            )
+        """)
+        conn.execute("""
+            CREATE TABLE IF NOT EXISTS segments (
+                id         TEXT PRIMARY KEY,
+                type       TEXT NOT NULL,
+                sort_order INTEGER NOT NULL,
+                title      TEXT NOT NULL,
+                content    TEXT NOT NULL DEFAULT '',
+                metadata   TEXT NOT NULL DEFAULT '{}',
+                created_at TEXT NOT NULL,
+                updated_at TEXT NOT NULL
+            )
+        """)
+        conn.execute(
+            "CREATE INDEX IF NOT EXISTS idx_segments_order ON segments(sort_order)"
+        )
+        conn.commit()
+    finally:
+        conn.close()
+
+
+def get_connection(db_path: Path) -> sqlite3.Connection:
+    conn = sqlite3.connect(db_path)
+    conn.row_factory = sqlite3.Row
+    conn.execute("PRAGMA busy_timeout=5000")
+    return conn