update

src/db/migrations.sql

@@ -1,15 +1,18 @@
 PRAGMA foreign_keys = ON;
 
+-- ─── core tables ───────────────────────────────────────────────────────
 CREATE TABLE IF NOT EXISTS files (
-    id     INTEGER PRIMARY KEY,
-    path   TEXT NOT NULL UNIQUE,
-    size   INTEGER,
-    mtime  INTEGER
+    id    INTEGER PRIMARY KEY,
+    path  TEXT NOT NULL UNIQUE,
+    size  INTEGER,
+    mtime INTEGER
 );
 
 CREATE TABLE IF NOT EXISTS tags (
-    id   INTEGER PRIMARY KEY,
-    name TEXT NOT NULL UNIQUE
+    id            INTEGER PRIMARY KEY,
+    name          TEXT NOT NULL UNIQUE,
+    parent_id     INTEGER REFERENCES tags(id),
+    canonical_id  INTEGER REFERENCES tags(id)
 );
 
 CREATE TABLE IF NOT EXISTS file_tags (
@@ -18,5 +21,41 @@ CREATE TABLE IF NOT EXISTS file_tags (
     PRIMARY KEY (file_id, tag_id)
 );
 
-CREATE INDEX IF NOT EXISTS idx_files_path       ON files(path);
-CREATE INDEX IF NOT EXISTS idx_file_tags_tag_id ON file_tags(tag_id);
+CREATE TABLE IF NOT EXISTS attributes (
+    id      INTEGER PRIMARY KEY,
+    file_id INTEGER NOT NULL REFERENCES files(id) ON DELETE CASCADE,
+    key     TEXT NOT NULL,
+    value   TEXT
+);
+
+-- optional free-form JSON metadata
+CREATE TABLE IF NOT EXISTS json_meta (
+    file_id INTEGER PRIMARY KEY REFERENCES files(id) ON DELETE CASCADE,
+    data    TEXT                -- arbitrary JSON blob
+);
+
+-- ─── full-text search ──────────────────────────────────────────────────
+CREATE VIRTUAL TABLE IF NOT EXISTS files_fts
+USING fts5(
+    path,
+    content='files', content_rowid='id',
+    prefix='2 3 4 5 6 7 8 9 10'
+);
+
+CREATE TRIGGER IF NOT EXISTS files_ai AFTER INSERT ON files BEGIN
+  INSERT INTO files_fts(rowid, path) VALUES (new.id, new.path);
+END;
+CREATE TRIGGER IF NOT EXISTS files_au AFTER UPDATE ON files BEGIN
+  UPDATE files_fts SET path = new.path WHERE rowid = new.id;
+END;
+CREATE TRIGGER IF NOT EXISTS files_ad AFTER DELETE ON files BEGIN
+  DELETE FROM files_fts WHERE rowid = old.id;
+END;
+
+-- ─── version table for incremental migrations ─────────────────────────
+CREATE TABLE IF NOT EXISTS schema_version (version INTEGER PRIMARY KEY);
+
+-- ─── useful indexes ────────────────────────────────────────────────────
+CREATE INDEX IF NOT EXISTS idx_files_path        ON files(path);
+CREATE INDEX IF NOT EXISTS idx_file_tags_tag_id  ON file_tags(tag_id);
+CREATE INDEX IF NOT EXISTS idx_attr_file_key     ON attributes(file_id, key);