v3: follows, notifications, invite-only registration, unread markers

api/sql/schema.sql

@@ -21,7 +21,8 @@ CREATE TABLE users (
   password_hash TEXT NOT NULL,
   is_admin      INTEGER NOT NULL DEFAULT 0,
   created_at    TEXT NOT NULL,
-  avatar_mime   TEXT
+  avatar_mime   TEXT,
+  invited_by    TEXT REFERENCES users(id)
 );
 
 CREATE TABLE votes (
@@ -33,7 +34,6 @@ CREATE TABLE votes (
   FOREIGN KEY (user_id)  REFERENCES users(id) ON DELETE CASCADE
 );
 
--- v2: playlists
 CREATE TABLE playlists (
   id          TEXT    PRIMARY KEY,
   user_id     TEXT    NOT NULL,
@@ -55,7 +55,6 @@ CREATE TABLE playlist_dumps (
   FOREIGN KEY (dump_id)     REFERENCES dumps(id)     ON DELETE CASCADE
 );
 
--- v3: comments
 CREATE TABLE comments (
   id         TEXT    PRIMARY KEY,
   dump_id    TEXT    NOT NULL,
@@ -75,3 +74,52 @@ CREATE INDEX idx_playlists_user       ON playlists(user_id);
 CREATE INDEX idx_playlist_dumps_order ON playlist_dumps(playlist_id, position);
 CREATE INDEX idx_playlist_dumps_dump  ON playlist_dumps(dump_id);
 CREATE INDEX idx_comments_dump        ON comments(dump_id, created_at);
+
+CREATE TABLE follows (
+  id                   TEXT    PRIMARY KEY,
+  follower_id          TEXT    NOT NULL,
+  followed_user_id     TEXT,
+  followed_playlist_id TEXT,
+  created_at           TEXT    NOT NULL,
+  FOREIGN KEY (follower_id)           REFERENCES users(id)     ON DELETE CASCADE,
+  FOREIGN KEY (followed_user_id)      REFERENCES users(id)     ON DELETE CASCADE,
+  FOREIGN KEY (followed_playlist_id)  REFERENCES playlists(id) ON DELETE CASCADE,
+  CHECK (
+    (followed_user_id IS NOT NULL AND followed_playlist_id IS NULL)
+    OR
+    (followed_user_id IS NULL AND followed_playlist_id IS NOT NULL)
+  )
+);
+
+CREATE UNIQUE INDEX idx_follows_user
+  ON follows(follower_id, followed_user_id)
+  WHERE followed_user_id IS NOT NULL;
+
+CREATE UNIQUE INDEX idx_follows_playlist
+  ON follows(follower_id, followed_playlist_id)
+  WHERE followed_playlist_id IS NOT NULL;
+
+CREATE INDEX idx_follows_follower ON follows(follower_id);
+
+CREATE TABLE invites (
+  token       TEXT PRIMARY KEY,
+  inviter_id  TEXT NOT NULL,
+  used_at     TEXT,
+  created_at  TEXT NOT NULL,
+  FOREIGN KEY (inviter_id) REFERENCES users(id) ON DELETE CASCADE
+);
+
+CREATE TABLE notifications (
+  id         TEXT    PRIMARY KEY,
+  user_id    TEXT    NOT NULL,
+  type       TEXT    NOT NULL,
+  data       TEXT    NOT NULL,
+  read       INTEGER NOT NULL DEFAULT 0,
+  created_at TEXT    NOT NULL,
+  source_key TEXT,
+  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+);
+CREATE INDEX idx_notifications_user ON notifications(user_id, created_at);
+CREATE UNIQUE INDEX idx_notifications_dedup
+  ON notifications(user_id, source_key)
+  WHERE source_key IS NOT NULL;