支持多子账号订阅与独立节点过滤

scripts/migrate_subscription_accounts.sql

@@ -0,0 +1,38 @@
+BEGIN;
+
+CREATE TABLE IF NOT EXISTS subscription_account (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    name VARCHAR(100) NOT NULL UNIQUE,
+    upstream_key VARCHAR(255) NOT NULL UNIQUE,
+    filter_high_multiplier INTEGER NOT NULL DEFAULT 1,
+    enabled INTEGER NOT NULL DEFAULT 1,
+    last_success_at DATETIME,
+    last_error TEXT,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+INSERT INTO subscription_account (name, upstream_key, filter_high_multiplier, enabled)
+SELECT '旧共享订阅', :legacy_key, 1, 1
+WHERE NOT EXISTS (SELECT 1 FROM subscription_account WHERE name = '旧共享订阅')
+  AND NOT EXISTS (SELECT 1 FROM subscription_account WHERE upstream_key = :legacy_key);
+
+CREATE TABLE sub_bind_new (
+    key VARCHAR(255) NOT NULL PRIMARY KEY,
+    user VARCHAR(255) NOT NULL UNIQUE,
+    subscription_account_id INTEGER NOT NULL,
+    FOREIGN KEY (subscription_account_id) REFERENCES subscription_account(id)
+);
+
+INSERT INTO sub_bind_new (key, user, subscription_account_id)
+SELECT sb.key, sb.user, sa.id
+FROM sub_bind sb
+JOIN (SELECT id FROM subscription_account
+      WHERE name = '旧共享订阅' OR upstream_key = :legacy_key
+      ORDER BY id LIMIT 1) sa;
+
+DROP TABLE sub_bind;
+ALTER TABLE sub_bind_new RENAME TO sub_bind;
+CREATE INDEX idx_sub_bind_account ON sub_bind(subscription_account_id);
+
+COMMIT;