CREATE TABLE IF NOT EXISTS schema_migrations (
    version INTEGER PRIMARY KEY,
    applied_at TEXT NOT NULL DEFAULT (datetime('now'))
);

CREATE TABLE IF NOT EXISTS admins (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    username TEXT NOT NULL UNIQUE,
    password_hash TEXT NOT NULL,
    created_at TEXT NOT NULL DEFAULT (datetime('now'))
);

CREATE TABLE IF NOT EXISTS sessions (
    id TEXT PRIMARY KEY,
    admin_id INTEGER NOT NULL REFERENCES admins(id) ON DELETE CASCADE,
    expires_at TEXT NOT NULL,
    created_at TEXT NOT NULL DEFAULT (datetime('now'))
);

CREATE INDEX IF NOT EXISTS idx_sessions_expires_at ON sessions(expires_at);

CREATE TABLE IF NOT EXISTS proxy_rules (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    domain TEXT NOT NULL UNIQUE COLLATE NOCASE,
    upstream TEXT NOT NULL,
    https_enabled INTEGER NOT NULL DEFAULT 1 CHECK (https_enabled IN (0, 1)),
    http_redirect INTEGER NOT NULL DEFAULT 1 CHECK (http_redirect IN (0, 1)),
    enabled INTEGER NOT NULL DEFAULT 1 CHECK (enabled IN (0, 1)),
    created_at TEXT NOT NULL DEFAULT (datetime('now')),
    updated_at TEXT NOT NULL DEFAULT (datetime('now'))
);

CREATE TABLE IF NOT EXISTS settings (
    key TEXT PRIMARY KEY,
    value TEXT NOT NULL
);