// shared/lib/db/alert-schema.ts — 数据库表结构常量
// 供 monitor-ai 及未来其他项目引用

export const SERVICES_TABLE_SQL = `
CREATE TABLE IF NOT EXISTS services (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  name TEXT NOT NULL,
  category TEXT NOT NULL DEFAULT 'endpoint',
  alert_level TEXT NOT NULL DEFAULT 'warning',
  checks TEXT NOT NULL DEFAULT '[]',
  check_interval INTEGER DEFAULT 30,
  check_timeout INTEGER DEFAULT 10,
  enabled INTEGER DEFAULT 1,
  current_status TEXT DEFAULT 'unknown',
  status_since TEXT,
  display_order INTEGER DEFAULT 0,
  created_at TEXT DEFAULT (datetime('now', '+8 hours')),
  updated_at TEXT DEFAULT (datetime('now', '+8 hours'))
);
`

export const ALERT_CHANNELS_TABLE_SQL = `
CREATE TABLE IF NOT EXISTS alert_channels (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  name TEXT NOT NULL,
  channel_type TEXT DEFAULT 'wechat',
  webhook_url TEXT NOT NULL,
  enabled INTEGER DEFAULT 1,
  level_critical INTEGER DEFAULT 1,
  level_warning INTEGER DEFAULT 1,
  level_info INTEGER DEFAULT 0,
  quiet_enabled INTEGER DEFAULT 0,
  quiet_start TEXT DEFAULT '23:00',
  quiet_end TEXT DEFAULT '07:00',
  quiet_bypass_critical INTEGER DEFAULT 1,
  cooldown_minutes INTEGER DEFAULT 5,
  created_at TEXT DEFAULT (datetime('now', '+8 hours')),
  updated_at TEXT DEFAULT (datetime('now', '+8 hours'))
);
`

export const ALERT_SETTINGS_TABLE_SQL = `
CREATE TABLE IF NOT EXISTS alert_settings (
  key TEXT PRIMARY KEY,
  value TEXT NOT NULL,
  description TEXT,
  updated_at TEXT DEFAULT (datetime('now', '+8 hours'))
);
`

export const STATUS_HISTORY_TABLE_SQL = `
CREATE TABLE IF NOT EXISTS status_history (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  service_id INTEGER NOT NULL REFERENCES services(id),
  from_status TEXT NOT NULL,
  to_status TEXT NOT NULL,
  started_at TEXT NOT NULL,
  ended_at TEXT,
  duration_seconds INTEGER,
  error_message TEXT,
  failed_checks TEXT,
  truncated_by_restart INTEGER DEFAULT 0,
  created_at TEXT DEFAULT (datetime('now', '+8 hours'))
);

CREATE INDEX IF NOT EXISTS idx_status_history_service ON status_history(service_id, started_at);
CREATE INDEX IF NOT EXISTS idx_status_history_open ON status_history(ended_at) WHERE ended_at IS NULL;
`

export const ALERT_HISTORY_TABLE_SQL = `
CREATE TABLE IF NOT EXISTS alert_history (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  channel_id INTEGER REFERENCES alert_channels(id),
  service_id INTEGER REFERENCES services(id),
  status_event_id INTEGER REFERENCES status_history(id),
  alert_type TEXT NOT NULL DEFAULT 'alert',
  level TEXT NOT NULL,
  title TEXT NOT NULL,
  content TEXT NOT NULL,
  sent_at TEXT NOT NULL,
  success INTEGER DEFAULT 0,
  response_code INTEGER,
  response_body TEXT,
  created_at TEXT DEFAULT (datetime('now', '+8 hours'))
);

CREATE INDEX IF NOT EXISTS idx_alert_history_time ON alert_history(sent_at);
CREATE INDEX IF NOT EXISTS idx_alert_history_channel ON alert_history(channel_id, sent_at);
CREATE INDEX IF NOT EXISTS idx_alert_history_service ON alert_history(service_id, sent_at);
CREATE INDEX IF NOT EXISTS idx_alert_history_event ON alert_history(status_event_id);
`

export const ALL_TABLES_SQL = [
  SERVICES_TABLE_SQL,
  ALERT_CHANNELS_TABLE_SQL,
  ALERT_SETTINGS_TABLE_SQL,
  STATUS_HISTORY_TABLE_SQL,
  ALERT_HISTORY_TABLE_SQL,
].join('\n')