-- WmailHub D1 初始schema
-- Console 运行时也会在本地模式下自动执行等价初始化(幂等)

CREATE TABLE IF NOT EXISTS users (
  id TEXT PRIMARY KEY,
  username TEXT NOT NULL UNIQUE,
  password_hash TEXT NOT NULL,
  created_at TEXT NOT NULL
);

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

-- 节点(转发平面)
CREATE TABLE IF NOT EXISTS nodes (
  id TEXT PRIMARY KEY,
  name TEXT NOT NULL,
  cloudflare_account_id TEXT,
  credential_id TEXT,
  status TEXT NOT NULL DEFAULT 'pending_oauth', -- pending_oauth | provisioning | offline | online | revoked
  version TEXT,
  last_seen_at TEXT,
  ingress_url TEXT,
  ingress_secret_enc TEXT,
  enrollment_token TEXT,
  enrollment_expires_at TEXT,
  provision_steps TEXT, -- JSON: 各安装步骤状态
  created_at TEXT NOT NULL,
  updated_at TEXT NOT NULL
);

-- 节点凭据:secret_hash 为摘要,secret_enc 为 AES-GCM 密文(HMAC 验签需要原文,加密存储防拖库泄露)
CREATE TABLE IF NOT EXISTS node_credentials (
  id TEXT PRIMARY KEY,
  node_id TEXT NOT NULL,
  secret_hash TEXT NOT NULL,
  secret_enc TEXT NOT NULL,
  status TEXT NOT NULL DEFAULT 'active', -- active | revoked
  created_at TEXT NOT NULL,
  revoked_at TEXT
);
CREATE INDEX IF NOT EXISTS idx_node_credentials_node ON node_credentials(node_id);

CREATE TABLE IF NOT EXISTS domains (
  id TEXT PRIMARY KEY,
  cloudflare_account_id TEXT NOT NULL,
  node_id TEXT,
  name TEXT NOT NULL,
  status TEXT NOT NULL DEFAULT 'pending', -- pending | active | error
  worker_id TEXT,
  zone_id TEXT,
  created_at TEXT NOT NULL,
  updated_at TEXT NOT NULL,
  UNIQUE(cloudflare_account_id, name)
);

CREATE TABLE IF NOT EXISTS mailboxes (
  id TEXT PRIMARY KEY,
  domain_id TEXT NOT NULL,
  address TEXT NOT NULL UNIQUE,
  status TEXT NOT NULL DEFAULT 'active', -- active | disabled
  retention_seconds INTEGER, -- NULL = 使用全局默认 86400
  is_catch_all INTEGER NOT NULL DEFAULT 0,
  created_at TEXT NOT NULL,
  updated_at TEXT NOT NULL
);
CREATE INDEX IF NOT EXISTS idx_mailboxes_domain ON mailboxes(domain_id);

CREATE TABLE IF NOT EXISTS emails (
  id TEXT PRIMARY KEY,
  node_id TEXT,
  mailbox_id TEXT,
  message_id TEXT,
  from_address TEXT,
  to_addresses TEXT,   -- JSON array
  cc_addresses TEXT,   -- JSON array
  subject TEXT,
  text_body TEXT,
  html_body TEXT,
  raw_storage_key TEXT,
  size INTEGER NOT NULL DEFAULT 0,
  received_at TEXT NOT NULL,
  expires_at TEXT NOT NULL,
  created_at TEXT NOT NULL
);
CREATE INDEX IF NOT EXISTS idx_emails_expires ON emails(expires_at);
CREATE INDEX IF NOT EXISTS idx_emails_mailbox ON emails(mailbox_id);
CREATE INDEX IF NOT EXISTS idx_emails_received ON emails(received_at DESC);
CREATE INDEX IF NOT EXISTS idx_emails_message_id ON emails(message_id);

CREATE TABLE IF NOT EXISTS email_attachments (
  id TEXT PRIMARY KEY,
  email_id TEXT NOT NULL,
  filename TEXT,
  content_type TEXT,
  size INTEGER NOT NULL DEFAULT 0,
  storage_key TEXT,
  content_id TEXT
);
CREATE INDEX IF NOT EXISTS idx_attachments_email ON email_attachments(email_id);

CREATE TABLE IF NOT EXISTS webhooks (
  id TEXT PRIMARY KEY,
  name TEXT NOT NULL,
  endpoint TEXT NOT NULL,
  secret TEXT NOT NULL,
  enabled INTEGER NOT NULL DEFAULT 1,
  created_at TEXT NOT NULL,
  updated_at TEXT NOT NULL
);

CREATE TABLE IF NOT EXISTS webhook_deliveries (
  id TEXT PRIMARY KEY,
  webhook_id TEXT NOT NULL,
  email_id TEXT NOT NULL,
  status TEXT NOT NULL DEFAULT 'pending', -- pending | success | failed | exhausted
  attempt_count INTEGER NOT NULL DEFAULT 0,
  next_retry_at TEXT,
  last_error TEXT,
  delivered_at TEXT,
  created_at TEXT NOT NULL
);
CREATE INDEX IF NOT EXISTS idx_deliveries_retry ON webhook_deliveries(status, next_retry_at);
CREATE INDEX IF NOT EXISTS idx_deliveries_webhook ON webhook_deliveries(webhook_id);

CREATE TABLE IF NOT EXISTS oauth_connections (
  id TEXT PRIMARY KEY,
  provider TEXT NOT NULL,
  account_id TEXT,
  encrypted_access_token TEXT NOT NULL,
  refresh_token TEXT,
  expires_at TEXT,
  created_at TEXT NOT NULL,
  updated_at TEXT NOT NULL
);

-- OAuth CSRF state(node_id 记录本次授权为哪个节点安装)
CREATE TABLE IF NOT EXISTS oauth_states (
  state TEXT PRIMARY KEY,
  node_id TEXT,
  created_at TEXT NOT NULL,
  expires_at TEXT NOT NULL
);

-- Node 请求 nonce 防重放(唯一约束即拒绝重复)
CREATE TABLE IF NOT EXISTS nonces (
  nonce TEXT PRIMARY KEY,
  node_id TEXT NOT NULL,
  expires_at TEXT NOT NULL
);

-- Console API / MCP 凭据(wmh_ 开头,总长 32;库中只存 SHA-256)
CREATE TABLE IF NOT EXISTS api_credentials (
  id TEXT PRIMARY KEY,
  kind TEXT NOT NULL, -- api | mcp
  name TEXT,
  key_hash TEXT NOT NULL UNIQUE,
  key_last4 TEXT NOT NULL,
  created_at TEXT NOT NULL,
  revoked_at TEXT,
  last_used_at TEXT
);

-- 本地 sim 模式:模拟 Cloudflare API 已创建的资源,供 UI 展示安装结果
CREATE TABLE IF NOT EXISTS cf_sim_resources (
  id TEXT PRIMARY KEY,
  kind TEXT NOT NULL, -- email_worker | routing_rule | zone | account
  ref_id TEXT,
  payload TEXT,
  created_at TEXT NOT NULL
);