-- Provisioning System Schema
-- Users, Payment Holds, Server Orders

-- 1. Users table with deposit balance
CREATE TABLE IF NOT EXISTS users (
  id TEXT PRIMARY KEY,                    -- UUID
  email TEXT NOT NULL UNIQUE,
  name TEXT NOT NULL,
  balance_usd REAL NOT NULL DEFAULT 0.0 CHECK(balance_usd >= 0),
  status TEXT NOT NULL DEFAULT 'active' CHECK(status IN ('active', 'suspended', 'deleted')),
  created_at TEXT NOT NULL DEFAULT (datetime('now')),
  updated_at TEXT NOT NULL DEFAULT (datetime('now'))
);

CREATE INDEX IF NOT EXISTS idx_users_email ON users(email);
CREATE INDEX IF NOT EXISTS idx_users_status ON users(status);

-- 2. Payment holds table (hold → capture/release)
CREATE TABLE IF NOT EXISTS payment_holds (
  id TEXT PRIMARY KEY,                    -- UUID
  user_id TEXT NOT NULL,
  order_id TEXT NOT NULL,                 -- References server_orders.id
  amount_usd REAL NOT NULL CHECK(amount_usd > 0),
  status TEXT NOT NULL DEFAULT 'active' CHECK(status IN ('active', 'captured', 'released')),
  reason TEXT NOT NULL,
  created_at TEXT NOT NULL DEFAULT (datetime('now')),
  resolved_at TEXT,                       -- When captured or released
  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
);

CREATE INDEX IF NOT EXISTS idx_payment_holds_user ON payment_holds(user_id);
CREATE INDEX IF NOT EXISTS idx_payment_holds_order ON payment_holds(order_id);
CREATE INDEX IF NOT EXISTS idx_payment_holds_status ON payment_holds(status);

-- 3. Server orders table
CREATE TABLE IF NOT EXISTS server_orders (
  id TEXT PRIMARY KEY,                    -- UUID
  user_id TEXT NOT NULL,
  pricing_id INTEGER NOT NULL,            -- References pricing.id (instance_type + region)
  provider_name TEXT NOT NULL,            -- linode, vultr, etc.
  status TEXT NOT NULL DEFAULT 'pending' CHECK(status IN (
    'pending',        -- Order created, hold placed
    'provisioning',   -- API call in progress
    'active',         -- Server running
    'failed',         -- Provisioning failed
    'deleted'         -- Server terminated
  )),
  -- Provider response data
  provider_instance_id TEXT,              -- Linode/Vultr instance ID
  server_ip TEXT,                         -- IPv4 address
  server_ipv6 TEXT,                       -- IPv6 address
  root_password TEXT,                     -- Encrypted/hashed
  -- Cost tracking
  monthly_cost_usd REAL NOT NULL,
  -- Metadata
  label TEXT,                             -- User-defined server label
  os_image TEXT NOT NULL DEFAULT 'ubuntu_22_04',
  error_message TEXT,
  -- Timestamps
  created_at TEXT NOT NULL DEFAULT (datetime('now')),
  provisioned_at TEXT,
  deleted_at TEXT,
  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
  FOREIGN KEY (pricing_id) REFERENCES pricing(id)
);

CREATE INDEX IF NOT EXISTS idx_server_orders_user ON server_orders(user_id);
CREATE INDEX IF NOT EXISTS idx_server_orders_status ON server_orders(status);
CREATE INDEX IF NOT EXISTS idx_server_orders_provider ON server_orders(provider_name, provider_instance_id);
CREATE INDEX IF NOT EXISTS idx_server_orders_created ON server_orders(created_at);