-- Migration: Add Google Calendar Integration
-- Date: 2026-02-09

-- Create google_calendar_tokens table
CREATE TABLE IF NOT EXISTS google_calendar_tokens (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    user_id INTEGER NOT NULL UNIQUE,
    access_token TEXT NOT NULL,
    refresh_token TEXT NOT NULL,
    token_expiry DATETIME,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES users (id) ON DELETE CASCADE
);

-- Add google_calendar_event_id column to bookings table
ALTER TABLE bookings ADD COLUMN google_calendar_event_id VARCHAR(255);

-- Create index for faster lookups
CREATE INDEX IF NOT EXISTS idx_google_calendar_tokens_user_id ON google_calendar_tokens(user_id);
CREATE INDEX IF NOT EXISTS idx_bookings_google_calendar_event_id ON bookings(google_calendar_event_id);