CREATE TABLE IF NOT EXISTS contacts (
    id TEXT PRIMARY KEY,
    email TEXT NOT NULL,
    name TEXT NOT NULL DEFAULT '',
    company TEXT NOT NULL DEFAULT '',
    notes TEXT NOT NULL DEFAULT '',
    is_favorite INTEGER NOT NULL DEFAULT 0,
    last_contacted TEXT,
    contact_count INTEGER NOT NULL DEFAULT 0,
    source TEXT NOT NULL DEFAULT 'manual',
    created_at TEXT NOT NULL DEFAULT (datetime('now')),
    updated_at TEXT NOT NULL DEFAULT (datetime('now'))
);

CREATE UNIQUE INDEX IF NOT EXISTS idx_contacts_email ON contacts(email);
CREATE INDEX IF NOT EXISTS idx_contacts_name ON contacts(name);
CREATE INDEX IF NOT EXISTS idx_contacts_last_contacted ON contacts(last_contacted DESC);
CREATE INDEX IF NOT EXISTS idx_contacts_contact_count ON contacts(contact_count DESC);