-- Foodlinkk 2nd brain: emails, agenda, LLM memory

CREATE TABLE IF NOT EXISTS emails (
    id SERIAL PRIMARY KEY,
    message_id TEXT UNIQUE NOT NULL,
    thread_id TEXT,
    client_id INT REFERENCES clients(id) ON DELETE SET NULL,
    deal_id INT REFERENCES deals(id) ON DELETE SET NULL,
    direction VARCHAR(8) NOT NULL CHECK (direction IN ('in', 'out')),
    from_addr TEXT,
    to_addrs TEXT[] DEFAULT '{}',
    cc_addrs TEXT[] DEFAULT '{}',
    subject TEXT,
    body_text TEXT,
    body_html TEXT,
    received_at TIMESTAMPTZ,
    sent_at TIMESTAMPTZ,
    is_read BOOLEAN DEFAULT FALSE,
    labels TEXT[] DEFAULT '{}',
    raw_headers JSONB DEFAULT '{}',
    created_at TIMESTAMPTZ DEFAULT NOW()
);
CREATE INDEX IF NOT EXISTS idx_emails_received ON emails(received_at DESC);
CREATE INDEX IF NOT EXISTS idx_emails_client ON emails(client_id);
CREATE INDEX IF NOT EXISTS idx_emails_from ON emails(from_addr);

CREATE TABLE IF NOT EXISTS calendar_events (
    id SERIAL PRIMARY KEY,
    title TEXT NOT NULL,
    description TEXT,
    starts_at TIMESTAMPTZ NOT NULL,
    ends_at TIMESTAMPTZ,
    client_id INT REFERENCES clients(id) ON DELETE SET NULL,
    deal_id INT REFERENCES deals(id) ON DELETE SET NULL,
    location TEXT,
    source VARCHAR(32) DEFAULT 'manual',
    external_id TEXT,
    all_day BOOLEAN DEFAULT FALSE,
    created_at TIMESTAMPTZ DEFAULT NOW(),
    updated_at TIMESTAMPTZ DEFAULT NOW()
);
CREATE INDEX IF NOT EXISTS idx_calendar_starts ON calendar_events(starts_at);

CREATE TABLE IF NOT EXISTS llm_memory (
    id SERIAL PRIMARY KEY,
    category VARCHAR(64) NOT NULL DEFAULT 'fact',
    subject TEXT,
    content TEXT NOT NULL,
    client_id INT REFERENCES clients(id) ON DELETE SET NULL,
    deal_id INT REFERENCES deals(id) ON DELETE SET NULL,
    source VARCHAR(64) DEFAULT 'herman',
    metadata JSONB DEFAULT '{}',
    created_at TIMESTAMPTZ DEFAULT NOW(),
    updated_at TIMESTAMPTZ DEFAULT NOW()
);
CREATE INDEX IF NOT EXISTS idx_llm_memory_category ON llm_memory(category);
CREATE INDEX IF NOT EXISTS idx_llm_memory_updated ON llm_memory(updated_at DESC);

-- Seed: deal deadlines als agenda-items (zichtbaar in ochtendbericht)
INSERT INTO calendar_events (title, starts_at, ends_at, deal_id, source, description)
SELECT
    'Deadline: ' || d.title,
    d.deadline::timestamptz,
    d.deadline::timestamptz + INTERVAL '1 hour',
    d.id,
    'deal_deadline',
    COALESCE(d.next_action, '')
FROM deals d
WHERE d.deadline IS NOT NULL
  AND d.stage NOT IN ('won', 'lost')
  AND NOT EXISTS (
    SELECT 1 FROM calendar_events ce
    WHERE ce.deal_id = d.id AND ce.source = 'deal_deadline'
  );