-- TIP: Transceiver Intelligence Platform
-- Migration 008: Product Assets (Images, Datasheets, Manuals)
--
-- Adds columns for product images, datasheet PDFs, and manual/guide links
-- to both switches and transceivers tables.

-- ═══════════════════════════════════════════════════════
-- SWITCHES: Product assets
-- ═══════════════════════════════════════════════════════
ALTER TABLE switches ADD COLUMN IF NOT EXISTS image_url TEXT;
ALTER TABLE switches ADD COLUMN IF NOT EXISTS image_local_path TEXT;
ALTER TABLE switches ADD COLUMN IF NOT EXISTS datasheet_url TEXT;
ALTER TABLE switches ADD COLUMN IF NOT EXISTS datasheet_local_path TEXT;
ALTER TABLE switches ADD COLUMN IF NOT EXISTS manual_urls JSONB DEFAULT '[]'::jsonb;
ALTER TABLE switches ADD COLUMN IF NOT EXISTS quick_start_url TEXT;
ALTER TABLE switches ADD COLUMN IF NOT EXISTS cli_reference_url TEXT;
ALTER TABLE switches ADD COLUMN IF NOT EXISTS release_notes_url TEXT;
ALTER TABLE switches ADD COLUMN IF NOT EXISTS product_page_url TEXT;
ALTER TABLE switches ADD COLUMN IF NOT EXISTS eol_url TEXT;
ALTER TABLE switches ADD COLUMN IF NOT EXISTS assets_scraped_at TIMESTAMPTZ;

-- ═══════════════════════════════════════════════════════
-- TRANSCEIVERS: Product assets
-- ═══════════════════════════════════════════════════════
ALTER TABLE transceivers ADD COLUMN IF NOT EXISTS image_url TEXT;
ALTER TABLE transceivers ADD COLUMN IF NOT EXISTS image_local_path TEXT;
ALTER TABLE transceivers ADD COLUMN IF NOT EXISTS datasheet_url TEXT;
ALTER TABLE transceivers ADD COLUMN IF NOT EXISTS datasheet_local_path TEXT;
ALTER TABLE transceivers ADD COLUMN IF NOT EXISTS manual_urls JSONB DEFAULT '[]'::jsonb;
ALTER TABLE transceivers ADD COLUMN IF NOT EXISTS product_page_url TEXT;
ALTER TABLE transceivers ADD COLUMN IF NOT EXISTS assets_scraped_at TIMESTAMPTZ;

-- ═══════════════════════════════════════════════════════
-- VENDORS: Documentation portal URLs
-- ═══════════════════════════════════════════════════════
ALTER TABLE vendors ADD COLUMN IF NOT EXISTS docs_portal_url TEXT;
ALTER TABLE vendors ADD COLUMN IF NOT EXISTS datasheet_library_url TEXT;
ALTER TABLE vendors ADD COLUMN IF NOT EXISTS image_cdn_base TEXT;
ALTER TABLE vendors ADD COLUMN IF NOT EXISTS support_portal_url TEXT;

-- ═══════════════════════════════════════════════════════
-- DOCUMENTS table for downloaded PDFs (datasheets, manuals)
-- ═══════════════════════════════════════════════════════
CREATE TABLE IF NOT EXISTS product_documents (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  switch_id UUID REFERENCES switches(id) ON DELETE CASCADE,
  transceiver_id UUID REFERENCES transceivers(id) ON DELETE CASCADE,
  vendor_id UUID REFERENCES vendors(id) ON DELETE SET NULL,
  doc_type TEXT NOT NULL CHECK (doc_type IN ('datasheet', 'manual', 'quick_start', 'cli_reference', 'release_notes', 'installation_guide', 'compatibility_matrix', 'eol_notice')),
  title TEXT NOT NULL,
  source_url TEXT NOT NULL,
  local_path TEXT,
  r2_key TEXT,
  file_size_bytes BIGINT,
  content_hash TEXT,
  page_count INTEGER,
  language TEXT DEFAULT 'en',
  extracted_text TEXT,
  indexed_at TIMESTAMPTZ,
  downloaded_at TIMESTAMPTZ DEFAULT NOW(),
  created_at TIMESTAMPTZ DEFAULT NOW(),
  CONSTRAINT chk_doc_ref CHECK (switch_id IS NOT NULL OR transceiver_id IS NOT NULL)
);

CREATE INDEX IF NOT EXISTS idx_product_docs_switch ON product_documents(switch_id) WHERE switch_id IS NOT NULL;
CREATE INDEX IF NOT EXISTS idx_product_docs_transceiver ON product_documents(transceiver_id) WHERE transceiver_id IS NOT NULL;
CREATE INDEX IF NOT EXISTS idx_product_docs_type ON product_documents(doc_type);
CREATE INDEX IF NOT EXISTS idx_product_docs_vendor ON product_documents(vendor_id);
CREATE INDEX IF NOT EXISTS idx_product_docs_hash ON product_documents(content_hash);