/**
 * Migration 032 — Switches column additions + verification fix + demo data flag
 *
 * Adds:
 * - switches: description, features, use_cases, system_type, is_linecard,
 *             chassis_model, slot_type, flexbox_compat_mode, flexbox_notes
 * - procurement tables: is_demo_data flag for DEMO DATA badge
 * - Fix compute_transceiver_verification: 'unknown' confidence with populated
 *   core fields counts as details_verified (scraper seeded data is valid)
 */

-- ============================================================
-- 1. Add missing columns to switches table
-- ============================================================
ALTER TABLE switches
  ADD COLUMN IF NOT EXISTS description          text,
  ADD COLUMN IF NOT EXISTS features             jsonb    DEFAULT '[]'::jsonb,
  ADD COLUMN IF NOT EXISTS use_cases            text[]   DEFAULT '{}'::text[],
  ADD COLUMN IF NOT EXISTS system_type          text     DEFAULT 'fixed',
  ADD COLUMN IF NOT EXISTS is_linecard          boolean  DEFAULT false,
  ADD COLUMN IF NOT EXISTS chassis_model        text,
  ADD COLUMN IF NOT EXISTS slot_type            text,
  ADD COLUMN IF NOT EXISTS flexbox_compat_mode  text,
  ADD COLUMN IF NOT EXISTS flexbox_notes        text;

-- Check constraint for system_type
DO $$
BEGIN
  IF NOT EXISTS (
    SELECT 1 FROM pg_constraint WHERE conname = 'switches_system_type_check'
  ) THEN
    ALTER TABLE switches ADD CONSTRAINT switches_system_type_check
      CHECK (system_type IN ('fixed', 'modular', 'stackable'));
  END IF;
END $$;

-- Index for linecard lookups
CREATE INDEX IF NOT EXISTS idx_switches_is_linecard ON switches (is_linecard) WHERE is_linecard = true;
CREATE INDEX IF NOT EXISTS idx_switches_chassis_model ON switches (chassis_model) WHERE chassis_model IS NOT NULL;

-- ============================================================
-- 2. Add is_demo_data flag to procurement tables
-- ============================================================
ALTER TABLE reorder_signals
  ADD COLUMN IF NOT EXISTS is_demo_data boolean DEFAULT false;

ALTER TABLE abc_classification
  ADD COLUMN IF NOT EXISTS is_demo_data boolean DEFAULT false;

ALTER TABLE stock_snapshots
  ADD COLUMN IF NOT EXISTS is_demo_data boolean DEFAULT false;

ALTER TABLE market_intelligence
  ADD COLUMN IF NOT EXISTS is_demo_data boolean DEFAULT false;

-- Mark existing demo data (seeded from migration 021)
-- These were seeded as static demo rows - mark them so frontend can badge them
UPDATE reorder_signals SET is_demo_data = true
WHERE source IS NULL OR source IN ('demo', 'seed', 'synthetic');

UPDATE abc_classification SET is_demo_data = true
WHERE classification_source IS NULL OR classification_source IN ('demo', 'seed', 'synthetic');

-- Market intelligence seeded rows (OFC 2026, AWS capex, etc. from migration 019)
UPDATE market_intelligence SET is_demo_data = true
WHERE source IN ('manual', 'seed', 'OFC 2026', 'demo')
   OR (source IS NULL AND created_at < '2026-04-09'::date);

-- ============================================================
-- 3. Fix details_verified: accept 'unknown' confidence when
--    core fields (form_factor, speed_gbps, reach_label, part_number)
--    are all populated — seed data from npm package is valid
-- ============================================================
CREATE OR REPLACE FUNCTION compute_transceiver_verification()
RETURNS void AS $$
DECLARE
  v_rec RECORD;
  v_price_row RECORD;
  v_price_eur NUMERIC;
  v_price_usd NUMERIC;
  v_price_verified BOOLEAN;
  v_image_verified BOOLEAN;
  v_details_verified BOOLEAN;
BEGIN
  FOR v_rec IN SELECT id FROM transceivers LOOP
    -- Price: any real price observation in last 60 days
    SELECT price, currency, time INTO v_price_row
    FROM price_observations
    WHERE transceiver_id = v_rec.id
      AND price > 0
      AND time > NOW() - INTERVAL '60 days'
    ORDER BY price DESC, time DESC
    LIMIT 1;

    v_price_verified := v_price_row IS NOT NULL;

    IF v_price_verified THEN
      CASE v_price_row.currency
        WHEN 'EUR' THEN
          v_price_eur := v_price_row.price;
          v_price_usd := NULL;
        WHEN 'USD' THEN
          v_price_usd := v_price_row.price;
          v_price_eur := NULL;
        WHEN 'GBP' THEN
          v_price_eur := v_price_row.price * 1.17;
          v_price_usd := NULL;
        ELSE
          v_price_eur := NULL;
          v_price_usd := NULL;
      END CASE;
    ELSE
      v_price_eur := NULL;
      v_price_usd := NULL;
    END IF;

    -- Image: has any image URL
    v_image_verified := EXISTS (
      SELECT 1 FROM transceivers
      WHERE id = v_rec.id
        AND image_url IS NOT NULL
        AND image_url != ''
    );

    -- Details verified:
    --   EITHER confidence is 'good' (scraped/verified/official) AND has connector or wavelength
    --   OR all core fields (form_factor, speed_gbps, reach_label, part_number) are populated
    --      (seed data from npm package counts — 'unknown' confidence with full spec = valid details)
    v_details_verified := EXISTS (
      SELECT 1 FROM transceivers t2
      WHERE t2.id = v_rec.id
        AND t2.data_confidence NOT IN ('garbage', '')
        AND t2.data_confidence IS NOT NULL
        AND (
          -- Scraped / official data with technical details
          (
            t2.data_confidence NOT IN ('unknown')
            AND (t2.connector IS NOT NULL OR t2.wavelengths IS NOT NULL OR t2.fiber_type IS NOT NULL)
          )
          OR
          -- Seed data with all core spec fields populated
          (
            t2.form_factor IS NOT NULL
            AND t2.speed_gbps IS NOT NULL
            AND t2.reach_label IS NOT NULL
            AND t2.part_number IS NOT NULL
            AND t2.fiber_type IS NOT NULL
          )
        )
    );

    UPDATE transceivers SET
      price_verified     = v_price_verified,
      price_verified_eur = v_price_eur,
      street_price_usd   = v_price_usd,
      image_verified     = v_image_verified,
      details_verified   = v_details_verified,
      fully_verified     = v_price_verified AND v_image_verified AND v_details_verified,
      updated_at         = NOW()
    WHERE id = v_rec.id;
  END LOOP;
END;
$$ LANGUAGE plpgsql;

-- Run verification refresh
SELECT compute_transceiver_verification();

-- ============================================================
-- 4. Report
-- ============================================================
SELECT
  COUNT(*) AS total,
  SUM(CASE WHEN price_verified THEN 1 ELSE 0 END) AS price_verified,
  SUM(CASE WHEN image_verified THEN 1 ELSE 0 END) AS image_verified,
  SUM(CASE WHEN details_verified THEN 1 ELSE 0 END) AS details_verified,
  SUM(CASE WHEN fully_verified THEN 1 ELSE 0 END) AS fully_verified,
  ROUND(100.0 * SUM(CASE WHEN details_verified THEN 1 ELSE 0 END) / COUNT(*), 1) AS details_pct,
  ROUND(100.0 * SUM(CASE WHEN fully_verified THEN 1 ELSE 0 END) / COUNT(*), 1) AS fully_pct
FROM transceivers;