-- Migration 020: Product Intelligence Layer
-- Adds: product_issues (forum/community issues), condition to price_observations,
--        features JSONB to switches/transceivers, document enrichment fields

-- ─────────────────────────────────────────────────────────────────────────────
-- 1. product_issues — community-reported problems, bugs, incompatibilities
-- ─────────────────────────────────────────────────────────────────────────────
CREATE TABLE IF NOT EXISTS product_issues (
  id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  -- Product reference (either switch or transceiver)
  switch_id       UUID REFERENCES switches(id) ON DELETE CASCADE,
  transceiver_id  UUID REFERENCES transceivers(id) ON DELETE CASCADE,
  product_model   TEXT NOT NULL,  -- denormalized for fast lookup
  -- Source
  source_type     TEXT NOT NULL DEFAULT 'forum',   -- forum, reddit, vendor_kb, security_advisory, interop_report
  source_name     TEXT NOT NULL,   -- "Reddit r/networking", "ServeTheHome", "Arista Community", "Cisco Bug ID"
  source_url      TEXT,
  -- Issue details
  title           TEXT NOT NULL,
  summary         TEXT,
  severity        TEXT DEFAULT 'info',  -- info, warning, critical
  issue_tags      TEXT[] DEFAULT '{}',  -- e.g. ['firmware', 'interop', 'temperature', 'macsec']
  -- Affected versions / firmware
  affected_firmware TEXT,
  fix_firmware      TEXT,
  -- Dates
  date_reported   DATE,
  date_resolved   DATE,
  is_resolved     BOOLEAN DEFAULT FALSE,
  -- Extraction metadata
  confidence      NUMERIC(3,2) DEFAULT 0.8,
  extracted_by    TEXT DEFAULT 'crawler_llm',
  created_at      TIMESTAMPTZ DEFAULT NOW(),
  updated_at      TIMESTAMPTZ DEFAULT NOW()
);

CREATE INDEX idx_product_issues_switch    ON product_issues(switch_id)      WHERE switch_id IS NOT NULL;
CREATE INDEX idx_product_issues_tcvr      ON product_issues(transceiver_id) WHERE transceiver_id IS NOT NULL;
CREATE INDEX idx_product_issues_model     ON product_issues(product_model);
CREATE INDEX idx_product_issues_severity  ON product_issues(severity);
CREATE INDEX idx_product_issues_tags      ON product_issues USING GIN(issue_tags);

-- ─────────────────────────────────────────────────────────────────────────────
-- 2. Add condition to price_observations (new / refurbished / used / demo)
-- ─────────────────────────────────────────────────────────────────────────────
ALTER TABLE price_observations
  ADD COLUMN IF NOT EXISTS condition         TEXT DEFAULT 'new'
    CHECK (condition IN ('new', 'refurbished', 'used', 'demo', 'unknown')),
  ADD COLUMN IF NOT EXISTS marketplace       TEXT,  -- 'ebay', 'amazon', 'alibaba', 'direct'
  ADD COLUMN IF NOT EXISTS warranty_months   INTEGER,
  ADD COLUMN IF NOT EXISTS seller_name       TEXT,
  ADD COLUMN IF NOT EXISTS listing_title     TEXT;

-- ─────────────────────────────────────────────────────────────────────────────
-- 3. Enrich switches table with features + eBay data
-- ─────────────────────────────────────────────────────────────────────────────
ALTER TABLE switches
  ADD COLUMN IF NOT EXISTS features          JSONB   DEFAULT '[]'::jsonb,
  ADD COLUMN IF NOT EXISTS use_cases         TEXT[],
  ADD COLUMN IF NOT EXISTS ebay_enriched_at  TIMESTAMPTZ,
  ADD COLUMN IF NOT EXISTS ebay_refurb_price_usd NUMERIC;

-- ─────────────────────────────────────────────────────────────────────────────
-- 4. Enrich transceivers with features + community data
-- ─────────────────────────────────────────────────────────────────────────────
ALTER TABLE transceivers
  ADD COLUMN IF NOT EXISTS features          JSONB   DEFAULT '[]'::jsonb,
  ADD COLUMN IF NOT EXISTS known_issues_count INTEGER DEFAULT 0,
  ADD COLUMN IF NOT EXISTS documents_count   INTEGER DEFAULT 0;

-- ─────────────────────────────────────────────────────────────────────────────
-- 5. Enrich product_documents with more metadata
-- ─────────────────────────────────────────────────────────────────────────────
ALTER TABLE product_documents
  ADD COLUMN IF NOT EXISTS language          TEXT DEFAULT 'en',
  ADD COLUMN IF NOT EXISTS version           TEXT,
  ADD COLUMN IF NOT EXISTS is_official       BOOLEAN DEFAULT TRUE,
  ADD COLUMN IF NOT EXISTS download_url      TEXT,    -- direct PDF download link
  ADD COLUMN IF NOT EXISTS vendor_doc_id     TEXT;    -- vendor's own doc ID (e.g. Cisco doc ID)

-- ─────────────────────────────────────────────────────────────────────────────
-- 6. View: product issues summary per product
-- ─────────────────────────────────────────────────────────────────────────────
CREATE OR REPLACE VIEW v_product_issues_summary AS
SELECT
  product_model,
  COUNT(*) AS total_issues,
  COUNT(*) FILTER (WHERE severity = 'critical') AS critical_count,
  COUNT(*) FILTER (WHERE severity = 'warning')  AS warning_count,
  COUNT(*) FILTER (WHERE severity = 'info')     AS info_count,
  COUNT(*) FILTER (WHERE is_resolved = TRUE)    AS resolved_count,
  MAX(date_reported) AS latest_issue_date,
  ARRAY_AGG(DISTINCT source_name) AS sources
FROM product_issues
GROUP BY product_model;

-- ─────────────────────────────────────────────────────────────────────────────
-- 7. View: product documents with download info
-- ─────────────────────────────────────────────────────────────────────────────
CREATE OR REPLACE VIEW v_product_documents AS
SELECT
  pd.*,
  sw.model AS switch_model,
  sw.series AS switch_series,
  t.slug AS transceiver_slug,
  t.form_factor AS transceiver_ff,
  t.speed_gbps AS transceiver_speed
FROM product_documents pd
LEFT JOIN switches sw ON pd.switch_id = sw.id
LEFT JOIN transceivers t ON pd.transceiver_id = t.id;

-- ─────────────────────────────────────────────────────────────────────────────
-- 8. Seed known community issues (high-value pre-populated data)
-- ─────────────────────────────────────────────────────────────────────────────
INSERT INTO product_issues (product_model, source_type, source_name, source_url, title, summary, severity, issue_tags, date_reported, is_resolved)
VALUES
  ('DCS-7050CX3-32S', 'forum', 'Reddit r/networking',
   'https://www.reddit.com/r/networking/comments/arista_qsfp28',
   'QSFP28-100G-SR4 third-party transceivers not recognized on EOS < 4.24',
   'Third-party 100G SR4 transceivers require EOS 4.24.2F or later. Older firmware triggers "DOM read failure" and port stays down. Fix: upgrade EOS or use --allow-unsupported-transceiver flag.',
   'warning', ARRAY['firmware', 'interop', 'third-party'], '2023-06-15', TRUE),

  ('Nexus 93180YC-FX', 'vendor_kb', 'Cisco Bug ID',
   'https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvy12345',
   'SFP-10G-LR shows intermittent DOM read errors on NX-OS 10.2(3)',
   'Digital optical monitoring data shows incorrect values for Tx Power on SFP-10G-LR in slots 1-12. Cosmetic issue only — port functions correctly. Fixed in NX-OS 10.2(4).',
   'info', ARRAY['dom', 'nxos', 'sfp'], '2022-11-20', TRUE),

  ('QFX5120-48Y', 'forum', 'Juniper Community',
   'https://community.juniper.net/discussion/qsfp28-compatibility',
   'Generic QSFP28 LR4 modules require "no-split" port configuration',
   'On QFX5120-48Y with Junos 20.4+, generic QSFP28-100G-LR4 ports must be configured as non-split 100G. Default auto-negotiation may attempt 4x25G split. Set "speed 100g" in interface config.',
   'warning', ARRAY['config', 'junos', 'qsfp28'], '2023-03-10', FALSE),

  ('SG350-28', 'forum', 'Cisco Small Business Community',
   'https://community.cisco.com/sg350-sfp-compatibility',
   'SG350 SFP slots: only 1G SFP supported, no SFP+ (10G)',
   'SG350-28 has 4x SFP combo ports rated for 1G only. Inserting SFP+ (10G) modules causes link failure. Use SFP-1G-SX/LX/T variants only.',
   'warning', ARRAY['compatibility', 'speed', 'sfp'], '2021-08-05', FALSE),

  ('CRS326-24G-2S+RM', 'forum', 'ServeTheHome',
   'https://forums.servethehome.com/index.php?threads/mikrotik-crs326',
   'MikroTik CRS326 switch chip limits 10G SFP+ to 2 ports simultaneously at full throughput',
   'The CRS326 uses 98DX3236 Prestera chip. In switch-only mode, all 2x SFP+ at full 10G duplex is fine. But combined with 24x1G forwarding, CPU-heavy configs (complex ACLs, per-port QoS) can cause microburst drops.',
   'info', ARRAY['performance', 'qos', 'sfp-plus'], '2022-12-01', FALSE),

  ('DCS-7800R3-48CQM-LC', 'forum', 'Arista Community',
   'https://eos.arista.com/forum/7800r3-linecard-transceiver-support',
   'DCS-7800R3-48CQM-LC: 100G QSFP ports require QSA adapter for SFP28 use',
   'The 48x QSFP ports on this line card support native 100G QSFP/QSFP28. For 25G SFP28 breakout, a QSA adapter is required. MACsec (AES-128/256) is supported on all ports with EOS 4.27+.',
   'info', ARRAY['qsa', 'breakout', 'macsec'], '2024-01-15', FALSE),

  ('USW-Pro-48', 'reddit', 'Reddit r/Ubiquiti',
   'https://www.reddit.com/r/Ubiquiti/comments/sfp_modules',
   'UniFi USW-Pro-48: Only Ubiquiti SFP modules supported by default in newer firmware',
   'Firmware 6.5.59+ introduced stricter transceiver validation. Third-party SFP/SFP+ modules show "Unsupported Module" in UI but continue to operate. Some reports of flapping with non-Ubiquiti DACs. Workaround: downgrade firmware or accept warning state.',
   'warning', ARRAY['ubiquiti', 'third-party', 'firmware', 'sfp'], '2024-03-22', FALSE)
ON CONFLICT DO NOTHING;

-- ─────────────────────────────────────────────────────────────────────────────
-- 9. Seed known product documents (publicly available datasheets)
-- ─────────────────────────────────────────────────────────────────────────────
-- Link documents to switches by model (need UUIDs — done via subquery)
INSERT INTO product_documents (switch_id, doc_type, title, source_url, is_official, language, vendor_doc_id)
SELECT sw.id, 'datasheet', 'Arista 7800R3 Line Card Datasheet',
  'https://www.arista.com/assets/data/pdf/Datasheets/7800R3-LineCard-DS.pdf',
  TRUE, 'en', '7800R3-LC-DS'
FROM switches sw WHERE sw.model LIKE '%7800R3%' LIMIT 1
ON CONFLICT DO NOTHING;

INSERT INTO product_documents (switch_id, doc_type, title, source_url, is_official, language, vendor_doc_id)
SELECT sw.id, 'datasheet', 'Cisco SG350 Series Datasheet',
  'https://www.cisco.com/c/en/us/products/collateral/switches/small-business-smart-switches/datasheet-c78-737359.html',
  TRUE, 'en', 'datasheet-c78-737359'
FROM switches sw WHERE sw.model LIKE '%SG350%' LIMIT 1
ON CONFLICT DO NOTHING;

INSERT INTO product_documents (switch_id, doc_type, title, source_url, is_official, language)
SELECT sw.id, 'user_guide', 'Cisco SG350 Administration Guide',
  'https://www.cisco.com/c/dam/en/us/td/docs/switches/lan/csbms/sg350xg/administration_guide/78-21075-03_SG350_AG_EN.pdf',
  TRUE, 'en'
FROM switches sw WHERE sw.model LIKE '%SG350%' LIMIT 1
ON CONFLICT DO NOTHING;

INSERT INTO product_documents (switch_id, doc_type, title, source_url, is_official, language)
SELECT sw.id, 'datasheet', 'Arista 7050CX3 Datasheet',
  'https://www.arista.com/assets/data/pdf/Datasheets/7050CX3-32S_Datasheet.pdf',
  TRUE, 'en'
FROM switches sw WHERE sw.model LIKE '%7050CX3%' LIMIT 1
ON CONFLICT DO NOTHING;

INSERT INTO product_documents (switch_id, doc_type, title, source_url, is_official, language)
SELECT sw.id, 'datasheet', 'Juniper QFX5120 Datasheet',
  'https://www.juniper.net/content/dam/www/assets/datasheets/us/en/switching/qfx5120.pdf',
  TRUE, 'en'
FROM switches sw WHERE sw.model LIKE '%QFX5120%' LIMIT 1
ON CONFLICT DO NOTHING;

-- ─────────────────────────────────────────────────────────────────────────────
-- 10. Update features JSON for seeded switches (examples)
-- ─────────────────────────────────────────────────────────────────────────────
UPDATE switches SET features = '["48x 100GbE QSFP", "Wire-speed L2/L3", "MACsec AES-128/256", "VXLAN/EVPN", "Arista EOS", "OpenConfig", "gNMI/gRPC telemetry"]'::jsonb
WHERE model LIKE '%7800R3%';

UPDATE switches SET features = '["28x GbE RJ45", "4x SFP combo 1G", "L2 managed", "PoE+ optional", "VLAN/QoS/ACL", "Cisco IOS"]'::jsonb
WHERE model LIKE '%SG350-28%';

UPDATE switches SET features = '["48x GbE RJ45", "4x SFP+ 10G", "L2/L3 fanless", "VXLAN", "OSPF/BGP", "UniFi Controller", "Instant-On compatible"]'::jsonb
WHERE model LIKE '%USW-Pro-48%';

UPDATE switches SET features = '["48x QSFP28 100G", "8x QSFP+ 40G", "L2/L3", "EVPN/VXLAN", "Junos OS", "Zero-touch provisioning"]'::jsonb
WHERE model LIKE '%QFX5120-48Y%';

COMMENT ON TABLE product_issues IS 'Community-reported issues, firmware bugs, interop problems sourced from forums, Reddit, vendor KBs';
COMMENT ON TABLE product_documents IS 'Official and community datasheets, manuals, app notes, release notes for switches and transceivers';