-- Export Desk — Cloudflare D1 schema
-- Apply with Wrangler migrations (see database/migrations/0001_init.sql).
-- The Worker also enforces integrity; do not trust the model to write these tables directly.

CREATE TABLE IF NOT EXISTS searches (
  id TEXT PRIMARY KEY,
  created_at TEXT NOT NULL,
  agent TEXT NOT NULL CHECK (agent IN ('buyer_finder', 'market_analyzer')),
  product TEXT NOT NULL,
  hs_code TEXT,
  target_country TEXT NOT NULL,
  notes TEXT NOT NULL,
  consent INTEGER NOT NULL CHECK (consent IN (0, 1)),
  status TEXT NOT NULL CHECK (status IN ('proposed', 'needs_review', 'stopped', 'failed')),
  model TEXT,
  cache_key TEXT,
  error TEXT,
  result_json TEXT
);

CREATE TABLE IF NOT EXISTS leads (
  id TEXT PRIMARY KEY,
  search_id TEXT NOT NULL,
  party_name TEXT,
  country TEXT,
  website TEXT,
  contact_email TEXT,
  evidence_quote TEXT NOT NULL,
  fit_note TEXT,
  status TEXT NOT NULL CHECK (status IN ('proposed', 'approved', 'rejected', 'stopped')),
  created_at TEXT NOT NULL,
  FOREIGN KEY (search_id) REFERENCES searches(id)
);

CREATE TABLE IF NOT EXISTS reviews (
  id TEXT PRIMARY KEY,
  search_id TEXT NOT NULL,
  lead_id TEXT,
  kind TEXT NOT NULL CHECK (kind IN (
    'sanctions_or_payment_path',
    'customs',
    'contract',
    'international_payment',
    'official_document'
  )),
  hard_block INTEGER NOT NULL CHECK (hard_block IN (0, 1)),
  status TEXT NOT NULL CHECK (status IN ('open', 'referred', 'info', 'closed')),
  evidence_quote TEXT NOT NULL,
  assignee_role TEXT NOT NULL,
  created_at TEXT NOT NULL,
  FOREIGN KEY (search_id) REFERENCES searches(id),
  FOREIGN KEY (lead_id) REFERENCES leads(id)
);

CREATE TABLE IF NOT EXISTS reports (
  id TEXT PRIMARY KEY,
  search_id TEXT NOT NULL UNIQUE,
  body TEXT NOT NULL,
  created_at TEXT NOT NULL,
  FOREIGN KEY (search_id) REFERENCES searches(id)
);

CREATE TABLE IF NOT EXISTS audit_log (
  id TEXT PRIMARY KEY,
  created_at TEXT NOT NULL,
  actor TEXT NOT NULL,
  action TEXT NOT NULL,
  entity_type TEXT,
  entity_id TEXT,
  detail TEXT
);

CREATE INDEX IF NOT EXISTS idx_leads_search ON leads(search_id);
CREATE INDEX IF NOT EXISTS idx_leads_status ON leads(status);
CREATE INDEX IF NOT EXISTS idx_reviews_search ON reviews(search_id);
CREATE INDEX IF NOT EXISTS idx_reviews_status ON reviews(status);
CREATE INDEX IF NOT EXISTS idx_searches_created ON searches(created_at);
CREATE INDEX IF NOT EXISTS idx_searches_cache ON searches(cache_key);