PRAGMA foreign_keys = ON;

CREATE TABLE IF NOT EXISTS organizations (
 id TEXT PRIMARY KEY,
 name TEXT NOT NULL,
 created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE IF NOT EXISTS users (
 id INTEGER PRIMARY KEY AUTOINCREMENT,
 organization_id TEXT NOT NULL REFERENCES organizations(id),
 email TEXT NOT NULL UNIQUE,
 password_hash TEXT NOT NULL,
 password_salt TEXT NOT NULL,
 role TEXT NOT NULL CHECK(role IN ('viewer','owner','admin','researcher')),
 created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
);
CREATE INDEX IF NOT EXISTS idx_users_org ON users(organization_id);

CREATE TABLE IF NOT EXISTS sessions (
 id INTEGER PRIMARY KEY AUTOINCREMENT,
 user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
 token_hash TEXT NOT NULL UNIQUE,
 expires_at TEXT NOT NULL,
 created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
);
CREATE INDEX IF NOT EXISTS idx_sessions_token ON sessions(token_hash);

CREATE TABLE IF NOT EXISTS audit_log (
 id INTEGER PRIMARY KEY AUTOINCREMENT,
 organization_id TEXT REFERENCES organizations(id),
 user_id INTEGER REFERENCES users(id) ON DELETE SET NULL,
 action TEXT NOT NULL,
 details TEXT NOT NULL DEFAULT '',
 created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
);
CREATE INDEX IF NOT EXISTS idx_audit_org ON audit_log(organization_id);

CREATE TABLE IF NOT EXISTS businesses (
 id INTEGER PRIMARY KEY AUTOINCREMENT,
 organization_id TEXT NOT NULL,
 name TEXT NOT NULL,
 website TEXT NOT NULL DEFAULT '',
 website_domain TEXT NOT NULL DEFAULT '',
 email TEXT NOT NULL DEFAULT '',
 phone TEXT NOT NULL DEFAULT '',
 description TEXT NOT NULL DEFAULT '',
 score INTEGER NOT NULL DEFAULT 0,
 score_version TEXT NOT NULL DEFAULT 'mvp-1',
 score_factors TEXT NOT NULL DEFAULT '[]',
 website_class TEXT NOT NULL DEFAULT 'missing',
 created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
);
CREATE INDEX IF NOT EXISTS idx_businesses_org ON businesses(organization_id);
CREATE UNIQUE INDEX IF NOT EXISTS uq_business_domain ON businesses(organization_id, website_domain) WHERE website_domain <> '';
CREATE UNIQUE INDEX IF NOT EXISTS uq_business_email ON businesses(organization_id, email) WHERE email <> '';
CREATE UNIQUE INDEX IF NOT EXISTS uq_business_phone ON businesses(organization_id, phone) WHERE phone <> '';

CREATE TABLE IF NOT EXISTS suppressions (
 id INTEGER PRIMARY KEY AUTOINCREMENT,
 organization_id TEXT NOT NULL,
 kind TEXT NOT NULL CHECK(kind IN ('email','domain','phone')),
 value TEXT NOT NULL,
 created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
 UNIQUE(organization_id, kind, value)
);