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accounted/supabase/migrations/20260320120000_api_keys.sql
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PL/PgSQL

-- API keys for external integrations (MCP, webhooks, future public API)
CREATE TABLE public.api_keys (
id uuid DEFAULT gen_random_uuid() PRIMARY KEY,
user_id uuid NOT NULL REFERENCES auth.users(id) ON DELETE CASCADE,
key_hash text NOT NULL,
key_prefix text NOT NULL, -- e.g. "gnubok_sk_a8f2..." for display
name text NOT NULL DEFAULT 'Unnamed key',
scopes text[] DEFAULT NULL, -- NULL = full access. Future: ['read', 'write', 'mcp']
rate_limit_rpm integer NOT NULL DEFAULT 100,
request_count integer NOT NULL DEFAULT 0,
rate_limit_window_start timestamptz,
last_used_at timestamptz,
revoked_at timestamptz,
created_at timestamptz NOT NULL DEFAULT now(),
updated_at timestamptz NOT NULL DEFAULT now()
);
-- RLS
ALTER TABLE public.api_keys ENABLE ROW LEVEL SECURITY;
CREATE POLICY "Users can view own api_keys"
ON public.api_keys FOR SELECT USING (auth.uid() = user_id);
CREATE POLICY "Users can insert own api_keys"
ON public.api_keys FOR INSERT WITH CHECK (auth.uid() = user_id);
CREATE POLICY "Users can update own api_keys"
ON public.api_keys FOR UPDATE USING (auth.uid() = user_id);
CREATE POLICY "Users can delete own api_keys"
ON public.api_keys FOR DELETE USING (auth.uid() = user_id);
-- Indexes
CREATE INDEX idx_api_keys_user_id ON public.api_keys (user_id);
CREATE UNIQUE INDEX idx_api_keys_key_hash ON public.api_keys (key_hash);
-- Triggers
CREATE TRIGGER set_updated_at_api_keys
BEFORE UPDATE ON public.api_keys
FOR EACH ROW EXECUTE FUNCTION public.update_updated_at_column();
CREATE TRIGGER audit_api_keys
AFTER INSERT OR UPDATE OR DELETE ON public.api_keys
FOR EACH ROW EXECUTE FUNCTION public.write_audit_log();
-- Atomic rate-limited key validation (called by service role, bypasses RLS)
CREATE OR REPLACE FUNCTION public.validate_and_increment_api_key(p_key_hash text)
RETURNS TABLE(user_id uuid, rate_limited boolean)
LANGUAGE plpgsql SECURITY DEFINER AS $$
DECLARE
v_user_id uuid;
v_rate_limit_rpm integer;
v_request_count integer;
v_window_start timestamptz;
BEGIN
-- Lock row for atomic update
SELECT ak.user_id, ak.rate_limit_rpm, ak.request_count, ak.rate_limit_window_start
INTO v_user_id, v_rate_limit_rpm, v_request_count, v_window_start
FROM public.api_keys ak
WHERE ak.key_hash = p_key_hash AND ak.revoked_at IS NULL
FOR UPDATE;
IF v_user_id IS NULL THEN
RETURN;
END IF;
-- Reset window if expired (> 1 minute old)
IF v_window_start IS NULL OR v_window_start < now() - interval '1 minute' THEN
UPDATE public.api_keys
SET request_count = 1,
rate_limit_window_start = now(),
last_used_at = now()
WHERE key_hash = p_key_hash;
RETURN QUERY SELECT v_user_id, false;
RETURN;
END IF;
-- Check rate limit
IF v_request_count >= v_rate_limit_rpm THEN
RETURN QUERY SELECT v_user_id, true;
RETURN;
END IF;
-- Increment counter
UPDATE public.api_keys
SET request_count = request_count + 1,
last_used_at = now()
WHERE key_hash = p_key_hash;
RETURN QUERY SELECT v_user_id, false;
END;
$$;