feat: activate AI usage

services/cms-service/migrations/20260319000000_ai_usage_add_prompt_response.sql

@@ -0,0 +1,52 @@
+-- AI Usage Logs: Add prompt and response fields for detailed tracking
+-- This allows storing the actual prompts and responses for debugging and analytics
+
+-- Add new columns to ai_usage_logs
+ALTER TABLE ai_usage_logs 
+    ADD COLUMN IF NOT EXISTS prompt TEXT,
+    ADD COLUMN IF NOT EXISTS response TEXT;
+
+-- Update log_ai_usage function to accept prompt and response
+CREATE OR REPLACE FUNCTION log_ai_usage(
+    p_user_id UUID,
+    p_org_id UUID,
+    p_tokens INTEGER,
+    p_input_tokens INTEGER,
+    p_output_tokens INTEGER,
+    p_endpoint VARCHAR,
+    p_model VARCHAR,
+    p_request_type VARCHAR,
+    p_metadata JSONB,
+    p_prompt TEXT DEFAULT NULL,
+    p_response TEXT DEFAULT NULL
+)
+RETURNS UUID AS $$
+DECLARE
+    v_log_id UUID;
+    v_cost NUMERIC(10, 6);
+BEGIN
+    -- Calculate estimated cost (OpenAI-like pricing)
+    v_cost := (p_input_tokens::NUMERIC * 0.000001) + (p_output_tokens::NUMERIC * 0.000003);
+
+    INSERT INTO ai_usage_logs (
+        user_id, organization_id, tokens_used, input_tokens, output_tokens,
+        endpoint, model, request_type, request_metadata, estimated_cost_usd,
+        prompt, response
+    )
+    VALUES (
+        p_user_id, p_org_id, p_tokens, p_input_tokens, p_output_tokens,
+        p_endpoint, p_model, p_request_type, p_metadata, v_cost,
+        p_prompt, p_response
+    )
+    RETURNING id INTO v_log_id;
+
+    RETURN v_log_id;
+END;
+$$ LANGUAGE plpgsql;
+
+-- Add indexes for text search (optional, can be enabled if needed for analytics)
+-- CREATE INDEX idx_ai_usage_prompt ON ai_usage_logs USING gin (to_tsvector('spanish', prompt));
+-- CREATE INDEX idx_ai_usage_response ON ai_usage_logs USING gin (to_tsvector('spanish', response));
+
+COMMENT ON COLUMN ai_usage_logs.prompt IS 'The actual prompt sent to the AI model';
+COMMENT ON COLUMN ai_usage_logs.response IS 'The AI model response content';