modularizado de prompts

db/migrations/20260125100000_prompt_templates.sql

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+-- migrate:up
+
+-- Tabla para almacenar prompts editables por tenant con versionado
+CREATE TABLE prompt_templates (
+  id SERIAL PRIMARY KEY,
+  tenant_id UUID NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
+  prompt_key VARCHAR(50) NOT NULL,  -- 'router', 'greeting', 'orders', 'shipping', 'payment', 'browse'
+  content TEXT NOT NULL,
+  model VARCHAR(50) DEFAULT 'gpt-4-turbo',
+  version INTEGER NOT NULL DEFAULT 1,
+  is_active BOOLEAN DEFAULT true,
+  created_at TIMESTAMPTZ DEFAULT NOW(),
+  created_by TEXT,  -- email o identificador del usuario que creó el prompt
+  
+  CONSTRAINT uq_prompt_version UNIQUE(tenant_id, prompt_key, version)
+);
+
+-- Índice para búsqueda rápida del prompt activo
+CREATE INDEX idx_prompt_active ON prompt_templates(tenant_id, prompt_key) 
+WHERE is_active = true;
+
+-- Índice para listar versiones
+CREATE INDEX idx_prompt_versions ON prompt_templates(tenant_id, prompt_key, version DESC);
+
+-- Función para auto-incrementar versión al insertar
+CREATE OR REPLACE FUNCTION increment_prompt_version()
+RETURNS TRIGGER AS $$
+BEGIN
+  -- Calcular siguiente versión
+  NEW.version := COALESCE(
+    (SELECT MAX(version) + 1 FROM prompt_templates 
+     WHERE tenant_id = NEW.tenant_id AND prompt_key = NEW.prompt_key),
+    1
+  );
+  RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+-- Trigger para auto-versión
+CREATE TRIGGER prompt_version_trigger
+BEFORE INSERT ON prompt_templates
+FOR EACH ROW EXECUTE FUNCTION increment_prompt_version();
+
+-- migrate:down
+
+DROP TRIGGER IF EXISTS prompt_version_trigger ON prompt_templates;
+DROP FUNCTION IF EXISTS increment_prompt_version();
+DROP INDEX IF EXISTS idx_prompt_versions;
+DROP INDEX IF EXISTS idx_prompt_active;
+DROP TABLE IF EXISTS prompt_templates;

db/migrations/20260125110000_human_takeovers.sql

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+-- migrate:up
+
+-- Tabla para manejar conversaciones que requieren intervención humana
+CREATE TABLE human_takeovers (
+  id SERIAL PRIMARY KEY,
+  tenant_id UUID NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
+  chat_id TEXT NOT NULL,
+  
+  -- Info del takeover
+  pending_query TEXT NOT NULL,              -- La query/producto que no se encontró
+  reason TEXT NOT NULL DEFAULT 'product_not_found',  -- Razón del takeover
+  context_snapshot JSONB,                   -- Snapshot del contexto al momento del takeover
+  
+  -- Estado
+  status TEXT NOT NULL DEFAULT 'pending',   -- 'pending', 'responded', 'cancelled'
+  
+  -- Respuesta del humano
+  human_response TEXT,                      -- Texto de la respuesta
+  responded_at TIMESTAMPTZ,
+  responded_by TEXT,                        -- Email/ID del usuario que respondió
+  
+  -- Metadatos
+  created_at TIMESTAMPTZ DEFAULT NOW(),
+  updated_at TIMESTAMPTZ DEFAULT NOW(),
+  
+  -- Índices
+  CONSTRAINT valid_status CHECK (status IN ('pending', 'responded', 'cancelled'))
+);
+
+-- Índice para buscar takeovers pendientes por tenant
+CREATE INDEX idx_takeovers_pending ON human_takeovers(tenant_id, status, created_at DESC)
+WHERE status = 'pending';
+
+-- Índice para buscar por chat_id
+CREATE INDEX idx_takeovers_chat ON human_takeovers(tenant_id, chat_id, created_at DESC);
+
+-- Función para actualizar updated_at
+CREATE OR REPLACE FUNCTION update_takeover_timestamp()
+RETURNS TRIGGER AS $$
+BEGIN
+  NEW.updated_at := NOW();
+  RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER takeover_updated_trigger
+BEFORE UPDATE ON human_takeovers
+FOR EACH ROW EXECUTE FUNCTION update_takeover_timestamp();
+
+-- migrate:down
+
+DROP TRIGGER IF EXISTS takeover_updated_trigger ON human_takeovers;
+DROP FUNCTION IF EXISTS update_takeover_timestamp();
+DROP INDEX IF EXISTS idx_takeovers_chat;
+DROP INDEX IF EXISTS idx_takeovers_pending;
+DROP TABLE IF EXISTS human_takeovers;

db/migrations/20260125120000_tenant_settings.sql

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+-- migrate:up
+
+-- Tabla para configuración del tenant (variables de prompts, horarios, etc.)
+CREATE TABLE tenant_settings (
+  id SERIAL PRIMARY KEY,
+  tenant_id UUID NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
+  
+  -- Info básica del negocio
+  store_name VARCHAR(100) NOT NULL DEFAULT 'Mi Negocio',
+  bot_name VARCHAR(50) NOT NULL DEFAULT 'Piaf',
+  store_address TEXT,
+  store_phone VARCHAR(50),
+  
+  -- Horarios de delivery
+  delivery_enabled BOOLEAN DEFAULT true,
+  delivery_days VARCHAR(50) DEFAULT 'lun,mar,mie,jue,vie,sab',  -- días separados por coma
+  delivery_hours_start TIME DEFAULT '09:00',
+  delivery_hours_end TIME DEFAULT '18:00',
+  delivery_min_order DECIMAL(10,2) DEFAULT 0,
+  
+  -- Horarios de retiro en tienda
+  pickup_enabled BOOLEAN DEFAULT true,
+  pickup_days VARCHAR(50) DEFAULT 'lun,mar,mie,jue,vie,sab',
+  pickup_hours_start TIME DEFAULT '08:00',
+  pickup_hours_end TIME DEFAULT '20:00',
+  
+  -- Metadatos
+  created_at TIMESTAMPTZ DEFAULT NOW(),
+  updated_at TIMESTAMPTZ DEFAULT NOW(),
+  
+  -- Solo un registro por tenant
+  CONSTRAINT uq_tenant_settings UNIQUE(tenant_id)
+);
+
+-- Trigger para actualizar updated_at
+CREATE OR REPLACE FUNCTION update_tenant_settings_timestamp()
+RETURNS TRIGGER AS $$
+BEGIN
+  NEW.updated_at := NOW();
+  RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER tenant_settings_updated_trigger
+BEFORE UPDATE ON tenant_settings
+FOR EACH ROW EXECUTE FUNCTION update_tenant_settings_timestamp();
+
+-- Crear registro default para tenants existentes
+INSERT INTO tenant_settings (tenant_id, store_name, bot_name)
+SELECT id, 'Mi Carnicería', 'Piaf'
+FROM tenants
+ON CONFLICT (tenant_id) DO NOTHING;
+
+-- migrate:down
+
+DROP TRIGGER IF EXISTS tenant_settings_updated_trigger ON tenant_settings;
+DROP FUNCTION IF EXISTS update_tenant_settings_timestamp();
+DROP TABLE IF EXISTS tenant_settings;