feat: introduce content library management for reusable content blocks with dedicated API endpoints and database schema.

services/cms-service/migrations/20260216000004_content_libraries.sql

@@ -0,0 +1,51 @@
+-- Content Libraries: Repositorio reutilizable de bloques y lecciones
+-- Permite a instructores guardar y reutilizar componentes de contenido
+
+-- Bloques reutilizables guardados en la biblioteca
+CREATE TABLE library_blocks (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    organization_id UUID NOT NULL,
+    created_by UUID NOT NULL, -- El instructor que lo guardó
+    name TEXT NOT NULL, -- Nombre descriptivo dado por el instructor
+    description TEXT, -- Descripción opcional
+    block_type TEXT NOT NULL, -- 'quiz', 'peer-review', 'hotspot', etc.
+    block_data JSONB NOT NULL, -- El bloque completo (mismo formato que metadata.blocks)
+    tags TEXT[], -- Array de etiquetas para búsqueda
+    usage_count INTEGER DEFAULT 0, -- Contador de cuántas veces se ha usado
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- Índices para búsqueda eficiente
+CREATE INDEX idx_library_blocks_org ON library_blocks(organization_id);
+CREATE INDEX idx_library_blocks_type ON library_blocks(block_type);
+CREATE INDEX idx_library_blocks_tags ON library_blocks USING GIN(tags);
+CREATE INDEX idx_library_blocks_created_by ON library_blocks(created_by);
+
+-- Trigger para actualizar updated_at
+CREATE TRIGGER update_library_blocks_updated_at 
+    BEFORE UPDATE ON library_blocks 
+    FOR EACH ROW 
+    EXECUTE PROCEDURE update_updated_at_column();
+
+-- Plantillas de lecciones completas (para futuras expansiones)
+CREATE TABLE library_templates (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    organization_id UUID NOT NULL,
+    created_by UUID NOT NULL,
+    name TEXT NOT NULL,
+    description TEXT,
+    lesson_data JSONB NOT NULL, -- Incluye metadata.blocks y configuración
+    tags TEXT[],
+    usage_count INTEGER DEFAULT 0,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX idx_library_templates_org ON library_templates(organization_id);
+
+-- Trigger para actualizar updated_at
+CREATE TRIGGER update_library_templates_updated_at 
+    BEFORE UPDATE ON library_templates 
+    FOR EACH ROW 
+    EXECUTE PROCEDURE update_updated_at_column();