-- R5 (ADR-004) : pgvector — même patron que PostGIS en r1_referentiel
CREATE EXTENSION IF NOT EXISTS vector;

-- CreateEnum
CREATE TYPE "RagSourceType" AS ENUM ('DOCUMENT', 'WORK_ORDER');

-- AlterTable
ALTER TABLE "Document" ADD COLUMN     "chunkCount" INTEGER NOT NULL DEFAULT 0,
ADD COLUMN     "inCorpus" BOOLEAN NOT NULL DEFAULT true,
ADD COLUMN     "indexedAt" TIMESTAMP(3);

-- CreateTable
CREATE TABLE "RagChunk" (
    "id" UUID NOT NULL,
    "sourceType" "RagSourceType" NOT NULL,
    "documentId" UUID,
    "workOrderId" UUID,
    "locator" TEXT NOT NULL,
    "content" TEXT NOT NULL,
    "embedding" vector(384) NOT NULL,
    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

    CONSTRAINT "RagChunk_pkey" PRIMARY KEY ("id")
);

-- CreateIndex
CREATE INDEX "RagChunk_documentId_idx" ON "RagChunk"("documentId");

-- CreateIndex
CREATE INDEX "RagChunk_workOrderId_idx" ON "RagChunk"("workOrderId");

-- AddForeignKey
ALTER TABLE "RagChunk" ADD CONSTRAINT "RagChunk_documentId_fkey" FOREIGN KEY ("documentId") REFERENCES "Document"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "RagChunk" ADD CONSTRAINT "RagChunk_workOrderId_fkey" FOREIGN KEY ("workOrderId") REFERENCES "WorkOrder"("id") ON DELETE CASCADE ON UPDATE CASCADE;