-- L17 Pakete (Basis/Profi) & Lotse-Chat-Plätze
-- Additiv: Stufe + Platzanzahl + hartes Limit am Mandanten (Default PROFI = bestehende Mandanten unverändert),
-- Tabelle lotse_chat_seats (Mandanten-RLS), Index für die Monatszählung der Chat-Nachrichten.


-- CreateEnum
CREATE TYPE "TenantTier" AS ENUM ('BASIS', 'PROFI');

-- AlterTable
ALTER TABLE "tenants" ADD COLUMN     "lotse_chat_hard_limit" BOOLEAN NOT NULL DEFAULT false,
ADD COLUMN     "lotse_chat_seats" INTEGER NOT NULL DEFAULT 0,
ADD COLUMN     "tier" "TenantTier" NOT NULL DEFAULT 'PROFI';

-- CreateTable
CREATE TABLE "lotse_chat_seats" (
    "id" TEXT NOT NULL,
    "tenant_id" TEXT NOT NULL,
    "user_id" TEXT NOT NULL,
    "assigned_by_id" TEXT,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

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

-- CreateIndex
CREATE INDEX "lotse_chat_seats_tenant_id_created_at_idx" ON "lotse_chat_seats"("tenant_id", "created_at");

-- CreateIndex
CREATE UNIQUE INDEX "lotse_chat_seats_tenant_id_user_id_key" ON "lotse_chat_seats"("tenant_id", "user_id");

-- CreateIndex
CREATE INDEX "lotse_messages_tenant_id_role_created_at_idx" ON "lotse_messages"("tenant_id", "role", "created_at");


-- Mandantentrennung (docs/craftvia/MIGRATIONS.md)
SELECT enable_tenant_rls('lotse_chat_seats');