CREATE TYPE "CircleRole" AS ENUM ('MEMBER', 'LEAD');

CREATE TABLE "Circle" (
    "id" TEXT NOT NULL,
    "tenantId" TEXT NOT NULL,
    "name" TEXT NOT NULL,
    "description" TEXT,
    "isPublic" BOOLEAN NOT NULL DEFAULT true,
    "createdBy" TEXT NOT NULL,
    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updatedAt" TIMESTAMP(3) NOT NULL,
    CONSTRAINT "Circle_pkey" PRIMARY KEY ("id")
);

CREATE TABLE "CircleMembership" (
    "id" TEXT NOT NULL,
    "circleId" TEXT NOT NULL,
    "userId" TEXT NOT NULL,
    "role" "CircleRole" NOT NULL DEFAULT 'MEMBER',
    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT "CircleMembership_pkey" PRIMARY KEY ("id")
);

CREATE UNIQUE INDEX "Circle_tenantId_name_key" ON "Circle"("tenantId", "name");
CREATE INDEX "Circle_tenantId_isPublic_idx" ON "Circle"("tenantId", "isPublic");
CREATE UNIQUE INDEX "CircleMembership_circleId_userId_key" ON "CircleMembership"("circleId", "userId");
CREATE INDEX "CircleMembership_userId_idx" ON "CircleMembership"("userId");

ALTER TABLE "Circle" ADD CONSTRAINT "Circle_tenantId_fkey" FOREIGN KEY ("tenantId") REFERENCES "Tenant"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
ALTER TABLE "CircleMembership" ADD CONSTRAINT "CircleMembership_circleId_fkey" FOREIGN KEY ("circleId") REFERENCES "Circle"("id") ON DELETE CASCADE ON UPDATE CASCADE;
ALTER TABLE "CircleMembership" ADD CONSTRAINT "CircleMembership_userId_fkey" FOREIGN KEY ("userId") REFERENCES "TowerUser"("id") ON DELETE RESTRICT ON UPDATE CASCADE;