-- CreateEnum
CREATE TYPE "FriendRequestStatus" AS ENUM ('PENDING', 'ACCEPTED', 'DENIED');

-- CreateTable
CREATE TABLE "friend_requests" (
    "id" TEXT NOT NULL,
    "sender_id" TEXT NOT NULL,
    "receiver_id" TEXT NOT NULL,
    "status" "FriendRequestStatus" NOT NULL DEFAULT 'PENDING',
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

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

-- CreateTable
CREATE TABLE "friendships" (
    "id" TEXT NOT NULL,
    "user_id" TEXT NOT NULL,
    "friend_id" TEXT NOT NULL,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

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

-- CreateIndex
CREATE UNIQUE INDEX "friend_requests_sender_id_receiver_id_key" ON "friend_requests"("sender_id", "receiver_id");

-- CreateIndex
CREATE UNIQUE INDEX "friendships_user_id_friend_id_key" ON "friendships"("user_id", "friend_id");

-- AddForeignKey
ALTER TABLE "friend_requests" ADD CONSTRAINT "friend_requests_sender_id_fkey" FOREIGN KEY ("sender_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "friend_requests" ADD CONSTRAINT "friend_requests_receiver_id_fkey" FOREIGN KEY ("receiver_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "friendships" ADD CONSTRAINT "friendships_user_id_fkey" FOREIGN KEY ("user_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "friendships" ADD CONSTRAINT "friendships_friend_id_fkey" FOREIGN KEY ("friend_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;