-- CreateTable
CREATE TABLE "Attachment" (
    "id" TEXT NOT NULL,
    "name" TEXT,
    "kategorie" TEXT,
    "mime" TEXT NOT NULL,

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

-- CreateTable
CREATE TABLE "Message" (
    "id" TEXT NOT NULL,
    "content" TEXT NOT NULL,
    "sender_id" TEXT NOT NULL,
    "reply_to_id" TEXT,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

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

-- CreateTable
CREATE TABLE "_AttachmentToMessage" (
    "A" TEXT NOT NULL,
    "B" TEXT NOT NULL,

    CONSTRAINT "_AttachmentToMessage_AB_pkey" PRIMARY KEY ("A","B")
);

-- CreateTable
CREATE TABLE "_recipients" (
    "A" VARCHAR(11) NOT NULL,
    "B" TEXT NOT NULL,

    CONSTRAINT "_recipients_AB_pkey" PRIMARY KEY ("A","B")
);

-- CreateIndex
CREATE UNIQUE INDEX "Attachment_id_key" ON "Attachment"("id");

-- CreateIndex
CREATE INDEX "_AttachmentToMessage_B_index" ON "_AttachmentToMessage"("B");

-- CreateIndex
CREATE INDEX "_recipients_B_index" ON "_recipients"("B");

-- AddForeignKey
ALTER TABLE "Message" ADD CONSTRAINT "Message_sender_id_fkey" FOREIGN KEY ("sender_id") REFERENCES "benutzer"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "Message" ADD CONSTRAINT "Message_reply_to_id_fkey" FOREIGN KEY ("reply_to_id") REFERENCES "Message"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "_AttachmentToMessage" ADD CONSTRAINT "_AttachmentToMessage_A_fkey" FOREIGN KEY ("A") REFERENCES "Attachment"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "_AttachmentToMessage" ADD CONSTRAINT "_AttachmentToMessage_B_fkey" FOREIGN KEY ("B") REFERENCES "Message"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "_recipients" ADD CONSTRAINT "_recipients_A_fkey" FOREIGN KEY ("A") REFERENCES "benutzer"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "_recipients" ADD CONSTRAINT "_recipients_B_fkey" FOREIGN KEY ("B") REFERENCES "Message"("id") ON DELETE CASCADE ON UPDATE CASCADE;