-- Stornorechnungen: Gegenbeleg mit eigenem Nummernkreis (ST-JJJJ-NNNN) statt
-- Loeschen oder Aendern einer Rechnung. Rein additiv.
-- CreateTable
CREATE TABLE "cancellation_counters" (
    "year" INTEGER NOT NULL,
    "lastNumber" INTEGER NOT NULL DEFAULT 0,

    CONSTRAINT "cancellation_counters_pkey" PRIMARY KEY ("year")
);

-- CreateTable
CREATE TABLE "cancellation_invoices" (
    "id" TEXT NOT NULL,
    "invoiceId" TEXT NOT NULL,
    "number" TEXT NOT NULL,
    "issuedAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "totalCents" INTEGER NOT NULL,
    "reason" TEXT NOT NULL,
    "pdfPath" TEXT,

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

-- CreateIndex
CREATE UNIQUE INDEX "cancellation_invoices_invoiceId_key" ON "cancellation_invoices"("invoiceId");

-- CreateIndex
CREATE UNIQUE INDEX "cancellation_invoices_number_key" ON "cancellation_invoices"("number");

-- CreateIndex
CREATE INDEX "cancellation_invoices_issuedAt_idx" ON "cancellation_invoices"("issuedAt");

-- AddForeignKey
ALTER TABLE "cancellation_invoices" ADD CONSTRAINT "cancellation_invoices_invoiceId_fkey" FOREIGN KEY ("invoiceId") REFERENCES "invoices"("id") ON DELETE CASCADE ON UPDATE CASCADE;